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efuse: Add 'disable Download Mode' & ESP32-S2 'Secure Download Mode' functionality

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This commit is contained in:
Angus Gratton
2020-04-25 16:36:53 +10:00
committed by Angus Gratton
parent 48d9c14c28
commit f64ae4fa99
11 changed files with 195 additions and 45 deletions
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25
components/efuse/src/esp32/esp_efuse_fields.c
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@@ -70,14 +70,33 @@ uint32_t esp_efuse_get_pkg_ver(void)
// Disable BASIC ROM Console via efuse
void esp_efuse_disable_basic_rom_console(void)
{
uint8_t console_debug_disable = 0;
esp_efuse_read_field_blob(ESP_EFUSE_CONSOLE_DEBUG_DISABLE, &console_debug_disable, 1);
if (console_debug_disable == 0) {
if (!esp_efuse_read_field_bit(ESP_EFUSE_CONSOLE_DEBUG_DISABLE)) {
esp_efuse_write_field_cnt(ESP_EFUSE_CONSOLE_DEBUG_DISABLE, 1);
ESP_EARLY_LOGI(TAG, "Disable BASIC ROM Console fallback via efuse...");
}
}
esp_err_t esp_efuse_disable_rom_download_mode(void)
{
#ifndef CONFIG_ESP32_REV_MIN_3
/* Check if we support this revision at all */
if(esp_efuse_get_chip_ver() < 3) {
return ESP_ERR_NOT_SUPPORTED;
}
#endif
if (esp_efuse_read_field_bit(ESP_EFUSE_UART_DOWNLOAD_DIS)) {
return ESP_OK;
}
/* WR_DIS_FLASH_CRYPT_CNT also covers UART_DOWNLOAD_DIS on ESP32 */
if(esp_efuse_read_field_bit(ESP_EFUSE_WR_DIS_FLASH_CRYPT_CNT)) {
return ESP_ERR_INVALID_STATE;
}
return esp_efuse_write_field_bit(ESP_EFUSE_UART_DOWNLOAD_DIS);
}
void esp_efuse_write_random_key(uint32_t blk_wdata0_reg)
{
uint32_t buf[8];