include/fsl_validate.h

   1 /*
   2  * Copyright 2015 Freescale Semiconductor, Inc.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #ifndef _FSL_VALIDATE_H_
   8 #define _FSL_VALIDATE_H_
   9
  10 #include <fsl_sec.h>
  11 #include <fsl_sec_mon.h>
  12 #include <command.h>
  13 #include <linux/types.h>
  14
  15 #define WORD_SIZE 4
  16
  17 /* Minimum and maximum size of RSA signature length in bits */
  18 #define KEY_SIZE       4096
  19 #define KEY_SIZE_BYTES (KEY_SIZE/8)
  20 #define KEY_SIZE_WORDS (KEY_SIZE_BYTES/(WORD_SIZE))
  21
  22 extern struct jobring jr;
  23
  24 #ifdef CONFIG_KEY_REVOCATION
  25 /* Srk table and key revocation check */
  26 #define SRK_FLAG        0x01
  27 #define UNREVOCABLE_KEY 4
  28 #define ALIGN_REVOC_KEY 3
  29 #define MAX_KEY_ENTRIES 4
  30 #endif
  31
  32 /* Barker code size in bytes */
  33 #define ESBC_BARKER_LEN 4       /* barker code length in ESBC uboot client */
  34                                 /* header */
  35
  36 /* No-error return values */
  37 #define ESBC_VALID_HDR  0       /* header is valid */
  38
  39 /* Maximum number of SG entries allowed */
  40 #define MAX_SG_ENTRIES  8
  41
  42 /*
  43  * ESBC uboot client header structure.
  44  * The struct contain the following fields
  45  * barker code
  46  * public key offset
  47  * pub key length
  48  * signature offset
  49  * length of the signature
  50  * ptr to SG table
  51  * no of entries in SG table
  52  * esbc ptr
  53  * size of esbc
  54  * esbc entry point
  55  * Scatter gather flag
  56  * UID flag
  57  * FSL UID
  58  * OEM UID
  59  * Here, pub key is modulus concatenated with exponent
  60  * of equal length
  61  */
  62 struct fsl_secboot_img_hdr {
  63         u8 barker[ESBC_BARKER_LEN];     /* barker code */
  64         union {
  65                 u32 pkey;               /* public key offset */
  66 #ifdef CONFIG_KEY_REVOCATION
  67                 u32 srk_tbl_off;
  68 #endif
  69         };
  70
  71         union {
  72                 u32 key_len;            /* pub key length in bytes */
  73 #ifdef CONFIG_KEY_REVOCATION
  74                 struct {
  75                         u32 srk_table_flag:8;
  76                         u32 srk_sel:8;
  77                         u32 num_srk:16;
  78                 } len_kr;
  79 #endif
  80         };
  81
  82         u32 psign;              /* signature offset */
  83         u32 sign_len;           /* length of the signature in bytes */
  84         union {
  85                 u32 psgtable;   /* ptr to SG table */
  86 #ifndef CONFIG_ESBC_ADDR_64BIT
  87                 u32 pimg;       /* ptr to ESBC client image */
  88 #endif
  89         };
  90         union {
  91                 u32 sg_entries; /* no of entries in SG table */
  92                 u32 img_size;   /* ESBC client image size in bytes */
  93         };
  94         u32 img_start;          /* ESBC client entry point */
  95         u32 sg_flag;            /* Scatter gather flag */
  96         u32 uid_flag;
  97         u32 fsl_uid_0;
  98         u32 oem_uid_0;
  99         u32 reserved1[2];
 100         u32 fsl_uid_1;
 101         u32 oem_uid_1;
 102         union {
 103                 u32 reserved2[2];
 104 #ifdef CONFIG_ESBC_ADDR_64BIT
 105                 u64 pimg64;     /* 64 bit pointer to ESBC Image */
 106 #endif
 107         };
 108         u32 ie_flag;
 109         u32 ie_key_sel;
 110 };
 111
 112 #if defined(CONFIG_FSL_ISBC_KEY_EXT)
 113 struct ie_key_table {
 114         u32 key_len;
 115         u8 pkey[2 * KEY_SIZE_BYTES];
 116 };
 117
 118 struct ie_key_info {
 119         uint32_t key_revok;
 120         uint32_t num_keys;
 121         struct ie_key_table ie_key_tbl[32];
 122 };
 123 #endif
 124
 125 #ifdef CONFIG_KEY_REVOCATION
 126 struct srk_table {
 127         u32 key_len;
 128         u8 pkey[2 * KEY_SIZE_BYTES];
 129 };
 130 #endif
 131
 132 /*
 133  * SG table.
 134  */
 135 #if defined(CONFIG_FSL_TRUST_ARCH_v1) && defined(CONFIG_FSL_CORENET)
 136 /*
 137  * This struct contains the following fields
 138  * length of the segment
 139  * source address
 140  */
 141 struct fsl_secboot_sg_table {
 142         u32 len;                /* length of the segment in bytes */
 143         u32 src_addr;           /* ptr to the data segment */
 144 };
 145 #else
 146 /*
 147  * This struct contains the following fields
 148  * length of the segment
 149  * Destination Target ID
 150  * source address
 151  * destination address
 152  */
 153 struct fsl_secboot_sg_table {
 154         u32 len;
 155         u32 trgt_id;
 156         u32 src_addr;
 157         u32 dst_addr;
 158 };
 159 #endif
 160
 161 /*
 162  * ESBC private structure.
 163  * Private structure used by ESBC to store following fields
 164  * ESBC client key
 165  * ESBC client key hash
 166  * ESBC client Signature
 167  * Encoded hash recovered from signature
 168  * Encoded hash of ESBC client header plus ESBC client image
 169  */
 170 struct fsl_secboot_img_priv {
 171         uint32_t hdr_location;
 172         u32 ie_addr;
 173         u32 key_len;
 174         struct fsl_secboot_img_hdr hdr;
 175
 176         u8 img_key[2 * KEY_SIZE_BYTES]; /* ESBC client key */
 177         u8 img_key_hash[32];    /* ESBC client key hash */
 178
 179 #ifdef CONFIG_KEY_REVOCATION
 180         struct srk_table srk_tbl[MAX_KEY_ENTRIES];
 181 #endif
 182         u8 img_sign[KEY_SIZE_BYTES];            /* ESBC client signature */
 183
 184         u8 img_encoded_hash[KEY_SIZE_BYTES];    /* EM wrt RSA PKCSv1.5  */
 185                                                 /* Includes hash recovered after
 186                                                  * signature verification
 187                                                  */
 188
 189         u8 img_encoded_hash_second[KEY_SIZE_BYTES];/* EM' wrt RSA PKCSv1.5 */
 190                                                 /* Includes hash of
 191                                                  * ESBC client header plus
 192                                                  * ESBC client image
 193                                                  */
 194
 195         struct fsl_secboot_sg_table sgtbl[MAX_SG_ENTRIES];      /* SG table */
 196         u32 ehdrloc;            /* ESBC client location */
 197 };
 198
 199 int fsl_secboot_validate(cmd_tbl_t *cmdtp, int flag, int argc,
 200                 char * const argv[]);
 201 int fsl_secboot_blob_encap(cmd_tbl_t *cmdtp, int flag, int argc,
 202         char * const argv[]);
 203 int fsl_secboot_blob_decap(cmd_tbl_t *cmdtp, int flag, int argc,
 204         char * const argv[]);
 205
 206 #endif