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https://github.com/brain-hackers/u-boot-brain
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7dbe63bc95
We use the switch CONFIG_SUPPORT_EMMC_BOOT today to enable some additional features of the eMMC boot partitions. Add support for being told that we have booted from one of these partitions to the spl framework and implement this on TI OMAP/related. Cc: Pantelis Antoniou <panto@antoniou-consulting.com> Signed-off-by: Tom Rini <trini@ti.com> Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
148 lines
3.4 KiB
C
148 lines
3.4 KiB
C
/*
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* (C) Copyright 2010
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* Texas Instruments, <www.ti.com>
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*
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* Aneesh V <aneesh@ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <spl.h>
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#include <asm/u-boot.h>
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#include <mmc.h>
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#include <version.h>
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#include <image.h>
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DECLARE_GLOBAL_DATA_PTR;
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static int mmc_load_image_raw(struct mmc *mmc, unsigned long sector)
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{
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unsigned long err;
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u32 image_size_sectors;
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struct image_header *header;
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header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
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sizeof(struct image_header));
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/* read image header to find the image size & load address */
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err = mmc->block_dev.block_read(0, sector, 1, header);
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if (err == 0)
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goto end;
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if (image_get_magic(header) != IH_MAGIC)
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return -1;
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spl_parse_image_header(header);
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/* convert size to sectors - round up */
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image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) /
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mmc->read_bl_len;
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/* Read the header too to avoid extra memcpy */
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err = mmc->block_dev.block_read(0, sector, image_size_sectors,
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(void *)spl_image.load_addr);
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end:
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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if (err == 0)
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printf("spl: mmc blk read err - %lu\n", err);
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#endif
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return (err == 0);
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}
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#ifdef CONFIG_SPL_OS_BOOT
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static int mmc_load_image_raw_os(struct mmc *mmc)
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{
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if (!mmc->block_dev.block_read(0,
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CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
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CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
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(void *)CONFIG_SYS_SPL_ARGS_ADDR)) {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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printf("mmc args blk read error\n");
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#endif
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return -1;
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}
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return mmc_load_image_raw(mmc, CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
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}
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#endif
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void spl_mmc_load_image(void)
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{
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struct mmc *mmc;
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int err;
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u32 boot_mode;
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mmc_initialize(gd->bd);
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/* We register only one device. So, the dev id is always 0 */
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mmc = find_mmc_device(0);
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if (!mmc) {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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puts("spl: mmc device not found!!\n");
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#endif
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hang();
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}
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err = mmc_init(mmc);
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if (err) {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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printf("spl: mmc init failed: err - %d\n", err);
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#endif
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hang();
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}
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boot_mode = spl_boot_mode();
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if (boot_mode == MMCSD_MODE_RAW) {
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debug("boot mode - RAW\n");
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#ifdef CONFIG_SPL_OS_BOOT
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if (spl_start_uboot() || mmc_load_image_raw_os(mmc))
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#endif
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err = mmc_load_image_raw(mmc,
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CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
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#ifdef CONFIG_SPL_FAT_SUPPORT
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} else if (boot_mode == MMCSD_MODE_FAT) {
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debug("boot mode - FAT\n");
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#ifdef CONFIG_SPL_OS_BOOT
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if (spl_start_uboot() || spl_load_image_fat_os(&mmc->block_dev,
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CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION))
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#endif
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err = spl_load_image_fat(&mmc->block_dev,
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CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION,
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CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME);
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#endif
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#ifdef CONFIG_SUPPORT_EMMC_BOOT
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} else if (boot_mode == MMCSD_MODE_EMMCBOOT) {
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/*
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* We need to check what the partition is configured to.
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* 1 and 2 match up to boot0 / boot1 and 7 is user data
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* which is the first physical partition (0).
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*/
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int part = (mmc->part_config >> 3) & PART_ACCESS_MASK;
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if (part == 7)
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part = 0;
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if (mmc_switch_part(0, part)) {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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puts("MMC partition switch failed\n");
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#endif
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hang();
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}
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#ifdef CONFIG_SPL_OS_BOOT
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if (spl_start_uboot() || mmc_load_image_raw_os(mmc))
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#endif
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err = mmc_load_image_raw(mmc,
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CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
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#endif
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} else {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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puts("spl: wrong MMC boot mode\n");
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#endif
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hang();
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}
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if (err)
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hang();
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}
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