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/*
* Copyright 2015 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _FSL_VALIDATE_H_
#define _FSL_VALIDATE_H_
#include <fsl_sec.h>
#include <fsl_sec_mon.h>
#include <command.h>
#include <linux/types.h>
#define WORD_SIZE 4
/* Minimum and maximum size of RSA signature length in bits */
#define KEY_SIZE 4096
#define KEY_SIZE_BYTES (KEY_SIZE/8)
#define KEY_SIZE_WORDS (KEY_SIZE_BYTES/(WORD_SIZE))
extern struct jobring jr;
#ifdef CONFIG_KEY_REVOCATION
/* Srk table and key revocation check */
#define SRK_FLAG 0x01
#define UNREVOCABLE_KEY 4
#define ALIGN_REVOC_KEY 3
#define MAX_KEY_ENTRIES 4
#endif
/* Barker code size in bytes */
#define ESBC_BARKER_LEN 4 /* barker code length in ESBC uboot client */
/* header */
/* No-error return values */
#define ESBC_VALID_HDR 0 /* header is valid */
/* Maximum number of SG entries allowed */
#define MAX_SG_ENTRIES 8
/*
* ESBC uboot client header structure.
* The struct contain the following fields
* barker code
* public key offset
* pub key length
* signature offset
* length of the signature
* ptr to SG table
* no of entries in SG table
* esbc ptr
* size of esbc
* esbc entry point
* Scatter gather flag
* UID flag
* FSL UID
* OEM UID
* Here, pub key is modulus concatenated with exponent
* of equal length
*/
struct fsl_secboot_img_hdr {
u8 barker[ESBC_BARKER_LEN]; /* barker code */
union {
u32 pkey; /* public key offset */
#ifdef CONFIG_KEY_REVOCATION
u32 srk_tbl_off;
#endif
};
union {
u32 key_len; /* pub key length in bytes */
#ifdef CONFIG_KEY_REVOCATION
struct {
u32 srk_table_flag:8;
u32 srk_sel:8;
u32 num_srk:16;
} len_kr;
#endif
};
u32 psign; /* signature offset */
u32 sign_len; /* length of the signature in bytes */
union {
u32 psgtable; /* ptr to SG table */
#ifndef CONFIG_ESBC_ADDR_64BIT
u32 pimg; /* ptr to ESBC client image */
#endif
};
union {
u32 sg_entries; /* no of entries in SG table */
u32 img_size; /* ESBC client image size in bytes */
};
u32 img_start; /* ESBC client entry point */
u32 sg_flag; /* Scatter gather flag */
u32 uid_flag;
u32 fsl_uid_0;
u32 oem_uid_0;
u32 reserved1[2];
u32 fsl_uid_1;
u32 oem_uid_1;
union {
u32 reserved2[2];
#ifdef CONFIG_ESBC_ADDR_64BIT
u64 pimg64; /* 64 bit pointer to ESBC Image */
#endif
};
u32 ie_flag;
u32 ie_key_sel;
};
#if defined(CONFIG_FSL_ISBC_KEY_EXT)
struct ie_key_table {
u32 key_len;
u8 pkey[2 * KEY_SIZE_BYTES];
};
struct ie_key_info {
uint32_t key_revok;
uint32_t num_keys;
struct ie_key_table ie_key_tbl[32];
};
#endif
#ifdef CONFIG_KEY_REVOCATION
struct srk_table {
u32 key_len;
u8 pkey[2 * KEY_SIZE_BYTES];
};
#endif
/*
* SG table.
*/
#if defined(CONFIG_FSL_TRUST_ARCH_v1) && defined(CONFIG_FSL_CORENET)
/*
* This struct contains the following fields
* length of the segment
* source address
*/
struct fsl_secboot_sg_table {
u32 len; /* length of the segment in bytes */
u32 src_addr; /* ptr to the data segment */
};
#else
/*
* This struct contains the following fields
* length of the segment
* Destination Target ID
* source address
* destination address
*/
struct fsl_secboot_sg_table {
u32 len;
u32 trgt_id;
u32 src_addr;
u32 dst_addr;
};
#endif
/*
* ESBC private structure.
* Private structure used by ESBC to store following fields
* ESBC client key
* ESBC client key hash
* ESBC client Signature
* Encoded hash recovered from signature
* Encoded hash of ESBC client header plus ESBC client image
*/
struct fsl_secboot_img_priv {
uint32_t hdr_location;
u32 ie_addr;
u32 key_len;
struct fsl_secboot_img_hdr hdr;
u8 img_key[2 * KEY_SIZE_BYTES]; /* ESBC client key */
u8 img_key_hash[32]; /* ESBC client key hash */
#ifdef CONFIG_KEY_REVOCATION
struct srk_table srk_tbl[MAX_KEY_ENTRIES];
#endif
u8 img_sign[KEY_SIZE_BYTES]; /* ESBC client signature */
u8 img_encoded_hash[KEY_SIZE_BYTES]; /* EM wrt RSA PKCSv1.5 */
/* Includes hash recovered after
* signature verification
*/
u8 img_encoded_hash_second[KEY_SIZE_BYTES];/* EM' wrt RSA PKCSv1.5 */
/* Includes hash of
* ESBC client header plus
* ESBC client image
*/
struct fsl_secboot_sg_table sgtbl[MAX_SG_ENTRIES]; /* SG table */
uintptr_t ehdrloc; /* ESBC Header location */
uintptr_t img_addr; /* ESBC Image Location */
uint32_t img_size; /* ESBC Image Size */
};
int fsl_secboot_validate(uintptr_t haddr, char *arg_hash_str,
uintptr_t img_loc);
int fsl_secboot_blob_encap(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[]);
int fsl_secboot_blob_decap(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[]);
int fsl_check_boot_mode_secure(void);
int fsl_setenv_chain_of_trust(void);
#endif
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