From 44f0df51f70021574355d9a64001e82e4556b949 Mon Sep 17 00:00:00 2001
From: rusefi <rusefillc@gmail.com>
Date: Fri, 2 Jun 2017 12:33:45 -0400
Subject: [PATCH] bootloader

---
 firmware/Makefile                          | 10 ++++
 firmware/bootloader/compile_bootloader.bat | 20 ++++++++
 firmware/bootloader/src/dfu.h              | 55 ++++++++++++++++++++++
 3 files changed, 85 insertions(+)
 create mode 100644 firmware/bootloader/compile_bootloader.bat
 create mode 100644 firmware/bootloader/src/dfu.h

diff --git a/firmware/Makefile b/firmware/Makefile
index 5b220d9ad7..7785798352 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -58,6 +58,10 @@ ifeq ($(USE_SMART_BUILD),)
   USE_SMART_BUILD = no
 endif
 
+ifeq ($(USE_BOOTLOADER),)
+  USE_BOOTLOADER = no
+endif
+
 #
 # Build global options
 ##############################################################################
@@ -137,6 +141,10 @@ include $(PROJECT_DIR)/controllers/system/system.mk
 include $(PROJECT_DIR)/controllers/trigger/trigger.mk
 include $(PROJECT_DIR)/console/console.mk
 
+ifeq ($(USE_BOOTLOADER),yes)
+include $(PROJECT_DIR)/bootloader/bootloader.mk
+endif
+
 # Define linker script file here
 ifeq ($(LDSCRIPT),)
   LDSCRIPT= config/stm32f4ems/STM32F407xG_CCM.ld
@@ -151,6 +159,7 @@ CSRC = $(STARTUPSRC) \
 	$(HALSRC) \
 	$(PLATFORMSRC) \
 	$(BOARDSRC) \
+	$(BOOTLOADERSRC) \
 	$(CHIBIOS)/os/various/syscalls.c \
 	$(CHIBIOS)/os/hal/lib/streams/memstreams.c \
 	$(CHIBIOS)/os/hal/lib/streams/chprintf.c \
@@ -222,6 +231,7 @@ INCDIR = $(PORTINC) \
 	$(HALINC) \
 	$(PLATFORMINC) \
 	$(BOARDINC) \
+	$(BOOTLOADERINC) \
 	$(CHCPPINC) \
 	$(CHIBIOS)/os/hal/lib/streams \
 	$(CHIBIOS)/os/various \
diff --git a/firmware/bootloader/compile_bootloader.bat b/firmware/bootloader/compile_bootloader.bat
new file mode 100644
index 0000000000..f24f43bb9a
--- /dev/null
+++ b/firmware/bootloader/compile_bootloader.bat
@@ -0,0 +1,20 @@
+@echo off
+
+rem Needed for board overrides
+IF "%BOOTLOADER_CODE_PATH%"=="" (SET BOOTLOADER_CODE_PATH="..")
+
+echo Starting compilation
+make -f src/Makefile %1 %2 %3
+
+if errorlevel 1 echo make compilation failed
+if errorlevel 1 exit -1
+ 
+echo Build complete success.
+
+cd blbuild
+rem Generate a header file with binary bootloader code
+java -jar ../../../java_tools/bin2header.jar bootloader.bin %BOOTLOADER_CODE_PATH%/bootloader_generated.hxx "static const volatile uint8_t bootloader_code[] BOOTLOADER_SECTION"
+cd ..
+
+rem Touch 'bootloader_storage.c' to update its modification date (needed for make)
+copy /b bootloader_storage.c +,,
diff --git a/firmware/bootloader/src/dfu.h b/firmware/bootloader/src/dfu.h
new file mode 100644
index 0000000000..f47347e535
--- /dev/null
+++ b/firmware/bootloader/src/dfu.h
@@ -0,0 +1,55 @@
+#ifndef DFU_H_
+#define DFU_H_
+
+#include "tunerstudio_io.h"
+
+// This is where the bootloader starts
+#define BOOTLOADER_ADDR    0x08000000
+// Bootloader code max. size, in bytes
+#define BOOTLOADER_SIZE    0x4000
+// Number of sectors for the bootloader
+#define BOOTLOADER_NUM_SECTORS (BOOTLOADER_SIZE/0x4000)
+
+// This is where the application starts
+#define APPLICATION_ADDR   0x08008000
+
+#define DFU_BUFFER_SIZE    258   // Max. 256 bytes at a time plus 2 bytes (numBytes+checksum)
+
+
+// DFU/USART Protocol is described in AN3155 document "Application note. USART protocol used in the STM32 bootloader"
+// http://www.st.com/resource/en/application_note/cd00264342.pdf
+
+#define DFU_UART_CHECK     0x7F  // "UART handshake" escape byte
+
+#define DFU_GET_LIST_CMD   0x00  // "Get supported commands list" command
+#define DFU_DEVICE_ID_CMD  0x02  // "Get device ID" command
+#define DFU_READ_CMD       0x11  // "Read memory" command
+#define DFU_GO_CMD         0x21  // "Go" command
+#define DFU_WRITE_CMD      0x31  // "Write memory" command
+#define DFU_ERASE_CMD      0x44  // "Erase memory" command
+
+#define DFU_VERSION_NUMBER 0x31  // The DFU protocol version number
+#define DFU_ACK_BYTE       0x79  // Acknowledge byte ID
+#define DFU_NACK_BYTE      0x1F  // Not-Acknowledge byte ID
+
+#define DFU_SR5_TIMEOUT_FIRST  MS2ST(100)
+#define DFU_SR5_TIMEOUT_NORMAL MS2ST(1000)
+
+#define MCU_REVISION_MASK  0xfff // MCU Revision ID is needed by DFU protocol
+
+// The address in MCU system memory where the bootloader version number is stored (2 bytes)
+#define DFU_BOOTLOADER_VERSION_ADDRESS 0x1FFF76DE
+
+/**
+  * @brief  This function waits for the command to apply (write, read etc...)
+  */
+bool dfuStartLoop(void);
+/**
+  * @brief  Jump to the application
+  */
+void dfuJumpToApp(uint32_t addr);
+
+ts_channel_s *getTsChannel();
+
+
+#endif /* DFU_H_ */