mirror of https://github.com/rusefi/openblt.git
- Added the EFM32 port specific sources
git-svn-id: https://svn.code.sf.net/p/openblt/code/trunk@24 5dc33758-31d5-4daf-9ae8-b24bf3d40d73
This commit is contained in:
Frank Voorburg
parent
a8ee802492
commit
7defdc3296
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@ -0,0 +1,434 @@
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/*****************************************************************************
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* Copyright (c) 2009 Rowley Associates Limited. *
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* *
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* This file may be distributed under the terms of the License Agreement *
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* provided with this software. *
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* *
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* THIS FILE IS PROVIDED AS IS WITH NO WARRANTY OF ANY KIND, INCLUDING THE *
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* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. *
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*****************************************************************************/
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/*****************************************************************************
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* Preprocessor Definitions
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* ------------------------
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* APP_ENTRY_POINT
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*
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* Defines the application entry point function, if undefined this setting
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* defaults to "main".
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*
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* USE_PROCESS_STACK
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*
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* If defined, thread mode will be configured to use the process stack if
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* the size of the process stack is greater than zero bytes in length.
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*
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* INITIALIZE_STACK
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*
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* If defined, the contents of the stack will be initialized to a the
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* value 0xCC.
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*
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* INITIALIZE_SECONDARY_SECTIONS
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*
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* If defined, the .data2, .text2, .rodata2 and .bss2 sections will be initialized.
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*
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* FULL_LIBRARY
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*
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* If defined then
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* - argc, argv are setup by the debug_getargs.
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* - the exit symbol is defined and executes on return from main.
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* - the exit symbol calls destructors, atexit functions and then debug_exit.
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*
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* If not defined then
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* - argc and argv are zero.
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* - the exit symbol is defined, executes on return from main and loops
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*****************************************************************************/
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#ifndef APP_ENTRY_POINT
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#define APP_ENTRY_POINT main
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#endif
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#ifndef ARGSSPACE
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#define ARGSSPACE 128
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#endif
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.extern APP_ENTRY_POINT
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.global exit
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.global reset_handler
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.global EntryFromProg
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.extern ComSetConnectEntryState
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.section .init, "ax"
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.code 16
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.align 2
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.thumb_func
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/****************************************************************************************
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** NAME: EntryFromProg
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** PARAMETER: none
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** RETURN VALUE: none
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** DESCRIPTION: Called by the user program to activate the bootloader. Do not place
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** any assembly code before this function and the end of the vector
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** table. This guarantees that this function is located at address
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** 0x08000150. The user program can call this function from C in the
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** following way:
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** void ActivateBootloader(void)
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** {
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** void (*pEntryFromProgFnc)(void);
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**
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** pEntryFromProgFnc = (void*)0x08000150 + 1;
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** pEntryFromProgFnc();
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** }
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** Note that the + 1 added to the function address is neccassary to
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** enable a switch from Thumb2 to Thumb mode.
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**
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****************************************************************************************/
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EntryFromProg:
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/* disable interrupts first */
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cpsid i
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/* configure vector table offset register to use bootloader's vector table*/
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ldr r0, =0xE000ED08
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ldr r1, =_vectors
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str r1, [r0]
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/* initialize stack pointer */
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ldr r1, =__stack_end__
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#ifdef __ARM_EABI__
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mov r2, #0x7
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bic r1, r2
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#endif
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mov sp, r1
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#ifdef INITIALIZE_STACK
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mov r2, #0xCC
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ldr r0, =__stack_start__
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bl memory_set
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#endif
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#ifdef USE_PROCESS_STACK
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/* Set up process stack if size > 0 */
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ldr r1, =__stack_process_end__
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ldr r0, =__stack_process_start__
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sub r2, r1, r0
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beq 1f
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#ifdef __ARM_EABI__
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mov r2, #0x7
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bic r1, r2
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#endif
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msr psp, r1
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mov r2, #2
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msr control, r2
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#ifdef INITIALIZE_STACK
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mov r2, #0xCC
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bl memory_set
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#endif
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1:
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#endif
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/* Copy initialised memory sections into RAM (if necessary). */
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ldr r0, =__data_load_start__
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ldr r1, =__data_start__
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ldr r2, =__data_end__
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bl memory_copy
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ldr r0, =__text_load_start__
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ldr r1, =__text_start__
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ldr r2, =__text_end__
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bl memory_copy
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ldr r0, =__fast_load_start__
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ldr r1, =__fast_start__
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ldr r2, =__fast_end__
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bl memory_copy
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ldr r0, =__ctors_load_start__
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ldr r1, =__ctors_start__
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ldr r2, =__ctors_end__
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bl memory_copy
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ldr r0, =__dtors_load_start__
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ldr r1, =__dtors_start__
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ldr r2, =__dtors_end__
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bl memory_copy
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ldr r0, =__rodata_load_start__
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ldr r1, =__rodata_start__
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ldr r2, =__rodata_end__
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bl memory_copy
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#ifdef INITIALIZE_SECONDARY_SECTIONS
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ldr r0, =__data2_load_start__
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ldr r1, =__data2_start__
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ldr r2, =__data2_end__
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bl memory_copy
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ldr r0, =__text2_load_start__
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ldr r1, =__text2_start__
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ldr r2, =__text2_end__
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bl memory_copy
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ldr r0, =__rodata2_load_start__
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ldr r1, =__rodata2_start__
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ldr r2, =__rodata2_end__
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bl memory_copy
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#endif /* #ifdef INITIALIZE_SECONDARY_SECTIONS */
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/* Zero the bss. */
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ldr r0, =__bss_start__
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ldr r1, =__bss_end__
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mov r2, #0
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bl memory_set
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#ifdef INITIALIZE_SECONDARY_SECTIONS
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ldr r0, =__bss2_start__
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ldr r1, =__bss2_end__
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mov r2, #0
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bl memory_set
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#endif /* #ifdef INITIALIZE_SECONDARY_SECTIONS */
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/* Initialise the heap */
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ldr r0, = __heap_start__
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ldr r1, = __heap_end__
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sub r1, r1, r0
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cmp r1, #8
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blt 1f
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mov r2, #0
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str r2, [r0]
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add r0, r0, #4
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str r1, [r0]
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1:
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/* Call constructors */
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ldr r0, =__ctors_start__
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ldr r1, =__ctors_end__
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ctor_loop:
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cmp r0, r1
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beq ctor_end
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ldr r2, [r0]
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add r0, #4
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push {r0-r1}
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blx r2
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pop {r0-r1}
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b ctor_loop
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ctor_end:
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/* Setup initial call frame */
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mov r0, #0
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mov lr, r0
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mov r12, sp
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start:
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/* this part makes the difference with the normal reset_handler */
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bl ComSetConnectEntryState
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/* Jump to application entry point */
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#ifdef FULL_LIBRARY
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mov r0, #ARGSSPACE
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ldr r1, =args
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ldr r2, =debug_getargs
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blx r2
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ldr r1, =args
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#else
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mov r0, #0
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mov r1, #0
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#endif
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ldr r2, =APP_ENTRY_POINT
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blx r2
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.thumb_func
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/****************************************************************************************
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** NAME: reset_handler
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** PARAMETER: none
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** RETURN VALUE: none
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** DESCRIPTION: Reset interrupt service routine. Configures the stack, initializes
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** RAM and jumps to function main.
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**
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****************************************************************************************/
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reset_handler:
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/* disable interrupts first */
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cpsid i
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ldr r1, =__stack_end__
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#ifdef __ARM_EABI__
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mov r2, #0x7
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bic r1, r2
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#endif
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mov sp, r1
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#ifdef INITIALIZE_STACK
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mov r2, #0xCC
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ldr r0, =__stack_start__
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bl memory_set
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#endif
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#ifdef USE_PROCESS_STACK
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/* Set up process stack if size > 0 */
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ldr r1, =__stack_process_end__
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ldr r0, =__stack_process_start__
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sub r2, r1, r0
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beq 1f
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#ifdef __ARM_EABI__
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mov r2, #0x7
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bic r1, r2
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#endif
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msr psp, r1
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mov r2, #2
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msr control, r2
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#ifdef INITIALIZE_STACK
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mov r2, #0xCC
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bl memory_set
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#endif
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1:
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#endif
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/* Copy initialised memory sections into RAM (if necessary). */
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ldr r0, =__data_load_start__
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ldr r1, =__data_start__
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ldr r2, =__data_end__
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bl memory_copy
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ldr r0, =__text_load_start__
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ldr r1, =__text_start__
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ldr r2, =__text_end__
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bl memory_copy
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ldr r0, =__fast_load_start__
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ldr r1, =__fast_start__
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ldr r2, =__fast_end__
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bl memory_copy
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ldr r0, =__ctors_load_start__
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ldr r1, =__ctors_start__
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ldr r2, =__ctors_end__
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bl memory_copy
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ldr r0, =__dtors_load_start__
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ldr r1, =__dtors_start__
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ldr r2, =__dtors_end__
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bl memory_copy
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ldr r0, =__rodata_load_start__
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ldr r1, =__rodata_start__
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ldr r2, =__rodata_end__
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bl memory_copy
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#ifdef INITIALIZE_SECONDARY_SECTIONS
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ldr r0, =__data2_load_start__
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ldr r1, =__data2_start__
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ldr r2, =__data2_end__
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bl memory_copy
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ldr r0, =__text2_load_start__
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ldr r1, =__text2_start__
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ldr r2, =__text2_end__
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bl memory_copy
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ldr r0, =__rodata2_load_start__
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ldr r1, =__rodata2_start__
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ldr r2, =__rodata2_end__
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bl memory_copy
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#endif /* #ifdef INITIALIZE_SECONDARY_SECTIONS */
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/* Zero the bss. */
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ldr r0, =__bss_start__
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ldr r1, =__bss_end__
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mov r2, #0
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bl memory_set
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#ifdef INITIALIZE_SECONDARY_SECTIONS
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ldr r0, =__bss2_start__
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ldr r1, =__bss2_end__
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mov r2, #0
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bl memory_set
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#endif /* #ifdef INITIALIZE_SECONDARY_SECTIONS */
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/* Initialise the heap */
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ldr r0, = __heap_start__
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ldr r1, = __heap_end__
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sub r1, r1, r0
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cmp r1, #8
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blt 1f
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mov r2, #0
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str r2, [r0]
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add r0, r0, #4
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str r1, [r0]
|
||||
1:
|
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|
||||
/* Call constructors */
|
||||
ldr r0, =__ctors_start__
|
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ldr r1, =__ctors_end__
|
||||
ctor_loop2:
|
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cmp r0, r1
|
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beq ctor_end2
|
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ldr r2, [r0]
|
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add r0, #4
|
||||
push {r0-r1}
|
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blx r2
|
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pop {r0-r1}
|
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b ctor_loop2
|
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ctor_end2:
|
||||
|
||||
/* Setup initial call frame */
|
||||
mov r0, #0
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mov lr, r0
|
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mov r12, sp
|
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|
||||
start2:
|
||||
/* Jump to application entry point */
|
||||
#ifdef FULL_LIBRARY
|
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mov r0, #ARGSSPACE
|
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ldr r1, =args
|
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ldr r2, =debug_getargs
|
||||
blx r2
|
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ldr r1, =args
|
||||
#else
|
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mov r0, #0
|
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mov r1, #0
|
||||
#endif
|
||||
ldr r2, =APP_ENTRY_POINT
|
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blx r2
|
||||
|
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.thumb_func
|
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exit:
|
||||
#ifdef FULL_LIBRARY
|
||||
mov r5, r0 // save the exit parameter/return result
|
||||
|
||||
/* Call destructors */
|
||||
ldr r0, =__dtors_start__
|
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ldr r1, =__dtors_end__
|
||||
dtor_loop:
|
||||
cmp r0, r1
|
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beq dtor_end
|
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ldr r2, [r0]
|
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add r0, #4
|
||||
push {r0-r1}
|
||||
blx r2
|
||||
pop {r0-r1}
|
||||
b dtor_loop
|
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dtor_end:
|
||||
|
||||
/* Call atexit functions */
|
||||
ldr r2, =_execute_at_exit_fns
|
||||
blx r2
|
||||
|
||||
/* Call debug_exit with return result/exit parameter */
|
||||
mov r0, r5
|
||||
ldr r2, =debug_exit
|
||||
blx r2
|
||||
#endif
|
||||
|
||||
/* Returned from application entry point, loop forever. */
|
||||
exit_loop:
|
||||
b exit_loop
|
||||
|
||||
.thumb_func
|
||||
memory_copy:
|
||||
cmp r0, r1
|
||||
beq 2f
|
||||
sub r2, r2, r1
|
||||
beq 2f
|
||||
1:
|
||||
ldrb r3, [r0]
|
||||
add r0, r0, #1
|
||||
strb r3, [r1]
|
||||
add r1, r1, #1
|
||||
sub r2, r2, #1
|
||||
bne 1b
|
||||
2:
|
||||
bx lr
|
||||
|
||||
.thumb_func
|
||||
memory_set:
|
||||
cmp r0, r1
|
||||
beq 1f
|
||||
strb r2, [r0]
|
||||
add r0, r0, #1
|
||||
b memory_set
|
||||
1:
|
||||
bx lr
|
||||
|
||||
|
||||
#ifdef FULL_LIBRARY
|
||||
.bss
|
||||
args:
|
||||
.space ARGSSPACE
|
||||
#endif
|
||||
|
||||
/* Setup attibutes of stack and heap sections so they don't take up room in the elf file */
|
||||
.section .stack, "wa", %nobits
|
||||
.section .stack_process, "wa", %nobits
|
||||
.section .heap, "wa", %nobits
|
||||
|
||||
|
|
@ -0,0 +1,275 @@
|
|||
MEMORY
|
||||
{
|
||||
UNPLACED_SECTIONS (wx) : ORIGIN = 0x100000000, LENGTH = 0
|
||||
CM3_System_Control_Space (wx) : ORIGIN = 0xe000e000, LENGTH = 0x00001000
|
||||
RAM (wx) : ORIGIN = 0x20000000, LENGTH = 0x00001000
|
||||
FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x00004000
|
||||
}
|
||||
|
||||
|
||||
SECTIONS
|
||||
{
|
||||
__CM3_System_Control_Space_segment_start__ = 0xe000e000;
|
||||
__CM3_System_Control_Space_segment_end__ = 0xe000f000;
|
||||
__RAM_segment_start__ = 0x20000000;
|
||||
__RAM_segment_end__ = 0x20001000;
|
||||
__FLASH_segment_start__ = 0x00000000;
|
||||
__FLASH_segment_end__ = 0x00004000;
|
||||
|
||||
__STACKSIZE__ = 256;
|
||||
__STACKSIZE_PROCESS__ = 0;
|
||||
__STACKSIZE_IRQ__ = 0;
|
||||
__STACKSIZE_FIQ__ = 0;
|
||||
__STACKSIZE_SVC__ = 0;
|
||||
__STACKSIZE_ABT__ = 0;
|
||||
__STACKSIZE_UND__ = 0;
|
||||
__HEAPSIZE__ = 128;
|
||||
|
||||
__vectors_ram_load_start__ = ALIGN(__RAM_segment_start__ , 256);
|
||||
.vectors_ram ALIGN(__RAM_segment_start__ , 256) (NOLOAD) : AT(ALIGN(__RAM_segment_start__ , 256))
|
||||
{
|
||||
__vectors_ram_start__ = .;
|
||||
*(.vectors_ram .vectors_ram.*)
|
||||
}
|
||||
__vectors_ram_end__ = __vectors_ram_start__ + SIZEOF(.vectors_ram);
|
||||
|
||||
__vectors_ram_load_end__ = __vectors_ram_end__;
|
||||
|
||||
. = ASSERT(__vectors_ram_end__ >= __RAM_segment_start__ && __vectors_ram_end__ <= (__RAM_segment_start__ + 0x00004000) , "error: .vectors_ram is too large to fit in RAM memory segment");
|
||||
|
||||
__vectors_load_start__ = ALIGN(__FLASH_segment_start__ , 256);
|
||||
.vectors ALIGN(__FLASH_segment_start__ , 256) : AT(ALIGN(__FLASH_segment_start__ , 256))
|
||||
{
|
||||
__vectors_start__ = .;
|
||||
*(.vectors .vectors.*)
|
||||
}
|
||||
__vectors_end__ = __vectors_start__ + SIZEOF(.vectors);
|
||||
|
||||
__vectors_load_end__ = __vectors_end__;
|
||||
|
||||
. = ASSERT(__vectors_end__ >= __FLASH_segment_start__ && __vectors_end__ <= (__FLASH_segment_start__ + 0x00020000) , "error: .vectors is too large to fit in FLASH memory segment");
|
||||
|
||||
__init_load_start__ = ALIGN(__vectors_end__ , 4);
|
||||
.init ALIGN(__vectors_end__ , 4) : AT(ALIGN(__vectors_end__ , 4))
|
||||
{
|
||||
__init_start__ = .;
|
||||
*(.init .init.*)
|
||||
}
|
||||
__init_end__ = __init_start__ + SIZEOF(.init);
|
||||
|
||||
__init_load_end__ = __init_end__;
|
||||
|
||||
. = ASSERT(__init_end__ >= __FLASH_segment_start__ && __init_end__ <= (__FLASH_segment_start__ + 0x00020000) , "error: .init is too large to fit in FLASH memory segment");
|
||||
|
||||
__text_load_start__ = ALIGN(__init_end__ , 4);
|
||||
.text ALIGN(__init_end__ , 4) : AT(ALIGN(__init_end__ , 4))
|
||||
{
|
||||
__text_start__ = .;
|
||||
*(.text .text.* .glue_7t .glue_7 .gnu.linkonce.t.* .gcc_except_table .ARM.extab* .gnu.linkonce.armextab.*)
|
||||
}
|
||||
__text_end__ = __text_start__ + SIZEOF(.text);
|
||||
|
||||
__text_load_end__ = __text_end__;
|
||||
|
||||
. = ASSERT(__text_end__ >= __FLASH_segment_start__ && __text_end__ <= (__FLASH_segment_start__ + 0x00020000) , "error: .text is too large to fit in FLASH memory segment");
|
||||
|
||||
__dtors_load_start__ = ALIGN(__text_end__ , 4);
|
||||
.dtors ALIGN(__text_end__ , 4) : AT(ALIGN(__text_end__ , 4))
|
||||
{
|
||||
__dtors_start__ = .;
|
||||
KEEP (*(SORT(.dtors.*))) KEEP (*(.dtors)) KEEP (*(.fini_array .fini_array.*))
|
||||
}
|
||||
__dtors_end__ = __dtors_start__ + SIZEOF(.dtors);
|
||||
|
||||
__dtors_load_end__ = __dtors_end__;
|
||||
|
||||
. = ASSERT(__dtors_end__ >= __FLASH_segment_start__ && __dtors_end__ <= (__FLASH_segment_start__ + 0x00020000) , "error: .dtors is too large to fit in FLASH memory segment");
|
||||
|
||||
__ctors_load_start__ = ALIGN(__dtors_end__ , 4);
|
||||
.ctors ALIGN(__dtors_end__ , 4) : AT(ALIGN(__dtors_end__ , 4))
|
||||
{
|
||||
__ctors_start__ = .;
|
||||
KEEP (*(SORT(.ctors.*))) KEEP (*(.ctors)) KEEP (*(.init_array .init_array.*))
|
||||
}
|
||||
__ctors_end__ = __ctors_start__ + SIZEOF(.ctors);
|
||||
|
||||
__ctors_load_end__ = __ctors_end__;
|
||||
|
||||
. = ASSERT(__ctors_end__ >= __FLASH_segment_start__ && __ctors_end__ <= (__FLASH_segment_start__ + 0x00020000) , "error: .ctors is too large to fit in FLASH memory segment");
|
||||
|
||||
__rodata_load_start__ = ALIGN(__ctors_end__ , 4);
|
||||
.rodata ALIGN(__ctors_end__ , 4) : AT(ALIGN(__ctors_end__ , 4))
|
||||
{
|
||||
__rodata_start__ = .;
|
||||
*(.rodata .rodata.* .gnu.linkonce.r.*)
|
||||
}
|
||||
__rodata_end__ = __rodata_start__ + SIZEOF(.rodata);
|
||||
|
||||
__rodata_load_end__ = __rodata_end__;
|
||||
|
||||
. = ASSERT(__rodata_end__ >= __FLASH_segment_start__ && __rodata_end__ <= (__FLASH_segment_start__ + 0x00020000) , "error: .rodata is too large to fit in FLASH memory segment");
|
||||
|
||||
__ARM.exidx_load_start__ = ALIGN(__rodata_end__ , 4);
|
||||
.ARM.exidx ALIGN(__rodata_end__ , 4) : AT(ALIGN(__rodata_end__ , 4))
|
||||
{
|
||||
__ARM.exidx_start__ = .;
|
||||
__exidx_start = __ARM.exidx_start__;
|
||||
*(.ARM.exidx .ARM.exidx.*)
|
||||
}
|
||||
__ARM.exidx_end__ = __ARM.exidx_start__ + SIZEOF(.ARM.exidx);
|
||||
|
||||
__exidx_end = __ARM.exidx_end__;
|
||||
__ARM.exidx_load_end__ = __ARM.exidx_end__;
|
||||
|
||||
. = ASSERT(__ARM.exidx_end__ >= __FLASH_segment_start__ && __ARM.exidx_end__ <= (__FLASH_segment_start__ + 0x00020000) , "error: .ARM.exidx is too large to fit in FLASH memory segment");
|
||||
|
||||
__fast_load_start__ = ALIGN(__ARM.exidx_end__ , 4);
|
||||
.fast ALIGN(__vectors_ram_end__ , 4) : AT(ALIGN(__ARM.exidx_end__ , 4))
|
||||
{
|
||||
__fast_start__ = .;
|
||||
*(.fast .fast.*)
|
||||
}
|
||||
__fast_end__ = __fast_start__ + SIZEOF(.fast);
|
||||
|
||||
__fast_load_end__ = __fast_load_start__ + SIZEOF(.fast);
|
||||
|
||||
. = ASSERT((__fast_load_start__ + SIZEOF(.fast)) >= __FLASH_segment_start__ && (__fast_load_start__ + SIZEOF(.fast)) <= (__FLASH_segment_start__ + 0x00020000) , "error: .fast is too large to fit in FLASH memory segment");
|
||||
|
||||
.fast_run ALIGN(__vectors_ram_end__ , 4) (NOLOAD) :
|
||||
{
|
||||
__fast_run_start__ = .;
|
||||
. = MAX(__fast_run_start__ + SIZEOF(.fast), .);
|
||||
}
|
||||
__fast_run_end__ = __fast_run_start__ + SIZEOF(.fast_run);
|
||||
|
||||
__fast_run_load_end__ = __fast_run_end__;
|
||||
|
||||
. = ASSERT(__fast_run_end__ >= __RAM_segment_start__ && __fast_run_end__ <= (__RAM_segment_start__ + 0x00004000) , "error: .fast_run is too large to fit in RAM memory segment");
|
||||
|
||||
__data_load_start__ = ALIGN(__fast_load_start__ + SIZEOF(.fast) , 4);
|
||||
.data ALIGN(__fast_run_end__ , 4) : AT(ALIGN(__fast_load_start__ + SIZEOF(.fast) , 4))
|
||||
{
|
||||
__data_start__ = .;
|
||||
*(.data .data.* .gnu.linkonce.d.*)
|
||||
}
|
||||
__data_end__ = __data_start__ + SIZEOF(.data);
|
||||
|
||||
__data_load_end__ = __data_load_start__ + SIZEOF(.data);
|
||||
|
||||
. = ASSERT((__data_load_start__ + SIZEOF(.data)) >= __FLASH_segment_start__ && (__data_load_start__ + SIZEOF(.data)) <= (__FLASH_segment_start__ + 0x00020000) , "error: .data is too large to fit in FLASH memory segment");
|
||||
|
||||
.data_run ALIGN(__fast_run_end__ , 4) (NOLOAD) :
|
||||
{
|
||||
__data_run_start__ = .;
|
||||
. = MAX(__data_run_start__ + SIZEOF(.data), .);
|
||||
}
|
||||
__data_run_end__ = __data_run_start__ + SIZEOF(.data_run);
|
||||
|
||||
__data_run_load_end__ = __data_run_end__;
|
||||
|
||||
. = ASSERT(__data_run_end__ >= __RAM_segment_start__ && __data_run_end__ <= (__RAM_segment_start__ + 0x00004000) , "error: .data_run is too large to fit in RAM memory segment");
|
||||
|
||||
__bss_load_start__ = ALIGN(__data_run_end__ , 4);
|
||||
.bss ALIGN(__data_run_end__ , 4) (NOLOAD) : AT(ALIGN(__data_run_end__ , 4))
|
||||
{
|
||||
__bss_start__ = .;
|
||||
*(.bss .bss.* .gnu.linkonce.b.*) *(COMMON)
|
||||
}
|
||||
__bss_end__ = __bss_start__ + SIZEOF(.bss);
|
||||
|
||||
__bss_load_end__ = __bss_end__;
|
||||
|
||||
. = ASSERT(__bss_end__ >= __RAM_segment_start__ && __bss_end__ <= (__RAM_segment_start__ + 0x00004000) , "error: .bss is too large to fit in RAM memory segment");
|
||||
|
||||
__non_init_load_start__ = ALIGN(__bss_end__ , 4);
|
||||
.non_init ALIGN(__bss_end__ , 4) (NOLOAD) : AT(ALIGN(__bss_end__ , 4))
|
||||
{
|
||||
__non_init_start__ = .;
|
||||
*(.non_init .non_init.*)
|
||||
}
|
||||
__non_init_end__ = __non_init_start__ + SIZEOF(.non_init);
|
||||
|
||||
__non_init_load_end__ = __non_init_end__;
|
||||
|
||||
. = ASSERT(__non_init_end__ >= __RAM_segment_start__ && __non_init_end__ <= (__RAM_segment_start__ + 0x00004000) , "error: .non_init is too large to fit in RAM memory segment");
|
||||
|
||||
__heap_load_start__ = ALIGN(__non_init_end__ , 4);
|
||||
.heap ALIGN(__non_init_end__ , 4) (NOLOAD) : AT(ALIGN(__non_init_end__ , 4))
|
||||
{
|
||||
__heap_start__ = .;
|
||||
*(.heap .heap.*)
|
||||
. = ALIGN(MAX(__heap_start__ + __HEAPSIZE__ , .), 4);
|
||||
}
|
||||
__heap_end__ = __heap_start__ + SIZEOF(.heap);
|
||||
|
||||
__heap_load_end__ = __heap_end__;
|
||||
|
||||
. = ASSERT(__heap_end__ >= __RAM_segment_start__ && __heap_end__ <= (__RAM_segment_start__ + 0x00004000) , "error: .heap is too large to fit in RAM memory segment");
|
||||
|
||||
__stack_load_start__ = ALIGN(__heap_end__ , 4);
|
||||
.stack ALIGN(__heap_end__ , 4) (NOLOAD) : AT(ALIGN(__heap_end__ , 4))
|
||||
{
|
||||
__stack_start__ = .;
|
||||
*(.stack .stack.*)
|
||||
. = ALIGN(MAX(__stack_start__ + __STACKSIZE__ , .), 4);
|
||||
}
|
||||
__stack_end__ = __stack_start__ + SIZEOF(.stack);
|
||||
|
||||
__stack_load_end__ = __stack_end__;
|
||||
|
||||
. = ASSERT(__stack_end__ >= __RAM_segment_start__ && __stack_end__ <= (__RAM_segment_start__ + 0x00004000) , "error: .stack is too large to fit in RAM memory segment");
|
||||
|
||||
__stack_process_load_start__ = ALIGN(__stack_end__ , 4);
|
||||
.stack_process ALIGN(__stack_end__ , 4) (NOLOAD) : AT(ALIGN(__stack_end__ , 4))
|
||||
{
|
||||
__stack_process_start__ = .;
|
||||
*(.stack_process .stack_process.*)
|
||||
. = ALIGN(MAX(__stack_process_start__ + __STACKSIZE_PROCESS__ , .), 4);
|
||||
}
|
||||
__stack_process_end__ = __stack_process_start__ + SIZEOF(.stack_process);
|
||||
|
||||
__stack_process_load_end__ = __stack_process_end__;
|
||||
|
||||
. = ASSERT(__stack_process_end__ >= __RAM_segment_start__ && __stack_process_end__ <= (__RAM_segment_start__ + 0x00004000) , "error: .stack_process is too large to fit in RAM memory segment");
|
||||
|
||||
__tbss_load_start__ = ALIGN(__stack_process_end__ , 4);
|
||||
.tbss ALIGN(__stack_process_end__ , 4) (NOLOAD) : AT(ALIGN(__stack_process_end__ , 4))
|
||||
{
|
||||
__tbss_start__ = .;
|
||||
*(.tbss .tbss.*)
|
||||
}
|
||||
__tbss_end__ = __tbss_start__ + SIZEOF(.tbss);
|
||||
|
||||
__tbss_load_end__ = __tbss_end__;
|
||||
|
||||
. = ASSERT(__tbss_end__ >= __RAM_segment_start__ && __tbss_end__ <= (__RAM_segment_start__ + 0x00004000) , "error: .tbss is too large to fit in RAM memory segment");
|
||||
|
||||
__tdata_load_start__ = ALIGN(__data_load_start__ + SIZEOF(.data) , 4);
|
||||
.tdata ALIGN(__tbss_end__ , 4) : AT(ALIGN(__data_load_start__ + SIZEOF(.data) , 4))
|
||||
{
|
||||
__tdata_start__ = .;
|
||||
*(.tdata .tdata.*)
|
||||
}
|
||||
__tdata_end__ = __tdata_start__ + SIZEOF(.tdata);
|
||||
|
||||
__tdata_load_end__ = __tdata_load_start__ + SIZEOF(.tdata);
|
||||
|
||||
__FLASH_segment_used_end__ = ALIGN(__data_load_start__ + SIZEOF(.data) , 4) + SIZEOF(.tdata);
|
||||
|
||||
. = ASSERT((__tdata_load_start__ + SIZEOF(.tdata)) >= __FLASH_segment_start__ && (__tdata_load_start__ + SIZEOF(.tdata)) <= (__FLASH_segment_start__ + 0x00020000) , "error: .tdata is too large to fit in FLASH memory segment");
|
||||
|
||||
.tdata_run ALIGN(__tbss_end__ , 4) (NOLOAD) :
|
||||
{
|
||||
__tdata_run_start__ = .;
|
||||
. = MAX(__tdata_run_start__ + SIZEOF(.tdata), .);
|
||||
}
|
||||
__tdata_run_end__ = __tdata_run_start__ + SIZEOF(.tdata_run);
|
||||
|
||||
__tdata_run_load_end__ = __tdata_run_end__;
|
||||
|
||||
__RAM_segment_used_end__ = ALIGN(__tbss_end__ , 4) + SIZEOF(.tdata_run);
|
||||
|
||||
. = ASSERT(__tdata_run_end__ >= __RAM_segment_start__ && __tdata_run_end__ <= (__RAM_segment_start__ + 0x00004000) , "error: .tdata_run is too large to fit in RAM memory segment");
|
||||
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,127 @@
|
|||
/****************************************************************************************
|
||||
| Description: bootloader interrupt vector table source file
|
||||
| File Name: vectors.c
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| C O P Y R I G H T
|
||||
|----------------------------------------------------------------------------------------
|
||||
| Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| L I C E N S E
|
||||
|----------------------------------------------------------------------------------------
|
||||
| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
||||
| modify it under the terms of the GNU General Public License as published by the Free
|
||||
| Software Foundation, either version 3 of the License, or (at your option) any later
|
||||
| version.
|
||||
|
|
||||
| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||||
| PURPOSE. See the GNU General Public License for more details.
|
||||
|
|
||||
| You should have received a copy of the GNU General Public License along with OpenBLT.
|
||||
| If not, see <http://www.gnu.org/licenses/>.
|
||||
|
|
||||
| A special exception to the GPL is included to allow you to distribute a combined work
|
||||
| that includes OpenBLT without being obliged to provide the source code for any
|
||||
| proprietary components. The exception text is included at the bottom of the license
|
||||
| file <license.html>.
|
||||
|
|
||||
****************************************************************************************/
|
||||
|
||||
/****************************************************************************************
|
||||
* Include files
|
||||
****************************************************************************************/
|
||||
#include "boot.h" /* bootloader generic header */
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* External functions
|
||||
****************************************************************************************/
|
||||
extern void reset_handler(void); /* implemented in cstart.s */
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* External data declarations
|
||||
****************************************************************************************/
|
||||
extern blt_int32u __stack_end__; /* stack end address (memory.x) */
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: UnusedISR
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: none
|
||||
** DESCRIPTION: Catch-all for unused interrrupt service routines.
|
||||
**
|
||||
****************************************************************************************/
|
||||
void UnusedISR(void)
|
||||
{
|
||||
/* unexpected interrupt occured, so trigger an assertion to halt the system */
|
||||
ASSERT_RT(BLT_FALSE);
|
||||
} /*** end of UnusedISR ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* I N T E R R U P T V E C T O R T A B L E
|
||||
****************************************************************************************/
|
||||
typedef union
|
||||
{
|
||||
void (*func)(void); /* for ISR function pointers */
|
||||
blt_int32u ptr; /* for stack pointer entry */
|
||||
}tIsrFunc; /* type for vector table entries */
|
||||
|
||||
__attribute__ ((section(".vectors")))
|
||||
const tIsrFunc _vectors[] =
|
||||
{
|
||||
{ .ptr = (blt_int32u)&__stack_end__ }, /* the initial stack pointer */
|
||||
reset_handler, /* the reset handler */
|
||||
UnusedISR, /* NMI Handler */
|
||||
UnusedISR, /* Hard Fault Handler */
|
||||
UnusedISR, /* MPU Fault Handler */
|
||||
UnusedISR, /* Bus Fault Handler */
|
||||
UnusedISR, /* Usage Fault Handler */
|
||||
UnusedISR, /* Reserved */
|
||||
UnusedISR, /* Reserved */
|
||||
UnusedISR, /* Reserved */
|
||||
UnusedISR, /* Reserved */
|
||||
UnusedISR, /* SVCall Handler */
|
||||
UnusedISR, /* Debug Monitor Handler */
|
||||
UnusedISR, /* Reserved */
|
||||
UnusedISR, /* PendSV Handler */
|
||||
UnusedISR, /* SysTick Handler */
|
||||
UnusedISR, /* 0 - DMA Handler */
|
||||
UnusedISR, /* 1 - GPIO_EVEN Handler */
|
||||
UnusedISR, /* 2 - TIMER0 Handler */
|
||||
UnusedISR, /* 3 - USART0_RX Handler */
|
||||
UnusedISR, /* 4 - USART0_TX Handler */
|
||||
UnusedISR, /* 5 - ACMP0 Handler */
|
||||
UnusedISR, /* 6 - ADC0 Handler */
|
||||
UnusedISR, /* 7 - DAC0 Handler */
|
||||
UnusedISR, /* 8 - I2C0 Handler */
|
||||
UnusedISR, /* 9 - GPIO_ODD Handler */
|
||||
UnusedISR, /* 10 - TIMER1 Handler */
|
||||
UnusedISR, /* 11 - TIMER2 Handler */
|
||||
UnusedISR, /* 12 - USART1_RX Handler */
|
||||
UnusedISR, /* 13 - USART1_TX Handler */
|
||||
UnusedISR, /* 14 - USART2_RX Handler */
|
||||
UnusedISR, /* 15 - USART2_TX Handler */
|
||||
UnusedISR, /* 16 - UART0_RX Handler */
|
||||
UnusedISR, /* 17 - UART0_TX Handler */
|
||||
UnusedISR, /* 18 - LEUART0 Handler */
|
||||
UnusedISR, /* 19 - LEUART1 Handler */
|
||||
UnusedISR, /* 20 - LETIMER0 Handler */
|
||||
UnusedISR, /* 21 - PCNT0 Handler */
|
||||
UnusedISR, /* 22 - PCNT1 Handler */
|
||||
UnusedISR, /* 23 - PCNT2 Handler */
|
||||
UnusedISR, /* 24 - RTC Handler */
|
||||
UnusedISR, /* 25 - CMU Handler */
|
||||
UnusedISR, /* 26 - VCMP Handler */
|
||||
UnusedISR, /* 27 - LCD Handler */
|
||||
UnusedISR, /* 28 - MSC Handler */
|
||||
UnusedISR /* 29 - AES Handler */
|
||||
};
|
||||
|
||||
|
||||
/************************************ end of hw.c **************************************/
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,132 @@
|
|||
/****************************************************************************************
|
||||
| Description: bootloader cpu module source file
|
||||
| File Name: cpu.c
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| C O P Y R I G H T
|
||||
|----------------------------------------------------------------------------------------
|
||||
| Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| L I C E N S E
|
||||
|----------------------------------------------------------------------------------------
|
||||
| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
||||
| modify it under the terms of the GNU General Public License as published by the Free
|
||||
| Software Foundation, either version 3 of the License, or (at your option) any later
|
||||
| version.
|
||||
|
|
||||
| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||||
| PURPOSE. See the GNU General Public License for more details.
|
||||
|
|
||||
| You should have received a copy of the GNU General Public License along with OpenBLT.
|
||||
| If not, see <http://www.gnu.org/licenses/>.
|
||||
|
|
||||
| A special exception to the GPL is included to allow you to distribute a combined work
|
||||
| that includes OpenBLT without being obliged to provide the source code for any
|
||||
| proprietary components. The exception text is included at the bottom of the license
|
||||
| file <license.html>.
|
||||
|
|
||||
****************************************************************************************/
|
||||
|
||||
/****************************************************************************************
|
||||
* Include files
|
||||
****************************************************************************************/
|
||||
#include "boot.h" /* bootloader generic header */
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Macro definitions
|
||||
****************************************************************************************/
|
||||
#define CPU_USER_PROGRAM_STARTADDR_PTR ((blt_addr) 0x00004004)
|
||||
#define CPU_USER_PROGRAM_VECTABLE_OFFSET ((blt_int32u)0x00004000)
|
||||
|
||||
/****************************************************************************************
|
||||
* Register definitions
|
||||
****************************************************************************************/
|
||||
/* vector table offset register */
|
||||
#define SCB_VTOR (*((volatile blt_int32u *) 0xE000ED08))
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* External functions
|
||||
****************************************************************************************/
|
||||
extern void reset_handler(void); /* implemented in cstart.s */
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: CpuStartUserProgram
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: none
|
||||
** DESCRIPTION: Starts the user program, if one is present. In this case this function
|
||||
** does not return.
|
||||
**
|
||||
****************************************************************************************/
|
||||
void CpuStartUserProgram(void)
|
||||
{
|
||||
void (*pProgResetHandler)(void);
|
||||
|
||||
/* check if a user program is present by verifying the checksum */
|
||||
if (NvmVerifyChecksum() == BLT_FALSE)
|
||||
{
|
||||
/* not a valid user program so it cannot be started */
|
||||
return;
|
||||
}
|
||||
/* release the communication interface */
|
||||
ComFree();
|
||||
/* remap user program's vector table */
|
||||
SCB_VTOR = CPU_USER_PROGRAM_VECTABLE_OFFSET & (blt_int32u)0x1FFFFF80;
|
||||
/* set the address where the bootloader needs to jump to. this is the address of
|
||||
* the 2nd entry in the user program's vector table. this address points to the
|
||||
* user program's reset handler.
|
||||
*/
|
||||
pProgResetHandler = (void(*)(void))(*((blt_addr*)CPU_USER_PROGRAM_STARTADDR_PTR));
|
||||
/* start the user program by activating its reset interrupt service routine */
|
||||
pProgResetHandler();
|
||||
} /*** end of CpuStartUserProgram ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: CpuMemCopy
|
||||
** PARAMETER: dest destination address for the data.
|
||||
** src source address of the data.
|
||||
** len length of the data in bytes.
|
||||
** RETURN VALUE: none
|
||||
** DESCRIPTION: Copies data from the source to the destination address.
|
||||
**
|
||||
****************************************************************************************/
|
||||
void CpuMemCopy(blt_addr dest, blt_addr src, blt_int16u len)
|
||||
{
|
||||
blt_int8u *from, *to;
|
||||
|
||||
/* set casted pointers */
|
||||
from = (blt_int8u *)src;
|
||||
to = (blt_int8u *)dest;
|
||||
|
||||
/* copy all bytes from source address to destination address */
|
||||
while(len-- > 0)
|
||||
{
|
||||
/* store byte value from source to destination */
|
||||
*to++ = *from++;
|
||||
/* keep the watchdog happy */
|
||||
CopService();
|
||||
}
|
||||
} /*** end of CpuMemCopy ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: CpuReset
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: none
|
||||
** DESCRIPTION: Perform a soft reset of the microcontroller by starting from the reset
|
||||
** ISR.
|
||||
**
|
||||
****************************************************************************************/
|
||||
void CpuReset(void)
|
||||
{
|
||||
/* perform a software reset by calling the reset ISR routine */
|
||||
reset_handler();
|
||||
} /*** end of CpuReset ***/
|
||||
|
||||
|
||||
/*********************************** end of cpu.c **************************************/
|
||||
|
|
@ -0,0 +1,44 @@
|
|||
/****************************************************************************************
|
||||
| Description: bootloader cpu module header file
|
||||
| File Name: cpu.h
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| C O P Y R I G H T
|
||||
|----------------------------------------------------------------------------------------
|
||||
| Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| L I C E N S E
|
||||
|----------------------------------------------------------------------------------------
|
||||
| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
||||
| modify it under the terms of the GNU General Public License as published by the Free
|
||||
| Software Foundation, either version 3 of the License, or (at your option) any later
|
||||
| version.
|
||||
|
|
||||
| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||||
| PURPOSE. See the GNU General Public License for more details.
|
||||
|
|
||||
| You should have received a copy of the GNU General Public License along with OpenBLT.
|
||||
| If not, see <http://www.gnu.org/licenses/>.
|
||||
|
|
||||
| A special exception to the GPL is included to allow you to distribute a combined work
|
||||
| that includes OpenBLT without being obliged to provide the source code for any
|
||||
| proprietary components. The exception text is included at the bottom of the license
|
||||
| file <license.html>.
|
||||
|
|
||||
****************************************************************************************/
|
||||
#ifndef CPU_H
|
||||
#define CPU_H
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Function prototypes
|
||||
****************************************************************************************/
|
||||
void CpuStartUserProgram(void);
|
||||
void CpuMemCopy(blt_addr dest, blt_addr src, blt_int16u len);
|
||||
void CpuReset(void);
|
||||
|
||||
|
||||
#endif /* CPU_H */
|
||||
/*********************************** end of cpu.h **************************************/
|
||||
|
|
@ -0,0 +1,745 @@
|
|||
/****************************************************************************************
|
||||
| Description: bootloader flash driver source file
|
||||
| File Name: flash.c
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| C O P Y R I G H T
|
||||
|----------------------------------------------------------------------------------------
|
||||
| Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| L I C E N S E
|
||||
|----------------------------------------------------------------------------------------
|
||||
| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
||||
| modify it under the terms of the GNU General Public License as published by the Free
|
||||
| Software Foundation, either version 3 of the License, or (at your option) any later
|
||||
| version.
|
||||
|
|
||||
| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||||
| PURPOSE. See the GNU General Public License for more details.
|
||||
|
|
||||
| You should have received a copy of the GNU General Public License along with OpenBLT.
|
||||
| If not, see <http://www.gnu.org/licenses/>.
|
||||
|
|
||||
| A special exception to the GPL is included to allow you to distribute a combined work
|
||||
| that includes OpenBLT without being obliged to provide the source code for any
|
||||
| proprietary components. The exception text is included at the bottom of the license
|
||||
| file <license.html>.
|
||||
|
|
||||
****************************************************************************************/
|
||||
|
||||
/****************************************************************************************
|
||||
* Include files
|
||||
****************************************************************************************/
|
||||
#include "boot.h" /* bootloader generic header */
|
||||
#include "efm32_msc.h" /* MSC driver from EFM32 library */
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Macro definitions
|
||||
****************************************************************************************/
|
||||
#define FLASH_INVALID_SECTOR (0xff)
|
||||
#define FLASH_INVALID_ADDRESS (0xffffffff)
|
||||
#define FLASH_WRITE_BLOCK_SIZE (512)
|
||||
#define FLASH_TOTAL_SECTORS (sizeof(flashLayout)/sizeof(flashLayout[0]))
|
||||
#define FLASH_VECTOR_TABLE_CS_OFFSET (0x0B8)
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Type definitions
|
||||
****************************************************************************************/
|
||||
/* flash sector descriptor type */
|
||||
typedef struct
|
||||
{
|
||||
blt_addr sector_start; /* sector start address */
|
||||
blt_int32u sector_size; /* sector size in bytes */
|
||||
blt_int8u sector_num; /* sector number */
|
||||
} tFlashSector; /* flash sector description */
|
||||
|
||||
/* programming is done per block of max FLASH_WRITE_BLOCK_SIZE. for this a flash block
|
||||
* manager is implemented in this driver. this flash block manager depends on this
|
||||
* flash block info structure. It holds the base address of the flash block and the
|
||||
* data that should be programmed into the flash block. The .base_addr must be a multiple
|
||||
* of FLASH_WRITE_BLOCK_SIZE.
|
||||
*/
|
||||
typedef struct
|
||||
{
|
||||
blt_addr base_addr;
|
||||
blt_int8u data[FLASH_WRITE_BLOCK_SIZE];
|
||||
} tFlashBlockInfo;
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Function prototypes
|
||||
****************************************************************************************/
|
||||
static blt_bool FlashInitBlock(tFlashBlockInfo *block, blt_addr address);
|
||||
static tFlashBlockInfo *FlashSwitchBlock(tFlashBlockInfo *block, blt_addr base_addr);
|
||||
static blt_bool FlashAddToBlock(tFlashBlockInfo *block, blt_addr address,
|
||||
blt_int8u *data, blt_int16u len);
|
||||
static blt_bool FlashWriteBlock(tFlashBlockInfo *block);
|
||||
static blt_bool FlashEraseSectors(blt_int8u first_sector, blt_int8u last_sector);
|
||||
static blt_int8u FlashGetSector(blt_addr address);
|
||||
static blt_addr FlashGetSectorBaseAddr(blt_int8u sector);
|
||||
static blt_addr FlashGetSectorSize(blt_int8u sector);
|
||||
static blt_int32u FlashCalcPageSize(void);
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Local constant declarations
|
||||
****************************************************************************************/
|
||||
/* The current flash layout does not reflect the minimum sector size of the physical
|
||||
* flash (1 - 2kb), because this would make the table quit long and a waste of ROM. The
|
||||
* minimum sector size is only really needed when erasing the flash. This can still be
|
||||
* done in combination with macro FLASH_ERASE_BLOCK_SIZE.
|
||||
*/
|
||||
static const tFlashSector flashLayout[] =
|
||||
{
|
||||
/* { 0x00000000, 0x02000, 0}, flash sector 0 - reserved for bootloader */
|
||||
/* { 0x00002000, 0x02000, 1}, flash sector 1 - reserved for bootloader */
|
||||
{ 0x00004000, 0x02000, 2}, /* flash sector 2 - 8kb */
|
||||
{ 0x00006000, 0x02000, 3}, /* flash sector 3 - 8kb */
|
||||
#if (BOOT_NVM_SIZE_KB > 32)
|
||||
{ 0x00008000, 0x02000, 4}, /* flash sector 4 - 8kb */
|
||||
{ 0x0000A000, 0x02000, 5}, /* flash sector 5 - 8kb */
|
||||
{ 0x0000C000, 0x02000, 6}, /* flash sector 6 - 8kb */
|
||||
{ 0x0000E000, 0x02000, 7}, /* flash sector 7 - 8kb */
|
||||
#endif
|
||||
#if (BOOT_NVM_SIZE_KB > 64)
|
||||
{ 0x00010000, 0x02000, 8}, /* flash sector 8 - 8kb */
|
||||
{ 0x00012000, 0x02000, 9}, /* flash sector 9 - 8kb */
|
||||
{ 0x00014000, 0x02000, 10}, /* flash sector 10 - 8kb */
|
||||
{ 0x00016000, 0x02000, 11}, /* flash sector 11 - 8kb */
|
||||
{ 0x00018000, 0x02000, 12}, /* flash sector 12 - 8kb */
|
||||
{ 0x0001A000, 0x02000, 13}, /* flash sector 13 - 8kb */
|
||||
{ 0x0001C000, 0x02000, 14}, /* flash sector 14 - 8kb */
|
||||
{ 0x0001E000, 0x02000, 15}, /* flash sector 15 - 8kb */
|
||||
#endif
|
||||
#if (BOOT_NVM_SIZE_KB > 128)
|
||||
{ 0x00020000, 0x08000, 16}, /* flash sector 16 - 32kb */
|
||||
{ 0x00028000, 0x08000, 17}, /* flash sector 17 - 32kb */
|
||||
{ 0x00030000, 0x08000, 18}, /* flash sector 18 - 32kb */
|
||||
{ 0x00038000, 0x08000, 19}, /* flash sector 19 - 32kb */
|
||||
#endif
|
||||
#if (BOOT_NVM_SIZE_KB > 256)
|
||||
{ 0x00040000, 0x08000, 20}, /* flash sector 20 - 32kb */
|
||||
{ 0x00048000, 0x08000, 21}, /* flash sector 21 - 32kb */
|
||||
{ 0x00050000, 0x08000, 22}, /* flash sector 22 - 32kb */
|
||||
{ 0x00058000, 0x08000, 23}, /* flash sector 23 - 32kb */
|
||||
{ 0x00060000, 0x08000, 24}, /* flash sector 24 - 32kb */
|
||||
{ 0x00068000, 0x08000, 25}, /* flash sector 25 - 32kb */
|
||||
{ 0x00070000, 0x08000, 26}, /* flash sector 26 - 32kb */
|
||||
{ 0x00078000, 0x08000, 27}, /* flash sector 27 - 32kb */
|
||||
#endif
|
||||
#if (BOOT_NVM_SIZE_KB > 512)
|
||||
#error "BOOT_NVM_SIZE_KB > 512 is currently not supported."
|
||||
#endif
|
||||
};
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Local data declarations
|
||||
****************************************************************************************/
|
||||
/* The smallest amount of flash that can be programmed is FLASH_WRITE_BLOCK_SIZE. A flash
|
||||
* block manager is implemented in this driver and stores info in this variable. Whenever
|
||||
* new data should be flashed, it is first added to a RAM buffer, which is part of this
|
||||
* variable. Whenever the RAM buffer, which has the size of a flash block, is full or
|
||||
* data needs to be written to a different block, the contents of the RAM buffer are
|
||||
* programmed to flash. The flash block manager requires some software overhead, yet
|
||||
* results is faster flash programming because data is first harvested, ideally until
|
||||
* there is enough to program an entire flash block, before the flash device is actually
|
||||
* operated on.
|
||||
*/
|
||||
static tFlashBlockInfo blockInfo;
|
||||
|
||||
/* The first block of the user program holds the vector table, which on the STM32 is
|
||||
* also the where the checksum is written to. Is it likely that the vector table is
|
||||
* first flashed and then, at the end of the programming sequence, the checksum. This
|
||||
* means that this flash block need to be written to twice. Normally this is not a
|
||||
* problem with flash memory, as long as you write the same values to those bytes that
|
||||
* are not supposed to be changed and the locations where you do write to are still in
|
||||
* the erased 0xFF state. Unfortunately, writing twice to flash this way, does not work
|
||||
* reliably on all micros. This is why we need to have an extra block, the bootblock,
|
||||
* placed under the management of the block manager. This way is it possible to implement
|
||||
* functionality so that the bootblock is only written to once at the end of the
|
||||
* programming sequency.
|
||||
*/
|
||||
static tFlashBlockInfo bootBlockInfo;
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashInit
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: none
|
||||
** DESCRIPTION: Initializes the flash driver.
|
||||
**
|
||||
****************************************************************************************/
|
||||
void FlashInit(void)
|
||||
{
|
||||
/* enable the flash controller for writing */
|
||||
MSC_Init();
|
||||
/* init the flash block info structs by setting the address to an invalid address */
|
||||
blockInfo.base_addr = FLASH_INVALID_ADDRESS;
|
||||
bootBlockInfo.base_addr = FLASH_INVALID_ADDRESS;
|
||||
} /*** end of FlashInit ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashWrite
|
||||
** PARAMETER: addr start address
|
||||
** len length in bytes
|
||||
** data pointer to the data buffer.
|
||||
** RETURN VALUE: BLT_TRUE if successful, BLT_FALSE otherwise.
|
||||
** DESCRIPTION: Writes the data to flash through a flash block manager. Note that this
|
||||
** function also checks that no data is programmed outside the flash
|
||||
** memory region, so the bootloader can never be overwritten.
|
||||
**
|
||||
****************************************************************************************/
|
||||
blt_bool FlashWrite(blt_addr addr, blt_int32u len, blt_int8u *data)
|
||||
{
|
||||
blt_addr base_addr;
|
||||
|
||||
/* make sure the addresses are within the flash device */
|
||||
if ( (FlashGetSector(addr) == FLASH_INVALID_SECTOR) || \
|
||||
(FlashGetSector(addr+len-1) == FLASH_INVALID_SECTOR) )
|
||||
{
|
||||
return BLT_FALSE;
|
||||
}
|
||||
|
||||
/* if this is the bootblock, then let the boot block manager handle it */
|
||||
base_addr = (addr/FLASH_WRITE_BLOCK_SIZE)*FLASH_WRITE_BLOCK_SIZE;
|
||||
if (base_addr == flashLayout[0].sector_start)
|
||||
{
|
||||
/* let the boot block manager handle it */
|
||||
return FlashAddToBlock(&bootBlockInfo, addr, data, len);
|
||||
}
|
||||
/* let the block manager handle it */
|
||||
return FlashAddToBlock(&blockInfo, addr, data, len);
|
||||
} /*** end of FlashWrite ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashErase
|
||||
** PARAMETER: addr start address
|
||||
** len length in bytes
|
||||
** RETURN VALUE: BLT_TRUE if successful, BLT_FALSE otherwise.
|
||||
** DESCRIPTION: Erases the flash memory. Note that this function also checks that no
|
||||
** data is erased outside the flash memory region, so the bootloader can
|
||||
** never be erased.
|
||||
**
|
||||
****************************************************************************************/
|
||||
blt_bool FlashErase(blt_addr addr, blt_int32u len)
|
||||
{
|
||||
blt_int8u first_sector;
|
||||
blt_int8u last_sector;
|
||||
|
||||
/* obtain the first and last sector number */
|
||||
first_sector = FlashGetSector(addr);
|
||||
last_sector = FlashGetSector(addr+len-1);
|
||||
/* check them */
|
||||
if ( (first_sector == FLASH_INVALID_SECTOR) || (last_sector == FLASH_INVALID_SECTOR) )
|
||||
{
|
||||
return BLT_FALSE;
|
||||
}
|
||||
/* erase the sectors */
|
||||
return FlashEraseSectors(first_sector, last_sector);
|
||||
} /*** end of FlashErase ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashWriteChecksum
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: BLT_TRUE is successful, BTL_FALSE otherwise.
|
||||
** DESCRIPTION: Writes a checksum of the user program to non-volatile memory. This is
|
||||
** performed once the entire user program has been programmed. Through
|
||||
** the checksum, the bootloader can check if the programming session
|
||||
** was completed, which indicates that a valid user programming is
|
||||
** present and can be started.
|
||||
**
|
||||
****************************************************************************************/
|
||||
blt_bool FlashWriteChecksum(void)
|
||||
{
|
||||
blt_int32u signature_checksum = 0;
|
||||
|
||||
/* for the STM32 target we defined the checksum as the Two's complement value of the
|
||||
* sum of the first 7 exception addresses.
|
||||
*
|
||||
* Layout of the vector table:
|
||||
* 0x00000000 Initial stack pointer
|
||||
* 0x00000004 Reset Handler
|
||||
* 0x00000008 NMI Handler
|
||||
* 0x0000000C Hard Fault Handler
|
||||
* 0x00000010 MPU Fault Handler
|
||||
* 0x00000014 Bus Fault Handler
|
||||
* 0x00000018 Usage Fault Handler
|
||||
*
|
||||
* signature_checksum = Two's complement of (SUM(exception address values))
|
||||
*
|
||||
* the bootloader writes this 32-bit checksum value right after the vector table
|
||||
* of the user program. note that this means one extra dummy entry must be added
|
||||
* at the end of the user program's vector table to reserve storage space for the
|
||||
* checksum.
|
||||
*/
|
||||
|
||||
/* first check that the bootblock contains valid data. if not, this means the
|
||||
* bootblock is not part of the reprogramming this time and therefore no
|
||||
* new checksum needs to be written
|
||||
*/
|
||||
if (bootBlockInfo.base_addr == FLASH_INVALID_ADDRESS)
|
||||
{
|
||||
return BLT_TRUE;
|
||||
}
|
||||
|
||||
/* compute the checksum. note that the user program's vectors are not yet written
|
||||
* to flash but are present in the bootblock data structure at this point.
|
||||
*/
|
||||
signature_checksum += *((blt_int32u*)(&bootBlockInfo.data[0+0x00]));
|
||||
signature_checksum += *((blt_int32u*)(&bootBlockInfo.data[0+0x04]));
|
||||
signature_checksum += *((blt_int32u*)(&bootBlockInfo.data[0+0x08]));
|
||||
signature_checksum += *((blt_int32u*)(&bootBlockInfo.data[0+0x0C]));
|
||||
signature_checksum += *((blt_int32u*)(&bootBlockInfo.data[0+0x10]));
|
||||
signature_checksum += *((blt_int32u*)(&bootBlockInfo.data[0+0x14]));
|
||||
signature_checksum += *((blt_int32u*)(&bootBlockInfo.data[0+0x18]));
|
||||
signature_checksum = ~signature_checksum; /* one's complement */
|
||||
signature_checksum += 1; /* two's complement */
|
||||
|
||||
/* write the checksum */
|
||||
return FlashWrite(flashLayout[0].sector_start+FLASH_VECTOR_TABLE_CS_OFFSET,
|
||||
sizeof(blt_addr), (blt_int8u*)&signature_checksum);
|
||||
} /*** end of FlashWriteChecksum ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashVerifyChecksum
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: BLT_TRUE is successful, BTL_FALSE otherwise.
|
||||
** DESCRIPTION: Verifies the checksum, which indicates that a valid user program is
|
||||
** present and can be started.
|
||||
**
|
||||
****************************************************************************************/
|
||||
blt_bool FlashVerifyChecksum(void)
|
||||
{
|
||||
blt_int32u signature_checksum = 0;
|
||||
|
||||
/* verify the checksum based on how it was written by CpuWriteChecksum() */
|
||||
signature_checksum += *((blt_int32u*)(flashLayout[0].sector_start));
|
||||
signature_checksum += *((blt_int32u*)(flashLayout[0].sector_start+0x04));
|
||||
signature_checksum += *((blt_int32u*)(flashLayout[0].sector_start+0x08));
|
||||
signature_checksum += *((blt_int32u*)(flashLayout[0].sector_start+0x0C));
|
||||
signature_checksum += *((blt_int32u*)(flashLayout[0].sector_start+0x10));
|
||||
signature_checksum += *((blt_int32u*)(flashLayout[0].sector_start+0x14));
|
||||
signature_checksum += *((blt_int32u*)(flashLayout[0].sector_start+0x18));
|
||||
signature_checksum += *((blt_int32u*)(flashLayout[0].sector_start+FLASH_VECTOR_TABLE_CS_OFFSET));
|
||||
/* sum should add up to an unsigned 32-bit value of 0 */
|
||||
if (signature_checksum == 0)
|
||||
{
|
||||
/* checksum okay */
|
||||
return BLT_TRUE;
|
||||
}
|
||||
/* checksum incorrect */
|
||||
return BLT_FALSE;
|
||||
} /*** end of FlashVerifyChecksum ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashDone
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: BLT_TRUE is succesful, BLT_FALSE otherwise.
|
||||
** DESCRIPTION: Finilizes the flash driver operations. There could still be data in
|
||||
** the currently active block that needs to be flashed.
|
||||
**
|
||||
****************************************************************************************/
|
||||
blt_bool FlashDone(void)
|
||||
{
|
||||
/* check if there is still data waiting to be programmed in the boot block */
|
||||
if (bootBlockInfo.base_addr != FLASH_INVALID_ADDRESS)
|
||||
{
|
||||
if (FlashWriteBlock(&bootBlockInfo) == BLT_FALSE)
|
||||
{
|
||||
return BLT_FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
/* check if there is still data waiting to be programmed */
|
||||
if (blockInfo.base_addr != FLASH_INVALID_ADDRESS)
|
||||
{
|
||||
if (FlashWriteBlock(&blockInfo) == BLT_FALSE)
|
||||
{
|
||||
return BLT_FALSE;
|
||||
}
|
||||
}
|
||||
/* disable the flash controller for writing */
|
||||
MSC_Deinit();
|
||||
/* still here so all is okay */
|
||||
return BLT_TRUE;
|
||||
} /*** end of FlashDone ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashInitBlock
|
||||
** PARAMETER: block pointer to flash block info structure to operate on.
|
||||
** address base address of the block data.
|
||||
** RETURN VALUE: BLT_TRUE is succesful, BLT_FALSE otherwise.
|
||||
** DESCRIPTION: Copies data currently in flash to the block->data and sets the
|
||||
** base address.
|
||||
**
|
||||
****************************************************************************************/
|
||||
static blt_bool FlashInitBlock(tFlashBlockInfo *block, blt_addr address)
|
||||
{
|
||||
/* check address alignment */
|
||||
if ((address % FLASH_WRITE_BLOCK_SIZE) != 0)
|
||||
{
|
||||
return BLT_FALSE;
|
||||
}
|
||||
/* make sure that we are initializing a new block and not the same one */
|
||||
if (block->base_addr == address)
|
||||
{
|
||||
/* block already initialized, so nothing to do */
|
||||
return BLT_TRUE;
|
||||
}
|
||||
/* set the base address and copies the current data from flash */
|
||||
block->base_addr = address;
|
||||
CpuMemCopy((blt_addr)block->data, address, FLASH_WRITE_BLOCK_SIZE);
|
||||
return BLT_TRUE;
|
||||
} /*** end of FlashInitBlock ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashSwitchBlock
|
||||
** PARAMETER: block pointer to flash block info structure to operate on.
|
||||
** base_addr base address for the next block
|
||||
** RETURN VALUE: the pointer of the block info struct that is no being used, or a NULL
|
||||
** pointer in case of error.
|
||||
** DESCRIPTION: Switches blocks by programming the current one and initializing the
|
||||
** next.
|
||||
**
|
||||
****************************************************************************************/
|
||||
static tFlashBlockInfo *FlashSwitchBlock(tFlashBlockInfo *block, blt_addr base_addr)
|
||||
{
|
||||
/* check if a switch needs to be made away from the boot block. in this case the boot
|
||||
* block shouldn't be written yet, because this is done at the end of the programming
|
||||
* session by FlashDone(), this is right after the checksum was written.
|
||||
*/
|
||||
if (block == &bootBlockInfo)
|
||||
{
|
||||
/* switch from the boot block to the generic block info structure */
|
||||
block = &blockInfo;
|
||||
}
|
||||
/* check if a switch back into the bootblock is needed. in this case the generic block
|
||||
* doesn't need to be written here yet.
|
||||
*/
|
||||
else if (base_addr == flashLayout[0].sector_start)
|
||||
{
|
||||
/* switch from the generic block to the boot block info structure */
|
||||
block = &bootBlockInfo;
|
||||
base_addr = flashLayout[0].sector_start;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* need to switch to a new block, so program the current one and init the next */
|
||||
if (FlashWriteBlock(block) == BLT_FALSE)
|
||||
{
|
||||
return BLT_NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/* initialize tne new block when necessary */
|
||||
if (FlashInitBlock(block, base_addr) == BLT_FALSE)
|
||||
{
|
||||
return BLT_NULL;
|
||||
}
|
||||
|
||||
/* still here to all is okay */
|
||||
return block;
|
||||
} /*** end of FlashSwitchBlock ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashAddToBlock
|
||||
** PARAMETER: block pointer to flash block info structure to operate on.
|
||||
** address flash destination address
|
||||
** data pointer to the byte array with data
|
||||
** len number of bytes to add to the block
|
||||
** RETURN VALUE: BLT_TRUE if successful, BLT_FALSE otherwise.
|
||||
** DESCRIPTION: Programming is done per block. This function adds data to the block
|
||||
** that is currently collecting data to be written to flash. If the
|
||||
** address is outside of the current block, the current block is written
|
||||
** to flash an a new block is initialized.
|
||||
**
|
||||
****************************************************************************************/
|
||||
static blt_bool FlashAddToBlock(tFlashBlockInfo *block, blt_addr address,
|
||||
blt_int8u *data, blt_int16u len)
|
||||
{
|
||||
blt_addr current_base_addr;
|
||||
blt_int8u *dst;
|
||||
blt_int8u *src;
|
||||
|
||||
/* determine the current base address */
|
||||
current_base_addr = (address/FLASH_WRITE_BLOCK_SIZE)*FLASH_WRITE_BLOCK_SIZE;
|
||||
|
||||
/* make sure the blockInfo is not uninitialized */
|
||||
if (block->base_addr == FLASH_INVALID_ADDRESS)
|
||||
{
|
||||
/* initialize the blockInfo struct for the current block */
|
||||
if (FlashInitBlock(block, current_base_addr) == BLT_FALSE)
|
||||
{
|
||||
return BLT_FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
/* check if the new data fits in the current block */
|
||||
if (block->base_addr != current_base_addr)
|
||||
{
|
||||
/* need to switch to a new block, so program the current one and init the next */
|
||||
block = FlashSwitchBlock(block, current_base_addr);
|
||||
if (block == BLT_NULL)
|
||||
{
|
||||
return BLT_FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
/* add the data to the current block, but check for block overflow */
|
||||
dst = &(block->data[address - block->base_addr]);
|
||||
src = data;
|
||||
do
|
||||
{
|
||||
/* keep the watchdog happy */
|
||||
CopService();
|
||||
/* buffer overflow? */
|
||||
if ((blt_addr)(dst-&(block->data[0])) >= FLASH_WRITE_BLOCK_SIZE)
|
||||
{
|
||||
/* need to switch to a new block, so program the current one and init the next */
|
||||
block = FlashSwitchBlock(block, current_base_addr+FLASH_WRITE_BLOCK_SIZE);
|
||||
if (block == BLT_NULL)
|
||||
{
|
||||
return BLT_FALSE;
|
||||
}
|
||||
/* reset destination pointer */
|
||||
dst = &(block->data[0]);
|
||||
}
|
||||
/* write the data to the buffer */
|
||||
*dst = *src;
|
||||
/* update pointers */
|
||||
dst++;
|
||||
src++;
|
||||
/* decrement byte counter */
|
||||
len--;
|
||||
}
|
||||
while (len > 0);
|
||||
/* still here so all is good */
|
||||
return BLT_TRUE;
|
||||
} /*** end of FlashAddToBlock ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashWriteBlock
|
||||
** PARAMETER: block pointer to flash block info structure to operate on.
|
||||
** RETURN VALUE: BLT_TRUE if successful, BLT_FALSE otherwise.
|
||||
** DESCRIPTION: Programs FLASH_WRITE_BLOCK_SIZE bytes to flash from the block->data
|
||||
** array.
|
||||
**
|
||||
****************************************************************************************/
|
||||
static blt_bool FlashWriteBlock(tFlashBlockInfo *block)
|
||||
{
|
||||
blt_int8u sector_num;
|
||||
msc_Return_TypeDef result;
|
||||
blt_addr prog_addr;
|
||||
blt_int32u prog_data;
|
||||
blt_int32u word_cnt;
|
||||
|
||||
|
||||
/* check that address is actually within flash */
|
||||
sector_num = FlashGetSector(block->base_addr);
|
||||
if (sector_num == FLASH_INVALID_SECTOR)
|
||||
{
|
||||
return BLT_FALSE;
|
||||
}
|
||||
|
||||
/* program all words in the block one by one */
|
||||
for (word_cnt=0; word_cnt<(FLASH_WRITE_BLOCK_SIZE/sizeof(blt_int32u)); word_cnt++)
|
||||
{
|
||||
prog_addr = block->base_addr + (word_cnt * sizeof(blt_int32u));
|
||||
prog_data = *(volatile blt_int32u*)(&block->data[word_cnt * sizeof(blt_int32u)]);
|
||||
/* keep the watchdog happy */
|
||||
CopService();
|
||||
/* program a word */
|
||||
if (MSC_WriteWord((uint32_t *)prog_addr, &prog_data, sizeof(blt_int32u)) != mscReturnOk)
|
||||
{
|
||||
result = BLT_FALSE;
|
||||
break;
|
||||
}
|
||||
/* verify that the written data is actually there */
|
||||
if (*(volatile blt_int32u*)prog_addr != prog_data)
|
||||
{
|
||||
result = BLT_FALSE;
|
||||
break;
|
||||
}
|
||||
}
|
||||
/* still here so all is okay */
|
||||
return BLT_TRUE;
|
||||
} /*** end of FlashWriteBlock ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashCalcPageSize
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: The flash page size
|
||||
** DESCRIPTION: Determines the flash page size for the specific EFM32 derivative. This
|
||||
** is the minimum erase size.
|
||||
**
|
||||
****************************************************************************************/
|
||||
static blt_int32u FlashCalcPageSize(void)
|
||||
{
|
||||
blt_int8u family = *(blt_int8u*)0x0FE081FE;
|
||||
|
||||
if ( ( family == 71 ) || ( family == 73 ) )
|
||||
{
|
||||
/* Gecko and Tiny, 'G' or 'I' */
|
||||
return 512;
|
||||
}
|
||||
else if ( family == 72 )
|
||||
{
|
||||
/* Giant, 'H' */
|
||||
return 4096;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Leopard, 'J' */
|
||||
return 2048;
|
||||
}
|
||||
} /*** end of FlashCalcPageSize ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashEraseSectors
|
||||
** PARAMETER: first_sector first flash sector number
|
||||
** last_sector last flash sector number
|
||||
** RETURN VALUE: BLT_TRUE if successful, BLT_FALSE otherwise.
|
||||
** DESCRIPTION: Erases the flash sectors from first_sector up until last_sector
|
||||
**
|
||||
****************************************************************************************/
|
||||
static blt_bool FlashEraseSectors(blt_int8u first_sector, blt_int8u last_sector)
|
||||
{
|
||||
blt_int16u nr_of_blocks;
|
||||
blt_int16u block_cnt;
|
||||
blt_addr start_addr;
|
||||
blt_addr end_addr;
|
||||
blt_int32u erase_block_size;
|
||||
|
||||
/* validate the sector numbers */
|
||||
if (first_sector > last_sector)
|
||||
{
|
||||
return BLT_FALSE;
|
||||
}
|
||||
if ( (first_sector < flashLayout[0].sector_num) || \
|
||||
(last_sector > flashLayout[FLASH_TOTAL_SECTORS-1].sector_num) )
|
||||
{
|
||||
return BLT_FALSE;
|
||||
}
|
||||
/* determine the minimum erase size */
|
||||
erase_block_size = FlashCalcPageSize();
|
||||
/* determine how many blocks need to be erased */
|
||||
start_addr = FlashGetSectorBaseAddr(first_sector);
|
||||
end_addr = FlashGetSectorBaseAddr(last_sector) + FlashGetSectorSize(last_sector) - 1;
|
||||
nr_of_blocks = (end_addr - start_addr + 1) / erase_block_size;
|
||||
|
||||
/* erase all blocks one by one */
|
||||
for (block_cnt=0; block_cnt<nr_of_blocks; block_cnt++)
|
||||
{
|
||||
/* keep the watchdog happy */
|
||||
CopService();
|
||||
/* erase the block */
|
||||
if (MSC_ErasePage((uint32_t *)(start_addr + (block_cnt * erase_block_size))) != mscReturnOk)
|
||||
{
|
||||
/* error occurred during the erase operation */
|
||||
return BLT_FALSE;
|
||||
}
|
||||
}
|
||||
/* still here so all went okay */
|
||||
return BLT_TRUE;
|
||||
} /*** end of FlashEraseSectors ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashGetSector
|
||||
** PARAMETER: address address in the flash sector
|
||||
** RETURN VALUE: flash sector number or FLASH_INVALID_SECTOR
|
||||
** DESCRIPTION: Determines the flash sector the address is in.
|
||||
**
|
||||
****************************************************************************************/
|
||||
static blt_int8u FlashGetSector(blt_addr address)
|
||||
{
|
||||
blt_int8u sectorIdx;
|
||||
|
||||
/* search through the sectors to find the right one */
|
||||
for (sectorIdx = 0; sectorIdx < FLASH_TOTAL_SECTORS; sectorIdx++)
|
||||
{
|
||||
/* keep the watchdog happy */
|
||||
CopService();
|
||||
/* is the address in this sector? */
|
||||
if ( (address >= flashLayout[sectorIdx].sector_start) && \
|
||||
(address < (flashLayout[sectorIdx].sector_start + \
|
||||
flashLayout[sectorIdx].sector_size)) )
|
||||
{
|
||||
/* return the sector number */
|
||||
return flashLayout[sectorIdx].sector_num;
|
||||
}
|
||||
}
|
||||
/* still here so no valid sector found */
|
||||
return FLASH_INVALID_SECTOR;
|
||||
} /*** end of FlashGetSector ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashGetSectorBaseAddr
|
||||
** PARAMETER: sector sector to get the base address of.
|
||||
** RETURN VALUE: flash sector base address or FLASH_INVALID_ADDRESS
|
||||
** DESCRIPTION: Determines the flash sector base address.
|
||||
**
|
||||
****************************************************************************************/
|
||||
static blt_addr FlashGetSectorBaseAddr(blt_int8u sector)
|
||||
{
|
||||
blt_int8u sectorIdx;
|
||||
|
||||
/* search through the sectors to find the right one */
|
||||
for (sectorIdx = 0; sectorIdx < FLASH_TOTAL_SECTORS; sectorIdx++)
|
||||
{
|
||||
/* keep the watchdog happy */
|
||||
CopService();
|
||||
if (flashLayout[sectorIdx].sector_num == sector)
|
||||
{
|
||||
return flashLayout[sectorIdx].sector_start;
|
||||
}
|
||||
}
|
||||
/* still here so no valid sector found */
|
||||
return FLASH_INVALID_ADDRESS;
|
||||
} /*** end of FlashGetSectorBaseAddr ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: FlashGetSectorSize
|
||||
** PARAMETER: sector sector to get the size of.
|
||||
** RETURN VALUE: flash sector size or 0
|
||||
** DESCRIPTION: Determines the flash sector size.
|
||||
**
|
||||
****************************************************************************************/
|
||||
static blt_addr FlashGetSectorSize(blt_int8u sector)
|
||||
{
|
||||
blt_int8u sectorIdx;
|
||||
|
||||
/* search through the sectors to find the right one */
|
||||
for (sectorIdx = 0; sectorIdx < FLASH_TOTAL_SECTORS; sectorIdx++)
|
||||
{
|
||||
/* keep the watchdog happy */
|
||||
CopService();
|
||||
if (flashLayout[sectorIdx].sector_num == sector)
|
||||
{
|
||||
return flashLayout[sectorIdx].sector_size;
|
||||
}
|
||||
}
|
||||
/* still here so no valid sector found */
|
||||
return 0;
|
||||
} /*** end of FlashGetSectorSize ***/
|
||||
|
||||
|
||||
/*********************************** end of flash.c ************************************/
|
||||
|
|
@ -0,0 +1,46 @@
|
|||
/****************************************************************************************
|
||||
| Description: bootloader flash driver header file
|
||||
| File Name: flash.h
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| C O P Y R I G H T
|
||||
|----------------------------------------------------------------------------------------
|
||||
| Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| L I C E N S E
|
||||
|----------------------------------------------------------------------------------------
|
||||
| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
||||
| modify it under the terms of the GNU General Public License as published by the Free
|
||||
| Software Foundation, either version 3 of the License, or (at your option) any later
|
||||
| version.
|
||||
|
|
||||
| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||||
| PURPOSE. See the GNU General Public License for more details.
|
||||
|
|
||||
| You should have received a copy of the GNU General Public License along with OpenBLT.
|
||||
| If not, see <http://www.gnu.org/licenses/>.
|
||||
|
|
||||
| A special exception to the GPL is included to allow you to distribute a combined work
|
||||
| that includes OpenBLT without being obliged to provide the source code for any
|
||||
| proprietary components. The exception text is included at the bottom of the license
|
||||
| file <license.html>.
|
||||
|
|
||||
****************************************************************************************/
|
||||
#ifndef FLASH_H
|
||||
#define FLASH_H
|
||||
|
||||
/****************************************************************************************
|
||||
* Function prototypes
|
||||
****************************************************************************************/
|
||||
void FlashInit(void);
|
||||
blt_bool FlashWrite(blt_addr addr, blt_int32u len, blt_int8u *data);
|
||||
blt_bool FlashErase(blt_addr addr, blt_int32u len);
|
||||
blt_bool FlashWriteChecksum(void);
|
||||
blt_bool FlashVerifyChecksum(void);
|
||||
blt_bool FlashDone(void);
|
||||
|
||||
|
||||
#endif /* FLASH_H */
|
||||
/*********************************** end of flash.h ************************************/
|
||||
|
|
@ -0,0 +1,201 @@
|
|||
/****************************************************************************************
|
||||
| Description: bootloader non-volatile memory driver source file
|
||||
| File Name: nvm.c
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| C O P Y R I G H T
|
||||
|----------------------------------------------------------------------------------------
|
||||
| Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| L I C E N S E
|
||||
|----------------------------------------------------------------------------------------
|
||||
| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
||||
| modify it under the terms of the GNU General Public License as published by the Free
|
||||
| Software Foundation, either version 3 of the License, or (at your option) any later
|
||||
| version.
|
||||
|
|
||||
| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||||
| PURPOSE. See the GNU General Public License for more details.
|
||||
|
|
||||
| You should have received a copy of the GNU General Public License along with OpenBLT.
|
||||
| If not, see <http://www.gnu.org/licenses/>.
|
||||
|
|
||||
| A special exception to the GPL is included to allow you to distribute a combined work
|
||||
| that includes OpenBLT without being obliged to provide the source code for any
|
||||
| proprietary components. The exception text is included at the bottom of the license
|
||||
| file <license.html>.
|
||||
|
|
||||
****************************************************************************************/
|
||||
|
||||
/****************************************************************************************
|
||||
* Include files
|
||||
****************************************************************************************/
|
||||
#include "boot.h" /* bootloader generic header */
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Hook functions
|
||||
****************************************************************************************/
|
||||
#if (BOOT_NVM_HOOKS_ENABLE > 0)
|
||||
extern void NvmInitHook(void);
|
||||
extern blt_int8u NvmWriteHook(blt_addr addr, blt_int32u len, blt_int8u *data);
|
||||
extern blt_int8u NvmEraseHook(blt_addr addr, blt_int32u len);
|
||||
extern blt_bool NvmDoneHook(void);
|
||||
#endif
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: NvmInit
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: none
|
||||
** DESCRIPTION: Initializes the NVM driver.
|
||||
**
|
||||
****************************************************************************************/
|
||||
void NvmInit(void)
|
||||
{
|
||||
#if (BOOT_NVM_HOOKS_ENABLE > 0)
|
||||
/* give the application a chance to initialize a driver for operating on NVM
|
||||
* that is not by default supported by this driver.
|
||||
*/
|
||||
NvmInitHook();
|
||||
#endif
|
||||
|
||||
/* init the internal driver */
|
||||
FlashInit();
|
||||
} /*** end of NvmInit ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: NvmWrite
|
||||
** PARAMETER: addr start address
|
||||
** len length in bytes
|
||||
** data pointer to the data buffer.
|
||||
** RETURN VALUE: BLT_TRUE if successful, BLT_FALSE otherwise.
|
||||
** DESCRIPTION: Programs the non-volatile memory.
|
||||
**
|
||||
****************************************************************************************/
|
||||
blt_bool NvmWrite(blt_addr addr, blt_int32u len, blt_int8u *data)
|
||||
{
|
||||
#if (BOOT_NVM_HOOKS_ENABLE > 0)
|
||||
blt_int8u result = BLT_NVM_NOT_IN_RANGE;
|
||||
#endif
|
||||
|
||||
#if (BOOT_NVM_HOOKS_ENABLE > 0)
|
||||
/* give the application a chance to operate on memory that is not by default supported
|
||||
* by this driver.
|
||||
*/
|
||||
result = NvmWriteHook(addr, len, data);
|
||||
|
||||
/* process the return code */
|
||||
if (result == BLT_NVM_OKAY)
|
||||
{
|
||||
/* data was within range of the additionally supported memory and succesfully
|
||||
* programmed, so we are all done.
|
||||
*/
|
||||
return BLT_TRUE;
|
||||
}
|
||||
else if (result == BLT_NVM_ERROR)
|
||||
{
|
||||
/* data was within range of the additionally supported memory and attempted to be
|
||||
* programmed, but an error occurred, so we can't continue.
|
||||
*/
|
||||
return BLT_FALSE;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* still here so the internal driver should try and perform the program operation */
|
||||
return FlashWrite(addr, len, data);
|
||||
} /*** end of NvmWrite ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: NvmErase
|
||||
** PARAMETER: addr start address
|
||||
** len length in bytes
|
||||
** RETURN VALUE: BLT_TRUE if successful, BLT_FALSE otherwise.
|
||||
** DESCRIPTION: Erases the non-volatile memory.
|
||||
**
|
||||
****************************************************************************************/
|
||||
blt_bool NvmErase(blt_addr addr, blt_int32u len)
|
||||
{
|
||||
#if (BOOT_NVM_HOOKS_ENABLE > 0)
|
||||
blt_int8u result = BLT_NVM_NOT_IN_RANGE;
|
||||
#endif
|
||||
|
||||
#if (BOOT_NVM_HOOKS_ENABLE > 0)
|
||||
/* give the application a chance to operate on memory that is not by default supported
|
||||
* by this driver.
|
||||
*/
|
||||
result = NvmEraseHook(addr, len);
|
||||
|
||||
/* process the return code */
|
||||
if (result == BLT_NVM_OKAY)
|
||||
{
|
||||
/* address was within range of the additionally supported memory and succesfully
|
||||
* erased, so we are all done.
|
||||
*/
|
||||
return BLT_TRUE;
|
||||
}
|
||||
else if (result == BLT_NVM_ERROR)
|
||||
{
|
||||
/* address was within range of the additionally supported memory and attempted to be
|
||||
* erased, but an error occurred, so we can't continue.
|
||||
*/
|
||||
return BLT_FALSE;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* still here so the internal driver should try and perform the erase operation */
|
||||
return FlashErase(addr, len);
|
||||
} /*** end of NvmErase ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: NvmVerifyChecksum
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: BLT_TRUE is successful, BTL_FALSE otherwise.
|
||||
** DESCRIPTION: Verifies the checksum, which indicates that a valid user program is
|
||||
** present and can be started.
|
||||
**
|
||||
****************************************************************************************/
|
||||
blt_bool NvmVerifyChecksum(void)
|
||||
{
|
||||
/* check checksum */
|
||||
return FlashVerifyChecksum();
|
||||
} /*** end of NvmVerifyChecksum ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: NvmDone
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: BLT_TRUE is successful, BLT_FALSE otherwise.
|
||||
** DESCRIPTION: Once all erase and programming operations are completed, this
|
||||
** function is called, so at the end of the programming session and
|
||||
** right before a software reset is performed. It is used to calculate
|
||||
** a checksum and program this into flash. This checksum is later used
|
||||
** to determine if a valid user program is present in flash.
|
||||
**
|
||||
****************************************************************************************/
|
||||
blt_bool NvmDone(void)
|
||||
{
|
||||
#if (BOOT_NVM_HOOKS_ENABLE > 0)
|
||||
/* give the application's NVM driver a chance to finish up */
|
||||
if (NvmDoneHook() == BLT_FALSE)
|
||||
{
|
||||
/* error so no need to continue */
|
||||
return BLT_FALSE;
|
||||
}
|
||||
#endif
|
||||
/* compute and write checksum, which is programmed by the internal driver */
|
||||
if (FlashWriteChecksum() == BLT_FALSE)
|
||||
{
|
||||
return BLT_FALSE;
|
||||
}
|
||||
/* finish up internal driver operations */
|
||||
return FlashDone();
|
||||
} /*** end of NvmDone ***/
|
||||
|
||||
|
||||
/*********************************** end of nvm.c **************************************/
|
||||
|
|
@ -0,0 +1,60 @@
|
|||
/****************************************************************************************
|
||||
| Description: bootloader non-volatile memory driver header file
|
||||
| File Name: nvm.h
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| C O P Y R I G H T
|
||||
|----------------------------------------------------------------------------------------
|
||||
| Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| L I C E N S E
|
||||
|----------------------------------------------------------------------------------------
|
||||
| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
||||
| modify it under the terms of the GNU General Public License as published by the Free
|
||||
| Software Foundation, either version 3 of the License, or (at your option) any later
|
||||
| version.
|
||||
|
|
||||
| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||||
| PURPOSE. See the GNU General Public License for more details.
|
||||
|
|
||||
| You should have received a copy of the GNU General Public License along with OpenBLT.
|
||||
| If not, see <http://www.gnu.org/licenses/>.
|
||||
|
|
||||
| A special exception to the GPL is included to allow you to distribute a combined work
|
||||
| that includes OpenBLT without being obliged to provide the source code for any
|
||||
| proprietary components. The exception text is included at the bottom of the license
|
||||
| file <license.html>.
|
||||
|
|
||||
****************************************************************************************/
|
||||
#ifndef NVM_H
|
||||
#define NVM_H
|
||||
|
||||
/****************************************************************************************
|
||||
* Include files
|
||||
****************************************************************************************/
|
||||
#include "flash.h" /* LPC2xxx flash driver */
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Function prototypes
|
||||
****************************************************************************************/
|
||||
void NvmInit(void);
|
||||
blt_bool NvmWrite(blt_addr addr, blt_int32u len, blt_int8u *data);
|
||||
blt_bool NvmErase(blt_addr addr, blt_int32u len);
|
||||
blt_bool NvmVerifyChecksum(void);
|
||||
blt_bool NvmDone(void);
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Macro definitions
|
||||
****************************************************************************************/
|
||||
/* return codes for hook function NvmWrite/Erase */
|
||||
#define BLT_NVM_ERROR (0x00) /* return code for success */
|
||||
#define BLT_NVM_OKAY (0x01) /* return code for error */
|
||||
#define BLT_NVM_NOT_IN_RANGE (0x02) /* return code for not in range */
|
||||
|
||||
|
||||
#endif /* NVM_H */
|
||||
/*********************************** end of nvm.h **************************************/
|
||||
|
|
@ -0,0 +1,156 @@
|
|||
/****************************************************************************************
|
||||
| Description: bootloader timer driver source file
|
||||
| File Name: timer.c
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| C O P Y R I G H T
|
||||
|----------------------------------------------------------------------------------------
|
||||
| Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| L I C E N S E
|
||||
|----------------------------------------------------------------------------------------
|
||||
| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
||||
| modify it under the terms of the GNU General Public License as published by the Free
|
||||
| Software Foundation, either version 3 of the License, or (at your option) any later
|
||||
| version.
|
||||
|
|
||||
| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||||
| PURPOSE. See the GNU General Public License for more details.
|
||||
|
|
||||
| You should have received a copy of the GNU General Public License along with OpenBLT.
|
||||
| If not, see <http://www.gnu.org/licenses/>.
|
||||
|
|
||||
| A special exception to the GPL is included to allow you to distribute a combined work
|
||||
| that includes OpenBLT without being obliged to provide the source code for any
|
||||
| proprietary components. The exception text is included at the bottom of the license
|
||||
| file <license.html>.
|
||||
|
|
||||
****************************************************************************************/
|
||||
|
||||
/****************************************************************************************
|
||||
* Include files
|
||||
****************************************************************************************/
|
||||
#include "boot.h" /* bootloader generic header */
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Type definitions
|
||||
****************************************************************************************/
|
||||
typedef struct
|
||||
{
|
||||
volatile blt_int32u CTRL; /* SysTick Control and Status Register */
|
||||
volatile blt_int32u LOAD; /* SysTick Reload Value Register */
|
||||
volatile blt_int32u VAL; /* SysTick Current Value Register */
|
||||
} tSysTickRegs;
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Macro definitions
|
||||
****************************************************************************************/
|
||||
#define SYSTICK_BIT_CLKSOURCE ((blt_int32u)0x00000004)
|
||||
#define SYSTICK_BIT_ENABLE ((blt_int32u)0x00000001)
|
||||
#define SYSTICK_BIT_COUNTERFLAG ((blt_int32u)0x00010000)
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Local data declarations
|
||||
****************************************************************************************/
|
||||
static blt_int16u millisecond_counter;
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Register definitions
|
||||
****************************************************************************************/
|
||||
#define SYSTICK ((tSysTickRegs *) (blt_int32u)0xE000E010)
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: TimerInit
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: none
|
||||
** DESCRIPTION: Initializes the polling based millisecond timer driver.
|
||||
**
|
||||
****************************************************************************************/
|
||||
void TimerInit(void)
|
||||
{
|
||||
/* reset the timer configuration */
|
||||
TimerReset();
|
||||
/* configure the systick frequency as a 1 ms event generator */
|
||||
SYSTICK->LOAD = BOOT_CPU_SYSTEM_SPEED_KHZ - 1;
|
||||
/* reset the current counter value */
|
||||
SYSTICK->VAL = 0;
|
||||
/* select core clock as source and enable the timer */
|
||||
SYSTICK->CTRL = SYSTICK_BIT_CLKSOURCE | SYSTICK_BIT_ENABLE;
|
||||
/* reset the millisecond counter value */
|
||||
TimerSet(0);
|
||||
} /*** end of TimerInit ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: TimerReset
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: none
|
||||
** DESCRIPTION: Reset the timer by placing the timer back into it's default reset
|
||||
** configuration.
|
||||
**
|
||||
****************************************************************************************/
|
||||
void TimerReset(void)
|
||||
{
|
||||
/* set the systick's status and control register back into the default reset value */
|
||||
SYSTICK->CTRL = 0;
|
||||
} /* end of TimerReset */
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: TimerUpdate
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: none
|
||||
** DESCRIPTION: Updates the millisecond timer.
|
||||
**
|
||||
****************************************************************************************/
|
||||
void TimerUpdate(void)
|
||||
{
|
||||
/* check if the milliseond event occurred */
|
||||
if ((SYSTICK->CTRL & SYSTICK_BIT_COUNTERFLAG) != 0)
|
||||
{
|
||||
/* increment the millisecond counter */
|
||||
millisecond_counter++;
|
||||
}
|
||||
} /*** end of TimerUpdate ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: TimerSet
|
||||
** PARAMETER: timer_value initialize value of the millisecond timer.
|
||||
** RETURN VALUE: none
|
||||
** DESCRIPTION: Sets the initial counter value of the millisecond timer.
|
||||
**
|
||||
****************************************************************************************/
|
||||
void TimerSet(blt_int32u timer_value)
|
||||
{
|
||||
/* set the millisecond counter value */
|
||||
millisecond_counter = timer_value;
|
||||
} /*** end of TimerSet ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: TimerGet
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: current value of the millisecond timer
|
||||
** DESCRIPTION: Obtains the counter value of the millisecond timer.
|
||||
**
|
||||
****************************************************************************************/
|
||||
blt_int32u TimerGet(void)
|
||||
{
|
||||
/* updating timer here allows this function to be called in a loop with timeout
|
||||
* detection.
|
||||
*/
|
||||
TimerUpdate();
|
||||
/* read and return the amount of milliseconds that passed since initialization */
|
||||
return millisecond_counter;
|
||||
} /*** end of TimerGet ***/
|
||||
|
||||
|
||||
/*********************************** end of timer.c ************************************/
|
||||
|
|
@ -0,0 +1,45 @@
|
|||
/****************************************************************************************
|
||||
| Description: bootloader timer driver header file
|
||||
| File Name: timer.h
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| C O P Y R I G H T
|
||||
|----------------------------------------------------------------------------------------
|
||||
| Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| L I C E N S E
|
||||
|----------------------------------------------------------------------------------------
|
||||
| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
||||
| modify it under the terms of the GNU General Public License as published by the Free
|
||||
| Software Foundation, either version 3 of the License, or (at your option) any later
|
||||
| version.
|
||||
|
|
||||
| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||||
| PURPOSE. See the GNU General Public License for more details.
|
||||
|
|
||||
| You should have received a copy of the GNU General Public License along with OpenBLT.
|
||||
| If not, see <http://www.gnu.org/licenses/>.
|
||||
|
|
||||
| A special exception to the GPL is included to allow you to distribute a combined work
|
||||
| that includes OpenBLT without being obliged to provide the source code for any
|
||||
| proprietary components. The exception text is included at the bottom of the license
|
||||
| file <license.html>.
|
||||
|
|
||||
****************************************************************************************/
|
||||
#ifndef TIMER_H
|
||||
#define TIMER_H
|
||||
|
||||
/****************************************************************************************
|
||||
* Function prototypes
|
||||
****************************************************************************************/
|
||||
void TimerInit(void);
|
||||
void TimerUpdate(void);
|
||||
void TimerSet(blt_int32u timer_value);
|
||||
blt_int32u TimerGet(void);
|
||||
void TimerReset(void);
|
||||
|
||||
|
||||
#endif /* TIMER_H */
|
||||
/*********************************** end of timer.h ************************************/
|
||||
|
|
@ -0,0 +1,58 @@
|
|||
/****************************************************************************************
|
||||
| Description: bootloader types header file
|
||||
| File Name: types.h
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| C O P Y R I G H T
|
||||
|----------------------------------------------------------------------------------------
|
||||
| Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| L I C E N S E
|
||||
|----------------------------------------------------------------------------------------
|
||||
| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
||||
| modify it under the terms of the GNU General Public License as published by the Free
|
||||
| Software Foundation, either version 3 of the License, or (at your option) any later
|
||||
| version.
|
||||
|
|
||||
| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||||
| PURPOSE. See the GNU General Public License for more details.
|
||||
|
|
||||
| You should have received a copy of the GNU General Public License along with OpenBLT.
|
||||
| If not, see <http://www.gnu.org/licenses/>.
|
||||
|
|
||||
| A special exception to the GPL is included to allow you to distribute a combined work
|
||||
| that includes OpenBLT without being obliged to provide the source code for any
|
||||
| proprietary components. The exception text is included at the bottom of the license
|
||||
| file <license.html>.
|
||||
|
|
||||
****************************************************************************************/
|
||||
#ifndef TYPES_H
|
||||
#define TYPES_H
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Macro definitions
|
||||
****************************************************************************************/
|
||||
#define BLT_TRUE (1)
|
||||
#define BLT_FALSE (0)
|
||||
#define BLT_NULL ((void *)0)
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
* Type definitions
|
||||
****************************************************************************************/
|
||||
typedef unsigned char blt_bool; /* boolean type */
|
||||
typedef char blt_char; /* character type */
|
||||
typedef unsigned long blt_addr; /* memory address type */
|
||||
typedef unsigned char blt_int8u; /* 8-bit unsigned integer */
|
||||
typedef signed char blt_int8s; /* 8-bit signed integer */
|
||||
typedef unsigned short blt_int16u; /* 16-bit unsigned integer */
|
||||
typedef signed short blt_int16s; /* 16-bit signed integer */
|
||||
typedef unsigned int blt_int32u; /* 32-bit unsigned integer */
|
||||
typedef signed int blt_int32s; /* 32-bit signed integer */
|
||||
|
||||
|
||||
#endif /* TYPES_H */
|
||||
/*********************************** end of types.h ************************************/
|
||||
|
|
@ -0,0 +1,224 @@
|
|||
/****************************************************************************************
|
||||
| Description: bootloader UART communication interface source file
|
||||
| File Name: uart.c
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| C O P Y R I G H T
|
||||
|----------------------------------------------------------------------------------------
|
||||
| Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| L I C E N S E
|
||||
|----------------------------------------------------------------------------------------
|
||||
| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
||||
| modify it under the terms of the GNU General Public License as published by the Free
|
||||
| Software Foundation, either version 3 of the License, or (at your option) any later
|
||||
| version.
|
||||
|
|
||||
| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||||
| PURPOSE. See the GNU General Public License for more details.
|
||||
|
|
||||
| You should have received a copy of the GNU General Public License along with OpenBLT.
|
||||
| If not, see <http://www.gnu.org/licenses/>.
|
||||
|
|
||||
| A special exception to the GPL is included to allow you to distribute a combined work
|
||||
| that includes OpenBLT without being obliged to provide the source code for any
|
||||
| proprietary components. The exception text is included at the bottom of the license
|
||||
| file <license.html>.
|
||||
|
|
||||
****************************************************************************************/
|
||||
|
||||
/****************************************************************************************
|
||||
* Include files
|
||||
****************************************************************************************/
|
||||
#include "boot.h" /* bootloader generic header */
|
||||
#include "efm32.h"
|
||||
#include "efm32_cmu.h"
|
||||
#include "efm32_gpio.h"
|
||||
#include "efm32_leuart.h"
|
||||
|
||||
|
||||
#if (BOOT_COM_UART_ENABLE > 0)
|
||||
/****************************************************************************************
|
||||
* Function prototypes
|
||||
****************************************************************************************/
|
||||
static blt_bool UartReceiveByte(blt_int8u *data);
|
||||
static blt_bool UartTransmitByte(blt_int8u data);
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: UartInit
|
||||
** PARAMETER: none
|
||||
** RETURN VALUE: none
|
||||
** DESCRIPTION: Initializes the UART communication interface
|
||||
**
|
||||
****************************************************************************************/
|
||||
void UartInit(void)
|
||||
{
|
||||
LEUART_Init_TypeDef init = LEUART_INIT_DEFAULT;
|
||||
|
||||
/* currently, only LEUART1 is supported */
|
||||
ASSERT_CT(BOOT_COM_UART_CHANNEL_INDEX == 1);
|
||||
/* max baudrate for LEUART is 9600 bps */
|
||||
ASSERT_CT(BOOT_COM_UART_BAUDRATE <= 9600);
|
||||
/* configure GPIO pins */
|
||||
CMU_ClockEnable(cmuClock_GPIO, true);
|
||||
/* to avoid false start, configure output as high */
|
||||
GPIO_PinModeSet(gpioPortC, 6, gpioModePushPull, 1);
|
||||
GPIO_PinModeSet(gpioPortC, 7, gpioModeInput, 0);
|
||||
/* enable CORE LE clock in order to access LE modules */
|
||||
CMU_ClockEnable(cmuClock_CORELE, true);
|
||||
/* select LFXO for LEUARTs (and wait for it to stabilize) */
|
||||
CMU_ClockSelectSet(cmuClock_LFB, cmuSelect_LFXO);
|
||||
/* do not prescale clock */
|
||||
CMU_ClockDivSet(cmuClock_LEUART1, cmuClkDiv_1);
|
||||
/* enable LEUART1 clock */
|
||||
CMU_ClockEnable(cmuClock_LEUART1, true);
|
||||
/* configure LEUART */
|
||||
init.enable = leuartDisable;
|
||||
LEUART_Init(LEUART1, &init);
|
||||
LEUART_BaudrateSet(LEUART1, 0, BOOT_COM_UART_BAUDRATE);
|
||||
/* enable pins at default location */
|
||||
LEUART1->ROUTE = LEUART_ROUTE_RXPEN | LEUART_ROUTE_TXPEN;
|
||||
/* clear previous RX interrupts */
|
||||
LEUART_IntClear(LEUART1, LEUART_IF_RXDATAV);
|
||||
/* finally enable it */
|
||||
LEUART_Enable(LEUART1, leuartEnable);
|
||||
} /*** end of UartInit ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: UartTransmitPacket
|
||||
** PARAMETER: data pointer to byte array with data that it to be transmitted.
|
||||
** len number of bytes that are to be transmitted.
|
||||
** RETURN VALUE: none
|
||||
** DESCRIPTION: Transmits a packet formatted for the communication interface.
|
||||
**
|
||||
****************************************************************************************/
|
||||
void UartTransmitPacket(blt_int8u *data, blt_int8u len)
|
||||
{
|
||||
blt_int16u data_index;
|
||||
|
||||
/* verify validity of the len-paramenter */
|
||||
ASSERT_RT(len <= BOOT_COM_TX_MAX_DATA);
|
||||
|
||||
/* first transmit the length of the packet */
|
||||
ASSERT_RT(UartTransmitByte(len) == BLT_TRUE);
|
||||
|
||||
/* transmit all the packet bytes one-by-one */
|
||||
for (data_index = 0; data_index < len; data_index++)
|
||||
{
|
||||
/* keep the watchdog happy */
|
||||
CopService();
|
||||
/* write byte */
|
||||
ASSERT_RT(UartTransmitByte(data[data_index]) == BLT_TRUE);
|
||||
}
|
||||
} /*** end of UartTransmitPacket ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: UartReceivePacket
|
||||
** PARAMETER: data pointer to byte array where the data is to be stored.
|
||||
** RETURN VALUE: BLT_TRUE if a packet was received, BLT_FALSE otherwise.
|
||||
** DESCRIPTION: Receives a communication interface packet if one is present.
|
||||
**
|
||||
****************************************************************************************/
|
||||
blt_bool UartReceivePacket(blt_int8u *data)
|
||||
{
|
||||
static blt_int8u xcpCtoReqPacket[XCP_CTO_PACKET_LEN+1]; /* one extra for length */
|
||||
static blt_int8u xcpCtoRxLength;
|
||||
static blt_bool xcpCtoRxInProgress = BLT_FALSE;
|
||||
|
||||
/* start of cto packet received? */
|
||||
if (xcpCtoRxInProgress == BLT_FALSE)
|
||||
{
|
||||
/* store the message length when received */
|
||||
if (UartReceiveByte(&xcpCtoReqPacket[0]) == BLT_TRUE)
|
||||
{
|
||||
/* indicate that a cto packet is being received */
|
||||
xcpCtoRxInProgress = BLT_TRUE;
|
||||
|
||||
/* reset packet data count */
|
||||
xcpCtoRxLength = 0;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* store the next packet byte */
|
||||
if (UartReceiveByte(&xcpCtoReqPacket[xcpCtoRxLength+1]) == BLT_TRUE)
|
||||
{
|
||||
/* increment the packet data count */
|
||||
xcpCtoRxLength++;
|
||||
|
||||
/* check to see if the entire packet was received */
|
||||
if (xcpCtoRxLength == xcpCtoReqPacket[0])
|
||||
{
|
||||
/* copy the packet data */
|
||||
CpuMemCopy((blt_int32u)data, (blt_int32u)&xcpCtoReqPacket[1], xcpCtoRxLength);
|
||||
/* done with cto packet reception */
|
||||
xcpCtoRxInProgress = BLT_FALSE;
|
||||
|
||||
/* packet reception complete */
|
||||
return BLT_TRUE;
|
||||
}
|
||||
}
|
||||
}
|
||||
/* packet reception not yet complete */
|
||||
return BLT_FALSE;
|
||||
} /*** end of UartReceivePacket ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: UartReceiveByte
|
||||
** PARAMETER: data pointer to byte where the data is to be stored.
|
||||
** RETURN VALUE: BLT_TRUE if a byte was received, BLT_FALSE otherwise.
|
||||
** DESCRIPTION: Receives a communication interface byte if one is present.
|
||||
**
|
||||
****************************************************************************************/
|
||||
static blt_bool UartReceiveByte(blt_int8u *data)
|
||||
{
|
||||
blt_bool result = BLT_FALSE;
|
||||
|
||||
/* check to see if a new bytes was received */
|
||||
if ((LEUART1->IF & LEUART_IF_RXDATAV) != 0)
|
||||
{
|
||||
/* store the received data byte and set return value to positive */
|
||||
*data = LEUART_Rx(LEUART1);
|
||||
result = BLT_TRUE;
|
||||
}
|
||||
/* inform caller about the result */
|
||||
return result;
|
||||
} /*** end of UartReceiveByte ***/
|
||||
|
||||
|
||||
/****************************************************************************************
|
||||
** NAME: UartTransmitByte
|
||||
** PARAMETER: data value of byte that is to be transmitted.
|
||||
** RETURN VALUE: BLT_TRUE if the byte was transmitted, BLT_FALSE otherwise.
|
||||
** DESCRIPTION: Transmits a communication interface byte.
|
||||
**
|
||||
****************************************************************************************/
|
||||
static blt_bool UartTransmitByte(blt_int8u data)
|
||||
{
|
||||
/* check if tx holding register can accept new data */
|
||||
if ((LEUART1->STATUS & LEUART_STATUS_TXBL) == 0)
|
||||
{
|
||||
/* UART not ready. should not happen */
|
||||
return BLT_FALSE;
|
||||
}
|
||||
/* write byte to transmit holding register */
|
||||
LEUART_Tx(LEUART1, data);
|
||||
/* wait for tx holding register to be empty */
|
||||
while((LEUART1->STATUS & LEUART_STATUS_TXBL) == 0)
|
||||
{
|
||||
/* keep the watchdog happy */
|
||||
CopService();
|
||||
}
|
||||
/* byte transmitted */
|
||||
return BLT_TRUE;
|
||||
} /*** end of UartTransmitByte ***/
|
||||
#endif /* BOOT_COM_UART_ENABLE > 0 */
|
||||
|
||||
|
||||
/*********************************** end of uart.c *************************************/
|
||||
|
|
@ -0,0 +1,45 @@
|
|||
/****************************************************************************************
|
||||
| Description: bootloader UART communication interface header file
|
||||
| File Name: uart.h
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| C O P Y R I G H T
|
||||
|----------------------------------------------------------------------------------------
|
||||
| Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
|
||||
|
|
||||
|----------------------------------------------------------------------------------------
|
||||
| L I C E N S E
|
||||
|----------------------------------------------------------------------------------------
|
||||
| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
|
||||
| modify it under the terms of the GNU General Public License as published by the Free
|
||||
| Software Foundation, either version 3 of the License, or (at your option) any later
|
||||
| version.
|
||||
|
|
||||
| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
||||
| PURPOSE. See the GNU General Public License for more details.
|
||||
|
|
||||
| You should have received a copy of the GNU General Public License along with OpenBLT.
|
||||
| If not, see <http://www.gnu.org/licenses/>.
|
||||
|
|
||||
| A special exception to the GPL is included to allow you to distribute a combined work
|
||||
| that includes OpenBLT without being obliged to provide the source code for any
|
||||
| proprietary components. The exception text is included at the bottom of the license
|
||||
| file <license.html>.
|
||||
|
|
||||
****************************************************************************************/
|
||||
#ifndef UART_H
|
||||
#define UART_H
|
||||
|
||||
#if (BOOT_COM_UART_ENABLE > 0)
|
||||
/****************************************************************************************
|
||||
* Function prototypes
|
||||
****************************************************************************************/
|
||||
void UartInit(void);
|
||||
void UartTransmitPacket(blt_int8u *data, blt_int8u len);
|
||||
blt_bool UartReceivePacket(blt_int8u *data);
|
||||
#endif /* BOOT_COM_UART_ENABLE > 0 */
|
||||
|
||||
|
||||
#endif /* UART_H */
|
||||
/*********************************** end of uart.h *************************************/
|
||||
Loading…
Reference in New Issue