使用initrd文件系统 U-boot引导Linux方法

void do_bootm_linux (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],ulong addr, ulong *len_ptr, int verify){ulong initrd_start, initrd_end;......data = addr + sizeof (image_header_t);len = ntohl (hdr->ih_size);...... #if defined(CONFIG_B2) || defined(CONFIG_OSK_OMAP5912)memmove ((void *) ntohl(hdr->ih_load), (uchar *)data, len);data = ntohl(hdr->ih_load);#endif ...... if (data) {initrd_start = data;initrd_end = initrd_start + len;}......#if defined (CONFIG_SETUP_MEMORY_TAGS) || /defined (CONFIG_CMDLINE_TAG) || /defined (CONFIG_INITRD_TAG) || /setup_start_tag (bd);......#ifdef CONFIG_INITRD_TAGif (initrd_start && initrd_end)setup_initrd_tag (bd, initrd_start, initrd_end);#endif......setup_end_tag (bd);#endif......theKernel (0, bd->bi_arch_number, bd->bi_boot_params);}#ifdef CONFIG_INITRD_TAGstatic void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end){params->hdr.tag = ATAG_INITRD2;params->hdr.size = tag_size (tag_initrd);params->u.initrd.start = initrd_start;params->u.initrd.size = initrd_end - initrd_start; params = tag_next (params);}#endif#if defined (CONFIG_SETUP_MEMORY_TAGS) || /defined (CONFIG_CMDLINE_TAG) || /defined (CONFIG_INITRD_TAG) || /......static void setup_start_tag (bd_t *bd){params = (struct tag *) bd->bi_boot_params;......params = tag_next (params);}int board_init (void){DECLARE_GLOBAL_DATA_PTR;gd->bd->bi_arch_number = 234;gd->bd->bi_boot_params = 0x10000100;......}