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esp32: Core dump API to retrieve current core data layout in flash

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This commit is contained in:
Alexey Gerenkov
2018-03-13 17:07:42 +03:00
committed by bot
parent a55cc99f50
commit 30e766ee6b
3 changed files with 80 additions and 1 deletions
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55
components/esp32/core_dump.c
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@@ -24,6 +24,7 @@
#include "esp_panic.h"
#include "esp_partition.h"
#include "esp_clk.h"
#include "esp_core_dump.h"
#include "esp_log.h"
const static DRAM_ATTR char TAG[] __attribute__((unused)) = "esp_core_dump";
@@ -574,5 +575,57 @@ void esp_core_dump_init()
#endif
}
#endif
esp_err_t esp_core_dump_image_get(size_t* out_addr, size_t *out_size)
{
esp_err_t err;
const void *core_data;
spi_flash_mmap_handle_t core_data_handle;
if (out_addr == NULL || out_size == NULL) {
return ESP_ERR_INVALID_ARG;
}
const esp_partition_t *core_part = esp_partition_find_first(ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_DATA_COREDUMP, NULL);
if (!core_part) {
ESP_LOGE(TAG, "No core dump partition found!");
return ESP_FAIL;
}
if (core_part->size < sizeof(uint32_t)) {
ESP_LOGE(TAG, "Too small core dump partition!");
return ESP_FAIL;
}
err = esp_partition_mmap(core_part, 0, sizeof(uint32_t),
SPI_FLASH_MMAP_DATA, &core_data, &core_data_handle);
if (err != ESP_OK) {
ESP_LOGE(TAG, "Failed to mmap core dump data (%d)!", err);
return err;
}
uint32_t *dw = (uint32_t *)core_data;
*out_size = *dw;
spi_flash_munmap(core_data_handle);
// remap full core dump with CRC
err = esp_partition_mmap(core_part, 0, *out_size,
SPI_FLASH_MMAP_DATA, &core_data, &core_data_handle);
if (err != ESP_OK) {
ESP_LOGE(TAG, "Failed to mmap core dump data (%d)!", err);
return err;
}
uint32_t *crc = (uint32_t *)(((uint8_t *)core_data) + *out_size);
crc--; // Point to CRC field
// Calc CRC over core dump data except for CRC field
core_dump_crc_t cur_crc = crc32_le(0, (uint8_t const *)core_data, *out_size - sizeof(core_dump_crc_t));
if (*crc != cur_crc) {
ESP_LOGE(TAG, "Core dump data CRC check failed: 0x%x -> 0x%x!", *crc, cur_crc);
spi_flash_munmap(core_data_handle);
return ESP_FAIL;
}
spi_flash_munmap(core_data_handle);
*out_addr = core_part->address;
return ESP_OK;
}
#endif