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Merge branch 'bugfix/bootloader_anti_rollback_mmap_v3.3' into 'release/v3.3' 

bootloader_support: fix issue in memory mapping for getting app descriptor (v3.3)

See merge request espressif/esp-idf!10737
This commit is contained in:
Mahavir Jain 2020-10-08 16:31:35 +08:00
parent 0f6b7ad3cf 0167a5e96d
commit 1ffeff5948
1 changed files with 5 additions and 3 deletions
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8
components/bootloader_support/src/bootloader_common.c
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@ -234,13 +234,15 @@ esp_err_t bootloader_common_get_partition_description(const esp_partition_pos_t
return ESP_ERR_INVALID_ARG;
}
const uint8_t *image = bootloader_mmap(partition->offset, partition->size);
const uint32_t app_desc_offset = sizeof(esp_image_header_t) + sizeof(esp_image_segment_header_t);
const uint32_t mmap_size = app_desc_offset + sizeof(esp_app_desc_t);
const uint8_t *image = bootloader_mmap(partition->offset, mmap_size);
if (image == NULL) {
ESP_LOGE(TAG, "bootloader_mmap(0x%x, 0x%x) failed", partition->offset, partition->size);
ESP_LOGE(TAG, "bootloader_mmap(0x%x, 0x%x) failed", partition->offset, mmap_size);
return ESP_FAIL;
}
memcpy(app_desc, image + sizeof(esp_image_header_t) + sizeof(esp_image_segment_header_t), sizeof(esp_app_desc_t));
memcpy(app_desc, image + app_desc_offset, sizeof(esp_app_desc_t));
bootloader_munmap(image);
if (app_desc->magic_word != ESP_APP_DESC_MAGIC_WORD) {