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https://github.com/espressif/esp-idf.git
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113 lines
5.8 KiB
C
113 lines
5.8 KiB
C
/*
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* SPDX-FileCopyrightText: 2017-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "esp_efuse_utility.h"
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#include "soc/efuse_periph.h"
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#include "hal/efuse_hal.h"
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#include "esp_log.h"
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#include "assert.h"
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#include "sdkconfig.h"
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#include <sys/param.h>
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#ifndef CONFIG_EFUSE_VIRTUAL
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#error Linux target supports only VIRTUAL eFuses
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#endif // CONFIG_EFUSE_VIRTUAL
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static const char *TAG = "efuse";
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extern uint32_t virt_blocks[EFUSE_BLK_MAX][COUNT_EFUSE_REG_PER_BLOCK];
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/*Range addresses to read blocks*/
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const esp_efuse_range_addr_t range_read_addr_blocks[] = {
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{(uintptr_t) &virt_blocks[EFUSE_BLK0][0], (uintptr_t) &virt_blocks[EFUSE_BLK0][5]}, // range address of EFUSE_BLK0 REPEAT
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{(uintptr_t) &virt_blocks[EFUSE_BLK1][0], (uintptr_t) &virt_blocks[EFUSE_BLK1][5]}, // range address of EFUSE_BLK1 MAC_SPI_8M
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{(uintptr_t) &virt_blocks[EFUSE_BLK2][0], (uintptr_t) &virt_blocks[EFUSE_BLK2][7]}, // range address of EFUSE_BLK2 SYS_DATA
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{(uintptr_t) &virt_blocks[EFUSE_BLK3][0], (uintptr_t) &virt_blocks[EFUSE_BLK3][7]}, // range address of EFUSE_BLK3 USR_DATA
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{(uintptr_t) &virt_blocks[EFUSE_BLK4][0], (uintptr_t) &virt_blocks[EFUSE_BLK4][7]}, // range address of EFUSE_BLK4 KEY0
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{(uintptr_t) &virt_blocks[EFUSE_BLK5][0], (uintptr_t) &virt_blocks[EFUSE_BLK5][7]}, // range address of EFUSE_BLK5 KEY1
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{(uintptr_t) &virt_blocks[EFUSE_BLK6][0], (uintptr_t) &virt_blocks[EFUSE_BLK6][7]}, // range address of EFUSE_BLK6 KEY2
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{(uintptr_t) &virt_blocks[EFUSE_BLK7][0], (uintptr_t) &virt_blocks[EFUSE_BLK7][7]}, // range address of EFUSE_BLK7 KEY3
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{(uintptr_t) &virt_blocks[EFUSE_BLK8][0], (uintptr_t) &virt_blocks[EFUSE_BLK8][7]}, // range address of EFUSE_BLK8 KEY4
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{(uintptr_t) &virt_blocks[EFUSE_BLK9][0], (uintptr_t) &virt_blocks[EFUSE_BLK9][7]}, // range address of EFUSE_BLK9 KEY5
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{(uintptr_t) &virt_blocks[EFUSE_BLK10][0], (uintptr_t) &virt_blocks[EFUSE_BLK10][7]}, // range address of EFUSE_BLK10 KEY6
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};
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static uint32_t write_mass_blocks[EFUSE_BLK_MAX][COUNT_EFUSE_REG_PER_BLOCK] = { 0 };
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/*Range addresses to write blocks (it is not real regs, it is buffer) */
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const esp_efuse_range_addr_t range_write_addr_blocks[] = {
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{(uintptr_t) &write_mass_blocks[EFUSE_BLK0][0], (uintptr_t) &write_mass_blocks[EFUSE_BLK0][5]},
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{(uintptr_t) &write_mass_blocks[EFUSE_BLK1][0], (uintptr_t) &write_mass_blocks[EFUSE_BLK1][5]},
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{(uintptr_t) &write_mass_blocks[EFUSE_BLK2][0], (uintptr_t) &write_mass_blocks[EFUSE_BLK2][7]},
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{(uintptr_t) &write_mass_blocks[EFUSE_BLK3][0], (uintptr_t) &write_mass_blocks[EFUSE_BLK3][7]},
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{(uintptr_t) &write_mass_blocks[EFUSE_BLK4][0], (uintptr_t) &write_mass_blocks[EFUSE_BLK4][7]},
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{(uintptr_t) &write_mass_blocks[EFUSE_BLK5][0], (uintptr_t) &write_mass_blocks[EFUSE_BLK5][7]},
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{(uintptr_t) &write_mass_blocks[EFUSE_BLK6][0], (uintptr_t) &write_mass_blocks[EFUSE_BLK6][7]},
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{(uintptr_t) &write_mass_blocks[EFUSE_BLK7][0], (uintptr_t) &write_mass_blocks[EFUSE_BLK7][7]},
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{(uintptr_t) &write_mass_blocks[EFUSE_BLK8][0], (uintptr_t) &write_mass_blocks[EFUSE_BLK8][7]},
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{(uintptr_t) &write_mass_blocks[EFUSE_BLK9][0], (uintptr_t) &write_mass_blocks[EFUSE_BLK9][7]},
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{(uintptr_t) &write_mass_blocks[EFUSE_BLK10][0], (uintptr_t) &write_mass_blocks[EFUSE_BLK10][7]},
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};
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// Efuse read operation: copies data from physical efuses to efuse read registers.
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void esp_efuse_utility_clear_program_registers(void)
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{
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}
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esp_err_t esp_efuse_utility_check_errors(void)
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{
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return ESP_OK;
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}
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// Burn values written to the efuse write registers
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esp_err_t esp_efuse_utility_burn_chip(void)
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{
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return esp_efuse_utility_burn_chip_opt(false, true);
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}
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esp_err_t esp_efuse_utility_burn_chip_opt(bool ignore_coding_errors, bool verify_written_data)
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{
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esp_err_t error = ESP_OK;
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ESP_LOGW(TAG, "Virtual efuses enabled: Not really burning eFuses");
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for (int num_block = EFUSE_BLK_MAX - 1; num_block >= EFUSE_BLK0; num_block--) {
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int subblock = 0;
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for (uintptr_t addr_wr_block = range_write_addr_blocks[num_block].start; addr_wr_block <= range_write_addr_blocks[num_block].end; addr_wr_block += 4) {
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virt_blocks[num_block][subblock++] |= REG_READ(addr_wr_block);
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}
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}
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#ifdef CONFIG_EFUSE_VIRTUAL_KEEP_IN_FLASH
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esp_efuse_utility_write_efuses_to_flash();
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#endif
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esp_efuse_utility_reset();
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return error;
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}
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// After esp_efuse_write.. functions EFUSE_BLKx_WDATAx_REG were filled is not coded values.
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// This function reads EFUSE_BLKx_WDATAx_REG registers, and checks possible to write these data with RS coding scheme.
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// The RS coding scheme does not require data changes for the encoded data. esp32s2 has special registers for this.
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// They will be filled during the burn operation.
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esp_err_t esp_efuse_utility_apply_new_coding_scheme(void)
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{
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// start with EFUSE_BLK1. EFUSE_BLK0 - always uses EFUSE_CODING_SCHEME_NONE.
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for (int num_block = EFUSE_BLK1; num_block < EFUSE_BLK_MAX; num_block++) {
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if (esp_efuse_get_coding_scheme(num_block) == EFUSE_CODING_SCHEME_RS) {
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for (uintptr_t addr_wr_block = range_write_addr_blocks[num_block].start; addr_wr_block <= range_write_addr_blocks[num_block].end; addr_wr_block += 4) {
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if (REG_READ(addr_wr_block)) {
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int num_reg = 0;
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for (uintptr_t addr_rd_block = range_read_addr_blocks[num_block].start; addr_rd_block <= range_read_addr_blocks[num_block].end; addr_rd_block += 4, ++num_reg) {
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if (esp_efuse_utility_read_reg(num_block, num_reg)) {
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ESP_LOGE(TAG, "Bits are not empty. Write operation is forbidden.");
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return ESP_ERR_CODING;
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}
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}
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break;
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}
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}
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}
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}
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return ESP_OK;
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}
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