fsl_avbkey.h
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/*
* Copyright (C) 2016 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __FSL_AVBKEY_H__
#define __FSL_AVBKEY_H__
#include <mmc.h>
#define CAAM_PAD 48
#define AVB_PUBKY_FLAG 0xABAB
#define AVB_PUBKY_OFFSET 0x1000
#define AVB_RBIDX_FLAG 0xCDCD
#define AVB_RBIDX_START 0x2000
#define AVB_RBIDX_ALIGN 0x1000
#define AVB_RBIDX_LEN 0x08
#define AVB_RBIDX_INITVAL 0
#ifdef CONFIG_AVB_ATX
#define ATX_RBIDX_FLAG 0xEFEF
#define ATX_RBIDX_START 0x22000
#define ATX_RBIDX_ALIGN 0x1000
#define ATX_RBIDX_LEN 0x08
#define ATX_RBIDX_INITVAL 0
#endif
#define AVB_KBLB_MAGIC "\0KBLB!"
#define AVB_KBLB_MAGIC_LEN 6
#if defined(CONFIG_AVB_ATX) && defined(CONFIG_DUAL_BOOTLOADER)
#define BL_RBINDEX_MAGIC "BL_RBINDEX"
#define BL_RBINDEX_MAGIC_LEN 11
struct bl_rbindex_package {
char magic[BL_RBINDEX_MAGIC_LEN];
uint32_t rbindex;
};
#endif
#ifndef CONFIG_AVB_ATX
#define RPMB_KEY_MAGIC "RPMB"
#endif
#ifdef CONFIG_AVB_ATX
#define ATX_FUSE_BANK_NUM 4
#define ATX_FUSE_BANK_MASK 0xFFFF
#define ATX_HASH_LENGTH 14
#endif
#define RESULT_ERROR -1
#define RESULT_OK 0
struct kblb_tag {
uint32_t flag;
uint32_t offset;
uint32_t len;
};
typedef struct kblb_tag kblb_tag_t;
struct kblb_hdr {
/* avbkey partition magic */
char magic[AVB_KBLB_MAGIC_LEN];
/* Rollback index for bootloader is managed by SPL and
* will be stored in RPMB.
*/
#if defined(CONFIG_DUAL_BOOTLOADER) && defined(CONFIG_SPL_BUILD)
kblb_tag_t bootloader_rbk_tags;
#endif
/* public key keyblb tag */
kblb_tag_t pubk_tag;
/* vbmeta rollback index keyblb tag */
kblb_tag_t rbk_tags[AVB_MAX_NUMBER_OF_ROLLBACK_INDEX_LOCATIONS];
#ifdef CONFIG_AVB_ATX
/* Android Things key versions rollback index keyblb tag */
kblb_tag_t atx_rbk_tags[AVB_MAX_NUMBER_OF_ROLLBACK_INDEX_LOCATIONS];
#endif
};
typedef struct kblb_hdr kblb_hdr_t;
#define RPMBKEY_LEN (32 + CAAM_PAD)
#define KEYPACK_MAGIC "!KS"
struct keyslot_package
{
char magic[4];
unsigned int rpmb_keyblob_len;
unsigned char rpmb_keyblob[RPMBKEY_LEN];
};
int gen_rpmb_key(struct keyslot_package *kp);
int read_keyslot_package(struct keyslot_package* kp);
void fill_secure_keyslot_package(struct keyslot_package *kp);
int rpmb_init(void);
int rpmb_read(struct mmc *mmc, uint8_t *buffer,
size_t num_bytes,int64_t offset);
int rpmb_write(struct mmc *mmc, uint8_t *buffer, size_t num_bytes,
int64_t offset);
int check_rpmb_blob(struct mmc *mmc);
bool rpmbkey_is_set(void);
int fsl_fuse_write(const uint32_t *buffer, uint32_t length, uint32_t offset);
int fsl_fuse_read(uint32_t *buffer, uint32_t length, uint32_t offset);
int permanent_attributes_sha256_hash(unsigned char* output);
struct mmc *get_mmc(void);
#endif