| Peng Fan | 1a7e625 | 2019-08-22 07:42:33 +0000 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * Copyright 2018-2019 NXP |
| 4 | */ |
| 5 | |
| 6 | #include <common.h> |
| 7 | #include <errno.h> |
| 8 | #include <spl.h> |
| 9 | #include <asm/arch/image.h> |
| 10 | |
| 11 | static struct boot_img_t *read_auth_image(struct spl_image_info *spl_image, |
| 12 | struct spl_load_info *info, |
| 13 | struct container_hdr *container, |
| 14 | int image_index, |
| 15 | u32 container_sector) |
| 16 | { |
| 17 | struct boot_img_t *images; |
| 18 | ulong sector; |
| 19 | u32 sectors; |
| 20 | |
| 21 | if (image_index > container->num_images) { |
| 22 | debug("Invalid image number\n"); |
| 23 | return NULL; |
| 24 | } |
| 25 | |
| 26 | images = (struct boot_img_t *)((u8 *)container + |
| 27 | sizeof(struct container_hdr)); |
| 28 | |
| 29 | if (images[image_index].offset % info->bl_len) { |
| 30 | printf("%s: image%d offset not aligned to %u\n", |
| 31 | __func__, image_index, info->bl_len); |
| 32 | return NULL; |
| 33 | } |
| 34 | |
| 35 | sectors = roundup(images[image_index].size, info->bl_len) / |
| 36 | info->bl_len; |
| 37 | sector = images[image_index].offset / info->bl_len + |
| 38 | container_sector; |
| 39 | |
| 40 | debug("%s: container: %p sector: %lu sectors: %u\n", __func__, |
| 41 | container, sector, sectors); |
| 42 | if (info->read(info, sector, sectors, |
| 43 | (void *)images[image_index].entry) != sectors) { |
| 44 | printf("%s wrong\n", __func__); |
| 45 | return NULL; |
| 46 | } |
| 47 | |
| 48 | return &images[image_index]; |
| 49 | } |
| 50 | |
| 51 | static int read_auth_container(struct spl_image_info *spl_image, |
| 52 | struct spl_load_info *info, ulong sector) |
| 53 | { |
| 54 | struct container_hdr *container = NULL; |
| 55 | u16 length; |
| 56 | u32 sectors; |
| 57 | int i, size; |
| 58 | |
| 59 | size = roundup(CONTAINER_HDR_ALIGNMENT, info->bl_len); |
| 60 | sectors = size / info->bl_len; |
| 61 | |
| 62 | /* |
| 63 | * It will not override the ATF code, so safe to use it here, |
| 64 | * no need malloc |
| 65 | */ |
| 66 | container = (struct container_hdr *)spl_get_load_buffer(-size, size); |
| 67 | |
| 68 | debug("%s: container: %p sector: %lu sectors: %u\n", __func__, |
| 69 | container, sector, sectors); |
| 70 | if (info->read(info, sector, sectors, container) != sectors) |
| 71 | return -EIO; |
| 72 | |
| 73 | if (container->tag != 0x87 && container->version != 0x0) { |
| 74 | printf("Wrong container header"); |
| 75 | return -ENOENT; |
| 76 | } |
| 77 | |
| 78 | if (!container->num_images) { |
| 79 | printf("Wrong container, no image found"); |
| 80 | return -ENOENT; |
| 81 | } |
| 82 | |
| 83 | length = container->length_lsb + (container->length_msb << 8); |
| 84 | debug("Container length %u\n", length); |
| 85 | |
| 86 | if (length > CONTAINER_HDR_ALIGNMENT) { |
| 87 | size = roundup(length, info->bl_len); |
| 88 | sectors = size / info->bl_len; |
| 89 | |
| 90 | container = (struct container_hdr *)spl_get_load_buffer(-size, size); |
| 91 | |
| 92 | debug("%s: container: %p sector: %lu sectors: %u\n", |
| 93 | __func__, container, sector, sectors); |
| 94 | if (info->read(info, sector, sectors, container) != |
| 95 | sectors) |
| 96 | return -EIO; |
| 97 | } |
| 98 | |
| 99 | for (i = 0; i < container->num_images; i++) { |
| 100 | struct boot_img_t *image = read_auth_image(spl_image, info, |
| 101 | container, i, |
| 102 | sector); |
| 103 | |
| 104 | if (!image) |
| 105 | return -EINVAL; |
| 106 | |
| 107 | if (i == 0) { |
| 108 | spl_image->load_addr = image->dst; |
| 109 | spl_image->entry_point = image->entry; |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | return 0; |
| 114 | } |
| 115 | |
| 116 | int spl_load_imx_container(struct spl_image_info *spl_image, |
| 117 | struct spl_load_info *info, ulong sector) |
| 118 | { |
| 119 | return read_auth_container(spl_image, info, sector); |
| 120 | } |