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, unsigned long sector) 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, sector, 1, header); 46 if (err == 0) 47 goto end; 48 49 spl_parse_image_header(header); 50 51 /* convert size to sectors - round up */ 52 image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) / 53 mmc->read_bl_len; 54 55 /* Read the header too to avoid extra memcpy */ 56 err = mmc->block_dev.block_read(0, sector, image_size_sectors, 57 (void *)spl_image.load_addr); 58 59 end: 60 if (err == 0) 61 printf("spl: mmc blk read err - %lu\n", err); 62 63 return (err == 0); 64 } 65 66 #ifdef CONFIG_SPL_OS_BOOT 67 static int mmc_load_image_raw_os(struct mmc *mmc) 68 { 69 if (!mmc->block_dev.block_read(0, 70 CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR, 71 CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS, 72 (void *)CONFIG_SYS_SPL_ARGS_ADDR)) { 73 printf("mmc args blk read error\n"); 74 return -1; 75 } 76 77 return mmc_load_image_raw(mmc, CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR); 78 } 79 #endif 80 81 #ifdef CONFIG_SPL_FAT_SUPPORT 82 static int mmc_load_image_fat(struct mmc *mmc, const char *filename) 83 { 84 int err; 85 struct image_header *header; 86 87 header = (struct image_header *)(CONFIG_SYS_TEXT_BASE - 88 sizeof(struct image_header)); 89 90 err = file_fat_read(filename, header, sizeof(struct image_header)); 91 if (err <= 0) 92 goto end; 93 94 spl_parse_image_header(header); 95 96 err = file_fat_read(filename, (u8 *)spl_image.load_addr, 0); 97 98 end: 99 if (err <= 0) 100 printf("spl: error reading image %s, err - %d\n", 101 filename, err); 102 103 return (err <= 0); 104 } 105 106 #ifdef CONFIG_SPL_OS_BOOT 107 static int mmc_load_image_fat_os(struct mmc *mmc) 108 { 109 int err; 110 111 err = file_fat_read(CONFIG_SPL_FAT_LOAD_ARGS_NAME, 112 (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0); 113 if (err <= 0) { 114 printf("spl: error reading image %s, err - %d\n", 115 CONFIG_SPL_FAT_LOAD_ARGS_NAME, err); 116 return -1; 117 } 118 119 return mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_KERNEL_NAME); 120 } 121 #endif 122 123 #endif 124 125 void spl_mmc_load_image(void) 126 { 127 struct mmc *mmc; 128 int err; 129 u32 boot_mode; 130 131 mmc_initialize(gd->bd); 132 /* We register only one device. So, the dev id is always 0 */ 133 mmc = find_mmc_device(0); 134 if (!mmc) { 135 puts("spl: mmc device not found!!\n"); 136 hang(); 137 } 138 139 err = mmc_init(mmc); 140 if (err) { 141 printf("spl: mmc init failed: err - %d\n", err); 142 hang(); 143 } 144 145 boot_mode = spl_boot_mode(); 146 if (boot_mode == MMCSD_MODE_RAW) { 147 debug("boot mode - RAW\n"); 148 #ifdef CONFIG_SPL_OS_BOOT 149 if (spl_start_uboot() || mmc_load_image_raw_os(mmc)) 150 #endif 151 err = mmc_load_image_raw(mmc, 152 CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR); 153 #ifdef CONFIG_SPL_FAT_SUPPORT 154 } else if (boot_mode == MMCSD_MODE_FAT) { 155 debug("boot mode - FAT\n"); 156 157 err = fat_register_device(&mmc->block_dev, 158 CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION); 159 if (err) { 160 printf("spl: fat register err - %d\n", err); 161 hang(); 162 } 163 164 #ifdef CONFIG_SPL_OS_BOOT 165 if (spl_start_uboot() || mmc_load_image_fat_os(mmc)) 166 #endif 167 err = mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME); 168 #endif 169 } else { 170 puts("spl: wrong MMC boot mode\n"); 171 hang(); 172 } 173 174 if (err) 175 hang(); 176 } 177