/*
* Copyright (C) 2016 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <boot_rkimg.h>
#include <errno.h>
#include <fdt_support.h>
#include <image.h>
#include <malloc.h>
#include <mtd_blk.h>
#include <mp_boot.h>
#include <spl.h>
#include <spl_ab.h>
#include <linux/libfdt.h>
#ifndef CONFIG_SYS_BOOTM_LEN
#define CONFIG_SYS_BOOTM_LEN (64 << 20)
#endif
/**
* spl_fit_get_image_name(): By using the matching configuration subnode,
* retrieve the name of an image, specified by a property name and an index
* into that.
* @fit: Pointer to the FDT blob.
* @images: Offset of the /images subnode.
* @type: Name of the property within the configuration subnode.
* @index: Index into the list of strings in this property.
* @outname: Name of the image
*
* Return: 0 on success, or a negative error number
*/
static int spl_fit_get_image_name(const void *fit, int images,
const char *type, int index,
char **outname)
{
const char *name, *str;
__maybe_unused int node;
int conf_node;
int len, i;
conf_node = fit_find_config_node(fit);
if (conf_node < 0) {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
printf("No matching DT out of these options:\n");
for (node = fdt_first_subnode(fit, conf_node);
node >= 0;
node = fdt_next_subnode(fit, node)) {
name = fdt_getprop(fit, node, "description", &len);
printf(" %s\n", name);
}
#endif
return conf_node;
}
name = fdt_getprop(fit, conf_node, type, &len);
if (!name) {
debug("cannot find property '%s': %d\n", type, len);
return -EINVAL;
}
str = name;
for (i = 0; i < index; i++) {
str = strchr(str, '\0') + 1;
if (!str || (str - name >= len)) {
debug("no string for index %d\n", index);
return -E2BIG;
}
}
*outname = (char *)str;
return 0;
}
/**
* spl_fit_get_image_node(): By using the matching configuration subnode,
* retrieve the name of an image, specified by a property name and an index
* into that.
* @fit: Pointer to the FDT blob.
* @images: Offset of the /images subnode.
* @type: Name of the property within the configuration subnode.
* @index: Index into the list of strings in this property.
*
* Return: the node offset of the respective image node or a negative
* error number.
*/
static int spl_fit_get_image_node(const void *fit, int images,
const char *type, int index)
{
char *str;
int err;
int node;
err = spl_fit_get_image_name(fit, images, type, index, &str);
if (err)
return err;
debug("%s: '%s'\n", type, str);
node = fdt_subnode_offset(fit, images, str);
if (node < 0) {
debug("cannot find image node '%s': %d\n", str, node);
return -EINVAL;
}
return node;
}
static int get_aligned_image_offset(struct spl_load_info *info, int offset)
{
/*
* If it is a FS read, get the first address before offset which is
* aligned to ARCH_DMA_MINALIGN. If it is raw read return the
* block number to which offset belongs.
*/
if (info->filename)
return offset & ~(ARCH_DMA_MINALIGN - 1);
return offset / info->bl_len;
}
static int get_aligned_image_overhead(struct spl_load_info *info, int offset)
{
/*
* If it is a FS read, get the difference between the offset and
* the first address before offset which is aligned to
* ARCH_DMA_MINALIGN. If it is raw read return the offset within the
* block.
*/
if (info->filename)
return offset & (ARCH_DMA_MINALIGN - 1);
return offset % info->bl_len;
}
static int get_aligned_image_size(struct spl_load_info *info, int data_size,
int offset)
{
data_size = data_size + get_aligned_image_overhead(info, offset);
if (info->filename)
return data_size;
return (data_size + info->bl_len - 1) / info->bl_len;
}
/**
* spl_load_fit_image(): load the image described in a certain FIT node
* @info: points to information about the device to load data from
* @sector: the start sector of the FIT image on the device
* @fit: points to the flattened device tree blob describing the FIT
* image
* @base_offset: the beginning of the data area containing the actual
* image data, relative to the beginning of the FIT
* @node: offset of the DT node describing the image to load (relative
* to @fit)
* @image_info: will be filled with information about the loaded image
* If the FIT node does not contain a "load" (address) property,
* the image gets loaded to the address pointed to by the
* load_addr member in this struct.
*
* Return: 0 on success or a negative error number.
*/
static int spl_load_fit_image(struct spl_load_info *info, ulong sector,
void *fit, ulong base_offset, int node,
struct spl_image_info *image_info)
{
int offset;
size_t length;
int len;
ulong size;
ulong comp_addr, load_addr, load_ptr;
void *src;
ulong overhead;
int nr_sectors;
int align_len = ARCH_DMA_MINALIGN - 1;
uint8_t image_comp = -1, type = -1;
const void *data;
bool external_data = false;
if (IS_ENABLED(CONFIG_SPL_OS_BOOT) && IS_ENABLED(CONFIG_SPL_GZIP)) {
if (fit_image_get_comp(fit, node, &image_comp))
puts("Cannot get image compression format.\n");
else
debug("%s ", genimg_get_comp_name(image_comp));
if (fit_image_get_type(fit, node, &type))
puts("Cannot get image type.\n");
else
debug("%s ", genimg_get_type_name(type));
} else {
fit_image_get_comp(fit, node, &image_comp);
}
if (fit_image_get_load(fit, node, &load_addr))
load_addr = image_info->load_addr;
if (image_comp != IH_COMP_NONE && image_comp != IH_COMP_ZIMAGE) {
/* Empirically, 2MB is enough for U-Boot, tee and atf */
if (fit_image_get_comp_addr(fit, node, &comp_addr))
comp_addr = load_addr + FIT_MAX_SPL_IMAGE_SZ;
} else {
comp_addr = load_addr;
}
if (!fit_image_get_data_position(fit, node, &offset)) {
external_data = true;
} else if (!fit_image_get_data_offset(fit, node, &offset)) {
offset += base_offset;
external_data = true;
}
if (external_data) {
/* External data */
if (fit_image_get_data_size(fit, node, &len))
return -ENOENT;
load_ptr = (comp_addr + align_len) & ~align_len;
#if defined(CONFIG_ARCH_ROCKCHIP)
if ((load_ptr < CONFIG_SYS_SDRAM_BASE) ||
(load_ptr >= CONFIG_SYS_SDRAM_BASE + SDRAM_MAX_SIZE))
load_ptr = (ulong)memalign(ARCH_DMA_MINALIGN, len);
#endif
length = len;
overhead = get_aligned_image_overhead(info, offset);
nr_sectors = get_aligned_image_size(info, length, offset);
if (info->read(info,
sector + get_aligned_image_offset(info, offset),
nr_sectors, (void *)load_ptr) != nr_sectors)
return -EIO;
debug("External data: dst=%lx, offset=%x, size=%lx\n",
load_ptr, offset, (unsigned long)length);
src = (void *)load_ptr + overhead;
} else {
/* Embedded data */
if (fit_image_get_data(fit, node, &data, &length)) {
puts("Cannot get image data/size\n");
return -ENOENT;
}
debug("Embedded data: dst=%lx, size=%lx\n", load_addr,
(unsigned long)length);
src = (void *)data;
}
/* Check hashes and signature */
if (image_comp != IH_COMP_NONE && image_comp != IH_COMP_ZIMAGE)
printf("## Checking %s 0x%08lx (%s @0x%08lx) ... ",
fit_get_name(fit, node, NULL), load_addr,
(char *)fdt_getprop(fit, node, FIT_COMP_PROP, NULL),
(long)src);
else
printf("## Checking %s 0x%08lx ... ",
fit_get_name(fit, node, NULL), load_addr);
#ifdef CONFIG_FIT_SPL_PRINT
printf("\n");
fit_image_print(fit, node, "");
#endif
if (!fit_image_verify_with_data(fit, node,
src, length))
return -EPERM;
#ifdef CONFIG_SPL_FIT_IMAGE_POST_PROCESS
board_fit_image_post_process(fit, node, (ulong *)&load_addr,
(ulong **)&src, &length, info);
#endif
puts("OK\n");
if (IS_ENABLED(CONFIG_SPL_OS_BOOT) &&
IS_ENABLED(CONFIG_SPL_GZIP) &&
image_comp == IH_COMP_GZIP &&
type == IH_TYPE_KERNEL) {
size = length;
if (gunzip((void *)load_addr, CONFIG_SYS_BOOTM_LEN,
src, &size)) {
puts("Uncompressing error\n");
return -EIO;
}
length = size;
} else {
memcpy((void *)load_addr, src, length);
}
if (image_info) {
image_info->load_addr = load_addr;
image_info->size = length;
image_info->entry_point = fdt_getprop_u32(fit, node, "entry");
}
return 0;
}
static int spl_fit_append_fdt(struct spl_image_info *spl_image,
struct spl_load_info *info, ulong sector,
void *fit, int images, ulong base_offset)
{
struct spl_image_info image_info;
int node, ret;
/* Figure out which device tree the board wants to use */
node = spl_fit_get_image_node(fit, images, FIT_FDT_PROP, 0);
if (node < 0) {
debug("%s: cannot find FDT node\n", __func__);
return node;
}
/*
* Read the device tree and place it after the image.
* Align the destination address to ARCH_DMA_MINALIGN.
*/
image_info.load_addr = spl_image->load_addr + spl_image->size;
ret = spl_load_fit_image(info, sector, fit, base_offset, node,
&image_info);
if (ret < 0)
return ret;
/* Make the load-address of the FDT available for the SPL framework */
spl_image->fdt_addr = (void *)image_info.load_addr;
#if !CONFIG_IS_ENABLED(FIT_IMAGE_TINY)
/* Try to make space, so we can inject details on the loadables */
fdt_shrink_to_minimum(spl_image->fdt_addr, 8192);
#endif
/*
* If need, load kernel FDT right after U-Boot FDT.
*
* kernel FDT is for U-Boot if there is not valid one
* from images, ie: resource.img, boot.img or recovery.img.
*/
node = spl_fit_get_image_node(fit, images, FIT_FDT_PROP, 1);
if (node < 0) {
debug("%s: cannot find kernel FDT node\n", __func__);
/* attention: here return ret but not node */
return ret;
}
image_info.load_addr =
(ulong)spl_image->fdt_addr + fdt_totalsize(spl_image->fdt_addr);
ret = spl_load_fit_image(info, sector, fit, base_offset, node,
&image_info);
return ret;
}
static int spl_fit_record_loadable(const void *fit, int images, int index,
void *blob, struct spl_image_info *image)
{
int ret = 0;
#if !CONFIG_IS_ENABLED(FIT_IMAGE_TINY)
char *name;
int node;
ret = spl_fit_get_image_name(fit, images, "loadables",
index, &name);
if (ret < 0)
return ret;
node = spl_fit_get_image_node(fit, images, "loadables", index);
ret = fdt_record_loadable(blob, index, name, image->load_addr,
image->size, image->entry_point,
fdt_getprop(fit, node, "type", NULL),
fdt_getprop(fit, node, "os", NULL));
#endif
return ret;
}
static int spl_fit_image_get_os(const void *fit, int noffset, uint8_t *os)
{
#if CONFIG_IS_ENABLED(FIT_IMAGE_TINY)
return -ENOTSUPP;
#else
return fit_image_get_os(fit, noffset, os);
#endif
}
__weak int spl_fit_standalone_release(char *id, uintptr_t entry_point)
{
return 0;
}
static void *spl_fit_load_blob(struct spl_load_info *info,
ulong sector, void *fit_header,
int *base_offset)
{
int align_len = ARCH_DMA_MINALIGN - 1;
ulong count;
ulong size;
int sectors;
void *fit;
/*
* For FIT with external data, figure out where the external images
* start. This is the base for the data-offset properties in each
* image.
*/
size = fdt_totalsize(fit_header);
size = FIT_ALIGN(size);
*base_offset = FIT_ALIGN(size);
/*
* So far we only have one block of data from the FIT. Read the entire
* thing, including that first block, placing it so it finishes before
* where we will load the image.
*
* Note that we will load the image such that its first byte will be
* at the load address. Since that byte may be part-way through a
* block, we may load the image up to one block before the load
* address. So take account of that here by subtracting an addition
* block length from the FIT start position.
*
* In fact the FIT has its own load address, but we assume it cannot
* be before CONFIG_SYS_TEXT_BASE.
*
* For FIT with data embedded, data is loaded as part of FIT image.
* For FIT with external data, data is not loaded in this step.
*/
fit = (void *)((CONFIG_SYS_TEXT_BASE - size - info->bl_len -
align_len) & ~align_len);
sectors = get_aligned_image_size(info, size, 0);
count = info->read(info, sector, sectors, fit);
#ifdef CONFIG_MTD_BLK
mtd_blk_map_fit(info->dev, sector, fit);
#endif
debug("fit read sector %lx, sectors=%d, dst=%p, count=%lu\n",
sector, sectors, fit, count);
if (count == 0)
return NULL;
return fit;
}
#ifdef CONFIG_SPL_KERNEL_BOOT
#ifdef CONFIG_SPL_LIBDISK_SUPPORT
__weak const char *spl_kernel_partition(struct spl_image_info *spl,
struct spl_load_info *info)
{
return PART_BOOT;
}
#endif
static int spl_load_kernel_fit(struct spl_image_info *spl_image,
struct spl_load_info *info)
{
/*
* Never change the image order.
*
* Considering thunder-boot feature, there maybe asynchronous
* loading operation of these images and ramdisk is usually to
* be the last one.
*
* The .its content rule of kernel fit image follows U-Boot proper.
*/
const char *images[] = { FIT_FDT_PROP, FIT_KERNEL_PROP, FIT_RAMDISK_PROP, };
struct spl_image_info image_info;
char fit_header[info->bl_len];
int images_noffset;
int base_offset;
int sector;
int node, ret, i;
void *fit;
if (spl_image->next_stage != SPL_NEXT_STAGE_KERNEL)
return 0;
#ifdef CONFIG_SPL_LIBDISK_SUPPORT
const char *part_name = PART_BOOT;
disk_partition_t part_info;
part_name = spl_kernel_partition(spl_image, info);
if (part_get_info_by_name(info->dev, part_name, &part_info) <= 0) {
printf("%s: no partition\n", __func__);
return -EINVAL;
}
sector = part_info.start;
#else
sector = CONFIG_SPL_KERNEL_BOOT_SECTOR;
#endif
printf("Trying kernel at 0x%x sector from '%s' part\n", sector, part_name);
if (info->read(info, sector, 1, &fit_header) != 1) {
debug("%s: Failed to read header\n", __func__);
return -EIO;
}
if (image_get_magic((void *)&fit_header) != FDT_MAGIC) {
printf("%s: Not fit magic\n", __func__);
return -EINVAL;
}
fit = spl_fit_load_blob(info, sector, fit_header, &base_offset);
if (!fit) {
debug("%s: Cannot load blob\n", __func__);
return -ENODEV;
}
/* verify the configure node by keys, if required */
#ifdef CONFIG_SPL_FIT_SIGNATURE
int conf_noffset;
conf_noffset = fit_conf_get_node(fit, NULL);
if (conf_noffset <= 0) {
printf("No default config node\n");
return -EINVAL;
}
ret = fit_config_verify(fit, conf_noffset);
if (ret) {
printf("fit verify configure failed, ret=%d\n", ret);
return ret;
}
printf("\n");
#endif
images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
if (images_noffset < 0) {
debug("%s: Cannot find /images node: %d\n",
__func__, images_noffset);
return images_noffset;
}
for (i = 0; i < ARRAY_SIZE(images); i++) {
node = spl_fit_get_image_node(fit, images_noffset,
images[i], 0);
if (node < 0) {
debug("No image: %s\n", images[i]);
continue;
}
ret = spl_load_fit_image(info, sector, fit, base_offset,
node, &image_info);
if (ret)
return ret;
/* initial addr or entry point */
if (!strcmp(images[i], FIT_FDT_PROP)) {
spl_image->fdt_addr = (void *)image_info.load_addr;
#ifdef CONFIG_SPL_AB
char slot_suffix[3] = {0};
if (!spl_get_current_slot(info->dev, "misc", slot_suffix))
fdt_bootargs_append_ab((void *)image_info.load_addr, slot_suffix);
#endif
#ifdef CONFIG_SPL_MTD_SUPPORT
struct blk_desc *desc = info->dev;
if (desc->devnum == BLK_MTD_SPI_NAND)
fdt_bootargs_append((void *)image_info.load_addr, mtd_part_parse(desc));
#endif
} else if (!strcmp(images[i], FIT_KERNEL_PROP)) {
#if CONFIG_IS_ENABLED(OPTEE)
spl_image->entry_point_os = image_info.load_addr;
#endif
#if CONFIG_IS_ENABLED(ATF)
spl_image->entry_point_bl33 = image_info.load_addr;
#endif
}
}
debug("fdt_addr=0x%08lx, entry_point=0x%08lx, entry_point_os=0x%08lx\n",
(ulong)spl_image->fdt_addr,
spl_image->entry_point,
#if CONFIG_IS_ENABLED(OPTEE)
spl_image->entry_point_os);
#endif
#if CONFIG_IS_ENABLED(ATF)
spl_image->entry_point_bl33);
#endif
return 0;
}
#endif
static int spl_internal_load_simple_fit(struct spl_image_info *spl_image,
struct spl_load_info *info,
ulong sector, void *fit_header)
{
struct spl_image_info image_info;
char *desc;
int base_offset;
int images, ret;
int index = 0;
int node = -1;
void *fit;
fit = spl_fit_load_blob(info, sector, fit_header, &base_offset);
if (!fit) {
debug("%s: Cannot load blob\n", __func__);
return -1;
}
/* find the node holding the images information */
images = fdt_path_offset(fit, FIT_IMAGES_PATH);
if (images < 0) {
debug("%s: Cannot find /images node: %d\n", __func__, images);
return -1;
}
/* if board sigs verify required, check self */
if (fit_board_verify_required_sigs() &&
!IS_ENABLED(CONFIG_SPL_FIT_SIGNATURE)) {
printf("Verified-boot requires CONFIG_SPL_FIT_SIGNATURE enabled\n");
hang();
}
/* verify the configure node by keys, if required */
#ifdef CONFIG_SPL_FIT_SIGNATURE
int conf_noffset;
conf_noffset = fit_conf_get_node(fit, NULL);
if (conf_noffset <= 0) {
printf("No default config node\n");
return -EINVAL;
}
ret = fit_config_verify(fit, conf_noffset);
if (ret) {
printf("fit verify configure failed, ret=%d\n", ret);
return ret;
}
printf("\n");
#ifdef CONFIG_SPL_FIT_ROLLBACK_PROTECT
uint32_t this_index, min_index;
ret = fit_rollback_index_verify(fit, FIT_ROLLBACK_INDEX_SPL,
&this_index, &min_index);
if (ret) {
printf("fit failed to get rollback index, ret=%d\n", ret);
return ret;
} else if (this_index < min_index) {
printf("fit reject rollback: %d < %d(min)\n",
this_index, min_index);
return -EINVAL;
}
printf("rollback index: %d >= %d(min), OK\n", this_index, min_index);
#endif
#endif
/*
* If required to start the other core before load "loadables"
* firmwares, use the config "standalone" to load the other core's
* firmware, then start it.
* Normally, different cores' firmware is attach to the config
* "loadables" and load them together.
*/
for (; ; index++) {
node = spl_fit_get_image_node(fit, images,
FIT_STANDALONE_PROP, index);
if (node < 0)
break;
ret = spl_load_fit_image(info, sector, fit, base_offset,
node, &image_info);
if (ret)
return ret;
ret = fit_get_desc(fit, node, &desc);
if (ret)
return ret;
if (image_info.entry_point == FDT_ERROR)
image_info.entry_point = image_info.load_addr;
ret = spl_fit_standalone_release(desc, image_info.entry_point);
if (ret)
printf("%s: start standalone fail, ret=%d\n", desc, ret);
}
/* standalone is special one, continue to find others */
node = -1;
index = 0;
/*
* Find the U-Boot image using the following search order:
* - start at 'firmware' (e.g. an ARM Trusted Firmware)
* - fall back 'kernel' (e.g. a Falcon-mode OS boot
* - fall back to using the first 'loadables' entry
*/
if (node < 0)
node = spl_fit_get_image_node(fit, images, FIT_FIRMWARE_PROP,
0);
#ifdef CONFIG_SPL_OS_BOOT
if (node < 0)
node = spl_fit_get_image_node(fit, images, FIT_KERNEL_PROP, 0);
#endif
if (node < 0) {
debug("could not find firmware image, trying loadables...\n");
node = spl_fit_get_image_node(fit, images, "loadables", 0);
/*
* If we pick the U-Boot image from "loadables", start at
* the second image when later loading additional images.
*/
index = 1;
}
if (node < 0) {
debug("%s: Cannot find u-boot image node: %d\n",
__func__, node);
return -1;
}
/* Load the image and set up the spl_image structure */
ret = spl_load_fit_image(info, sector, fit, base_offset, node,
spl_image);
if (ret)
return ret;
/*
* For backward compatibility, we treat the first node that is
* as a U-Boot image, if no OS-type has been declared.
*/
if (!spl_fit_image_get_os(fit, node, &spl_image->os))
debug("Image OS is %s\n", genimg_get_os_name(spl_image->os));
#if !defined(CONFIG_SPL_OS_BOOT)
else
spl_image->os = IH_OS_U_BOOT;
#endif
/* Booting a next-stage U-Boot may require us to append the FDT. */
if (spl_image->os == IH_OS_U_BOOT) {
ret = spl_fit_append_fdt(spl_image, info, sector, fit,
images, base_offset);
if (ret < 0)
return ret;
}
/* Now check if there are more images for us to load */
for (; ; index++) {
uint8_t os_type = IH_OS_INVALID;
node = spl_fit_get_image_node(fit, images, "loadables", index);
if (node < 0)
break;
if (!spl_fit_image_get_os(fit, node, &os_type))
debug("Loadable is %s\n", genimg_get_os_name(os_type));
/* skip U-Boot ? */
if (spl_image->next_stage == SPL_NEXT_STAGE_KERNEL &&
os_type == IH_OS_U_BOOT)
continue;
ret = spl_load_fit_image(info, sector, fit, base_offset, node,
&image_info);
if (ret < 0)
return ret;
if (os_type == IH_OS_U_BOOT) {
#if CONFIG_IS_ENABLED(ATF)
spl_image->entry_point_bl33 = image_info.load_addr;
#elif CONFIG_IS_ENABLED(OPTEE)
spl_image->entry_point_os = image_info.load_addr;
#endif
ret = spl_fit_append_fdt(&image_info, info, sector,
fit, images, base_offset);
if (ret < 0)
return ret;
spl_image->fdt_addr = image_info.fdt_addr;
}
/*
* If the "firmware" image did not provide an entry point,
* use the first valid entry point from the loadables.
*/
if (spl_image->entry_point == FDT_ERROR &&
image_info.entry_point != FDT_ERROR)
spl_image->entry_point = image_info.entry_point;
/* Record our loadables into the FDT */
if (spl_image->fdt_addr)
spl_fit_record_loadable(fit, images, index,
spl_image->fdt_addr,
&image_info);
}
/*
* If a platform does not provide CONFIG_SYS_UBOOT_START, U-Boot's
* Makefile will set it to 0 and it will end up as the entry point
* here. What it actually means is: use the load address.
*/
if (spl_image->entry_point == FDT_ERROR || spl_image->entry_point == 0)
spl_image->entry_point = spl_image->load_addr;
return 0;
}
int spl_load_simple_fit(struct spl_image_info *spl_image,
struct spl_load_info *info, ulong sector, void *fit)
{
ulong sector_offs = sector;
int ret = -EINVAL;
int i;
#ifdef CONFIG_MP_BOOT
mpb_init_1(*info);
#endif
printf("Trying fit image at 0x%lx sector\n", sector_offs);
for (i = 0; i < CONFIG_SPL_FIT_IMAGE_MULTIPLE; i++) {
if (i > 0) {
sector_offs +=
i * ((CONFIG_SPL_FIT_IMAGE_KB << 10) / info->bl_len);
printf("Trying fit image at 0x%lx sector\n", sector_offs);
if (info->read(info, sector_offs, 1, fit) != 1) {
printf("IO error\n");
continue;
}
}
if (image_get_magic(fit) != FDT_MAGIC) {
printf("Not fit magic\n");
continue;
}
ret = spl_internal_load_simple_fit(spl_image, info,
sector_offs, fit);
if (!ret) {
#ifdef CONFIG_SPL_KERNEL_BOOT
ret = spl_load_kernel_fit(spl_image, info);
#endif
break;
}
}
#ifdef CONFIG_SPL_AB
/* If boot fail in spl, spl must decrease 1 and do_reset. */
if (ret)
return spl_ab_decrease_reset(info->dev);
/*
* If boot successfully, it is no need to do decrease
* and U-boot will always decrease 1.
* If in thunderboot process, always need to decrease 1.
*/
if (spl_image->next_stage == SPL_NEXT_STAGE_KERNEL)
spl_ab_decrease_tries(info->dev);
#endif
return ret;
}