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efuse: Validates data after burning and re-burnes it if necessary

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It checks the content of the written data and encoding errors.
This commit is contained in:
KonstantinKondrashov
2022-04-05 23:02:22 +08:00
committed by BOT
parent 009e66e625
commit 114608142a
7 changed files with 411 additions and 84 deletions
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63
components/efuse/esp32s2/esp_efuse_utility.c
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@@ -58,6 +58,27 @@ static esp_err_t esp_efuse_set_timing(void)
uint32_t clock_hz = esp_clk_apb_freq();
return ets_efuse_set_timing(clock_hz) ? ESP_FAIL : ESP_OK;
}
static bool efuse_hal_is_coding_error_in_block(unsigned block)
{
if (block == 0) {
for (unsigned i = 0; i < 5; i++) {
if (REG_READ(EFUSE_RD_REPEAT_ERR0_REG + i * 4)) {
return true;
}
}
} else if (block <= 10) {
// EFUSE_RD_RS_ERR0_REG: (hi) BLOCK8, BLOCK7, BLOCK6, BLOCK5, BLOCK4, BLOCK3, BLOCK2, BLOCK1 (low)
// EFUSE_RD_RS_ERR1_REG: BLOCK10, BLOCK9
uint32_t error_reg = REG_READ(EFUSE_RD_RS_ERR0_REG + (block / 9) * 4);
unsigned offset = (block >= 9) ? block - 9 : block - 1;
if (((error_reg >> (4 * offset)) & 0x0F) != 0) {
return true;
}
}
return false;
}
#endif // ifndef CONFIG_EFUSE_VIRTUAL
// Efuse read operation: copies data from physical efuses to efuse read registers.
@@ -95,9 +116,47 @@ void esp_efuse_utility_burn_chip(void)
ets_efuse_rs_calculate((void *)range_write_addr_blocks[num_block].start, block_rs);
memcpy((void *)EFUSE_PGM_CHECK_VALUE0_REG, block_rs, sizeof(block_rs));
}
int data_len = (range_write_addr_blocks[num_block].end - range_write_addr_blocks[num_block].start) + sizeof(uint32_t);
unsigned r_data_len = (range_read_addr_blocks[num_block].end - range_read_addr_blocks[num_block].start) + sizeof(uint32_t);
unsigned data_len = (range_write_addr_blocks[num_block].end - range_write_addr_blocks[num_block].start) + sizeof(uint32_t);
memcpy((void *)EFUSE_PGM_DATA0_REG, (void *)range_write_addr_blocks[num_block].start, data_len);
ets_efuse_program(num_block);
uint32_t backup_write_data[8 + 3]; // 8 words are data and 3 words are RS coding data
memcpy(backup_write_data, (void *)EFUSE_PGM_DATA0_REG, sizeof(backup_write_data));
int repeat_burn_op = 1;
bool correct_written_data;
bool coding_error_before = efuse_hal_is_coding_error_in_block(num_block);
bool coding_error_occurred;
do {
ESP_LOGI(TAG, "BURN BLOCK%d", num_block);
ets_efuse_program(num_block); // BURN a block
bool coding_error_after;
for (unsigned i = 0; i < 5; i++) {
ets_efuse_read();
coding_error_after = efuse_hal_is_coding_error_in_block(num_block);
if (coding_error_after == true) {
break;
}
}
coding_error_occurred = (coding_error_before != coding_error_after) && coding_error_before == false;
if (coding_error_occurred) {
ESP_LOGE(TAG, "BLOCK%d has an error", num_block);
}
correct_written_data = esp_efuse_utility_is_correct_written_data(num_block, r_data_len);
if (!correct_written_data || coding_error_occurred) {
ESP_LOGW(TAG, "BLOCK%d: next retry [%d/3]...", num_block, repeat_burn_op);
memcpy((void *)EFUSE_PGM_DATA0_REG, (void *)backup_write_data, sizeof(backup_write_data));
}
} while ((!correct_written_data || coding_error_occurred) && repeat_burn_op++ < 3);
if (!correct_written_data) {
ESP_LOGE(TAG, "Written data are incorrect");
}
if (coding_error_occurred) {
ESP_LOGE(TAG, "Coding error occurred in block");
}
break;
}
}