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u-boot/common/spl/spl_mmc.c
Stephen Warren 7c4213f6a5 block: pass block dev not num to read/write/erase() 
This will allow the implementation to make use of data in the block_dev
structure beyond the base device number. This will be useful so that eMMC
block devices can encompass the HW partition ID rather than treating this
out-of-band. Equally, the existence of the priv field is crying out for
this patch to exist.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-01-13 21:05:18 -05:00

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6.3 KiB
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/*
* (C) Copyright 2010
* Texas Instruments, <www.ti.com>
*
* Aneesh V <aneesh@ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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>
DECLARE_GLOBAL_DATA_PTR;
static int mmc_load_image_raw_sector(struct mmc *mmc, unsigned long sector)
{
unsigned long count;
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 */
count = mmc->block_dev.block_read(&mmc->block_dev, sector, 1, header);
debug("read sector %lx, count=%lu\n", sector, count);
if (count == 0)
goto end;
if (image_get_magic(header) != IH_MAGIC) {
puts("bad magic\n");
return -1;
}
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 */
count = mmc->block_dev.block_read(&mmc->block_dev, sector,
image_size_sectors,
(void *)(ulong)spl_image.load_addr);
debug("read %x sectors to %x\n", image_size_sectors,
spl_image.load_addr);
end:
if (count == 0) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
puts("spl: mmc block read error\n");
#endif
return -1;
}
return 0;
}
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)
{
#ifdef CONFIG_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;
}
#ifdef CONFIG_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. error: %d\n", err);
#endif
return err;
}
return 0;
}
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
static int mmc_load_image_raw_partition(struct mmc *mmc, int partition)
{
disk_partition_t info;
int err;
err = get_partition_info(&mmc->block_dev, 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_SECTOR
return mmc_load_image_raw_sector(mmc, info.start +
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
#else
return mmc_load_image_raw_sector(mmc, info.start);
#endif
}
#else
#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION -1
static int mmc_load_image_raw_partition(struct mmc *mmc, int partition)
{
return -ENOSYS;
}
#endif
#ifdef CONFIG_SPL_OS_BOOT
static int mmc_load_image_raw_os(struct mmc *mmc)
{
unsigned long count;
count = mmc->block_dev.block_read(&mmc->block_dev,
CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR,
CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS,
(void *) CONFIG_SYS_SPL_ARGS_ADDR);
if (count == 0) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
puts("spl: mmc block read error\n");
#endif
return -1;
}
return mmc_load_image_raw_sector(mmc,
CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
}
#else
int spl_start_uboot(void)
{
return 1;
}
static int mmc_load_image_raw_os(struct mmc *mmc)
{
return -ENOSYS;
}
#endif
#ifdef CONFIG_SYS_MMCSD_FS_BOOT_PARTITION
int spl_mmc_do_fs_boot(struct mmc *mmc)
{
int err = -ENOSYS;
#ifdef CONFIG_SPL_FAT_SUPPORT
if (!spl_start_uboot()) {
err = spl_load_image_fat_os(&mmc->block_dev,
CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
if (!err)
return err;
}
#ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
err = spl_load_image_fat(&mmc->block_dev,
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(&mmc->block_dev,
CONFIG_SYS_MMCSD_FS_BOOT_PARTITION);
if (!err)
return err;
}
#ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
err = spl_load_image_ext(&mmc->block_dev,
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
int spl_mmc_do_fs_boot(struct mmc *mmc)
{
return -ENOSYS;
}
#endif
int spl_mmc_load_image(u32 boot_device)
{
struct mmc *mmc = NULL;
u32 boot_mode;
int err = 0;
__maybe_unused int part;
err = spl_mmc_find_device(&mmc, 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();
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;
err = mmc_switch_part(0, 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(mmc);
if (!err)
return err;
}
err = mmc_load_image_raw_partition(mmc,
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION);
if (!err)
return err;
#if defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR)
err = mmc_load_image_raw_sector(mmc,
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
if (!err)
return err;
#endif
break;
case MMCSD_MODE_FS:
debug("spl: mmc boot mode: fs\n");
err = spl_mmc_do_fs_boot(mmc);
if (!err)
return err;
break;
case MMCSD_MODE_UNDEFINED:
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
default:
puts("spl: mmc: wrong boot mode\n");
#endif
}
return err;
}
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