mini2440 的 BIOS  烧写 image 的地址疑惑

复制代码 #include <stdio.h> #include <stdlib.h> #include <string.h> #include <malloc.h> #include <errno.h> #include <sys/types.h> #include <sys/stat.h> #include <sys/time.h> #include <unistd.h> #include <fcntl.h> #include <stdint.h> const char* dev = "/dev/secbulk0"; #define BLOCK_SIZE    (1*1024*1024) struct download_buffer {     uint32_t    load_addr;  /* load address */     uint32_t    size; /* data size */     uint8_t        data[0];     /* uint16_t checksum; */ }; static int _download_buffer(struct download_buffer *buf) {     int fd_dev = open(dev, O_WRONLY);     if( -1 == fd_dev) {         printf("Can not open %s: %s\n", dev, strerror(errno));         return -1;     }     printf("Writing data...\n");     size_t remain_size = buf->size;     size_t block_size = BLOCK_SIZE;     size_t writed = 0;     while(remain_size>0) {         size_t to_write = remain_size > block_size ? block_size : remain_size;         if( to_write != write(fd_dev, (unsigned char*)buf + writed, to_write)) {             perror("write failed");             close(fd_dev);             return -1;         }         remain_size -= to_write;         writed += to_write;         printf("\r%02zu%%\t0x%08zX bytes (%zu K)",             (size_t)((uint64_t)writed*100/(buf->size)),             writed,             writed/1024);         fflush(stdout);     }     printf("\n");     close(fd_dev);     return 0; } static inline void cal_and_set_checksum(struct download_buffer *buf) {     uint16_t sum = 0;     int i;     for(i = 0; i < buf->size; i++) {         sum += buf->data[i];     }     *((uint16_t*)(&((uint8_t*)buf)[buf->size - 2])) = sum; } static struct download_buffer* alloc_buffer(size_t data_size) {     struct download_buffer    *buffer = NULL;     size_t total_size = data_size + sizeof(struct download_buffer) + 2;     buffer = (typeof(buffer))malloc(total_size);     if(NULL == buffer)         return NULL;     buffer->size = total_size;     return buffer; } static void free_buffer(struct download_buffer *buf) {     free(buf); } static struct download_buffer *load_file(const char *path, unsigned long load_addr) {     struct stat        file_stat;     struct download_buffer    *buffer = NULL;     unsigned long        total_size;     int            fd;     fd = open(path, O_RDONLY);     if(-1 == fd) {         printf("Can not open file %s: %s\n", path, strerror(errno));         return NULL;     }     if( -1 == fstat(fd, &file_stat) ) {         perror("Get file size filed!\n");         goto error;     }         buffer = alloc_buffer(file_stat.st_size);     if(NULL == buffer) {         perror("malloc failed!\n");         goto error;     }     if( file_stat.st_size !=  read(fd, buffer->data, file_stat.st_size)) {         perror("Read file failed!\n");         goto error;     }     buffer->load_addr = load_addr;     cal_and_set_checksum(buffer);     return buffer; error:     if(fd != -1)         close(fd);     if( NULL != buffer )         free(buffer);     return NULL; } static int download_file(const char *path, unsigned long load_addr) {     struct download_buffer *buffer;     struct timeval __start, __end;     long __time_val = 0;     float speed = 0.0;     buffer = load_file(path, load_addr);     gettimeofday(&__start,NULL);     if (buffer != NULL) {         if (_download_buffer(buffer) == 0) {             gettimeofday(&__end,NULL);             __time_val = (long)(__end.tv_usec - __start.tv_usec)/1000 + \                 (long)(__end.tv_sec - __start.tv_sec) * 1000;             speed = (float)buffer->size/__time_val/(1024*1024) * 1000;             printf("speed: %fM/S\n",speed);             free_buffer(buffer);         } else {             free_buffer(buffer);             return -1;         }     } else         return -1; } int main(int argc, char* argv[]) {     unsigned load_addr = 0x57e00000;     char* path = NULL;     int    c;     while ((c = getopt (argc, argv, "a:h")) != EOF)     switch (c) {     case 'a':         load_addr = strtol(optarg, NULL, 16);         continue;     case '?':     case 'h':     default: usage:         printf("Usage: dwn [-a load_addr] <filename>\n");         printf("Default load address: 0x57e00000\n");         return 1;     }     if (optind < argc)         path = argv[optind];     else         goto usage;     printf("load address: 0x%08X\n", load_addr);     if (download_file(path, load_addr) != 0) {         return -1;     }     return 0; }

在此菜单下:
(1) 先输入“x”格式化系统
(2) 然后再选择“v”开始下载 bootloader,可以选 vboot.bin,也可以选择
supervivi-128M
(3) 再选择“k”开始下载 android 内核:zImage
(4) 最后选择“y”开始下载 mini2440T35_android.img 文件系统文件


unsigned load_addr = 0x57e00000;  // 请问代码中这地址都是 0x57e00000 为什么能透过 mini2440 的 BIOS烧写 supervivi-128M ,  zImage , mini2440T35_android


supervivi-128M ,  zImage , mini2440T35_android  是烧到 nand flash 里面 ？？ 那各自地址是多少？

谢谢

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