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spi_flash: add config option to override flash size in bootloader header

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Sometimes the flash size read from bootloader is not correct. This may
forbid SPI Flash driver from reading the the area larger than the size
in bootloader header.

When the new config option is enabled, the latest configured
ESPTOOLPY_FLAHSIZE in the app header will be used to override the value
read from bootloader header.
This commit is contained in:
Michael (XIAO Xufeng)
2020-08-24 11:09:33 +08:00
parent 7987f7ccae
commit e65ed8c959
6 changed files with 63 additions and 5 deletions
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21
components/esp32/cpu_start.c
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@@ -407,6 +407,22 @@ void start_cpu0_default(void)
#ifndef CONFIG_FREERTOS_UNICORE
esp_dport_access_int_init();
#endif
// Read the application binary image header. This will also decrypt the header if the image is encrypted.
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.
memcpy(&fhdr, (void*) SOC_DROM_LOW, sizeof(fhdr));
#if CONFIG_SPI_FLASH_SIZE_OVERRIDE
int app_flash_size = esp_image_get_flash_size(fhdr.spi_size);
if (app_flash_size < 1 * 1024 * 1024) {
ESP_LOGE(TAG, "Invalid flash size in app image header.");
abort();
}
bootloader_flash_update_size(app_flash_size);
#endif //CONFIG_SPI_FLASH_SIZE_OVERRIDE
spi_flash_init();
/* init default OS-aware flash access critical section */
spi_flash_guard_set(&g_flash_guard_default_ops);
@@ -443,11 +459,6 @@ void start_cpu0_default(void)
bootloader_flash_update_id();
#if !CONFIG_SPIRAM_BOOT_INIT
// Read the application binary image header. This will also decrypt the header if the image is encrypted.
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.
memcpy(&fhdr, (void*) SOC_DROM_LOW, sizeof(fhdr));
// If psram is uninitialized, we need to improve some flash configuration.
bootloader_flash_clock_config(&fhdr);
bootloader_flash_gpio_config(&fhdr);