IAP升级 整合多个bin文件为一个升级包

1、我们的程序分区目前为：
Boot 0x8000000 – 0x8004000 16KB
Settings 0x8004000 – 0x8006000 8KB
App 0x8006000 – 0x800B000 20KB
Download 0x800B000 – 0x800FFFF 20KB

2、烧录时候的bin文件有三个：
Bootloader.bin. 起始地址0x8000000
Settings.bin 起始地址0x8004000
Application.bin 起始地址0x8006000

3、我们新建一个（16+8+20）*1024个字节的数组，将Bootloader.bin从0开始填到数组中，将Settings.bin从0x4000处填充到数组中，将Application.bin 从0x6000填充到数组中，最后写入文件中，即可得到我们想要的all.bin

4、代码路径：

5、代码分析：
generate_bin.c

#include <stdio.h>
#include <time.h>
#include <string.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include "settings.h"
#include "flash.h"

#define APP_BIN_PATH            "../Application/build/Application.bin"
#define BOOT_BIN_PATH           "../Bootloader/build/Bootloader.bin"
#define SETTING_BIN_PATH        "../Settings/build/Settings.bin"
#define ALL_BIN_LENGTH          (16 + 8 + 20) * 1024
#define OTA_BIN_LENGTH          (8 + 20) * 1024

static int copy_bootloader_bin(MI_U8 *p_buff)
{   
    FILE *file;
    MI_U8 r_buff[BOOT_SIZE] = {0};
    size_t r_size;
    size_t file_size;

    file = fopen(BOOT_BIN_PATH,"rb");

    if (file == NULL)
    {
        printf("fopen BootLoader error\n");
        return -1;
    }

    fseek(file,0,SEEK_END);
    file_size = ftell(file);
    fseek(file,0,SEEK_SET);

    r_size = fread(r_buff,sizeof(MI_U8),sizeof(r_buff),file);
    if (r_size != file_size)
    {
        printf("read bootloader size == %ld\n",r_size);
    }
    else
    {
        printf("read bootloader file ok\n" );
    }
    memcpy(p_buff,r_buff,r_size);

    fclose(file);
    return 0;
}

static int copy_settings_bin(MI_U8 *p_buff)
{

    FILE *file = fopen(SETTING_BIN_PATH,"rb");
    MI_U8 r_buff[SETTINGS_SIZE] = {0};
    size_t r_size;
    size_t file_size;

    if (file == NULL)
    {
        printf("fopen Application error\n");
        return -1;
    }

    fseek(file,0,SEEK_END);
    file_size = ftell(file);
    fseek(file,0,SEEK_SET);

    r_size = fread(r_buff,sizeof(MI_U8),sizeof(r_buff),file);
    if (r_size != file_size)
    {
        printf("read settings size == %ld\n",r_size);
    }
    else
    {
        printf("read settings file ok\n" );
    }
    p_buff += (BOOT_SIZE);
    memcpy(p_buff,r_buff,r_size);

    fclose(file);
    return 0;

}

static int copy_application_bin(MI_U8 *p_buff)
{

    FILE *file = fopen(APP_BIN_PATH,"rb");
    MI_U8 r_buff[APP_SIZE] = {0};
    size_t r_size;
    size_t file_size;

    if (file == NULL)
    {
        printf("fopen Application error\n");
        return -1;
    }

    fseek(file,0,SEEK_END);
    file_size = ftell(file);
    fseek(file,0,SEEK_SET);

    r_size = fread(r_buff,sizeof(MI_U8),sizeof(r_buff),file);
    if (r_size != file_size)
    {
        printf("read Application size == %ld\n",r_size);
    }
    else
    {
        printf("read Application file ok\n" );
    }

    p_buff += (BOOT_SIZE + SETTINGS_SIZE);
    memcpy(p_buff,r_buff,r_size);

    fclose(file);
    return 0;
}

static MI_BOOL create_all_bin(void)
{
    int ret;
    MI_U8 all_data[ALL_BIN_LENGTH] = {0};
    size_t w_size = 0;

    ret = copy_bootloader_bin(all_data);

    if (ret != 0)
    {
        printf("copy_bootloader_bin error\n");
        return -1;
    }

    ret = copy_settings_bin(all_data);

    if (ret != 0)
    {
        printf("copy_settings_bin error\n");
        return -1;
    }

    ret = copy_application_bin(all_data);

    if (ret != 0)
    {
        printf("copy_application_bin error\n");
        return -1;
    }

    FILE *file = fopen("../output/all.bin","wb");

    if (file == NULL)
    {
        printf("fopen all.bin error\n");
        return -1;
    }

    w_size = fwrite(all_data,1,(BOOT_SIZE + SETTINGS_SIZE + APP_SIZE),file);
    fclose(file);

    if (w_size == BOOT_SIZE + SETTINGS_SIZE + APP_SIZE)
    {
        printf("Create bin is Ok\n");
    }
    else
    {
        printf("Create bin error\n");
        return -1;
    }

    return MI_TRUE;
}

int main(int argc,char *argv[])
{
    if (MI_TRUE == create_all_bin())
        printf(FONT_COLOR_BLUE"Create all.bin Success!\n"COLOR_NONE);
    else
        printf(BACKGROUND_COLOR_RED"Create all.bin Success!\n"COLOR_NONE);
    return 0;
}

6、Makefile

CC = gcc
SRC = $(wildcard *.c)
OBJ = $(addprefix $(BUILD_DIR)/,$(notdir $(SRC:.c=.o)))
#OBJ = $(patsubst %.c, %.o, $(SRC))

TRAGET = generate
BUILD_DIR = build


C_INCLUDES +=  \
	-I../Common/Flash \
	-I../Common/Settings \
	-I../Common

C_FLAG += -Wall -MD -MP -MF"$(@:%.o=%.d)"

C_FLAG += -DUSER_SETTING_IN_HOST
 
all: $(BUILD_DIR) $(BUILD_DIR)/$(TRAGET)

$(BUILD_DIR)/$(TRAGET):$(OBJ) Makefile | $(BUILD_DIR) 
	$(CC)  $< -o $@

$(OBJ): $(SRC)  Makefile | $(BUILD_DIR) 
	$(CC) -c $(C_FLAG) $(C_INCLUDES) $< -o $@

$(BUILD_DIR):
	@-mkdir $@

clean:
	@rm -rf $(TRAGET)
	@rm -rf $(OBJ)
	@rm -rf $(BUILD_DIR)

-include $(wildcard $(BUILD_DIR)/*.d)

# *** EOF ***

7、根目录下make后回在output下生成all.bin文件
8、make allbin 烧录到办卡验证。