1 /*
2  * SPDX-FileCopyrightText: 2017-2022 Espressif Systems (Shanghai) CO LTD
3  *
4  * SPDX-License-Identifier: Apache-2.0
5  */
6 
7 #include "esp_efuse.h"
8 #include "esp_efuse_utility.h"
9 #include "esp_efuse_table.h"
10 #include "stdlib.h"
11 #include "esp_types.h"
12 #include "assert.h"
13 #include "esp_err.h"
14 #include "esp_log.h"
15 #include "soc/efuse_periph.h"
16 #include "soc/chip_revision.h"
17 #include "hal/efuse_hal.h"
18 #include "sys/param.h"
19 #include "soc/syscon_reg.h"
20 
21 const static char *TAG = "efuse";
22 
23 // Contains functions that provide access to efuse fields which are often used in IDF.
24 
25 // Returns chip package from efuse
esp_efuse_get_pkg_ver(void)26 uint32_t esp_efuse_get_pkg_ver(void)
27 {
28     uint32_t pkg_ver = 0;
29     esp_efuse_read_field_blob(ESP_EFUSE_CHIP_VER_PKG, &pkg_ver, 4);
30     return pkg_ver;
31 }
32 
33 // Disable BASIC ROM Console via efuse
esp_efuse_disable_basic_rom_console(void)34 void esp_efuse_disable_basic_rom_console(void)
35 {
36     if (!esp_efuse_read_field_bit(ESP_EFUSE_CONSOLE_DEBUG_DISABLE)) {
37         esp_efuse_write_field_cnt(ESP_EFUSE_CONSOLE_DEBUG_DISABLE, 1);
38         ESP_LOGI(TAG, "Disable BASIC ROM Console fallback via efuse...");
39     }
40 }
41 
esp_efuse_disable_rom_download_mode(void)42 esp_err_t esp_efuse_disable_rom_download_mode(void)
43 {
44 #if CONFIG_ESP32_REV_MIN_FULL < 300
45     /* Check if we support this revision at all */
46     if (!ESP_CHIP_REV_ABOVE(efuse_hal_chip_revision(), 300)) {
47         return ESP_ERR_NOT_SUPPORTED;
48     }
49 #endif
50 
51     if (esp_efuse_read_field_bit(ESP_EFUSE_UART_DOWNLOAD_DIS)) {
52         return ESP_OK;
53     }
54 
55     /* WR_DIS_FLASH_CRYPT_CNT also covers UART_DOWNLOAD_DIS on ESP32 */
56     if(esp_efuse_read_field_bit(ESP_EFUSE_WR_DIS_FLASH_CRYPT_CNT)) {
57         return ESP_ERR_INVALID_STATE;
58     }
59 
60     return esp_efuse_write_field_bit(ESP_EFUSE_UART_DOWNLOAD_DIS);
61 }
62 
esp_efuse_set_rom_log_scheme(esp_efuse_rom_log_scheme_t log_scheme)63 esp_err_t esp_efuse_set_rom_log_scheme(esp_efuse_rom_log_scheme_t log_scheme)
64 {
65     return ESP_ERR_NOT_SUPPORTED;
66 }
67