110 lines
3.5 KiB
C++
110 lines
3.5 KiB
C++
#include "pch.h"
|
|
|
|
extern "C" {
|
|
#include "boot.h"
|
|
#include "flash.h"
|
|
}
|
|
|
|
void CpuInit() { }
|
|
void CopInit() { }
|
|
|
|
void TimerInit() { }
|
|
void TimerReset() { }
|
|
|
|
void CopService() { }
|
|
void TimerUpdate() { }
|
|
|
|
extern "C" void __core_init() {
|
|
// *** this is about specifically stm32f7 ***
|
|
// This overrides the built-in __core_init() function
|
|
// We do this to avoid enabling the D/I caches, which
|
|
// we'll immediately have to turn back off when jumping
|
|
// to the main firmware (which will then enable them itself)
|
|
}
|
|
|
|
blt_int32u TimerGet() {
|
|
return 0;
|
|
}
|
|
|
|
void CpuMemCopy(blt_addr dest, blt_addr src, blt_int16u len)
|
|
{
|
|
memcpy((void*)dest, (void*)src, len);
|
|
}
|
|
|
|
void CpuMemSet(blt_addr dest, blt_int8u value, blt_int16u len)
|
|
{
|
|
memset((void*)dest, value, len);
|
|
}
|
|
|
|
/** \brief Pointer to the user program's reset vector. */
|
|
#define CPU_USER_PROGRAM_STARTADDR_PTR ((blt_addr)(NvmGetUserProgBaseAddress() + 0x00000004))
|
|
/** \brief Pointer to the user program's vector table. */
|
|
#define CPU_USER_PROGRAM_VECTABLE_OFFSET ((blt_int32u)NvmGetUserProgBaseAddress())
|
|
|
|
void CpuStartUserProgram(void)
|
|
{
|
|
void (*pProgResetHandler)(void);
|
|
|
|
/* check if a user program is present by verifying the checksum */
|
|
if (NvmVerifyChecksum() == BLT_FALSE)
|
|
{
|
|
#if (BOOT_COM_DEFERRED_INIT_ENABLE > 0) && (BOOT_COM_ENABLE > 0)
|
|
/* bootloader will stay active so perform deferred initialization to make sure
|
|
* the communication interface that were not yet initialized are now initialized.
|
|
* this is needed to make sure firmware updates via these communication interfaces
|
|
* will be possible.
|
|
*/
|
|
ComDeferredInit();
|
|
#endif
|
|
/* not a valid user program so it cannot be started */
|
|
return;
|
|
}
|
|
#if (BOOT_CPU_USER_PROGRAM_START_HOOK > 0)
|
|
/* invoke callback */
|
|
if (CpuUserProgramStartHook() == BLT_FALSE)
|
|
{
|
|
#if (BOOT_COM_DEFERRED_INIT_ENABLE > 0) && (BOOT_COM_ENABLE > 0)
|
|
/* bootloader will stay active so perform deferred initialization to make sure
|
|
* the communication interface that were not yet initialized are now initialized.
|
|
* this is needed to make sure firmware updates via these communication interfaces
|
|
* will be possible.
|
|
*/
|
|
ComDeferredInit();
|
|
#endif
|
|
/* callback requests the user program to not be started */
|
|
return;
|
|
}
|
|
#endif
|
|
#if (BOOT_COM_ENABLE > 0)
|
|
/* release the communication interface */
|
|
ComFree();
|
|
#endif
|
|
/* reset the HAL */
|
|
chSysDisable();
|
|
/* reset the timer */
|
|
TimerReset();
|
|
/* 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));
|
|
/* The Cortex-M4 core has interrupts enabled out of reset. the bootloader
|
|
* explicitly disables these for security reasons. Enable them here again, so it does
|
|
* not have to be done by the user program.
|
|
*/
|
|
/* start the user program by activating its reset interrupt service routine */
|
|
pProgResetHandler();
|
|
#if (BOOT_COM_DEFERRED_INIT_ENABLE > 0) && (BOOT_COM_ENABLE > 0)
|
|
/* theoretically, the code never gets here because the user program should now be
|
|
* running and the previous function call should not return. In case it did return
|
|
* for whatever reason, make sure all communication interfaces are initialized so that
|
|
* firmware updates can be started.
|
|
*/
|
|
ComDeferredInit();
|
|
#endif
|
|
} /*** end of CpuStartUserProgram ***/
|
|
|
|
|