sd卡烧录--sdfuse命令分析

========================================= cmd_fastboot.c 命令格式： sdfuse flash kernel zImage sdfuse flash system system.ext3 ========================================= [cpp] view plaincopyprint? int do_sdfuse (cmd_tbl_t *cmdtp,int flag,int argc,char *argv[]) { int ret = 1; int enable_reset = 0; struct mmc *mmc = find_mmc_device(CFG_FASTBOOT_SDFUSE_MMCDEV); if (mmc_init(mmc)) { printf("sdmmc init is failed.n"); } interface.nand_block_size = CFG_FASTBOOT_PAGESIZE * 64; interface.transfer_buffer = (unsigned char *) CFG_FASTBOOT_TRANSFER_BUFFER; interface.transfer_buffer_size = CFG_FASTBOOT_TRANSFER_BUFFER_SIZE; //add by <a href="mailto:xiao@2012-04-17">xiao@2012-04-17</a> ：当emmc为空片时，可以支持sd卡直接格式化emmc，并分区。 #ifdef CONFIG_EMMC_INAND printf("[ Check emmc 0 MBR label..]n"); if(fdisk_emmc0_partition() == 0){ //format_part_dos(); //mmcblk0p1 format_part_ext3(2); //mmcblk0p2 format_part_ext3(3); //mmcblk0p3 format_part_ext3(4); //mmcblk0p4 } #endif printf("[Fusing Image from SD Card.]n"); if (set_partition_table()) return 1; if ((argc == 2) && !strcmp(argv[1],"flashall")) { //sdfuse flash bootloader u-boot.bin //sdfuse flash kernel kernel.img //sdfuse flash ramdisk ramdisk.img //sdfuse flash system system.img //add by xiao@2012-04-17 修改文件，支持sd烧写 if (update_from_sd("bootloader","u-boot_emmc.bin")) goto err_sdfuse; if (update_from_sd("kernel","zImage")) goto err_sdfuse; if (update_from_sd("system","system.ext3")) goto err_sdfuse; if (update_from_sd("userdata",NULL)) goto err_sdfuse; if (update_from_sd("cache",NULL)) goto err_sdfuse; delay1s(); delay1s(); delay1s(); enable_reset = 1; ret = 0; } else if ((argc == 4) && !strcmp(argv[1],"flash")) { LCD_turnon(); if (update_from_sd(argv[2],argv[3])) goto err_sdfuse; ret = 0; } else if ((argc == 3) && !strcmp(argv[1],"erase")) { LCD_turnon(); if (update_from_sd(argv[2],NULL)) goto err_sdfuse; ret = 0; } else { printf("Usage:n%sn",cmdtp->usage); return 1; } err_sdfuse: LCD_setfgcolor(0x000010); LCD_setleftcolor(0x000010); LCD_setprogress(100); if (enable_reset) do_reset (NULL,NULL); return ret; } [cpp] view plaincopyprint? static int update_from_sd (char *part,char *file) { int ret = 1; /* Read file */ if (file != NULL) { long size; unsigned long offset; unsigned long count; char filename[32]; block_dev_desc_t *dev_desc=NULL; printf("Partition: %s,File: %s/%sn",part,CFG_FASTBOOT_SDFUSE_DIR,file); // LCD_setfgcolor(0x2E8B57); // LCD_setprogress(100); dev_desc = get_dev("mmc",CFG_FASTBOOT_SDFUSE_MMCDEV); if (dev_desc == NULL) { printf ("** Invalid boot device **n"); return 1; } if (fat_register_device(dev_desc,CFG_FASTBOOT_SDFUSE_MMCPART) != 0) { printf ("** Invalid partition **n"); return 1; } sprintf(filename,"%s/%s",file); offset = CFG_FASTBOOT_TRANSFER_BUFFER; count = 0; size = file_fat_read (filename,(unsigned char *) offset,count); if (size == -1) { printf("Failed to read %sn",filename); return 1; } download_size = 0; // should be 0 download_bytes = size; printf ("%ld (0x%08x) bytes readn",size,size); } else { printf("Partition: %sn",part); download_size = 0; // should be 0 download_bytes = 0; } /* Write image into partition */ /* If file is empty or NULL,just erase the part. */ { char command[32]; if (download_bytes == 0) sprintf(command,"%s:%s","erase",part); else sprintf(command,"flash",part); //最后还是调用fastboot的这个接口，来烧写文件。 ret = rx_handler(command,sizeof(command)); } return ret; } SD卡支持自动格式，分区emmc命令： [cpp] view plaincopyprint? //add by xiao@2012-04-17 for: test emmc 0 format partition #ifdef CONFIG_EMMC_INAND //ext3format static void format_part_ext3(int dev_num) { char run_cmd[80]; int status = 1; char response[65]; sprintf(run_cmd,"ext3format mmc 0:%d",dev_num); status = run_command(run_cmd,0); if (status) { sprintf(response,"FAILfailed to ext3format partition"); } else { //printf("partition [ %d ] erasedn",dev_num); sprintf(response,"OKAY"); } fastboot_tx_status(response,strlen(response),FASTBOOT_TX_ASYNC); } //vfat static void format_part_dos () { char run_cmd[80]; int status = 1; char response[65]; sprintf(run_cmd,"fatformat mmc 0:1"); status = run_command(run_cmd,"FAILfailed to fatformat partition"); } else { //printf("partition '%s' fatformatn","fat"); sprintf(response,FASTBOOT_TX_ASYNC); } //fdisk partition int fdisk_emmc0_partition() { unsigned char buffer[512]; block_dev_desc_t *dev_desc=NULL; char run_cmd[80]; int status = 1; char response[65]; int ret =1; struct mmc *mmc = find_mmc_device(0); if (mmc_init(mmc)) { printf("emmc 0 init is failed.n"); } dev_desc = get_dev("mmc",0); if (dev_desc == NULL) { printf ("** Invalid boot device : emmc 0 **n"); return ret; } //检测是否是MBR分区列表 if ((dev_desc->block_read(dev_desc->dev,1,(ulong *) buffer) != 1) || (buffer[0x1fe] != 0x55 || buffer[0x1ff] != 0xaa)) { printf ("bad MBR sector! so fdisk emmc 0 nown"); sprintf(run_cmd,"fdisk -c 0"); status = run_command(run_cmd,"FAILfailed to fdisk emmc 0"); } else { printf("fdisk emmc 0 success! n"); sprintf(response,"OKAY"); } ret =status; fastboot_tx_status(response,FASTBOOT_TX_ASYNC); } return ret; } #endif 转自http://blog.csdn.net/yunfly163/article/details/7497160