124 lines
3.3 KiB
C
124 lines
3.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2020 MediaTek Inc.
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*/
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#ifndef _EMMC_RPMB_H
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#define _EMMC_RPMB_H
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#include <linux/mmc/ioctl.h>
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#include <linux/mmc/card.h>
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#if defined(CONFIG_MMC_MTK_PRO)
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extern struct msdc_host *mtk_msdc_host[];
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#endif
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/************************************************************************
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*
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* RPMB IOCTL interface.
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*
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***********************************************************************/
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#define RPMB_IOCTL_PROGRAM_KEY 1
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#define RPMB_IOCTL_WRITE_DATA 3
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#define RPMB_IOCTL_READ_DATA 4
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#if (defined(CONFIG_MICROTRUST_TEE_SUPPORT))
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#define RPMB_MULTI_BLOCK_ACCESS 1
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#if RPMB_MULTI_BLOCK_ACCESS
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#define MAX_RPMB_TRANSFER_BLK 16
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/* 8KB(16blks) per requests */
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#define MAX_RPMB_REQUEST_SIZE (512*MAX_RPMB_TRANSFER_BLK)
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#else
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#define MAX_RPMB_TRANSFER_BLK 1
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/* 512B(1blks) per requests */
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#define MAX_RPMB_REQUEST_SIZE (512*MAX_RPMB_TRANSFER_BLK)
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#endif
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#define RPMB_IOCTL_SOTER_WRITE_DATA 5
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#define RPMB_IOCTL_SOTER_READ_DATA 6
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#define RPMB_IOCTL_SOTER_GET_CNT 7
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#define RPMB_IOCTL_SOTER_GET_WR_SIZE 8
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struct rpmb_infor {
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unsigned int size;
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unsigned char *data_frame;
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};
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#endif /* CONFIG_MICROTRUST_TEE_SUPPORT */
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struct rpmb_ioc_param {
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unsigned char *key;
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unsigned char *data;
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unsigned int data_len;
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unsigned short addr;
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unsigned char *hmac;
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unsigned int hmac_len;
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};
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/***********************************************************************/
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#define RPMB_SZ_STUFF 196
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#define RPMB_SZ_MAC 32
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#define RPMB_SZ_DATA 256
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#define RPMB_SZ_NONCE 16
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#define RPMB_IOC_MAX_BYTES (512L * 256) /* sync from linux/mmc/ioctl.h */
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struct s_rpmb {
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unsigned char stuff[RPMB_SZ_STUFF];
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unsigned char mac[RPMB_SZ_MAC];
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unsigned char data[RPMB_SZ_DATA];
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unsigned char nonce[RPMB_SZ_NONCE];
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unsigned int write_counter;
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unsigned short address;
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unsigned short block_count;
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unsigned short result;
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unsigned short request;
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};
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enum {
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RPMB_SUCCESS = 0,
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RPMB_HMAC_ERROR,
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RPMB_RESULT_ERROR,
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RPMB_WC_ERROR,
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RPMB_NONCE_ERROR,
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RPMB_ALLOC_ERROR,
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RPMB_TRANSFER_NOT_COMPLETE,
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};
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#define RPMB_REQ 1 /* RPMB request mark */
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#define RPMB_RESP (1 << 1)/* RPMB response mark */
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#define RPMB_AVAILABLE_SECTORS 8 /* 4K page size */
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#define RPMB_TYPE_BEG 510
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#define RPMB_RES_BEG 508
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#define RPMB_BLKS_BEG 506
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#define RPMB_ADDR_BEG 504
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#define RPMB_WCOUNTER_BEG 500
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#define RPMB_NONCE_BEG 484
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#define RPMB_DATA_BEG 228
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#define RPMB_MAC_BEG 196
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struct emmc_rpmb_req {
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__u16 type; /* RPMB request type */
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__u16 *result; /* response or request result */
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__u16 blk_cnt; /* Number of blocks(half sector 256B) */
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__u16 addr; /* data address */
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__u32 *wc; /* write counter */
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__u8 *nonce; /* Ramdom number */
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__u8 *data; /* Buffer of the user data */
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__u8 *mac; /* Message Authentication Code */
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__u8 *data_frame;
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};
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int mmc_rpmb_register(struct mmc_host *mmc);
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int mmc_rpmb_set_key(struct mmc_card *card, void *key);
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int mmc_rpmb_read(struct mmc_card *card, u8 *buf, u16 blk, u16 cnt, void *key);
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int mmc_rpmb_write(struct mmc_card *card, u8 *buf, u16 blk, u16 cnt, void *key);
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extern void emmc_rpmb_set_host(void *mmc_host);
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#endif
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