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Flash encryption: Support enabling flash encryption in bootloader, app support

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* App access functions are all flash encryption-aware
* Documentation for flash encryption
* Partition read/write is flash aware
* New encrypted write function
This commit is contained in:
Angus Gratton
2016-11-11 17:00:34 +11:00
parent bd20288b81
commit 9eb135fd73
36 changed files with 1511 additions and 404 deletions
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17
components/esp32/include/esp_flash_data_types.h
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@@ -47,9 +47,24 @@ typedef struct {
uint8_t subtype;
esp_partition_pos_t pos;
uint8_t label[16];
uint8_t reserved[4];
uint32_t flags;
} esp_partition_info_t;
#define PART_TYPE_APP 0x00
#define PART_SUBTYPE_FACTORY 0x00
#define PART_SUBTYPE_OTA_FLAG 0x10
#define PART_SUBTYPE_OTA_MASK 0x0f
#define PART_SUBTYPE_TEST 0x20
#define PART_TYPE_DATA 0x01
#define PART_SUBTYPE_DATA_OTA 0x00
#define PART_SUBTYPE_DATA_RF 0x01
#define PART_SUBTYPE_DATA_WIFI 0x02
#define PART_TYPE_END 0xff
#define PART_SUBTYPE_END 0xff
#define PART_FLAG_ENCRYPTED (1<<0)
#ifdef __cplusplus
}

14
components/esp32/include/rom/spi_flash.h
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@@ -495,16 +495,20 @@ SpiFlashOpResult SPI_Prepare_Encrypt_Data(uint32_t flash_addr, uint32_t *data);
void SPI_Write_Encrypt_Disable(void);
/**
* @brief Encrpto writing data to flash, you should Erase it yourself if need.
* Please do not call this function in SDK.
* @brief Write data to flash with transparent encryption.
* @note Sectors to be written should already be erased.
*
* @param uint32_t flash_addr : Address to write, should be 32 bytes aligned.
* @note Please do not call this function in SDK.
*
* @param uint32_t *data : The pointer to data which is to write.
* @param uint32_t flash_addr : Address to write, should be 32 byte aligned.
*
* @param uint32_t *data : The pointer to data to write. Note, this pointer must
* be 32 bit aligned and the content of the data will be
* modified by the encryption function.
*
* @param uint32_t len : Length to write, should be 32 bytes aligned.
*
* @return SPI_FLASH_RESULT_OK : Encrypto write OK.
* @return SPI_FLASH_RESULT_OK : Data written successfully.
* SPI_FLASH_RESULT_ERR : Encrypto write error.
* SPI_FLASH_RESULT_TIMEOUT : Encrypto write timeout.
*/

4
components/esp32/include/soc/soc.h
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@@ -79,8 +79,8 @@
//set bits of register controlled by mask
#define REG_SET_BITS(_r, _b, _m) (*(volatile uint32_t*)(_r) = (*(volatile uint32_t*)(_r) & ~(_m)) | ((_b) & (_m)))
//get field from register, used when _f is not left shifted by _f##_S
#define REG_GET_FIELD(_r, _f) ((REG_READ(_r) >> (_f##_S)) & (_f))
//get field from register, uses field _S & _V to determine mask
#define REG_GET_FIELD(_r, _f) ((REG_READ(_r) >> (_f##_S)) & (_f##_V))
//set field to register, used when _f is not left shifted by _f##_S
#define REG_SET_FIELD(_r, _f, _v) (REG_WRITE((_r),((REG_READ(_r) & ~((_f) << (_f##_S)))|(((_v) & (_f))<<(_f##_S)))))

2
components/esp32/include/soc/wdev_reg.h
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@@ -14,5 +14,7 @@
#pragma once
#include "soc.h"
/* Hardware random number generator register */
#define WDEV_RND_REG 0x60035144