Implemented basic bootloader

Author: bbogush

firmware/Makefile

@@ -2,16 +2,21 @@
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 3.
 
+BOOT_DIR=bootloader
 PROG_DIR=programmer
 
 all:
+	$(MAKE) -C $(BOOT_DIR)
 	$(MAKE) -C $(PROG_DIR)
 
 clean:
+	$(MAKE) -C $(BOOT_DIR) clean
 	$(MAKE) -C $(PROG_DIR) clean
 
 distclean:
+	$(MAKE) -C $(BOOT_DIR) distclean
 	$(MAKE) -C $(PROG_DIR) distclean
 
 program:
+	$(MAKE) -C $(BOOT_DIR) program
 	$(MAKE) -C $(PROG_DIR) program

firmware/bootloader/Makefile

@@ -0,0 +1,84 @@
+# Copyright (C) 2017 Bogdan Bogush <[email protected]>
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 3.
+
+PROG_NAME=bootloader_fw
+
+SRC_DIR=./
+OBJ_DIR=obj/
+LIB_DIR=../libs/
+TOOLCHAIN=../../../compiler/gcc-arm-none-eabi-4_9-2015q1/bin/arm-none-eabi-
+PROG=$(OBJ_DIR)$(PROG_NAME)
+
+SPL_PATH=$(LIB_DIR)spl/
+SPL_DEVICE_SUPPORT_PATH=$(SPL_PATH)CMSIS/CM3/DeviceSupport/ST/STM32F10x/
+SPL_CORE_SUPPORT=$(SPL_PATH)CMSIS/CM3/CoreSupport/
+SPL_PERIPH_PATH=$(SPL_PATH)STM32F10x_StdPeriph_Driver/
+SPL_LIB=stm32f10x
+SPL_CONFIG_FILE=$(SPL_PATH)stm32f10x_conf.h
+SPL_FLAGS=-DSTM32F10X_HD -DCONFIG_BOOTLOADER
+
+CC=$(TOOLCHAIN)gcc
+OBJCOPY=$(TOOLCHAIN)objcopy
+OBJDUMP=$(TOOLCHAIN)objdump
+SIZE=$(TOOLCHAIN)size
+
+INCLUDES=-include$(SPL_CONFIG_FILE)
+INCLUDES+=-I$(SPL_CORE_SUPPORT)
+INCLUDES+=-I$(SPL_DEVICE_SUPPORT_PATH)
+INCLUDES+=-I$(SPL_PATH)
+INCLUDES+=-I$(SPL_PERIPH_PATH)inc
+INCLUDES+=-I$(SRC_DIR)
+
+CFLAGS=-g -Wall -Werror -O3
+CFLAGS+=$(INCLUDES) -MMD -MP
+CFLAGS+=-ffunction-sections -fdata-sections
+CFLAGS+=-mcpu=cortex-m3 -mthumb
+CFLAGS+=$(SPL_FLAGS)
+
+LDFLAGS=-mcpu=cortex-m3 -mthumb -Wl,--gc-sections -Wl,-Map=$(PROG).map
+
+vpath %.c $(SRC_DIR) $(SPL_DEVICE_SUPPORT_PATH) $(SRC_BSP_DIR)
+vpath %.s $(SRC_DIR)
+
+STARTUP=startup_stm32f10x_hd.s
+
+SRCS=main.c system_stm32f10x.c syscalls.c uart.c
+
+OBJS=$(addprefix $(OBJ_DIR),$(SRCS:.c=.o)) \
+  $(addprefix $(OBJ_DIR),$(STARTUP:.s=.o))
+DEPS=$(OBJS:%.o=%.d)
+
+LINKER_SCRIPT=$(SRC_DIR)stm32_flash.ld
+
+all: lib dirs $(PROG).elf
+
+lib:
+	$(MAKE) -C $(SPL_PATH)
+
+dirs:
+	mkdir -p $(OBJ_DIR)
+
+$(PROG).elf: $(OBJS)
+	$(CC) $(LDFLAGS) -o $@ $^ -L$(SPL_PATH) -l$(SPL_LIB) -T$(LINKER_SCRIPT)
+	$(OBJCOPY) -O ihex $(PROG).elf $(PROG).hex
+	$(OBJCOPY) -O binary $(PROG).elf $(PROG).bin
+	$(OBJDUMP) -St $(PROG).elf > $(PROG).lst
+	$(SIZE) $(PROG).elf
+
+$(OBJ_DIR)%.o: %.c
+	$(CC) -c $(CFLAGS) $< -o $@ 
+
+$(OBJ_DIR)%.o: %.s
+	$(CC) -c $(CFLAGS) $< -o $@
+
+-include $(DEPS)
+
+clean:
+	rm -rf $(OBJ_DIR)
+
+distclean: clean
+	$(MAKE) -C $(SPL_PATH) clean
+
+program:
+	st-flash write $(PROG).bin 0x8000000

firmware/bootloader/main.c

@@ -0,0 +1,53 @@
+/*  Copyright (C) 2017 Bogdan Bogush <[email protected]>
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 3.
+ */
+
+#include "uart.h"
+#include "version.h"
+#include <stdio.h>
+#include <string.h>
+
+/* Flash layout
+ * ------------ 0x08000000
+ * |bootloader |
+ * | 16K       |
+ * ------------ 0x08004000
+ * |image1     |   
+ * |120K       |
+ * -------------0x08022000
+ * |image2     |
+ * |120K       |
+ * -------------0x08040000
+ */
+
+#define STR(a) #a
+#define MAKE_STR(a) STR(a)
+#define VERSION "\r\nBootloader ver: " MAKE_STR(SW_VERSION_MAJOR) "." \
+    MAKE_STR(SW_VERSION_MINOR) "." MAKE_STR(SW_VERSION_BUILD) "\r\n"
+
+#define APP_ADDRESS_OFFSET 0x4000
+#define APP_ADDRESS (FLASH_BASE + APP_ADDRESS_OFFSET)
+
+typedef void (*app_func_t)(void);
+
+int main()
+{
+    app_func_t app;
+    uint32_t jump_addr;
+
+    uart_init();
+    print(VERSION);
+
+    /* Relocate vector table */
+    NVIC_SetVectorTable(NVIC_VectTab_FLASH, APP_ADDRESS_OFFSET);
+    /* Set application address */
+    jump_addr = *(__IO uint32_t *)(APP_ADDRESS + 4);
+    app = (app_func_t)jump_addr;
+    /* Initialize application's Stack Pointer */
+    __set_MSP(*(__IO uint32_t *)APP_ADDRESS);
+    /* Start application */
+    app();
+
+    return 0;
+}