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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2018-2019 NXP
*/
#include <common.h>
#include <errno.h>
#include <spl.h>
#include <asm/arch/image.h>
#include <asm/arch/sci/sci.h>
#define SEC_SECURE_RAM_BASE 0x31800000UL
#define SEC_SECURE_RAM_END_BASE (SEC_SECURE_RAM_BASE + 0xFFFFUL)
#define SECO_LOCAL_SEC_SEC_SECURE_RAM_BASE 0x60000000UL
#define SECO_PT 2U
#ifdef CONFIG_AHAB_BOOT
static int authenticate_image(struct boot_img_t *img, int image_index)
{
sc_faddr_t start, end;
sc_rm_mr_t mr;
int err;
int ret = 0;
debug("img %d, dst 0x%llx, src 0x%x, size 0x%x\n",
image_index, img->dst, img->offset, img->size);
/* Find the memreg and set permission for seco pt */
err = sc_rm_find_memreg(-1, &mr,
img->dst & ~(CONFIG_SYS_CACHELINE_SIZE - 1),
ALIGN(img->dst + img->size, CONFIG_SYS_CACHELINE_SIZE) - 1);
if (err) {
printf("can't find memreg for image: %d, err %d\n",
image_index, err);
return -ENOMEM;
}
err = sc_rm_get_memreg_info(-1, mr, &start, &end);
if (!err)
debug("memreg %u 0x%llx -- 0x%llx\n", mr, start, end);
err = sc_rm_set_memreg_permissions(-1, mr,
SECO_PT, SC_RM_PERM_FULL);
if (err) {
printf("set permission failed for img %d, error %d\n",
image_index, err);
return -EPERM;
}
err = sc_seco_authenticate(-1, SC_MISC_VERIFY_IMAGE,
1 << image_index);
if (err) {
printf("authenticate img %d failed, return %d\n",
image_index, err);
ret = -EIO;
}
err = sc_rm_set_memreg_permissions(-1, mr,
SECO_PT, SC_RM_PERM_NONE);
if (err) {
printf("remove permission failed for img %d, error %d\n",
image_index, err);
ret = -EPERM;
}
return ret;
}
#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 (authenticate_image(&images[image_index], image_index)) {
printf("Failed to authenticate image %d\n", 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 = (struct container_hdr *)spl_get_load_buffer(-size, size);
debug("%s: container: %p sector: %lu sectors: %u\n", __func__,
container, sector, sectors);
if (info->read(info, sector, sectors, container) != sectors)
return -EIO;
if (container->tag != 0x87 && container->version != 0x0) {
printf("Wrong container header");
return -ENOENT;
}
if (!container->num_images) {
printf("Wrong container, no image found");
return -ENOENT;
}
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;
container = (struct container_hdr *)spl_get_load_buffer(-size, size);
debug("%s: container: %p sector: %lu sectors: %u\n",
__func__, container, sector, sectors);
if (info->read(info, sector, sectors, container) !=
sectors)
return -EIO;
}
#ifdef CONFIG_AHAB_BOOT
memcpy((void *)SEC_SECURE_RAM_BASE, (const void *)container,
ALIGN(length, CONFIG_SYS_CACHELINE_SIZE));
ret = sc_seco_authenticate(-1, SC_MISC_AUTH_CONTAINER,
SECO_LOCAL_SEC_SEC_SECURE_RAM_BASE);
if (ret) {
printf("authenticate container hdr failed, return %d\n", ret);
return ret;
}
#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
if (sc_seco_authenticate(-1, SC_MISC_REL_CONTAINER, 0))
printf("Error: release container failed!\n");
#endif
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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