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efuse: Add more logging for virtual efuses

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Closes https://github.com/espressif/esp-idf/pull/10536
This commit is contained in:
Chip Weinberger 2023-01-23 12:13:05 -08:00 committed by KonstantinKondrashov
parent e65eaa4d8c
commit c7a12dd34b
4 changed files with 74 additions and 28 deletions
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2
components/bootloader_support/src/flash_encryption/flash_encrypt.c
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@ -313,7 +313,7 @@ esp_err_t esp_flash_encrypt_enable(void)
ESP_LOGI(TAG, "Flash encryption completed");
#if CONFIG_EFUSE_VIRTUAL
#ifdef CONFIG_EFUSE_VIRTUAL
ESP_LOGW(TAG, "Flash encryption not really completed. Must disable virtual efuses");
#endif

6
components/efuse/Kconfig
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@ -41,6 +41,12 @@ menu "eFuse Bit Manager"
This mode is useful when need to keep changes after reboot
(testing secure_boot and flash_encryption).
config EFUSE_VIRTUAL_LOG_ALL_WRITES
bool "Log all virtual writes"
depends on EFUSE_VIRTUAL
help
If enabled, log efuse burns. This shows changes that would be made.
choice EFUSE_CODE_SCHEME_SELECTOR
prompt "Coding Scheme Compatibility"
default EFUSE_CODE_SCHEME_COMPAT_3_4

9
components/efuse/private_include/esp_efuse_utility.h
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@ -146,6 +146,15 @@ void esp_efuse_utility_update_virt_blocks(void);
*/
void esp_efuse_utility_debug_dump_blocks(void);
/**
* @brief Prints efuse values for a single block.
* @param[in] num_block Index of efuse block.
* @param[in] from_read Take data from:
* true - read area (already burned efuses),
* false - write area (not yet burned efuses, prepared for burn).
*/
void esp_efuse_utility_debug_dump_single_block(int num_block, bool from_read);
/**
* @brief Erase the virt_blocks array.
*/

85
components/efuse/src/esp_efuse_utility.c
View File

@ -164,10 +164,25 @@ void esp_efuse_utility_reset(void)
}
}
// Burn values written to the efuse write registers
void esp_efuse_utility_debug_dump_pending(void)
{
for (int num_block = 0; num_block < EFUSE_BLK_MAX; num_block++) {
for (uint32_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) {
if (REG_READ(addr_wr_block) != 0) {
esp_efuse_utility_debug_dump_single_block(num_block, false);
break;
}
}
}
}
esp_err_t esp_efuse_utility_burn_efuses(void)
{
++s_burn_counter;
#ifdef CONFIG_EFUSE_VIRTUAL_LOG_ALL_WRITES
ESP_EARLY_LOGW(TAG, "Burn:");
esp_efuse_utility_debug_dump_pending();
#endif
esp_err_t err = esp_efuse_utility_burn_chip();
++s_burn_counter;
return err;
@ -193,13 +208,13 @@ void esp_efuse_utility_update_virt_blocks(void)
#else
if (1) {
#endif
ESP_EARLY_LOGW(TAG, "Loading virtual efuse blocks from real efuses");
ESP_EARLY_LOGW(TAG, "[Virtual] Loading virtual efuse blocks from real efuses");
for (int num_block = EFUSE_BLK0; num_block < EFUSE_BLK_MAX; num_block++) {
int subblock = 0;
for (uint32_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) {
virt_blocks[num_block][subblock++] = REG_READ(addr_rd_block);
}
ESP_EARLY_LOGD(TAG, "virt_blocks[%d] is filled by EFUSE_BLOCK%d", num_block, num_block);
ESP_EARLY_LOGD(TAG, "[Virtual] virt_blocks[%d] is filled by EFUSE_BLOCK%d", num_block, num_block);
}
#ifdef CONFIG_EFUSE_VIRTUAL_KEEP_IN_FLASH
esp_efuse_utility_write_efuses_to_flash();
@ -210,28 +225,35 @@ void esp_efuse_utility_update_virt_blocks(void)
#endif
}
// Prints efuse values for a single block
void esp_efuse_utility_debug_dump_single_block(int num_block, bool from_read)
{
esp_rom_printf("%d) ", num_block);
int num_reg = 0;
if (from_read) {
for (uint32_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++) {
#ifdef CONFIG_EFUSE_VIRTUAL
esp_rom_printf("0x%08x ", virt_blocks[num_block][num_reg]);
#else
esp_rom_printf("0x%08x ", REG_READ(addr_rd_block));
(void) num_reg;
#endif
}
} else {
for (uint32_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, num_reg++) {
esp_rom_printf("0x%08x ", REG_READ(addr_wr_block));
}
}
esp_rom_printf("\n");
}
// Prints efuse values for all registers.
void esp_efuse_utility_debug_dump_blocks(void)
{
esp_rom_printf("EFUSE_BLKx:\n");
#ifdef CONFIG_EFUSE_VIRTUAL
for (int num_block = EFUSE_BLK0; num_block < EFUSE_BLK_MAX; num_block++) {
int num_reg = 0;
esp_rom_printf("%d) ", num_block);
for (uint32_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++) {
esp_rom_printf("0x%08x ", virt_blocks[num_block][num_reg]);
}
esp_rom_printf("\n");
esp_efuse_utility_debug_dump_single_block(num_block, true);
}
#else
for (int num_block = EFUSE_BLK0; num_block < EFUSE_BLK_MAX; num_block++) {
esp_rom_printf("%d) ", num_block);
for (uint32_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) {
esp_rom_printf("0x%08x ", REG_READ(addr_rd_block));
}
esp_rom_printf("\n");
}
#endif
esp_rom_printf("\n");
}
@ -420,57 +442,66 @@ void esp_efuse_init_virtual_mode_in_flash(uint32_t offset, uint32_t size)
void esp_efuse_utility_erase_efuses_in_flash(void)
{
ESP_EARLY_LOGW(TAG, "[Virtual] Erasing eFuses in flash");
if (esp_efuse_flash_offset == 0) {
ESP_EARLY_LOGE(TAG, "no efuse partition in partition_table? (Flash is not updated)");
ESP_EARLY_LOGE(TAG, "[Virtual] no efuse partition in partition_table? (Flash is not updated)");
abort();
}
esp_err_t err = bootloader_flash_erase_range(esp_efuse_flash_offset, esp_efuse_flash_size);
if (err != ESP_OK) {
ESP_EARLY_LOGE(TAG, "Failed to erase flash. err = 0x%x", err);
ESP_EARLY_LOGE(TAG, "[Virtual] Failed to erase flash. err = 0x%x", err);
abort();
}
ESP_EARLY_LOGW(TAG, "[Virtual] Erase complete");
}
bool esp_efuse_utility_load_efuses_from_flash(void)
{
ESP_EARLY_LOGW(TAG, "[Virtual] try loading efuses from flash: 0x%x (offset)", esp_efuse_flash_offset);
if (esp_efuse_flash_offset == 0) {
ESP_EARLY_LOGE(TAG, "no efuse partition in partition_table? (Flash is not updated)");
ESP_EARLY_LOGE(TAG, "[Virtual] no efuse partition in partition_table? (Flash is not updated)");
abort();
}
uint32_t efuses_in_flash[sizeof(virt_blocks)];
esp_err_t err = bootloader_flash_read(esp_efuse_flash_offset, &efuses_in_flash, sizeof(efuses_in_flash), true);
if (err != ESP_OK) {
ESP_EARLY_LOGE(TAG, "Can not read eFuse partition from flash (err=0x%x)", err);
ESP_EARLY_LOGE(TAG, "[Virtual] Can not read eFuse partition from flash (err=0x%x)", err);
abort();
}
for (unsigned i = 0; i < sizeof(virt_blocks); ++i) {
if (efuses_in_flash[i] != 0xFFFFFFFF) {
ESP_EARLY_LOGW(TAG, "Loading virtual efuse blocks from flash");
ESP_EARLY_LOGW(TAG, "[Virtual] Loading virtual efuse blocks from flash");
memcpy(virt_blocks, efuses_in_flash, sizeof(virt_blocks));
return true;
}
}
ESP_EARLY_LOGW(TAG, "[Virtual] no efuses found in flash");
return false;
}
void esp_efuse_utility_write_efuses_to_flash(void)
{
if (esp_efuse_flash_offset == 0) {
ESP_EARLY_LOGE(TAG, "no efuse partition in partition_table? (Flash is not updated)");
ESP_EARLY_LOGE(TAG, "[Virtual] no efuse partition in partition_table? (Flash is not updated)");
abort();
}
esp_err_t err = bootloader_flash_erase_range(esp_efuse_flash_offset, esp_efuse_flash_size);
if (err != ESP_OK) {
ESP_EARLY_LOGE(TAG, "Failed to erase flash. err = 0x%x", err);
ESP_EARLY_LOGE(TAG, "[Virtual] Failed to erase flash. err = 0x%x", err);
abort();
}
err = bootloader_flash_write(esp_efuse_flash_offset, &virt_blocks, sizeof(virt_blocks), false);
if (err != ESP_OK) {
ESP_EARLY_LOGE(TAG, "secure_version can not be written to flash. err = 0x%x", err);
ESP_EARLY_LOGE(TAG, "[Virtual] Failed to write eFuses to flash. err = 0x%x", err);
abort();
}
}