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Merge branch 'docs/security' into 'master'

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docs: Added more wordings to capture secure boot and flash encryption dependency.

See merge request idf/esp-idf!2947
This commit is contained in:
Jiang Jiang Jian
2018-08-16 19:31:36 +08:00
parent 00ef8bf726 b27773e87c
commit 98eaa5c2ec
4 changed files with 40 additions and 2 deletions
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10
components/bootloader_support/src/flash_encrypt.c
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@@ -337,3 +337,13 @@ esp_err_t esp_flash_encrypt_region(uint32_t src_addr, size_t data_length)
ESP_LOGE(TAG, "flash operation failed: 0x%x", err);
return err;
}
void esp_flash_write_protect_crypt_cnt()
{
uint32_t efuse_blk0 = REG_READ(EFUSE_BLK0_RDATA0_REG);
bool flash_crypt_wr_dis = efuse_blk0 & EFUSE_WR_DIS_FLASH_CRYPT_CNT;
if(!flash_crypt_wr_dis) {
REG_WRITE(EFUSE_BLK0_WDATA0_REG, EFUSE_WR_DIS_FLASH_CRYPT_CNT);
esp_efuse_burn_new_values();
}
}