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/*
* (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 int mmc_load_image_raw(struct mmc *mmc)
{
unsigned long err;
u32 image_size_sectors;
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,
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 - %lu\n", err);
return (err == 0);
}
#ifdef CONFIG_SPL_FAT_SUPPORT
static int mmc_load_image_fat(struct mmc *mmc, const char *filename)
{
int err;
struct image_header *header;
header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
sizeof(struct image_header));
err = file_fat_read(filename, header, sizeof(struct image_header));
if (err <= 0)
goto end;
spl_parse_image_header(header);
err = file_fat_read(filename, (u8 *)spl_image.load_addr, 0);
end:
if (err <= 0)
printf("spl: error reading image %s, err - %d\n",
filename, err);
return (err <= 0);
}
#ifdef CONFIG_SPL_OS_BOOT
static int mmc_load_image_fat_os(struct mmc *mmc)
{
int err;
err = file_fat_read(CONFIG_SPL_FAT_LOAD_ARGS_NAME,
(void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
if (err <= 0) {
printf("spl: error reading image %s, err - %d\n",
CONFIG_SPL_FAT_LOAD_ARGS_NAME, err);
return -1;
}
return mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_KERNEL_NAME);
}
#endif
#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");
err = mmc_load_image_raw(mmc);
#ifdef CONFIG_SPL_FAT_SUPPORT
} else if (boot_mode == MMCSD_MODE_FAT) {
debug("boot mode - FAT\n");
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();
}
#ifdef CONFIG_SPL_OS_BOOT
if (spl_start_uboot() || mmc_load_image_fat_os(mmc))
#endif
err = mmc_load_image_fat(mmc, CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME);
#endif
} else {
puts("spl: wrong MMC boot mode\n");
hang();
}
if (err)
hang();
}
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