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Merge branch 'feature/calc_checksum_from_flash' into 'master'

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feat: calc checksum from flash

See merge request sdk/ESP8266_RTOS_SDK!382
This commit is contained in:
Wu Jian Gang
2018-08-10 11:25:44 +08:00
parent 00e0ca0b9a 269f6461e1
commit a696e22b36
1 changed files with 53 additions and 0 deletions
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53
components/bootloader_support/src/esp_image_format.c
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@ -586,6 +586,7 @@ static void debug_log_hash(const uint8_t *image_hash, const char *label)
#ifdef CONFIG_TARGET_PLATFORM_ESP8266
#include <string.h>
#include <stdlib.h>
#include <sys/param.h>
#include <esp_image_format.h>
@ -600,6 +601,8 @@ static const char *TAG = "esp_image";
#define HASH_LEN 32 /* SHA-256 digest length */
#define MAX_CHECKSUM_READ_SIZE SPI_FLASH_SEC_SIZE
#define SIXTEEN_MB 0x1000000
#define ESP_ROM_CHECKSUM_INITIAL 0xEF
@ -923,6 +926,7 @@ err:
static esp_err_t process_segment_data(intptr_t load_addr, uint32_t data_addr, uint32_t data_len, bool do_load, bootloader_sha256_handle_t sha_handle, uint32_t *checksum)
{
#ifdef BOOTLOADER_BUILD
const uint32_t *data = (const uint32_t *)bootloader_mmap(data_addr, data_len);
if(!data) {
ESP_LOGE(TAG, "bootloader_mmap(0x%x, 0x%x) failed",
@ -965,6 +969,55 @@ static esp_err_t process_segment_data(intptr_t load_addr, uint32_t data_addr, ui
bootloader_munmap(data);
return ESP_OK;
#endif
#ifndef BOOTLOADER_BUILD
uint32_t had_read_size = 0, to_read_size = 0;
uint32_t* data = 0;
data = (uint32_t*)malloc(MAX_CHECKSUM_READ_SIZE);
if(data == NULL) {
return ESP_FAIL;
}
const uint32_t *src = data;
for (; had_read_size != data_len; ) {
to_read_size = ((data_len - had_read_size) < MAX_CHECKSUM_READ_SIZE) ? (data_len - had_read_size) : MAX_CHECKSUM_READ_SIZE;
int ret = ESP_OK;
ret = spi_flash_read(data_addr + had_read_size, data, to_read_size);
if (ret) {
ESP_LOGE(TAG, "SPI flash read result %d\n", ret);
free(data);
return ESP_FAIL;
}
had_read_size += to_read_size;
for (int i = 0; i < to_read_size; i += 4) {
int w_i = i/4; // Word index
uint32_t w = src[w_i];
*checksum ^= w;
#ifdef BOOTLOADER_BUILD
if (do_load) {
// dest[w_i] = w ^ ((w_i & 1) ? ram_obfs_value[0] : ram_obfs_value[1]);
}
#endif
// SHA_CHUNK determined experimentally as the optimum size
// to call bootloader_sha256_data() with. This is a bit
// counter-intuitive, but it's ~3ms better than using the
// SHA256 block size.
const size_t SHA_CHUNK = 1024;
if (sha_handle != NULL && i % SHA_CHUNK == 0) {
// bootloader_sha256_data(sha_handle, &src[w_i],
// MIN(SHA_CHUNK, data_len - i));
}
}
} // end for
free(data);
return ESP_OK;
#endif
}
static esp_err_t verify_segment_header(int index, const esp_image_segment_header_t *segment, uint32_t segment_data_offs, bool silent)