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 void 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 hang(); 67 } 68 } 69 70 #ifdef CONFIG_SPL_FAT_SUPPORT 71 static void mmc_load_image_fat(struct mmc *mmc) 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 = fat_register_device(&mmc->block_dev, 80 CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION); 81 if (err) { 82 printf("spl: fat register err - %d\n", err); 83 hang(); 84 } 85 86 err = file_fat_read(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME, 87 header, sizeof(struct image_header)); 88 if (err <= 0) 89 goto end; 90 91 spl_parse_image_header(header); 92 93 err = file_fat_read(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME, 94 (u8 *)spl_image.load_addr, 0); 95 96 end: 97 if (err <= 0) { 98 printf("spl: error reading image %s, err - %d\n", 99 CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME, err); 100 hang(); 101 } 102 } 103 #endif 104 105 void spl_mmc_load_image(void) 106 { 107 struct mmc *mmc; 108 int err; 109 u32 boot_mode; 110 111 mmc_initialize(gd->bd); 112 /* We register only one device. So, the dev id is always 0 */ 113 mmc = find_mmc_device(0); 114 if (!mmc) { 115 puts("spl: mmc device not found!!\n"); 116 hang(); 117 } 118 119 err = mmc_init(mmc); 120 if (err) { 121 printf("spl: mmc init failed: err - %d\n", err); 122 hang(); 123 } 124 boot_mode = spl_boot_mode(); 125 if (boot_mode == MMCSD_MODE_RAW) { 126 debug("boot mode - RAW\n"); 127 mmc_load_image_raw(mmc); 128 #ifdef CONFIG_SPL_FAT_SUPPORT 129 } else if (boot_mode == MMCSD_MODE_FAT) { 130 debug("boot mode - FAT\n"); 131 mmc_load_image_fat(mmc); 132 #endif 133 } else { 134 puts("spl: wrong MMC boot mode\n"); 135 hang(); 136 } 137 } 138