mirror of
https://github.com/AsahiLinux/u-boot
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448 lines
10 KiB
C
448 lines
10 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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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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#include <common.h>
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#include <dm.h>
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#include <log.h>
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#include <part.h>
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#include <spl.h>
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#include <linux/compiler.h>
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#include <errno.h>
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#include <asm/u-boot.h>
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#include <errno.h>
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#include <mmc.h>
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#include <image.h>
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static int mmc_load_legacy(struct spl_image_info *spl_image, struct mmc *mmc,
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ulong sector, struct image_header *header)
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{
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u32 image_size_sectors;
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unsigned long count;
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int ret;
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ret = spl_parse_image_header(spl_image, header);
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if (ret)
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return ret;
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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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count = blk_dread(mmc_get_blk_desc(mmc), sector, image_size_sectors,
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(void *)(ulong)spl_image->load_addr);
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debug("read %x sectors to %lx\n", image_size_sectors,
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spl_image->load_addr);
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if (count != image_size_sectors)
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return -EIO;
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return 0;
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}
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static ulong h_spl_load_read(struct spl_load_info *load, ulong sector,
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ulong count, void *buf)
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{
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struct mmc *mmc = load->dev;
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return blk_dread(mmc_get_blk_desc(mmc), sector, count, buf);
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}
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static __maybe_unused unsigned long spl_mmc_raw_uboot_offset(int part)
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{
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#if IS_ENABLED(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR)
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if (part == 0)
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return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET;
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#endif
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return 0;
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}
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static __maybe_unused
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int mmc_load_image_raw_sector(struct spl_image_info *spl_image,
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struct mmc *mmc, unsigned long sector)
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{
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unsigned long count;
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struct image_header *header;
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struct blk_desc *bd = mmc_get_blk_desc(mmc);
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int ret = 0;
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header = spl_get_load_buffer(-sizeof(*header), bd->blksz);
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/* read image header to find the image size & load address */
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count = blk_dread(bd, sector, 1, header);
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debug("hdr read sector %lx, count=%lu\n", sector, count);
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if (count == 0) {
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ret = -EIO;
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goto end;
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}
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if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
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image_get_magic(header) == FDT_MAGIC) {
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struct spl_load_info load;
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debug("Found FIT\n");
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load.dev = mmc;
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load.priv = NULL;
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load.filename = NULL;
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load.bl_len = mmc->read_bl_len;
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load.read = h_spl_load_read;
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ret = spl_load_simple_fit(spl_image, &load, sector, header);
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} else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER)) {
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struct spl_load_info load;
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load.dev = mmc;
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load.priv = NULL;
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load.filename = NULL;
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load.bl_len = mmc->read_bl_len;
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load.read = h_spl_load_read;
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ret = spl_load_imx_container(spl_image, &load, sector);
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} else {
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ret = mmc_load_legacy(spl_image, mmc, sector, header);
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}
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end:
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if (ret) {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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puts("mmc_load_image_raw_sector: mmc block read error\n");
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#endif
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return -1;
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}
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return 0;
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}
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static int spl_mmc_get_device_index(u32 boot_device)
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{
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switch (boot_device) {
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case BOOT_DEVICE_MMC1:
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return 0;
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case BOOT_DEVICE_MMC2:
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case BOOT_DEVICE_MMC2_2:
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return 1;
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}
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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printf("spl: unsupported mmc boot device.\n");
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#endif
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return -ENODEV;
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}
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static int spl_mmc_find_device(struct mmc **mmcp, u32 boot_device)
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{
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int err, mmc_dev;
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mmc_dev = spl_mmc_get_device_index(boot_device);
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if (mmc_dev < 0)
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return mmc_dev;
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#if CONFIG_IS_ENABLED(DM_MMC)
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err = mmc_init_device(mmc_dev);
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#else
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err = mmc_initialize(NULL);
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#endif /* DM_MMC */
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if (err) {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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printf("spl: could not initialize mmc. error: %d\n", err);
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#endif
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return err;
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}
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*mmcp = find_mmc_device(mmc_dev);
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err = *mmcp ? 0 : -ENODEV;
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if (err) {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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printf("spl: could not find mmc device %d. error: %d\n",
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mmc_dev, err);
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#endif
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return err;
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}
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return 0;
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}
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#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
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static int mmc_load_image_raw_partition(struct spl_image_info *spl_image,
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struct mmc *mmc, int partition,
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unsigned long sector)
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{
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struct disk_partition info;
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int err;
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#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
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int type_part;
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/* Only support MBR so DOS_ENTRY_NUMBERS */
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for (type_part = 1; type_part <= DOS_ENTRY_NUMBERS; type_part++) {
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err = part_get_info(mmc_get_blk_desc(mmc), type_part, &info);
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if (err)
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continue;
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if (info.sys_ind ==
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CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE) {
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partition = type_part;
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break;
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}
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}
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#endif
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err = part_get_info(mmc_get_blk_desc(mmc), partition, &info);
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if (err) {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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puts("spl: partition error\n");
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#endif
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return -1;
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}
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#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
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return mmc_load_image_raw_sector(spl_image, mmc, info.start + sector);
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#else
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return mmc_load_image_raw_sector(spl_image, mmc, info.start);
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#endif
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}
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#endif
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#ifdef CONFIG_SPL_OS_BOOT
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static int mmc_load_image_raw_os(struct spl_image_info *spl_image,
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struct mmc *mmc)
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{
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int ret;
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#if defined(CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR)
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unsigned long count;
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count = blk_dread(mmc_get_blk_desc(mmc),
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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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if (count != CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS) {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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puts("mmc_load_image_raw_os: mmc block read error\n");
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#endif
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return -1;
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}
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#endif /* CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR */
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ret = mmc_load_image_raw_sector(spl_image, mmc,
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CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
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if (ret)
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return ret;
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if (spl_image->os != IH_OS_LINUX) {
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puts("Expected Linux image is not found. Trying to start U-boot\n");
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return -ENOENT;
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}
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return 0;
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}
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#else
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int spl_start_uboot(void)
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{
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return 1;
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}
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static int mmc_load_image_raw_os(struct spl_image_info *spl_image,
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struct mmc *mmc)
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{
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return -ENOSYS;
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}
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#endif
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#ifdef CONFIG_SYS_MMCSD_FS_BOOT_PARTITION
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static int spl_mmc_do_fs_boot(struct spl_image_info *spl_image, struct mmc *mmc,
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const char *filename)
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{
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int err = -ENOSYS;
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#ifdef CONFIG_SPL_FS_FAT
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if (!spl_start_uboot()) {
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err = spl_load_image_fat_os(spl_image, mmc_get_blk_desc(mmc),
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CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
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if (!err)
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return err;
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}
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#ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
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err = spl_load_image_fat(spl_image, mmc_get_blk_desc(mmc),
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CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
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filename);
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if (!err)
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return err;
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#endif
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#endif
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#ifdef CONFIG_SPL_FS_EXT4
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if (!spl_start_uboot()) {
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err = spl_load_image_ext_os(spl_image, mmc_get_blk_desc(mmc),
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CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
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if (!err)
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return err;
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}
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#ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
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err = spl_load_image_ext(spl_image, mmc_get_blk_desc(mmc),
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CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
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filename);
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if (!err)
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return err;
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#endif
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#endif
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#if defined(CONFIG_SPL_FS_FAT) || defined(CONFIG_SPL_FS_EXT4)
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err = -ENOENT;
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#endif
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return err;
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}
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#else
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static int spl_mmc_do_fs_boot(struct spl_image_info *spl_image, struct mmc *mmc,
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const char *filename)
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{
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return -ENOSYS;
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}
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#endif
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u32 __weak spl_mmc_boot_mode(const u32 boot_device)
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{
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#if defined(CONFIG_SPL_FS_FAT) || defined(CONFIG_SPL_FS_EXT4)
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return MMCSD_MODE_FS;
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#elif defined(CONFIG_SUPPORT_EMMC_BOOT)
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return MMCSD_MODE_EMMCBOOT;
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#else
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return MMCSD_MODE_RAW;
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#endif
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}
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#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
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int __weak spl_mmc_boot_partition(const u32 boot_device)
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{
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return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION;
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}
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#endif
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unsigned long __weak spl_mmc_get_uboot_raw_sector(struct mmc *mmc,
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unsigned long raw_sect)
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{
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return raw_sect;
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}
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int spl_mmc_load(struct spl_image_info *spl_image,
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struct spl_boot_device *bootdev,
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const char *filename,
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int raw_part,
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unsigned long raw_sect)
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{
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static struct mmc *mmc;
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u32 boot_mode;
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int err = 0;
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__maybe_unused int part = 0;
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/* Perform peripheral init only once */
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if (!mmc) {
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err = spl_mmc_find_device(&mmc, bootdev->boot_device);
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if (err)
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return err;
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err = mmc_init(mmc);
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if (err) {
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mmc = NULL;
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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printf("spl: mmc init failed with error: %d\n", err);
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#endif
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return err;
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}
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}
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boot_mode = spl_mmc_boot_mode(bootdev->boot_device);
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err = -EINVAL;
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switch (boot_mode) {
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case MMCSD_MODE_EMMCBOOT:
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#ifdef CONFIG_SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION
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part = CONFIG_SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION;
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#else
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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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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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#endif
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if (CONFIG_IS_ENABLED(MMC_TINY))
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err = mmc_switch_part(mmc, part);
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else
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err = blk_dselect_hwpart(mmc_get_blk_desc(mmc), part);
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if (err) {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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puts("spl: mmc partition switch failed\n");
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#endif
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return err;
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}
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/* Fall through */
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case MMCSD_MODE_RAW:
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debug("spl: mmc boot mode: raw\n");
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if (!spl_start_uboot()) {
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err = mmc_load_image_raw_os(spl_image, mmc);
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if (!err)
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return err;
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}
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raw_sect = spl_mmc_get_uboot_raw_sector(mmc, raw_sect);
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#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
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err = mmc_load_image_raw_partition(spl_image, mmc, raw_part,
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raw_sect);
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if (!err)
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return err;
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#endif
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#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
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err = mmc_load_image_raw_sector(spl_image, mmc,
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raw_sect + spl_mmc_raw_uboot_offset(part));
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if (!err)
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return err;
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#endif
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/* If RAW mode fails, try FS mode. */
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case MMCSD_MODE_FS:
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debug("spl: mmc boot mode: fs\n");
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err = spl_mmc_do_fs_boot(spl_image, mmc, filename);
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if (!err)
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return err;
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break;
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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default:
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puts("spl: mmc: wrong boot mode\n");
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#endif
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}
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return err;
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}
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int spl_mmc_load_image(struct spl_image_info *spl_image,
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struct spl_boot_device *bootdev)
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{
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return spl_mmc_load(spl_image, bootdev,
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#ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
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CONFIG_SPL_FS_LOAD_PAYLOAD_NAME,
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#else
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NULL,
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#endif
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#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
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spl_mmc_boot_partition(bootdev->boot_device),
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#else
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0,
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#endif
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#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR
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CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
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#else
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0);
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#endif
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}
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SPL_LOAD_IMAGE_METHOD("MMC1", 0, BOOT_DEVICE_MMC1, spl_mmc_load_image);
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SPL_LOAD_IMAGE_METHOD("MMC2", 0, BOOT_DEVICE_MMC2, spl_mmc_load_image);
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SPL_LOAD_IMAGE_METHOD("MMC2_2", 0, BOOT_DEVICE_MMC2_2, spl_mmc_load_image);
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