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u-boot-brain/common/spl/spl_mmc.c
Alex Kiernan aa608b6c99 spl: mmc: Report device number when we fail 
If we fail to find the MMC boot device, report the number of the one
we were looking for in the error to aid diagnosis.

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
2018-09-30 13:00:34 -04:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2010
* Texas Instruments, <www.ti.com>
*
* Aneesh V <aneesh@ti.com>
*/
#include <common.h>
#include <dm.h>
#include <spl.h>
#include <linux/compiler.h>
#include <errno.h>
#include <asm/u-boot.h>
#include <errno.h>
#include <mmc.h>
#include <image.h>
static int mmc_load_legacy(struct spl_image_info *spl_image, struct mmc *mmc,
ulong sector, struct image_header *header)
{
u32 image_size_sectors;
unsigned long count;
int ret;
ret = spl_parse_image_header(spl_image, header);
if (ret)
return ret;
/* 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 */
count = blk_dread(mmc_get_blk_desc(mmc), sector, image_size_sectors,
(void *)(ulong)spl_image->load_addr);
debug("read %x sectors to %lx\n", image_size_sectors,
spl_image->load_addr);
if (count != image_size_sectors)
return -EIO;
return 0;
}
static ulong h_spl_load_read(struct spl_load_info *load, ulong sector,
ulong count, void *buf)
{
struct mmc *mmc = load->dev;
return blk_dread(mmc_get_blk_desc(mmc), sector, count, buf);
}
static __maybe_unused
int mmc_load_image_raw_sector(struct spl_image_info *spl_image,
struct mmc *mmc, unsigned long sector)
{
unsigned long count;
struct image_header *header;
struct blk_desc *bd = mmc_get_blk_desc(mmc);
int ret = 0;
header = spl_get_load_buffer(-sizeof(*header), bd->blksz);
/* read image header to find the image size & load address */
count = blk_dread(bd, sector, 1, header);
debug("hdr read sector %lx, count=%lu\n", sector, count);
if (count == 0) {
ret = -EIO;
goto end;
}
if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
image_get_magic(header) == FDT_MAGIC) {
struct spl_load_info load;
debug("Found FIT\n");
load.dev = mmc;
load.priv = NULL;
load.filename = NULL;
load.bl_len = mmc->read_bl_len;
load.read = h_spl_load_read;
ret = spl_load_simple_fit(spl_image, &load, sector, header);
} else {
ret = mmc_load_legacy(spl_image, mmc, sector, header);
}
end:
if (ret) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
puts("mmc_load_image_raw_sector: mmc block read error\n");
#endif
return -1;
}
return 0;
}
static int spl_mmc_get_device_index(u32 boot_device)
{
switch (boot_device) {
case BOOT_DEVICE_MMC1:
return 0;
case BOOT_DEVICE_MMC2:
case BOOT_DEVICE_MMC2_2:
return 1;
}
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
printf("spl: unsupported mmc boot device.\n");
#endif
return -ENODEV;
}
static int spl_mmc_find_device(struct mmc **mmcp, u32 boot_device)
{
#if CONFIG_IS_ENABLED(DM_MMC)
struct udevice *dev;
#endif
int err, mmc_dev;
mmc_dev = spl_mmc_get_device_index(boot_device);
if (mmc_dev < 0)
return mmc_dev;
err = mmc_initialize(NULL);
if (err) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
printf("spl: could not initialize mmc. error: %d\n", err);
#endif
return err;
}
#if CONFIG_IS_ENABLED(DM_MMC)
err = uclass_get_device(UCLASS_MMC, mmc_dev, &dev);
if (!err)
*mmcp = mmc_get_mmc_dev(dev);
#else
*mmcp = find_mmc_device(mmc_dev);
err = *mmcp ? 0 : -ENODEV;
#endif
if (err) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
printf("spl: could not find mmc device %d. error: %d\n",
mmc_dev, err);
#endif
return err;
}
return 0;
}
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
static int mmc_load_image_raw_partition(struct spl_image_info *spl_image,
struct mmc *mmc, int partition)
{
disk_partition_t info;
int err;
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION_TYPE
int type_part;
/* Only support MBR so DOS_ENTRY_NUMBERS */
for (type_part = 1; type_part <= DOS_ENTRY_NUMBERS; type_part++) {
err = part_get_info(mmc_get_blk_desc(mmc), type_part, &info);
if (err)
continue;
if (info.sys_ind ==
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION_TYPE) {
partition = type_part;
break;
}
}
#endif
err = part_get_info(mmc_get_blk_desc(mmc), partition, &info);
if (err) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
puts("spl: partition error\n");
#endif
return -1;
}
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
return mmc_load_image_raw_sector(spl_image, mmc,
info.start + CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
#else
return mmc_load_image_raw_sector(spl_image, mmc, info.start);
#endif
}
#endif
#ifdef CONFIG_SPL_OS_BOOT
static int mmc_load_image_raw_os(struct spl_image_info *spl_image,
struct mmc *mmc)
{
int ret;
#if defined(CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR)
unsigned long count;
count = blk_dread(mmc_get_blk_desc(mmc),
CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
(void *) CONFIG_SYS_SPL_ARGS_ADDR);
if (count != CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
puts("mmc_load_image_raw_os: mmc block read error\n");
#endif
return -1;
}
#endif /* CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR */
ret = mmc_load_image_raw_sector(spl_image, mmc,
CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
if (ret)
return ret;
if (spl_image->os != IH_OS_LINUX) {
puts("Expected Linux image is not found. Trying to start U-boot\n");
return -ENOENT;
}
return 0;
}
#else
int spl_start_uboot(void)
{
return 1;
}
static int mmc_load_image_raw_os(struct spl_image_info *spl_image,
struct mmc *mmc)
{
return -ENOSYS;
}
#endif
#ifdef CONFIG_SYS_MMCSD_FS_BOOT_PARTITION
static int spl_mmc_do_fs_boot(struct spl_image_info *spl_image, struct mmc *mmc)
{
int err = -ENOSYS;
#ifdef CONFIG_SPL_FAT_SUPPORT
if (!spl_start_uboot()) {
err = spl_load_image_fat_os(spl_image, mmc_get_blk_desc(mmc),
CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
if (!err)
return err;
}
#ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
err = spl_load_image_fat(spl_image, mmc_get_blk_desc(mmc),
CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
if (!err)
return err;
#endif
#endif
#ifdef CONFIG_SPL_EXT_SUPPORT
if (!spl_start_uboot()) {
err = spl_load_image_ext_os(spl_image, mmc_get_blk_desc(mmc),
CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
if (!err)
return err;
}
#ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
err = spl_load_image_ext(spl_image, mmc_get_blk_desc(mmc),
CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
CONFIG_SPL_FS_LOAD_PAYLOAD_NAME);
if (!err)
return err;
#endif
#endif
#if defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT)
err = -ENOENT;
#endif
return err;
}
#else
static int spl_mmc_do_fs_boot(struct spl_image_info *spl_image, struct mmc *mmc)
{
return -ENOSYS;
}
#endif
u32 __weak spl_boot_mode(const u32 boot_device)
{
#if defined(CONFIG_SPL_FAT_SUPPORT) || defined(CONFIG_SPL_EXT_SUPPORT)
return MMCSD_MODE_FS;
#elif defined(CONFIG_SUPPORT_EMMC_BOOT)
return MMCSD_MODE_EMMCBOOT;
#else
return MMCSD_MODE_RAW;
#endif
}
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
__weak
int spl_boot_partition(const u32 boot_device)
{
return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION;
}
#endif
int spl_mmc_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
struct mmc *mmc = NULL;
u32 boot_mode;
int err = 0;
__maybe_unused int part;
err = spl_mmc_find_device(&mmc, bootdev->boot_device);
if (err)
return err;
err = mmc_init(mmc);
if (err) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
printf("spl: mmc init failed with error: %d\n", err);
#endif
return err;
}
boot_mode = spl_boot_mode(bootdev->boot_device);
err = -EINVAL;
switch (boot_mode) {
case MMCSD_MODE_EMMCBOOT:
/*
* We need to check what the partition is configured to.
* 1 and 2 match up to boot0 / boot1 and 7 is user data
* which is the first physical partition (0).
*/
part = (mmc->part_config >> 3) & PART_ACCESS_MASK;
if (part == 7)
part = 0;
if (CONFIG_IS_ENABLED(MMC_TINY))
err = mmc_switch_part(mmc, part);
else
err = blk_dselect_hwpart(mmc_get_blk_desc(mmc), part);
if (err) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
puts("spl: mmc partition switch failed\n");
#endif
return err;
}
/* Fall through */
case MMCSD_MODE_RAW:
debug("spl: mmc boot mode: raw\n");
if (!spl_start_uboot()) {
err = mmc_load_image_raw_os(spl_image, mmc);
if (!err)
return err;
}
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
err = spl_boot_partition(bootdev->boot_device);
if (!err)
return err;
err = mmc_load_image_raw_partition(spl_image, mmc, err);
if (!err)
return err;
#endif
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
err = mmc_load_image_raw_sector(spl_image, mmc,
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
if (!err)
return err;
#endif
/* If RAW mode fails, try FS mode. */
case MMCSD_MODE_FS:
debug("spl: mmc boot mode: fs\n");
err = spl_mmc_do_fs_boot(spl_image, mmc);
if (!err)
return err;
break;
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
default:
puts("spl: mmc: wrong boot mode\n");
#endif
}
return err;
}
SPL_LOAD_IMAGE_METHOD("MMC1", 0, BOOT_DEVICE_MMC1, spl_mmc_load_image);
SPL_LOAD_IMAGE_METHOD("MMC2", 0, BOOT_DEVICE_MMC2, spl_mmc_load_image);
SPL_LOAD_IMAGE_METHOD("MMC2_2", 0, BOOT_DEVICE_MMC2_2, spl_mmc_load_image);
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