1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (c) 2016 Toradex, Inc. 4 */ 5 6 #include <common.h> 7 #include "tdx-cfg-block.h" 8 9 #if defined(CONFIG_TARGET_APALIS_IMX6) || defined(CONFIG_TARGET_COLIBRI_IMX6) 10 #include <asm/arch/sys_proto.h> 11 #else 12 #define is_cpu_type(cpu) (0) 13 #endif 14 #if defined(CONFIG_CPU_PXA27X) 15 #include <asm/arch-pxa/pxa.h> 16 #else 17 #define cpu_is_pxa27x(cpu) (0) 18 #endif 19 #include <cli.h> 20 #include <console.h> 21 #include <flash.h> 22 #include <malloc.h> 23 #include <mmc.h> 24 #include <nand.h> 25 #include <asm/mach-types.h> 26 27 DECLARE_GLOBAL_DATA_PTR; 28 29 #define TAG_VALID 0xcf01 30 #define TAG_MAC 0x0000 31 #define TAG_HW 0x0008 32 #define TAG_INVALID 0xffff 33 34 #define TAG_FLAG_VALID 0x1 35 36 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC) 37 #define TDX_CFG_BLOCK_MAX_SIZE 512 38 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND) 39 #define TDX_CFG_BLOCK_MAX_SIZE 64 40 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR) 41 #define TDX_CFG_BLOCK_MAX_SIZE 64 42 #else 43 #error Toradex config block location not set 44 #endif 45 46 struct toradex_tag { 47 u32 len:14; 48 u32 flags:2; 49 u32 id:16; 50 }; 51 52 bool valid_cfgblock; 53 struct toradex_hw tdx_hw_tag; 54 struct toradex_eth_addr tdx_eth_addr; 55 u32 tdx_serial; 56 57 const char * const toradex_modules[] = { 58 [0] = "UNKNOWN MODULE", 59 [1] = "Colibri PXA270 312MHz", 60 [2] = "Colibri PXA270 520MHz", 61 [3] = "Colibri PXA320 806MHz", 62 [4] = "Colibri PXA300 208MHz", 63 [5] = "Colibri PXA310 624MHz", 64 [6] = "Colibri PXA320 806MHz IT", 65 [7] = "Colibri PXA300 208MHz XT", 66 [8] = "Colibri PXA270 312MHz", 67 [9] = "Colibri PXA270 520MHz", 68 [10] = "Colibri VF50 128MB", /* not currently on sale */ 69 [11] = "Colibri VF61 256MB", 70 [12] = "Colibri VF61 256MB IT", 71 [13] = "Colibri VF50 128MB IT", 72 [14] = "Colibri iMX6 Solo 256MB", 73 [15] = "Colibri iMX6 DualLite 512MB", 74 [16] = "Colibri iMX6 Solo 256MB IT", 75 [17] = "Colibri iMX6 DualLite 512MB IT", 76 [18] = "UNKNOWN MODULE", 77 [19] = "UNKNOWN MODULE", 78 [20] = "Colibri T20 256MB", 79 [21] = "Colibri T20 512MB", 80 [22] = "Colibri T20 512MB IT", 81 [23] = "Colibri T30 1GB", 82 [24] = "Colibri T20 256MB IT", 83 [25] = "Apalis T30 2GB", 84 [26] = "Apalis T30 1GB", 85 [27] = "Apalis iMX6 Quad 1GB", 86 [28] = "Apalis iMX6 Quad 2GB IT", 87 [29] = "Apalis iMX6 Dual 512MB", 88 [30] = "Colibri T30 1GB IT", 89 [31] = "Apalis T30 1GB IT", 90 [32] = "Colibri iMX7 Solo 256MB", 91 [33] = "Colibri iMX7 Dual 512MB", 92 [34] = "Apalis TK1 2GB", 93 [35] = "Apalis iMX6 Dual 1GB IT", 94 }; 95 96 #ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_MMC 97 static int tdx_cfg_block_mmc_storage(u8 *config_block, int write) 98 { 99 struct mmc *mmc; 100 int dev = CONFIG_TDX_CFG_BLOCK_DEV; 101 int offset = CONFIG_TDX_CFG_BLOCK_OFFSET; 102 uint part = CONFIG_TDX_CFG_BLOCK_PART; 103 uint blk_start; 104 int ret = 0; 105 106 /* Read production parameter config block from eMMC */ 107 mmc = find_mmc_device(dev); 108 if (!mmc) { 109 puts("No MMC card found\n"); 110 ret = -ENODEV; 111 goto out; 112 } 113 if (part != mmc_get_blk_desc(mmc)->hwpart) { 114 if (blk_select_hwpart_devnum(IF_TYPE_MMC, dev, part)) { 115 puts("MMC partition switch failed\n"); 116 ret = -ENODEV; 117 goto out; 118 } 119 } 120 if (offset < 0) 121 offset += mmc->capacity; 122 blk_start = ALIGN(offset, mmc->write_bl_len) / mmc->write_bl_len; 123 124 if (!write) { 125 /* Careful reads a whole block of 512 bytes into config_block */ 126 if (blk_dread(mmc_get_blk_desc(mmc), blk_start, 1, 127 (unsigned char *)config_block) != 1) { 128 ret = -EIO; 129 goto out; 130 } 131 } else { 132 /* Just writing one 512 byte block */ 133 if (blk_dwrite(mmc_get_blk_desc(mmc), blk_start, 1, 134 (unsigned char *)config_block) != 1) { 135 ret = -EIO; 136 goto out; 137 } 138 } 139 140 out: 141 /* Switch back to regular eMMC user partition */ 142 blk_select_hwpart_devnum(IF_TYPE_MMC, 0, 0); 143 144 return ret; 145 } 146 #endif 147 148 #ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_NAND 149 static int read_tdx_cfg_block_from_nand(unsigned char *config_block) 150 { 151 size_t size = TDX_CFG_BLOCK_MAX_SIZE; 152 153 /* Read production parameter config block from NAND page */ 154 return nand_read_skip_bad(get_nand_dev_by_index(0), 155 CONFIG_TDX_CFG_BLOCK_OFFSET, 156 &size, NULL, TDX_CFG_BLOCK_MAX_SIZE, 157 config_block); 158 } 159 160 static int write_tdx_cfg_block_to_nand(unsigned char *config_block) 161 { 162 size_t size = TDX_CFG_BLOCK_MAX_SIZE; 163 164 /* Write production parameter config block to NAND page */ 165 return nand_write_skip_bad(get_nand_dev_by_index(0), 166 CONFIG_TDX_CFG_BLOCK_OFFSET, 167 &size, NULL, TDX_CFG_BLOCK_MAX_SIZE, 168 config_block, WITH_WR_VERIFY); 169 } 170 #endif 171 172 #ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_NOR 173 static int read_tdx_cfg_block_from_nor(unsigned char *config_block) 174 { 175 /* Read production parameter config block from NOR flash */ 176 memcpy(config_block, (void *)CONFIG_TDX_CFG_BLOCK_OFFSET, 177 TDX_CFG_BLOCK_MAX_SIZE); 178 return 0; 179 } 180 181 static int write_tdx_cfg_block_to_nor(unsigned char *config_block) 182 { 183 /* Write production parameter config block to NOR flash */ 184 return flash_write((void *)config_block, CONFIG_TDX_CFG_BLOCK_OFFSET, 185 TDX_CFG_BLOCK_MAX_SIZE); 186 } 187 #endif 188 189 int read_tdx_cfg_block(void) 190 { 191 int ret = 0; 192 u8 *config_block = NULL; 193 struct toradex_tag *tag; 194 size_t size = TDX_CFG_BLOCK_MAX_SIZE; 195 int offset; 196 197 /* Allocate RAM area for config block */ 198 config_block = memalign(ARCH_DMA_MINALIGN, size); 199 if (!config_block) { 200 printf("Not enough malloc space available!\n"); 201 return -ENOMEM; 202 } 203 204 memset(config_block, 0, size); 205 206 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC) 207 ret = tdx_cfg_block_mmc_storage(config_block, 0); 208 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND) 209 ret = read_tdx_cfg_block_from_nand(config_block); 210 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR) 211 ret = read_tdx_cfg_block_from_nor(config_block); 212 #else 213 ret = -EINVAL; 214 #endif 215 if (ret) 216 goto out; 217 218 /* Expect a valid tag first */ 219 tag = (struct toradex_tag *)config_block; 220 if (tag->flags != TAG_FLAG_VALID || tag->id != TAG_VALID) { 221 valid_cfgblock = false; 222 ret = -EINVAL; 223 goto out; 224 } 225 valid_cfgblock = true; 226 offset = 4; 227 228 while (offset < TDX_CFG_BLOCK_MAX_SIZE) { 229 tag = (struct toradex_tag *)(config_block + offset); 230 offset += 4; 231 if (tag->id == TAG_INVALID) 232 break; 233 234 if (tag->flags == TAG_FLAG_VALID) { 235 switch (tag->id) { 236 case TAG_MAC: 237 memcpy(&tdx_eth_addr, config_block + offset, 238 6); 239 240 /* NIC part of MAC address is serial number */ 241 tdx_serial = ntohl(tdx_eth_addr.nic) >> 8; 242 break; 243 case TAG_HW: 244 memcpy(&tdx_hw_tag, config_block + offset, 8); 245 break; 246 } 247 } 248 249 /* Get to next tag according to current tags length */ 250 offset += tag->len * 4; 251 } 252 253 /* Cap product id to avoid issues with a yet unknown one */ 254 if (tdx_hw_tag.prodid > (sizeof(toradex_modules) / 255 sizeof(toradex_modules[0]))) 256 tdx_hw_tag.prodid = 0; 257 258 out: 259 free(config_block); 260 return ret; 261 } 262 263 static int get_cfgblock_interactive(void) 264 { 265 char message[CONFIG_SYS_CBSIZE]; 266 char *soc; 267 char it = 'n'; 268 int len; 269 270 if (cpu_is_pxa27x()) 271 sprintf(message, "Is the module the 312 MHz version? [y/N] "); 272 else 273 sprintf(message, "Is the module an IT version? [y/N] "); 274 275 len = cli_readline(message); 276 it = console_buffer[0]; 277 278 soc = env_get("soc"); 279 if (!strcmp("mx6", soc)) { 280 #ifdef CONFIG_MACH_TYPE 281 if (it == 'y' || it == 'Y') 282 if (is_cpu_type(MXC_CPU_MX6Q)) 283 tdx_hw_tag.prodid = APALIS_IMX6Q_IT; 284 else 285 tdx_hw_tag.prodid = APALIS_IMX6D_IT; 286 else 287 if (is_cpu_type(MXC_CPU_MX6Q)) 288 tdx_hw_tag.prodid = APALIS_IMX6Q; 289 else 290 tdx_hw_tag.prodid = APALIS_IMX6D; 291 #else 292 if (it == 'y' || it == 'Y') 293 if (is_cpu_type(MXC_CPU_MX6DL)) 294 tdx_hw_tag.prodid = COLIBRI_IMX6DL_IT; 295 else 296 tdx_hw_tag.prodid = COLIBRI_IMX6S_IT; 297 else 298 if (is_cpu_type(MXC_CPU_MX6DL)) 299 tdx_hw_tag.prodid = COLIBRI_IMX6DL; 300 else 301 tdx_hw_tag.prodid = COLIBRI_IMX6S; 302 #endif /* CONFIG_MACH_TYPE */ 303 } else if (!strcmp("imx7d", soc)) { 304 tdx_hw_tag.prodid = COLIBRI_IMX7D; 305 } else if (!strcmp("imx7s", soc)) { 306 tdx_hw_tag.prodid = COLIBRI_IMX7S; 307 } else if (!strcmp("tegra20", soc)) { 308 if (it == 'y' || it == 'Y') 309 if (gd->ram_size == 0x10000000) 310 tdx_hw_tag.prodid = COLIBRI_T20_256MB_IT; 311 else 312 tdx_hw_tag.prodid = COLIBRI_T20_512MB_IT; 313 else 314 if (gd->ram_size == 0x10000000) 315 tdx_hw_tag.prodid = COLIBRI_T20_256MB; 316 else 317 tdx_hw_tag.prodid = COLIBRI_T20_512MB; 318 } else if (cpu_is_pxa27x()) { 319 if (it == 'y' || it == 'Y') 320 tdx_hw_tag.prodid = COLIBRI_PXA270_312MHZ; 321 else 322 tdx_hw_tag.prodid = COLIBRI_PXA270_520MHZ; 323 #ifdef CONFIG_MACH_TYPE 324 } else if (!strcmp("tegra30", soc)) { 325 if (CONFIG_MACH_TYPE == MACH_TYPE_APALIS_T30) { 326 if (it == 'y' || it == 'Y') 327 tdx_hw_tag.prodid = APALIS_T30_IT; 328 else 329 if (gd->ram_size == 0x40000000) 330 tdx_hw_tag.prodid = APALIS_T30_1GB; 331 else 332 tdx_hw_tag.prodid = APALIS_T30_2GB; 333 } else { 334 if (it == 'y' || it == 'Y') 335 tdx_hw_tag.prodid = COLIBRI_T30_IT; 336 else 337 tdx_hw_tag.prodid = COLIBRI_T30; 338 } 339 #endif /* CONFIG_MACH_TYPE */ 340 } else if (!strcmp("tegra124", soc)) { 341 tdx_hw_tag.prodid = APALIS_TK1_2GB; 342 } else if (!strcmp("vf500", soc)) { 343 if (it == 'y' || it == 'Y') 344 tdx_hw_tag.prodid = COLIBRI_VF50_IT; 345 else 346 tdx_hw_tag.prodid = COLIBRI_VF50; 347 } else if (!strcmp("vf610", soc)) { 348 if (it == 'y' || it == 'Y') 349 tdx_hw_tag.prodid = COLIBRI_VF61_IT; 350 else 351 tdx_hw_tag.prodid = COLIBRI_VF61; 352 } else { 353 printf("Module type not detectable due to unknown SoC\n"); 354 return -1; 355 } 356 357 while (len < 4) { 358 sprintf(message, "Enter the module version (e.g. V1.1B): V"); 359 len = cli_readline(message); 360 } 361 362 tdx_hw_tag.ver_major = console_buffer[0] - '0'; 363 tdx_hw_tag.ver_minor = console_buffer[2] - '0'; 364 tdx_hw_tag.ver_assembly = console_buffer[3] - 'A'; 365 366 if (cpu_is_pxa27x() && (tdx_hw_tag.ver_major == 1)) 367 tdx_hw_tag.prodid -= (COLIBRI_PXA270_312MHZ - 368 COLIBRI_PXA270_V1_312MHZ); 369 370 while (len < 8) { 371 sprintf(message, "Enter module serial number: "); 372 len = cli_readline(message); 373 } 374 375 tdx_serial = simple_strtoul(console_buffer, NULL, 10); 376 377 return 0; 378 } 379 380 static int get_cfgblock_barcode(char *barcode) 381 { 382 if (strlen(barcode) < 16) { 383 printf("Argument too short, barcode is 16 chars long\n"); 384 return -1; 385 } 386 387 /* Get hardware information from the first 8 digits */ 388 tdx_hw_tag.ver_major = barcode[4] - '0'; 389 tdx_hw_tag.ver_minor = barcode[5] - '0'; 390 tdx_hw_tag.ver_assembly = barcode[7] - '0'; 391 392 barcode[4] = '\0'; 393 tdx_hw_tag.prodid = simple_strtoul(barcode, NULL, 10); 394 395 /* Parse second part of the barcode (serial number */ 396 barcode += 8; 397 tdx_serial = simple_strtoul(barcode, NULL, 10); 398 399 return 0; 400 } 401 402 static int do_cfgblock_create(cmd_tbl_t *cmdtp, int flag, int argc, 403 char * const argv[]) 404 { 405 u8 *config_block; 406 struct toradex_tag *tag; 407 size_t size = TDX_CFG_BLOCK_MAX_SIZE; 408 int offset = 0; 409 int ret = CMD_RET_SUCCESS; 410 int err; 411 412 /* Allocate RAM area for config block */ 413 config_block = memalign(ARCH_DMA_MINALIGN, size); 414 if (!config_block) { 415 printf("Not enough malloc space available!\n"); 416 return CMD_RET_FAILURE; 417 } 418 419 memset(config_block, 0xff, size); 420 421 read_tdx_cfg_block(); 422 if (valid_cfgblock) { 423 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND) 424 /* 425 * On NAND devices, recreation is only allowed if the page is 426 * empty (config block invalid...) 427 */ 428 printf("NAND erase block %d need to be erased before creating a Toradex config block\n", 429 CONFIG_TDX_CFG_BLOCK_OFFSET / 430 get_nand_dev_by_index(0)->erasesize); 431 goto out; 432 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR) 433 /* 434 * On NOR devices, recreation is only allowed if the sector is 435 * empty and write protection is off (config block invalid...) 436 */ 437 printf("NOR sector at offset 0x%02x need to be erased and unprotected before creating a Toradex config block\n", 438 CONFIG_TDX_CFG_BLOCK_OFFSET); 439 goto out; 440 #else 441 char message[CONFIG_SYS_CBSIZE]; 442 sprintf(message, 443 "A valid Toradex config block is present, still recreate? [y/N] "); 444 445 if (!cli_readline(message)) 446 goto out; 447 448 if (console_buffer[0] != 'y' && console_buffer[0] != 'Y') 449 goto out; 450 #endif 451 } 452 453 /* Parse new Toradex config block data... */ 454 if (argc < 3) 455 err = get_cfgblock_interactive(); 456 else 457 err = get_cfgblock_barcode(argv[2]); 458 459 if (err) { 460 ret = CMD_RET_FAILURE; 461 goto out; 462 } 463 464 /* Convert serial number to MAC address (the storage format) */ 465 tdx_eth_addr.oui = htonl(0x00142dUL << 8); 466 tdx_eth_addr.nic = htonl(tdx_serial << 8); 467 468 /* Valid Tag */ 469 tag = (struct toradex_tag *)config_block; 470 tag->id = TAG_VALID; 471 tag->flags = TAG_FLAG_VALID; 472 tag->len = 0; 473 offset += 4; 474 475 /* Product Tag */ 476 tag = (struct toradex_tag *)(config_block + offset); 477 tag->id = TAG_HW; 478 tag->flags = TAG_FLAG_VALID; 479 tag->len = 2; 480 offset += 4; 481 482 memcpy(config_block + offset, &tdx_hw_tag, 8); 483 offset += 8; 484 485 /* MAC Tag */ 486 tag = (struct toradex_tag *)(config_block + offset); 487 tag->id = TAG_MAC; 488 tag->flags = TAG_FLAG_VALID; 489 tag->len = 2; 490 offset += 4; 491 492 memcpy(config_block + offset, &tdx_eth_addr, 6); 493 offset += 6; 494 memset(config_block + offset, 0, 32 - offset); 495 496 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC) 497 err = tdx_cfg_block_mmc_storage(config_block, 1); 498 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND) 499 err = write_tdx_cfg_block_to_nand(config_block); 500 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR) 501 err = write_tdx_cfg_block_to_nor(config_block); 502 #else 503 err = -EINVAL; 504 #endif 505 if (err) { 506 printf("Failed to write Toradex config block: %d\n", ret); 507 ret = CMD_RET_FAILURE; 508 goto out; 509 } 510 511 printf("Toradex config block successfully written\n"); 512 513 out: 514 free(config_block); 515 return ret; 516 } 517 518 static int do_cfgblock(cmd_tbl_t *cmdtp, int flag, int argc, 519 char * const argv[]) 520 { 521 int ret; 522 523 if (argc < 2) 524 return CMD_RET_USAGE; 525 526 if (!strcmp(argv[1], "create")) { 527 return do_cfgblock_create(cmdtp, flag, argc, argv); 528 } else if (!strcmp(argv[1], "reload")) { 529 ret = read_tdx_cfg_block(); 530 if (ret) { 531 printf("Failed to reload Toradex config block: %d\n", 532 ret); 533 return CMD_RET_FAILURE; 534 } 535 return CMD_RET_SUCCESS; 536 } 537 538 return CMD_RET_USAGE; 539 } 540 541 U_BOOT_CMD( 542 cfgblock, 3, 0, do_cfgblock, 543 "Toradex config block handling commands", 544 "create [barcode] - (Re-)create Toradex config block\n" 545 "cfgblock reload - Reload Toradex config block from flash" 546 ); 547