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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2018-2021 NXP
*/
#include <common.h>
#include <stdlib.h>
#include <errno.h>
#include <log.h>
#include <spl.h>
#include <asm/mach-imx/image.h>
#ifdef CONFIG_AHAB_BOOT
#include <asm/mach-imx/ahab.h>
#endif
static struct boot_img_t *read_auth_image(struct spl_image_info *spl_image,
struct spl_load_info *info,
struct container_hdr *container,
int image_index,
u32 container_sector)
{
struct boot_img_t *images;
ulong sector;
u32 sectors;
if (image_index > container->num_images) {
debug("Invalid image number\n");
return NULL;
}
images = (struct boot_img_t *)((u8 *)container +
sizeof(struct container_hdr));
if (images[image_index].offset % info->bl_len) {
printf("%s: image%d offset not aligned to %u\n",
__func__, image_index, info->bl_len);
return NULL;
}
sectors = roundup(images[image_index].size, info->bl_len) /
info->bl_len;
sector = images[image_index].offset / info->bl_len +
container_sector;
debug("%s: container: %p sector: %lu sectors: %u\n", __func__,
container, sector, sectors);
if (info->read(info, sector, sectors,
(void *)images[image_index].entry) != sectors) {
printf("%s wrong\n", __func__);
return NULL;
}
#ifdef CONFIG_AHAB_BOOT
if (ahab_verify_cntr_image(&images[image_index], image_index))
return NULL;
#endif
return &images[image_index];
}
static int read_auth_container(struct spl_image_info *spl_image,
struct spl_load_info *info, ulong sector)
{
struct container_hdr *container = NULL;
u16 length;
u32 sectors;
int i, size, ret = 0;
size = roundup(CONTAINER_HDR_ALIGNMENT, info->bl_len);
sectors = size / info->bl_len;
/*
* It will not override the ATF code, so safe to use it here,
* no need malloc
*/
container = malloc(size);
if (!container)
return -ENOMEM;
debug("%s: container: %p sector: %lu sectors: %u\n", __func__,
container, sector, sectors);
if (info->read(info, sector, sectors, container) != sectors) {
ret = -EIO;
goto end;
}
if (container->tag != 0x87 && container->version != 0x0) {
printf("Wrong container header");
ret = -ENOENT;
goto end;
}
if (!container->num_images) {
printf("Wrong container, no image found");
ret = -ENOENT;
goto end;
}
length = container->length_lsb + (container->length_msb << 8);
debug("Container length %u\n", length);
if (length > CONTAINER_HDR_ALIGNMENT) {
size = roundup(length, info->bl_len);
sectors = size / info->bl_len;
free(container);
container = malloc(size);
if (!container)
return -ENOMEM;
debug("%s: container: %p sector: %lu sectors: %u\n",
__func__, container, sector, sectors);
if (info->read(info, sector, sectors, container) !=
sectors) {
ret = -EIO;
goto end;
}
}
#ifdef CONFIG_AHAB_BOOT
ret = ahab_auth_cntr_hdr(container, length);
if (ret)
goto end_auth;
#endif
for (i = 0; i < container->num_images; i++) {
struct boot_img_t *image = read_auth_image(spl_image, info,
container, i,
sector);
if (!image) {
ret = -EINVAL;
goto end_auth;
}
if (i == 0) {
spl_image->load_addr = image->dst;
spl_image->entry_point = image->entry;
}
}
end_auth:
#ifdef CONFIG_AHAB_BOOT
ahab_auth_release();
#endif
end:
free(container);
return ret;
}
int spl_load_imx_container(struct spl_image_info *spl_image,
struct spl_load_info *info, ulong sector)
{
return read_auth_container(spl_image, info, sector);
}
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