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bootloader: add flash encryption support for C3

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Adds flash encryption support for C3 and updates docs for S2 & C3
This commit is contained in:
Marius Vikhammer
2020-12-21 14:48:49 +08:00
parent e82fe93b3d
commit 03fa63b0c9
12 changed files with 1191 additions and 238 deletions
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15
components/bootloader_support/src/flash_encrypt.c
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@@ -30,7 +30,7 @@
#define CRYPT_CNT ESP_EFUSE_SPI_BOOT_CRYPT_CNT
#define WR_DIS_CRYPT_CNT ESP_EFUSE_WR_DIS_SPI_BOOT_CRYPT_CNT
#elif CONFIG_IDF_TARGET_ESP32C3
#define CRYPT_CNT ESP_EFUSE_WR_DIS_SPI_BOOT_CRYPT_CNT
#define CRYPT_CNT ESP_EFUSE_SPI_BOOT_CRYPT_CNT
#define WR_DIS_CRYPT_CNT ESP_EFUSE_WR_DIS_SPI_BOOT_CRYPT_CNT
#endif
@@ -90,10 +90,12 @@ esp_flash_enc_mode_t esp_get_flash_encryption_mode(void)
#if CONFIG_IDF_TARGET_ESP32
uint8_t dis_dl_enc = 0, dis_dl_dec = 0, dis_dl_cache = 0;
#elif CONFIG_IDF_TARGET_ESP32S2
uint8_t dis_dl_enc = 0;
uint8_t dis_dl_enc = 0;
uint8_t dis_dl_icache = 0;
uint8_t dis_dl_dcache = 0;
#elif CONFIG_IDF_TARGET_ESP32C3
uint8_t dis_dl_enc = 0;
uint8_t dis_dl_icache = 0;
#endif
esp_flash_enc_mode_t mode = ESP_FLASH_ENC_MODE_DEVELOPMENT;
@@ -128,6 +130,13 @@ esp_flash_enc_mode_t esp_get_flash_encryption_mode(void)
if (dis_dl_enc && dis_dl_icache && dis_dl_dcache) {
mode = ESP_FLASH_ENC_MODE_RELEASE;
}
#elif CONFIG_IDF_TARGET_ESP32C3
dis_dl_enc = esp_efuse_read_field_bit(ESP_EFUSE_DIS_DOWNLOAD_MANUAL_ENCRYPT);
dis_dl_icache = esp_efuse_read_field_bit(ESP_EFUSE_DIS_DOWNLOAD_ICACHE);
if (dis_dl_enc && dis_dl_icache) {
mode = ESP_FLASH_ENC_MODE_RELEASE;
}
#endif
}
} else {