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author | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-09-30 23:49:17 +0200 |
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committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-09-30 23:49:17 +0200 |
commit | 1c27059a2f7158a9c9a8778535b030935d75179d (patch) | |
tree | bf577d5c9f0da21c5d57feed1091214e54c39dec /drivers/mmc/spl_mmc.c | |
parent | 8f0732ac3dc3bdbbcada313dc4b4b38d5d2c376a (diff) | |
parent | 4668a086bb0a769b741e3a4ffab85f1c41c7cdb8 (diff) | |
download | u-boot-imx-1c27059a2f7158a9c9a8778535b030935d75179d.zip u-boot-imx-1c27059a2f7158a9c9a8778535b030935d75179d.tar.gz u-boot-imx-1c27059a2f7158a9c9a8778535b030935d75179d.tar.bz2 |
Merge remote-tracking branch 'u-boot/master'
Diffstat (limited to 'drivers/mmc/spl_mmc.c')
-rw-r--r-- | drivers/mmc/spl_mmc.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/drivers/mmc/spl_mmc.c b/drivers/mmc/spl_mmc.c new file mode 100644 index 0000000..753c6a0 --- /dev/null +++ b/drivers/mmc/spl_mmc.c @@ -0,0 +1,136 @@ +/* + * (C) Copyright 2010 + * Texas Instruments, <www.ti.com> + * + * Aneesh V <aneesh@ti.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> +#include <spl.h> +#include <asm/u-boot.h> +#include <asm/utils.h> +#include <mmc.h> +#include <fat.h> +#include <version.h> + +DECLARE_GLOBAL_DATA_PTR; + +static void mmc_load_image_raw(struct mmc *mmc) +{ + u32 image_size_sectors, err; + const struct image_header *header; + + header = (struct image_header *)(CONFIG_SYS_TEXT_BASE - + sizeof(struct image_header)); + + /* read image header to find the image size & load address */ + err = mmc->block_dev.block_read(0, + CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 1, + (void *)header); + + if (err <= 0) + goto end; + + spl_parse_image_header(header); + + /* convert size to sectors - round up */ + image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) / + mmc->read_bl_len; + + /* Read the header too to avoid extra memcpy */ + err = mmc->block_dev.block_read(0, + CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, + image_size_sectors, (void *)spl_image.load_addr); + +end: + if (err <= 0) { + printf("spl: mmc blk read err - %d\n", err); + hang(); + } +} + +#ifdef CONFIG_SPL_FAT_SUPPORT +static void mmc_load_image_fat(struct mmc *mmc) +{ + s32 err; + struct image_header *header; + + header = (struct image_header *)(CONFIG_SYS_TEXT_BASE - + sizeof(struct image_header)); + + err = fat_register_device(&mmc->block_dev, + CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION); + if (err) { + printf("spl: fat register err - %d\n", err); + hang(); + } + + err = file_fat_read(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME, + (u8 *)header, sizeof(struct image_header)); + if (err <= 0) + goto end; + + spl_parse_image_header(header); + + err = file_fat_read(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME, + (u8 *)spl_image.load_addr, 0); + +end: + if (err <= 0) { + printf("spl: error reading image %s, err - %d\n", + CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME, err); + hang(); + } +} +#endif + +void spl_mmc_load_image(void) +{ + struct mmc *mmc; + int err; + u32 boot_mode; + + mmc_initialize(gd->bd); + /* We register only one device. So, the dev id is always 0 */ + mmc = find_mmc_device(0); + if (!mmc) { + puts("spl: mmc device not found!!\n"); + hang(); + } + + err = mmc_init(mmc); + if (err) { + printf("spl: mmc init failed: err - %d\n", err); + hang(); + } + boot_mode = spl_boot_mode(); + if (boot_mode == MMCSD_MODE_RAW) { + debug("boot mode - RAW\n"); + mmc_load_image_raw(mmc); +#ifdef CONFIG_SPL_FAT_SUPPORT + } else if (boot_mode == MMCSD_MODE_FAT) { + debug("boot mode - FAT\n"); + mmc_load_image_fat(mmc); +#endif + } else { + puts("spl: wrong MMC boot mode\n"); + hang(); + } +} |