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u-boot/common/spl/spl_mmc.c
Alexandru Gagniuc 22eb1526d4 spl: Convert SYS_MMCSD_RAW_MODE_KERNEL_SECTOR to Kconfig 
Falcon mode is very useful in improving boot speed. A question that
Falcon mode asks is "Where do I look for the kernel". With MMC boot
media, the correct answer is CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR.
The scope of this patch is to move this to Kconfig.

It is possible for a system to support Falcon mode from NOR but not
MMC. In that case, mmc_load_image_raw_os() would not be used. To
address this, conditionally compile mmc_load_image_raw_os() when
SPL_FALCON_BOOT_MMCSD, instead of SPL_OS_BOOT.

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Move spl_start_uboot to its own guard in spl_mmc.c, rerun migration]
Signed-off-by: Tom Rini <trini@konsulko.com>
2022-01-21 14:01:35 -05:00

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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 <log.h>
#include <part.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 spl_boot_device *bootdev,
struct mmc *mmc,
ulong sector, struct image_header *header)
{
u32 image_offset_sectors;
u32 image_size_sectors;
unsigned long count;
u32 image_offset;
int ret;
ret = spl_parse_image_header(spl_image, bootdev, header);
if (ret)
return ret;
/* convert offset to sectors - round down */
image_offset_sectors = spl_image->offset / mmc->read_bl_len;
/* calculate remaining offset */
image_offset = spl_image->offset % mmc->read_bl_len;
/* 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_offset_sectors,
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;
if (image_offset)
memmove((void *)(ulong)spl_image->load_addr,
(void *)(ulong)spl_image->load_addr + image_offset,
spl_image->size);
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 unsigned long spl_mmc_raw_uboot_offset(int part)
{
#if IS_ENABLED(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR)
if (part == 0)
return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_DATA_PART_OFFSET;
#endif
return 0;
}
static __maybe_unused
int mmc_load_image_raw_sector(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev,
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 if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER)) {
struct spl_load_info load;
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_imx_container(spl_image, &load, sector);
} else {
ret = mmc_load_legacy(spl_image, bootdev, 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)
{
int err, mmc_dev;
mmc_dev = spl_mmc_get_device_index(boot_device);
if (mmc_dev < 0)
return mmc_dev;
#if CONFIG_IS_ENABLED(DM_MMC)
err = mmc_init_device(mmc_dev);
#else
err = mmc_initialize(NULL);
#endif /* DM_MMC */
if (err) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
printf("spl: could not initialize mmc. error: %d\n", err);
#endif
return err;
}
*mmcp = find_mmc_device(mmc_dev);
err = *mmcp ? 0 : -ENODEV;
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 spl_boot_device *bootdev,
struct mmc *mmc, int partition,
unsigned long sector)
{
struct disk_partition 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, bootdev, mmc, info.start + sector);
#else
return mmc_load_image_raw_sector(spl_image, bootdev, mmc, info.start);
#endif
}
#endif
#if CONFIG_IS_ENABLED(FALCON_BOOT_MMCSD)
static int mmc_load_image_raw_os(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev,
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, bootdev, mmc,
CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR);
if (ret)
return ret;
if (spl_image->os != IH_OS_LINUX && spl_image->os != IH_OS_TEE) {
puts("Expected image is not found. Trying to start U-boot\n");
return -ENOENT;
}
return 0;
}
#else
static int mmc_load_image_raw_os(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev,
struct mmc *mmc)
{
return -ENOSYS;
}
#endif
#ifndef CONFIG_SPL_OS_BOOT
int spl_start_uboot(void)
{
return 1;
}
#endif
#ifdef CONFIG_SYS_MMCSD_FS_BOOT_PARTITION
static int spl_mmc_do_fs_boot(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev,
struct mmc *mmc,
const char *filename)
{
int err = -ENOSYS;
#ifdef CONFIG_SPL_FS_FAT
if (!spl_start_uboot()) {
err = spl_load_image_fat_os(spl_image, bootdev, 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, bootdev, mmc_get_blk_desc(mmc),
CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
filename);
if (!err)
return err;
#endif
#endif
#ifdef CONFIG_SPL_FS_EXT4
if (!spl_start_uboot()) {
err = spl_load_image_ext_os(spl_image, bootdev, 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, bootdev, mmc_get_blk_desc(mmc),
CONFIG_SYS_MMCSD_FS_BOOT_PARTITION,
filename);
if (!err)
return err;
#endif
#endif
#if defined(CONFIG_SPL_FS_FAT) || defined(CONFIG_SPL_FS_EXT4)
err = -ENOENT;
#endif
return err;
}
#else
static int spl_mmc_do_fs_boot(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev,
struct mmc *mmc,
const char *filename)
{
return -ENOSYS;
}
#endif
u32 __weak spl_mmc_boot_mode(const u32 boot_device)
{
#if defined(CONFIG_SPL_FS_FAT) || defined(CONFIG_SPL_FS_EXT4)
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
int __weak spl_mmc_boot_partition(const u32 boot_device)
{
return CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION;
}
#endif
unsigned long __weak spl_mmc_get_uboot_raw_sector(struct mmc *mmc,
unsigned long raw_sect)
{
return raw_sect;
}
int default_spl_mmc_emmc_boot_partition(struct mmc *mmc)
{
int part;
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION
part = CONFIG_SYS_MMCSD_RAW_MODE_EMMC_BOOT_PARTITION;
#else
/*
* 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;
#endif
return part;
}
int __weak spl_mmc_emmc_boot_partition(struct mmc *mmc)
{
return default_spl_mmc_emmc_boot_partition(mmc);
}
int spl_mmc_load(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev,
const char *filename,
int raw_part,
unsigned long raw_sect)
{
static struct mmc *mmc;
u32 boot_mode;
int err = 0;
__maybe_unused int part = 0;
/* Perform peripheral init only once */
if (!mmc) {
err = spl_mmc_find_device(&mmc, bootdev->boot_device);
if (err)
return err;
err = mmc_init(mmc);
if (err) {
mmc = NULL;
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
printf("spl: mmc init failed with error: %d\n", err);
#endif
return err;
}
}
boot_mode = spl_mmc_boot_mode(bootdev->boot_device);
err = -EINVAL;
switch (boot_mode) {
case MMCSD_MODE_EMMCBOOT:
part = spl_mmc_emmc_boot_partition(mmc);
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, bootdev, mmc);
if (!err)
return err;
}
raw_sect = spl_mmc_get_uboot_raw_sector(mmc, raw_sect);
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION
err = mmc_load_image_raw_partition(spl_image, bootdev,
mmc, raw_part,
raw_sect);
if (!err)
return err;
#endif
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
err = mmc_load_image_raw_sector(spl_image, bootdev, mmc,
raw_sect + spl_mmc_raw_uboot_offset(part));
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, bootdev, mmc, filename);
if (!err)
return err;
break;
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
default:
puts("spl: mmc: wrong boot mode\n");
#endif
}
return err;
}
int spl_mmc_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
return spl_mmc_load(spl_image, bootdev,
#ifdef CONFIG_SPL_FS_LOAD_PAYLOAD_NAME
CONFIG_SPL_FS_LOAD_PAYLOAD_NAME,
#else
NULL,
#endif
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
spl_mmc_boot_partition(bootdev->boot_device),
#else
0,
#endif
#ifdef CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR);
#else
0);
#endif
}
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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