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fix(esp_system): Correct address used to fetch application image header

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This commit is contained in:
Laukik Hase
2024-10-22 18:21:40 +05:30
committed by Aditya Patwardhan
parent 4143156926
commit 4acc6d3482
1 changed files with 8 additions and 3 deletions
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11
components/esp_system/port/cpu_start.c
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@ -13,6 +13,7 @@
#include "esp_log.h"
#include "esp_chip_info.h"
#include "esp_app_format.h"
#include "esp_private/cache_err_int.h"
#include "esp_clk_internal.h"
@ -797,9 +798,13 @@ void IRAM_ATTR call_start_cpu0(void)
// Read the application binary image header. This will also decrypt the header if the image is encrypted.
__attribute__((unused)) esp_image_header_t fhdr = {0};
// This assumes that DROM is the first segment in the application binary, i.e. that we can read
// the binary header through cache by accessing SOC_DROM_LOW address.
hal_memcpy(&fhdr, (void *) SOC_DROM_LOW, sizeof(fhdr));
// We can access the image header through the cache by reading from the memory-mapped virtual DROM start offset
uint32_t fhdr_src_addr = (uint32_t)(&_rodata_reserved_start) - sizeof(esp_image_header_t) - sizeof(esp_image_segment_header_t);
hal_memcpy(&fhdr, (void *) fhdr_src_addr, sizeof(fhdr));
if (fhdr.magic != ESP_IMAGE_HEADER_MAGIC) {
ESP_EARLY_LOGE(TAG, "Invalid app image header");
abort();
}
#if CONFIG_IDF_TARGET_ESP32
#if !CONFIG_SPIRAM_BOOT_INIT