Chia-Wei Wang | 8a523aa | 2021-07-30 09:08:04 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * Copyright (c) 2021 ASPEED Technology Inc. |
| 4 | * Author: ChiaWei Wang <chiawei_wang@aspeedtech.com> |
| 5 | */ |
| 6 | #include <config.h> |
| 7 | #include <common.h> |
| 8 | #include <dm.h> |
| 9 | #include <log.h> |
| 10 | #include <malloc.h> |
| 11 | #include <watchdog.h> |
| 12 | #include <u-boot/hash.h> |
| 13 | #include <u-boot/crc.h> |
| 14 | #include <u-boot/md5.h> |
| 15 | #include <u-boot/sha1.h> |
| 16 | #include <u-boot/sha256.h> |
| 17 | #include <u-boot/sha512.h> |
| 18 | |
| 19 | /* CRC16-CCITT */ |
| 20 | static void hash_init_crc16_ccitt(void *ctx) |
| 21 | { |
| 22 | *((uint16_t *)ctx) = 0; |
| 23 | } |
| 24 | |
| 25 | static void hash_update_crc16_ccitt(void *ctx, const void *ibuf, uint32_t ilen) |
| 26 | { |
| 27 | *((uint16_t *)ctx) = crc16_ccitt(*((uint16_t *)ctx), ibuf, ilen); |
| 28 | } |
| 29 | |
| 30 | static void hash_finish_crc16_ccitt(void *ctx, void *obuf) |
| 31 | { |
| 32 | *((uint16_t *)obuf) = *((uint16_t *)ctx); |
| 33 | } |
| 34 | |
| 35 | /* CRC32 */ |
| 36 | static void hash_init_crc32(void *ctx) |
| 37 | { |
| 38 | *((uint32_t *)ctx) = 0; |
| 39 | } |
| 40 | |
| 41 | static void hash_update_crc32(void *ctx, const void *ibuf, uint32_t ilen) |
| 42 | { |
| 43 | *((uint32_t *)ctx) = crc32(*((uint32_t *)ctx), ibuf, ilen); |
| 44 | } |
| 45 | |
| 46 | static void hash_finish_crc32(void *ctx, void *obuf) |
| 47 | { |
| 48 | *((uint32_t *)obuf) = *((uint32_t *)ctx); |
| 49 | } |
| 50 | |
| 51 | /* MD5 */ |
| 52 | static void hash_init_md5(void *ctx) |
| 53 | { |
| 54 | MD5Init((struct MD5Context *)ctx); |
| 55 | } |
| 56 | |
| 57 | static void hash_update_md5(void *ctx, const void *ibuf, uint32_t ilen) |
| 58 | { |
| 59 | MD5Update((struct MD5Context *)ctx, ibuf, ilen); |
| 60 | } |
| 61 | |
| 62 | static void hash_finish_md5(void *ctx, void *obuf) |
| 63 | { |
| 64 | MD5Final(obuf, (struct MD5Context *)ctx); |
| 65 | } |
| 66 | |
| 67 | /* SHA1 */ |
| 68 | static void hash_init_sha1(void *ctx) |
| 69 | { |
| 70 | sha1_starts((sha1_context *)ctx); |
| 71 | } |
| 72 | |
| 73 | static void hash_update_sha1(void *ctx, const void *ibuf, uint32_t ilen) |
| 74 | { |
| 75 | sha1_update((sha1_context *)ctx, ibuf, ilen); |
| 76 | } |
| 77 | |
| 78 | static void hash_finish_sha1(void *ctx, void *obuf) |
| 79 | { |
| 80 | sha1_finish((sha1_context *)ctx, obuf); |
| 81 | } |
| 82 | |
| 83 | /* SHA256 */ |
| 84 | static void hash_init_sha256(void *ctx) |
| 85 | { |
| 86 | sha256_starts((sha256_context *)ctx); |
| 87 | } |
| 88 | |
| 89 | static void hash_update_sha256(void *ctx, const void *ibuf, uint32_t ilen) |
| 90 | { |
| 91 | sha256_update((sha256_context *)ctx, ibuf, ilen); |
| 92 | } |
| 93 | |
| 94 | static void hash_finish_sha256(void *ctx, void *obuf) |
| 95 | { |
| 96 | sha256_finish((sha256_context *)ctx, obuf); |
| 97 | } |
| 98 | |
| 99 | /* SHA384 */ |
| 100 | static void hash_init_sha384(void *ctx) |
| 101 | { |
| 102 | sha384_starts((sha512_context *)ctx); |
| 103 | } |
| 104 | |
| 105 | static void hash_update_sha384(void *ctx, const void *ibuf, uint32_t ilen) |
| 106 | { |
| 107 | sha384_update((sha512_context *)ctx, ibuf, ilen); |
| 108 | } |
| 109 | |
| 110 | static void hash_finish_sha384(void *ctx, void *obuf) |
| 111 | { |
| 112 | sha384_finish((sha512_context *)ctx, obuf); |
| 113 | } |
| 114 | |
| 115 | /* SHA512 */ |
| 116 | static void hash_init_sha512(void *ctx) |
| 117 | { |
| 118 | sha512_starts((sha512_context *)ctx); |
| 119 | } |
| 120 | |
| 121 | static void hash_update_sha512(void *ctx, const void *ibuf, uint32_t ilen) |
| 122 | { |
| 123 | sha512_update((sha512_context *)ctx, ibuf, ilen); |
| 124 | } |
| 125 | |
| 126 | static void hash_finish_sha512(void *ctx, void *obuf) |
| 127 | { |
| 128 | sha512_finish((sha512_context *)ctx, obuf); |
| 129 | } |
| 130 | |
| 131 | struct sw_hash_ctx { |
| 132 | enum HASH_ALGO algo; |
| 133 | uint8_t algo_ctx[]; |
| 134 | }; |
| 135 | |
| 136 | struct sw_hash_impl { |
| 137 | void (*init)(void *ctx); |
| 138 | void (*update)(void *ctx, const void *ibuf, uint32_t ilen); |
| 139 | void (*finish)(void *ctx, void *obuf); |
| 140 | uint32_t ctx_alloc_sz; |
| 141 | }; |
| 142 | |
| 143 | static struct sw_hash_impl sw_hash_impl[HASH_ALGO_NUM] = { |
| 144 | [HASH_ALGO_CRC16_CCITT] = { |
| 145 | .init = hash_init_crc16_ccitt, |
| 146 | .update = hash_update_crc16_ccitt, |
| 147 | .finish = hash_finish_crc16_ccitt, |
| 148 | .ctx_alloc_sz = sizeof(uint16_t), |
| 149 | }, |
| 150 | |
| 151 | [HASH_ALGO_CRC32] = { |
| 152 | .init = hash_init_crc32, |
| 153 | .update = hash_update_crc32, |
| 154 | .finish = hash_finish_crc32, |
| 155 | .ctx_alloc_sz = sizeof(uint32_t), |
| 156 | }, |
| 157 | |
| 158 | [HASH_ALGO_MD5] = { |
| 159 | .init = hash_init_md5, |
| 160 | .update = hash_update_md5, |
| 161 | .finish = hash_finish_md5, |
| 162 | .ctx_alloc_sz = sizeof(struct MD5Context), |
| 163 | }, |
| 164 | |
| 165 | [HASH_ALGO_SHA1] = { |
| 166 | .init = hash_init_sha1, |
| 167 | .update = hash_update_sha1, |
| 168 | .finish = hash_finish_sha1, |
| 169 | .ctx_alloc_sz = sizeof(sha1_context), |
| 170 | }, |
| 171 | |
| 172 | [HASH_ALGO_SHA256] = { |
| 173 | .init = hash_init_sha256, |
| 174 | .update = hash_update_sha256, |
| 175 | .finish = hash_finish_sha256, |
| 176 | .ctx_alloc_sz = sizeof(sha256_context), |
| 177 | }, |
| 178 | |
| 179 | [HASH_ALGO_SHA384] = { |
| 180 | .init = hash_init_sha384, |
| 181 | .update = hash_update_sha384, |
| 182 | .finish = hash_finish_sha384, |
| 183 | .ctx_alloc_sz = sizeof(sha512_context), |
| 184 | }, |
| 185 | |
| 186 | [HASH_ALGO_SHA512] = { |
| 187 | .init = hash_init_sha512, |
| 188 | .update = hash_update_sha512, |
| 189 | .finish = hash_finish_sha512, |
| 190 | .ctx_alloc_sz = sizeof(sha512_context), |
| 191 | }, |
| 192 | }; |
| 193 | |
| 194 | static int sw_hash_init(struct udevice *dev, enum HASH_ALGO algo, void **ctxp) |
| 195 | { |
| 196 | struct sw_hash_ctx *hash_ctx; |
| 197 | struct sw_hash_impl *hash_impl = &sw_hash_impl[algo]; |
| 198 | |
| 199 | hash_ctx = malloc(sizeof(hash_ctx->algo) + hash_impl->ctx_alloc_sz); |
| 200 | if (!hash_ctx) |
| 201 | return -ENOMEM; |
| 202 | |
| 203 | hash_ctx->algo = algo; |
| 204 | |
| 205 | hash_impl->init(hash_ctx->algo_ctx); |
| 206 | |
| 207 | *ctxp = hash_ctx; |
| 208 | |
| 209 | return 0; |
| 210 | } |
| 211 | |
| 212 | static int sw_hash_update(struct udevice *dev, void *ctx, const void *ibuf, uint32_t ilen) |
| 213 | { |
| 214 | struct sw_hash_ctx *hash_ctx = ctx; |
| 215 | struct sw_hash_impl *hash_impl = &sw_hash_impl[hash_ctx->algo]; |
| 216 | |
| 217 | hash_impl->update(hash_ctx->algo_ctx, ibuf, ilen); |
| 218 | |
| 219 | return 0; |
| 220 | } |
| 221 | |
| 222 | static int sw_hash_finish(struct udevice *dev, void *ctx, void *obuf) |
| 223 | { |
| 224 | struct sw_hash_ctx *hash_ctx = ctx; |
| 225 | struct sw_hash_impl *hash_impl = &sw_hash_impl[hash_ctx->algo]; |
| 226 | |
| 227 | hash_impl->finish(hash_ctx->algo_ctx, obuf); |
| 228 | |
| 229 | free(ctx); |
| 230 | |
| 231 | return 0; |
| 232 | } |
| 233 | |
| 234 | static int sw_hash_digest_wd(struct udevice *dev, enum HASH_ALGO algo, |
| 235 | const void *ibuf, const uint32_t ilen, |
| 236 | void *obuf, uint32_t chunk_sz) |
| 237 | { |
| 238 | int rc; |
| 239 | void *ctx; |
| 240 | const void *cur, *end; |
| 241 | uint32_t chunk; |
| 242 | |
| 243 | rc = sw_hash_init(dev, algo, &ctx); |
| 244 | if (rc) |
| 245 | return rc; |
| 246 | |
Simon Glass | 83b8087 | 2023-02-05 15:40:07 -0700 | [diff] [blame^] | 247 | if (IS_ENABLED(CONFIG_HW_WATCHDOG) || CONFIG_IS_ENABLED(WATCHDOG)) { |
Chia-Wei Wang | 8a523aa | 2021-07-30 09:08:04 +0800 | [diff] [blame] | 248 | cur = ibuf; |
| 249 | end = ibuf + ilen; |
| 250 | |
| 251 | while (cur < end) { |
| 252 | chunk = end - cur; |
| 253 | if (chunk > chunk_sz) |
| 254 | chunk = chunk_sz; |
| 255 | |
| 256 | rc = sw_hash_update(dev, ctx, cur, chunk); |
| 257 | if (rc) |
| 258 | return rc; |
| 259 | |
| 260 | cur += chunk; |
Stefan Roese | 80877fa | 2022-09-02 14:10:46 +0200 | [diff] [blame] | 261 | schedule(); |
Chia-Wei Wang | 8a523aa | 2021-07-30 09:08:04 +0800 | [diff] [blame] | 262 | } |
| 263 | } else { |
| 264 | rc = sw_hash_update(dev, ctx, ibuf, ilen); |
| 265 | if (rc) |
| 266 | return rc; |
| 267 | } |
| 268 | |
| 269 | rc = sw_hash_finish(dev, ctx, obuf); |
| 270 | if (rc) |
| 271 | return rc; |
| 272 | |
| 273 | return 0; |
| 274 | } |
| 275 | |
| 276 | static int sw_hash_digest(struct udevice *dev, enum HASH_ALGO algo, |
| 277 | const void *ibuf, const uint32_t ilen, |
| 278 | void *obuf) |
| 279 | { |
| 280 | /* re-use the watchdog version with input length as the chunk_sz */ |
| 281 | return sw_hash_digest_wd(dev, algo, ibuf, ilen, obuf, ilen); |
| 282 | } |
| 283 | |
| 284 | static const struct hash_ops hash_ops_sw = { |
| 285 | .hash_init = sw_hash_init, |
| 286 | .hash_update = sw_hash_update, |
| 287 | .hash_finish = sw_hash_finish, |
| 288 | .hash_digest_wd = sw_hash_digest_wd, |
| 289 | .hash_digest = sw_hash_digest, |
| 290 | }; |
| 291 | |
| 292 | U_BOOT_DRIVER(hash_sw) = { |
| 293 | .name = "hash_sw", |
| 294 | .id = UCLASS_HASH, |
| 295 | .ops = &hash_ops_sw, |
| 296 | .flags = DM_FLAG_PRE_RELOC, |
| 297 | }; |
| 298 | |
| 299 | U_BOOT_DRVINFO(hash_sw) = { |
| 300 | .name = "hash_sw", |
| 301 | }; |