forked from rrcarlosr/Jetpack
348 lines
7.3 KiB
C
348 lines
7.3 KiB
C
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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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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.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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DECLARE_GLOBAL_DATA_PTR;
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static int mmc_load_legacy(struct mmc *mmc, ulong sector,
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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(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 %x\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 int mmc_load_image_raw_sector(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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int ret = 0;
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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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count = blk_dread(mmc_get_blk_desc(mmc), 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(&load, sector, header);
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} else {
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ret = mmc_load_legacy(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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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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#ifdef CONFIG_DM_MMC
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struct udevice *dev;
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#endif
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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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err = mmc_initialize(NULL);
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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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#ifdef CONFIG_DM_MMC
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err = uclass_get_device(UCLASS_MMC, mmc_dev, &dev);
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if (!err)
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*mmcp = mmc_get_mmc_dev(dev);
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#else
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*mmcp = find_mmc_device(mmc_dev);
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err = *mmcp ? 0 : -ENODEV;
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#endif
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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. error: %d\n", 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_PARTITION
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static int mmc_load_image_raw_partition(struct mmc *mmc, int partition)
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{
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disk_partition_t info;
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int err;
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err = part_get_info(&mmc->block_dev, 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_SECTOR
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return mmc_load_image_raw_sector(mmc, info.start +
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CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
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#else
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return mmc_load_image_raw_sector(mmc, info.start);
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#endif
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}
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#else
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#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION -1
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static int mmc_load_image_raw_partition(struct mmc *mmc, int partition)
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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_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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unsigned long count;
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int ret;
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count = mmc->block_dev.block_read(&mmc->block_dev,
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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 == 0) {
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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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ret = mmc_load_image_raw_sector(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 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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int spl_mmc_do_fs_boot(struct mmc *mmc)
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{
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int err = -ENOSYS;
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#ifdef CONFIG_SPL_FAT_SUPPORT
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if (!spl_start_uboot()) {
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err = spl_load_image_fat_os(&mmc->block_dev,
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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(&mmc->block_dev,
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CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
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CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
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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_EXT_SUPPORT
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if (!spl_start_uboot()) {
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err = spl_load_image_ext_os(&mmc->block_dev,
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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(&mmc->block_dev,
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CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
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CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
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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_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT)
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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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int spl_mmc_do_fs_boot(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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int spl_mmc_load_image(u32 boot_device)
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{
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struct mmc *mmc = NULL;
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u32 boot_mode;
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int err = 0;
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__maybe_unused int part;
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err = spl_mmc_find_device(&mmc, 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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#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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boot_mode = spl_boot_mode(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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/*
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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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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(mmc);
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if (!err)
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return err;
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}
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err = mmc_load_image_raw_partition(mmc,
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CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
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if (!err)
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return err;
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#if defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR)
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err = mmc_load_image_raw_sector(mmc,
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CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
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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(mmc);
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if (!err)
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return err;
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break;
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case MMCSD_MODE_UNDEFINED:
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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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