1 /* 2 * (C) Copyright 2010 3 * Texas Instruments, <www.ti.com> 4 * 5 * Aneesh V <aneesh@ti.com> 6 * 7 * See file CREDITS for list of people who contributed to this 8 * project. 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License as 12 * published by the Free Software Foundation; either version 2 of 13 * the License, or (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 23 * MA 02111-1307 USA 24 */ 25 #include <common.h> 26 #include <spl.h> 27 #include <asm/u-boot.h> 28 #include <asm/utils.h> 29 #include <mmc.h> 30 #include <fat.h> 31 #include <version.h> 32 33 DECLARE_GLOBAL_DATA_PTR; 34 35 static int mmc_load_image_raw(struct mmc *mmc) 36 { 37 unsigned long err; 38 u32 image_size_sectors; 39 struct image_header *header; 40 41 header = (struct image_header *)(CONFIG_SYS_TEXT_BASE - 42 sizeof(struct image_header)); 43 44 /* read image header to find the image size & load address */ 45 err = mmc->block_dev.block_read(0, 46 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 1, 47 header); 48 49 if (err == 0) 50 goto end; 51 52 spl_parse_image_header(header); 53 54 /* convert size to sectors - round up */ 55 image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) / 56 mmc->read_bl_len; 57 58 /* Read the header too to avoid extra memcpy */ 59 err = mmc->block_dev.block_read(0, 60 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 61 image_size_sectors, (void *)spl_image.load_addr); 62 63 end: 64 if (err == 0) 65 printf("spl: mmc blk read err - %lu\n", err); 66 67 return (err == 0); 68 } 69 70 #ifdef CONFIG_SPL_FAT_SUPPORT 71 static int mmc_load_image_fat(struct mmc *mmc, const char *filename) 72 { 73 int err; 74 struct image_header *header; 75 76 header = (struct image_header *)(CONFIG_SYS_TEXT_BASE - 77 sizeof(struct image_header)); 78 79 err = file_fat_read(filename, header, sizeof(struct image_header)); 80 if (err <= 0) 81 goto end; 82 83 spl_parse_image_header(header); 84 85 err = file_fat_read(filename, (u8 *)spl_image.load_addr, 0); 86 87 end: 88 if (err <= 0) 89 printf("spl: error reading image %s, err - %d\n", 90 filename, err); 91 92 return (err <= 0); 93 } 94 95 #ifdef CONFIG_SPL_OS_BOOT 96 static int mmc_load_image_fat_os(struct mmc *mmc) 97 { 98 int err; 99 100 err = file_fat_read(CONFIG_SPL_FAT_LOAD_ARGS_NAME, 101 (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0); 102 if (err <= 0) { 103 printf("spl: error reading image %s, err - %d\n", 104 CONFIG_SPL_FAT_LOAD_ARGS_NAME, err); 105 return -1; 106 } 107 108 return mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_KERNEL_NAME); 109 } 110 #endif 111 112 #endif 113 114 void spl_mmc_load_image(void) 115 { 116 struct mmc *mmc; 117 int err; 118 u32 boot_mode; 119 120 mmc_initialize(gd->bd); 121 /* We register only one device. So, the dev id is always 0 */ 122 mmc = find_mmc_device(0); 123 if (!mmc) { 124 puts("spl: mmc device not found!!\n"); 125 hang(); 126 } 127 128 err = mmc_init(mmc); 129 if (err) { 130 printf("spl: mmc init failed: err - %d\n", err); 131 hang(); 132 } 133 134 boot_mode = spl_boot_mode(); 135 if (boot_mode == MMCSD_MODE_RAW) { 136 debug("boot mode - RAW\n"); 137 err = mmc_load_image_raw(mmc); 138 #ifdef CONFIG_SPL_FAT_SUPPORT 139 } else if (boot_mode == MMCSD_MODE_FAT) { 140 debug("boot mode - FAT\n"); 141 142 err = fat_register_device(&mmc->block_dev, 143 CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION); 144 if (err) { 145 printf("spl: fat register err - %d\n", err); 146 hang(); 147 } 148 149 #ifdef CONFIG_SPL_OS_BOOT 150 if (spl_start_uboot() || mmc_load_image_fat_os(mmc)) 151 #endif 152 err = mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME); 153 #endif 154 } else { 155 puts("spl: wrong MMC boot mode\n"); 156 hang(); 157 } 158 159 if (err) 160 hang(); 161 } 162