mirror of
https://github.com/espressif/esp-idf.git
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84 lines
3.2 KiB
C
84 lines
3.2 KiB
C
// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "esp_efuse.h"
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#include "esp_efuse_utility.h"
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#include "soc/efuse_periph.h"
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#include "assert.h"
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#include "sdkconfig.h"
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#include "esp_efuse_table.h"
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const static char *TAG = "efuse";
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// Sets a write protection for the whole block.
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esp_err_t esp_efuse_set_write_protect(esp_efuse_block_t blk)
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{
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if (blk == EFUSE_BLK1) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_WR_DIS_BLK1, 1);
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} else if (blk == EFUSE_BLK2) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_WR_DIS_SYS_DATA_PART1, 1);
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} else if (blk == EFUSE_BLK3) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_WR_DIS_USER_DATA, 1);
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} else if (blk == EFUSE_BLK4) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_WR_DIS_KEY0, 1);
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} else if (blk == EFUSE_BLK5) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_WR_DIS_KEY1, 1);
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} else if (blk == EFUSE_BLK6) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_WR_DIS_KEY2, 1);
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} else if (blk == EFUSE_BLK7) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_WR_DIS_KEY3, 1);
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} else if (blk == EFUSE_BLK8) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_WR_DIS_KEY4, 1);
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} else if (blk == EFUSE_BLK9) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_WR_DIS_KEY5, 1);
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} else if (blk == EFUSE_BLK10) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_WR_DIS_SYS_DATA_PART2, 1);
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}
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return ESP_ERR_NOT_SUPPORTED;
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}
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// read protect for blk.
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esp_err_t esp_efuse_set_read_protect(esp_efuse_block_t blk)
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{
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if (blk == EFUSE_BLK4) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_RD_DIS_KEY0, 1);
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} else if (blk == EFUSE_BLK5) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_RD_DIS_KEY1, 1);
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} else if (blk == EFUSE_BLK6) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_RD_DIS_KEY2, 1);
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} else if (blk == EFUSE_BLK7) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_RD_DIS_KEY3, 1);
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} else if (blk == EFUSE_BLK8) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_RD_DIS_KEY4, 1);
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} else if (blk == EFUSE_BLK9) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_RD_DIS_KEY5, 1);
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} else if (blk == EFUSE_BLK10) {
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return esp_efuse_write_field_cnt(ESP_EFUSE_RD_DIS_SYS_DATA_PART2, 1);
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}
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return ESP_ERR_NOT_SUPPORTED;
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}
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// get efuse coding_scheme.
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esp_efuse_coding_scheme_t esp_efuse_get_coding_scheme(esp_efuse_block_t blk)
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{
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esp_efuse_coding_scheme_t scheme;
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if (blk == EFUSE_BLK0) {
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scheme = EFUSE_CODING_SCHEME_NONE;
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} else {
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scheme = EFUSE_CODING_SCHEME_RS;
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}
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ESP_EARLY_LOGD(TAG, "coding scheme %d", scheme);
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return scheme;
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}
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