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Flash encryption: Support enabling flash encryption in bootloader, app support

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* App access functions are all flash encryption-aware
* Documentation for flash encryption
* Partition read/write is flash aware
* New encrypted write function
This commit is contained in:
Angus Gratton
2016-11-11 17:00:34 +11:00
parent bd20288b81
commit 9eb135fd73
36 changed files with 1511 additions and 404 deletions
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49
components/bootloader_support/src/flash_partitions.c Normal file
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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "esp_flash_partitions.h"
#include "esp_log.h"
static const char *TAG = "flash_parts";
esp_err_t esp_partition_table_basic_verify(const esp_partition_info_t *partition_table, bool log_errors, int *num_partitions)
{
int num_parts;
*num_partitions = 0;
for(num_parts = 0; num_parts < ESP_PARTITION_TABLE_MAX_ENTRIES; num_parts++) {
const esp_partition_info_t *part = &partition_table[num_parts];
if(part->magic == 0xFFFF
&& part->type == PART_TYPE_END
&& part->subtype == PART_SUBTYPE_END) {
/* TODO: check md5 */
ESP_LOGD(TAG, "partition table verified, %d entries", num_parts);
*num_partitions = num_parts;
return ESP_OK;
}
if(part->magic != ESP_PARTITION_MAGIC) {
if (log_errors) {
ESP_LOGE(TAG, "partition %d invalid magic number 0x%x", num_parts, part->magic);
}
return ESP_ERR_INVALID_STATE;
}
}
if (log_errors) {
ESP_LOGE(TAG, "partition table has no terminating entry, not valid");
}
return ESP_ERR_INVALID_STATE;
}