LXR uboot/arch/arm/cpu/armv7/omap-common/spl

   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 <asm/u-boot.h>
  27#include <asm/utils.h>
  28#include <asm/arch/sys_proto.h>
  29#include <mmc.h>
  30#include <fat.h>
  31#include <version.h>
  32#include <asm/omap_common.h>
  33#include <asm/arch/mmc_host_def.h>
  34
  35DECLARE_GLOBAL_DATA_PTR;
  36
  37#ifdef CONFIG_GENERIC_MMC
  38int board_mmc_init(bd_t *bis)
  39{
  40        switch (omap_boot_device()) {
  41        case BOOT_DEVICE_MMC1:
  42                omap_mmc_init(0, 0, 0);
  43                break;
  44        case BOOT_DEVICE_MMC2:
  45        case BOOT_DEVICE_MMC2_2:
  46                omap_mmc_init(1, 0, 0);
  47                break;
  48        }
  49        return 0;
  50}
  51#endif
  52
  53static void mmc_load_image_raw(struct mmc *mmc)
  54{
  55        u32 image_size_sectors, err;
  56        const struct image_header *header;
  57
  58        header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  59                                                sizeof(struct image_header));
  60
  61        /* read image header to find the image size & load address */
  62        err = mmc->block_dev.block_read(0,
  63                        CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 1,
  64                        (void *)header);
  65
  66        if (err <= 0)
  67                goto end;
  68
  69        spl_parse_image_header(header);
  70
  71        /* convert size to sectors - round up */
  72        image_size_sectors = (spl_image.size + MMCSD_SECTOR_SIZE - 1) /
  73                                MMCSD_SECTOR_SIZE;
  74
  75        /* Read the header too to avoid extra memcpy */
  76        err = mmc->block_dev.block_read(0,
  77                        CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR,
  78                        image_size_sectors, (void *)spl_image.load_addr);
  79
  80end:
  81        if (err <= 0) {
  82                printf("spl: mmc blk read err - %d\n", err);
  83                hang();
  84        }
  85}
  86
  87static void mmc_load_image_fat(struct mmc *mmc)
  88{
  89        s32 err;
  90        struct image_header *header;
  91
  92        header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
  93                                                sizeof(struct image_header));
  94
  95        err = fat_register_device(&mmc->block_dev,
  96                                CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION);
  97        if (err) {
  98                printf("spl: fat register err - %d\n", err);
  99                hang();
 100        }
 101
 102        err = file_fat_read(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME,
 103                                (u8 *)header, sizeof(struct image_header));
 104        if (err <= 0)
 105                goto end;
 106
 107        spl_parse_image_header(header);
 108
 109        err = file_fat_read(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME,
 110                                (u8 *)spl_image.load_addr, 0);
 111
 112end:
 113        if (err <= 0) {
 114                printf("spl: error reading image %s, err - %d\n",
 115                        CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME, err);
 116                hang();
 117        }
 118}
 119
 120void spl_mmc_load_image(void)
 121{
 122        struct mmc *mmc;
 123        int err;
 124        u32 boot_mode;
 125
 126        mmc_initialize(gd->bd);
 127        /* We register only one device. So, the dev id is always 0 */
 128        mmc = find_mmc_device(0);
 129        if (!mmc) {
 130                puts("spl: mmc device not found!!\n");
 131                hang();
 132        }
 133
 134        err = mmc_init(mmc);
 135        if (err) {
 136                printf("spl: mmc init failed: err - %d\n", err);
 137                hang();
 138        }
 139        boot_mode = omap_boot_mode();
 140        if (boot_mode == MMCSD_MODE_RAW) {
 141                debug("boot mode - RAW\n");
 142                mmc_load_image_raw(mmc);
 143        } else if (boot_mode == MMCSD_MODE_FAT) {
 144                debug("boot mode - FAT\n");
 145                mmc_load_image_fat(mmc);
 146        } else {
 147                puts("spl: wrong MMC boot mode\n");
 148                hang();
 149        }
 150}
 151