1 /* 2 * Copyright (c) 2016 Toradex, Inc. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include "tdx-cfg-block.h" 9 10 #if defined(CONFIG_TARGET_APALIS_IMX6) || defined(CONFIG_TARGET_COLIBRI_IMX6) 11 #include <asm/arch/sys_proto.h> 12 #else 13 #define is_cpu_type(cpu) (0) 14 #endif 15 #if defined(CONFIG_CPU_PXA27X) 16 #include <asm/arch-pxa/pxa.h> 17 #else 18 #define cpu_is_pxa27x(cpu) (0) 19 #endif 20 #include <cli.h> 21 #include <console.h> 22 #include <flash.h> 23 #include <malloc.h> 24 #include <mmc.h> 25 #include <nand.h> 26 #include <asm/mach-types.h> 27 28 DECLARE_GLOBAL_DATA_PTR; 29 30 #define TAG_VALID 0xcf01 31 #define TAG_MAC 0x0000 32 #define TAG_HW 0x0008 33 #define TAG_INVALID 0xffff 34 35 #define TAG_FLAG_VALID 0x1 36 37 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC) 38 #define TDX_CFG_BLOCK_MAX_SIZE 512 39 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND) 40 #define TDX_CFG_BLOCK_MAX_SIZE 64 41 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR) 42 #define TDX_CFG_BLOCK_MAX_SIZE 64 43 #else 44 #error Toradex config block location not set 45 #endif 46 47 struct toradex_tag { 48 u32 len:14; 49 u32 flags:2; 50 u32 id:16; 51 }; 52 53 bool valid_cfgblock; 54 struct toradex_hw tdx_hw_tag; 55 struct toradex_eth_addr tdx_eth_addr; 56 u32 tdx_serial; 57 58 const char * const toradex_modules[] = { 59 [0] = "UNKNOWN MODULE", 60 [1] = "Colibri PXA270 312MHz", 61 [2] = "Colibri PXA270 520MHz", 62 [3] = "Colibri PXA320 806MHz", 63 [4] = "Colibri PXA300 208MHz", 64 [5] = "Colibri PXA310 624MHz", 65 [6] = "Colibri PXA320 806MHz IT", 66 [7] = "Colibri PXA300 208MHz XT", 67 [8] = "Colibri PXA270 312MHz", 68 [9] = "Colibri PXA270 520MHz", 69 [10] = "Colibri VF50 128MB", /* not currently on sale */ 70 [11] = "Colibri VF61 256MB", 71 [12] = "Colibri VF61 256MB IT", 72 [13] = "Colibri VF50 128MB IT", 73 [14] = "Colibri iMX6 Solo 256MB", 74 [15] = "Colibri iMX6 DualLite 512MB", 75 [16] = "Colibri iMX6 Solo 256MB IT", 76 [17] = "Colibri iMX6 DualLite 512MB IT", 77 [18] = "UNKNOWN MODULE", 78 [19] = "UNKNOWN MODULE", 79 [20] = "Colibri T20 256MB", 80 [21] = "Colibri T20 512MB", 81 [22] = "Colibri T20 512MB IT", 82 [23] = "Colibri T30 1GB", 83 [24] = "Colibri T20 256MB IT", 84 [25] = "Apalis T30 2GB", 85 [26] = "Apalis T30 1GB", 86 [27] = "Apalis iMX6 Quad 1GB", 87 [28] = "Apalis iMX6 Quad 2GB IT", 88 [29] = "Apalis iMX6 Dual 512MB", 89 [30] = "Colibri T30 1GB IT", 90 [31] = "Apalis T30 1GB IT", 91 [32] = "Colibri iMX7 Solo 256MB", 92 [33] = "Colibri iMX7 Dual 512MB", 93 [34] = "Apalis TK1 2GB", 94 [35] = "Apalis iMX6 Dual 1GB IT", 95 }; 96 97 #ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_MMC 98 static int tdx_cfg_block_mmc_storage(u8 *config_block, int write) 99 { 100 struct mmc *mmc; 101 int dev = CONFIG_TDX_CFG_BLOCK_DEV; 102 int offset = CONFIG_TDX_CFG_BLOCK_OFFSET; 103 uint part = CONFIG_TDX_CFG_BLOCK_PART; 104 uint blk_start; 105 int ret = 0; 106 107 /* Read production parameter config block from eMMC */ 108 mmc = find_mmc_device(dev); 109 if (!mmc) { 110 puts("No MMC card found\n"); 111 ret = -ENODEV; 112 goto out; 113 } 114 if (part != mmc_get_blk_desc(mmc)->hwpart) { 115 if (blk_select_hwpart_devnum(IF_TYPE_MMC, dev, part)) { 116 puts("MMC partition switch failed\n"); 117 ret = -ENODEV; 118 goto out; 119 } 120 } 121 if (offset < 0) 122 offset += mmc->capacity; 123 blk_start = ALIGN(offset, mmc->write_bl_len) / mmc->write_bl_len; 124 125 if (!write) { 126 /* Careful reads a whole block of 512 bytes into config_block */ 127 if (blk_dread(mmc_get_blk_desc(mmc), blk_start, 1, 128 (unsigned char *)config_block) != 1) { 129 ret = -EIO; 130 goto out; 131 } 132 } else { 133 /* Just writing one 512 byte block */ 134 if (blk_dwrite(mmc_get_blk_desc(mmc), blk_start, 1, 135 (unsigned char *)config_block) != 1) { 136 ret = -EIO; 137 goto out; 138 } 139 } 140 141 out: 142 /* Switch back to regular eMMC user partition */ 143 blk_select_hwpart_devnum(IF_TYPE_MMC, 0, 0); 144 145 return ret; 146 } 147 #endif 148 149 #ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_NAND 150 static int read_tdx_cfg_block_from_nand(unsigned char *config_block) 151 { 152 size_t size = TDX_CFG_BLOCK_MAX_SIZE; 153 154 /* Read production parameter config block from NAND page */ 155 return nand_read_skip_bad(get_nand_dev_by_index(0), 156 CONFIG_TDX_CFG_BLOCK_OFFSET, 157 &size, NULL, TDX_CFG_BLOCK_MAX_SIZE, 158 config_block); 159 } 160 161 static int write_tdx_cfg_block_to_nand(unsigned char *config_block) 162 { 163 size_t size = TDX_CFG_BLOCK_MAX_SIZE; 164 165 /* Write production parameter config block to NAND page */ 166 return nand_write_skip_bad(get_nand_dev_by_index(0), 167 CONFIG_TDX_CFG_BLOCK_OFFSET, 168 &size, NULL, TDX_CFG_BLOCK_MAX_SIZE, 169 config_block, WITH_WR_VERIFY); 170 } 171 #endif 172 173 #ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_NOR 174 static int read_tdx_cfg_block_from_nor(unsigned char *config_block) 175 { 176 /* Read production parameter config block from NOR flash */ 177 memcpy(config_block, (void *)CONFIG_TDX_CFG_BLOCK_OFFSET, 178 TDX_CFG_BLOCK_MAX_SIZE); 179 return 0; 180 } 181 182 static int write_tdx_cfg_block_to_nor(unsigned char *config_block) 183 { 184 /* Write production parameter config block to NOR flash */ 185 return flash_write((void *)config_block, CONFIG_TDX_CFG_BLOCK_OFFSET, 186 TDX_CFG_BLOCK_MAX_SIZE); 187 } 188 #endif 189 190 int read_tdx_cfg_block(void) 191 { 192 int ret = 0; 193 u8 *config_block = NULL; 194 struct toradex_tag *tag; 195 size_t size = TDX_CFG_BLOCK_MAX_SIZE; 196 int offset; 197 198 /* Allocate RAM area for config block */ 199 config_block = memalign(ARCH_DMA_MINALIGN, size); 200 if (!config_block) { 201 printf("Not enough malloc space available!\n"); 202 return -ENOMEM; 203 } 204 205 memset(config_block, 0, size); 206 207 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC) 208 ret = tdx_cfg_block_mmc_storage(config_block, 0); 209 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND) 210 ret = read_tdx_cfg_block_from_nand(config_block); 211 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR) 212 ret = read_tdx_cfg_block_from_nor(config_block); 213 #else 214 ret = -EINVAL; 215 #endif 216 if (ret) 217 goto out; 218 219 /* Expect a valid tag first */ 220 tag = (struct toradex_tag *)config_block; 221 if (tag->flags != TAG_FLAG_VALID || tag->id != TAG_VALID) { 222 valid_cfgblock = false; 223 ret = -EINVAL; 224 goto out; 225 } 226 valid_cfgblock = true; 227 offset = 4; 228 229 while (offset < TDX_CFG_BLOCK_MAX_SIZE) { 230 tag = (struct toradex_tag *)(config_block + offset); 231 offset += 4; 232 if (tag->id == TAG_INVALID) 233 break; 234 235 if (tag->flags == TAG_FLAG_VALID) { 236 switch (tag->id) { 237 case TAG_MAC: 238 memcpy(&tdx_eth_addr, config_block + offset, 239 6); 240 241 /* NIC part of MAC address is serial number */ 242 tdx_serial = ntohl(tdx_eth_addr.nic) >> 8; 243 break; 244 case TAG_HW: 245 memcpy(&tdx_hw_tag, config_block + offset, 8); 246 break; 247 } 248 } 249 250 /* Get to next tag according to current tags length */ 251 offset += tag->len * 4; 252 } 253 254 /* Cap product id to avoid issues with a yet unknown one */ 255 if (tdx_hw_tag.prodid > (sizeof(toradex_modules) / 256 sizeof(toradex_modules[0]))) 257 tdx_hw_tag.prodid = 0; 258 259 out: 260 free(config_block); 261 return ret; 262 } 263 264 static int get_cfgblock_interactive(void) 265 { 266 char message[CONFIG_SYS_CBSIZE]; 267 char *soc; 268 char it = 'n'; 269 int len; 270 271 if (cpu_is_pxa27x()) 272 sprintf(message, "Is the module the 312 MHz version? [y/N] "); 273 else 274 sprintf(message, "Is the module an IT version? [y/N] "); 275 276 len = cli_readline(message); 277 it = console_buffer[0]; 278 279 soc = env_get("soc"); 280 if (!strcmp("mx6", soc)) { 281 #ifdef CONFIG_MACH_TYPE 282 if (it == 'y' || it == 'Y') 283 if (is_cpu_type(MXC_CPU_MX6Q)) 284 tdx_hw_tag.prodid = APALIS_IMX6Q_IT; 285 else 286 tdx_hw_tag.prodid = APALIS_IMX6D_IT; 287 else 288 if (is_cpu_type(MXC_CPU_MX6Q)) 289 tdx_hw_tag.prodid = APALIS_IMX6Q; 290 else 291 tdx_hw_tag.prodid = APALIS_IMX6D; 292 #else 293 if (it == 'y' || it == 'Y') 294 if (is_cpu_type(MXC_CPU_MX6DL)) 295 tdx_hw_tag.prodid = COLIBRI_IMX6DL_IT; 296 else 297 tdx_hw_tag.prodid = COLIBRI_IMX6S_IT; 298 else 299 if (is_cpu_type(MXC_CPU_MX6DL)) 300 tdx_hw_tag.prodid = COLIBRI_IMX6DL; 301 else 302 tdx_hw_tag.prodid = COLIBRI_IMX6S; 303 #endif /* CONFIG_MACH_TYPE */ 304 } else if (!strcmp("imx7d", soc)) { 305 tdx_hw_tag.prodid = COLIBRI_IMX7D; 306 } else if (!strcmp("imx7s", soc)) { 307 tdx_hw_tag.prodid = COLIBRI_IMX7S; 308 } else if (!strcmp("tegra20", soc)) { 309 if (it == 'y' || it == 'Y') 310 if (gd->ram_size == 0x10000000) 311 tdx_hw_tag.prodid = COLIBRI_T20_256MB_IT; 312 else 313 tdx_hw_tag.prodid = COLIBRI_T20_512MB_IT; 314 else 315 if (gd->ram_size == 0x10000000) 316 tdx_hw_tag.prodid = COLIBRI_T20_256MB; 317 else 318 tdx_hw_tag.prodid = COLIBRI_T20_512MB; 319 } else if (cpu_is_pxa27x()) { 320 if (it == 'y' || it == 'Y') 321 tdx_hw_tag.prodid = COLIBRI_PXA270_312MHZ; 322 else 323 tdx_hw_tag.prodid = COLIBRI_PXA270_520MHZ; 324 #ifdef CONFIG_MACH_TYPE 325 } else if (!strcmp("tegra30", soc)) { 326 if (CONFIG_MACH_TYPE == MACH_TYPE_APALIS_T30) { 327 if (it == 'y' || it == 'Y') 328 tdx_hw_tag.prodid = APALIS_T30_IT; 329 else 330 if (gd->ram_size == 0x40000000) 331 tdx_hw_tag.prodid = APALIS_T30_1GB; 332 else 333 tdx_hw_tag.prodid = APALIS_T30_2GB; 334 } else { 335 if (it == 'y' || it == 'Y') 336 tdx_hw_tag.prodid = COLIBRI_T30_IT; 337 else 338 tdx_hw_tag.prodid = COLIBRI_T30; 339 } 340 #endif /* CONFIG_MACH_TYPE */ 341 } else if (!strcmp("tegra124", soc)) { 342 tdx_hw_tag.prodid = APALIS_TK1_2GB; 343 } else if (!strcmp("vf500", soc)) { 344 if (it == 'y' || it == 'Y') 345 tdx_hw_tag.prodid = COLIBRI_VF50_IT; 346 else 347 tdx_hw_tag.prodid = COLIBRI_VF50; 348 } else if (!strcmp("vf610", soc)) { 349 if (it == 'y' || it == 'Y') 350 tdx_hw_tag.prodid = COLIBRI_VF61_IT; 351 else 352 tdx_hw_tag.prodid = COLIBRI_VF61; 353 } else { 354 printf("Module type not detectable due to unknown SoC\n"); 355 return -1; 356 } 357 358 while (len < 4) { 359 sprintf(message, "Enter the module version (e.g. V1.1B): V"); 360 len = cli_readline(message); 361 } 362 363 tdx_hw_tag.ver_major = console_buffer[0] - '0'; 364 tdx_hw_tag.ver_minor = console_buffer[2] - '0'; 365 tdx_hw_tag.ver_assembly = console_buffer[3] - 'A'; 366 367 if (cpu_is_pxa27x() && (tdx_hw_tag.ver_major == 1)) 368 tdx_hw_tag.prodid -= (COLIBRI_PXA270_312MHZ - 369 COLIBRI_PXA270_V1_312MHZ); 370 371 while (len < 8) { 372 sprintf(message, "Enter module serial number: "); 373 len = cli_readline(message); 374 } 375 376 tdx_serial = simple_strtoul(console_buffer, NULL, 10); 377 378 return 0; 379 } 380 381 static int get_cfgblock_barcode(char *barcode) 382 { 383 if (strlen(barcode) < 16) { 384 printf("Argument too short, barcode is 16 chars long\n"); 385 return -1; 386 } 387 388 /* Get hardware information from the first 8 digits */ 389 tdx_hw_tag.ver_major = barcode[4] - '0'; 390 tdx_hw_tag.ver_minor = barcode[5] - '0'; 391 tdx_hw_tag.ver_assembly = barcode[7] - '0'; 392 393 barcode[4] = '\0'; 394 tdx_hw_tag.prodid = simple_strtoul(barcode, NULL, 10); 395 396 /* Parse second part of the barcode (serial number */ 397 barcode += 8; 398 tdx_serial = simple_strtoul(barcode, NULL, 10); 399 400 return 0; 401 } 402 403 static int do_cfgblock_create(cmd_tbl_t *cmdtp, int flag, int argc, 404 char * const argv[]) 405 { 406 u8 *config_block; 407 struct toradex_tag *tag; 408 size_t size = TDX_CFG_BLOCK_MAX_SIZE; 409 int offset = 0; 410 int ret = CMD_RET_SUCCESS; 411 int err; 412 413 /* Allocate RAM area for config block */ 414 config_block = memalign(ARCH_DMA_MINALIGN, size); 415 if (!config_block) { 416 printf("Not enough malloc space available!\n"); 417 return CMD_RET_FAILURE; 418 } 419 420 memset(config_block, 0xff, size); 421 422 read_tdx_cfg_block(); 423 if (valid_cfgblock) { 424 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND) 425 /* 426 * On NAND devices, recreation is only allowed if the page is 427 * empty (config block invalid...) 428 */ 429 printf("NAND erase block %d need to be erased before creating a Toradex config block\n", 430 CONFIG_TDX_CFG_BLOCK_OFFSET / 431 get_nand_dev_by_index(0)->erasesize); 432 goto out; 433 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR) 434 /* 435 * On NOR devices, recreation is only allowed if the sector is 436 * empty and write protection is off (config block invalid...) 437 */ 438 printf("NOR sector at offset 0x%02x need to be erased and unprotected before creating a Toradex config block\n", 439 CONFIG_TDX_CFG_BLOCK_OFFSET); 440 goto out; 441 #else 442 char message[CONFIG_SYS_CBSIZE]; 443 sprintf(message, 444 "A valid Toradex config block is present, still recreate? [y/N] "); 445 446 if (!cli_readline(message)) 447 goto out; 448 449 if (console_buffer[0] != 'y' && console_buffer[0] != 'Y') 450 goto out; 451 #endif 452 } 453 454 /* Parse new Toradex config block data... */ 455 if (argc < 3) 456 err = get_cfgblock_interactive(); 457 else 458 err = get_cfgblock_barcode(argv[2]); 459 460 if (err) { 461 ret = CMD_RET_FAILURE; 462 goto out; 463 } 464 465 /* Convert serial number to MAC address (the storage format) */ 466 tdx_eth_addr.oui = htonl(0x00142dUL << 8); 467 tdx_eth_addr.nic = htonl(tdx_serial << 8); 468 469 /* Valid Tag */ 470 tag = (struct toradex_tag *)config_block; 471 tag->id = TAG_VALID; 472 tag->flags = TAG_FLAG_VALID; 473 tag->len = 0; 474 offset += 4; 475 476 /* Product Tag */ 477 tag = (struct toradex_tag *)(config_block + offset); 478 tag->id = TAG_HW; 479 tag->flags = TAG_FLAG_VALID; 480 tag->len = 2; 481 offset += 4; 482 483 memcpy(config_block + offset, &tdx_hw_tag, 8); 484 offset += 8; 485 486 /* MAC Tag */ 487 tag = (struct toradex_tag *)(config_block + offset); 488 tag->id = TAG_MAC; 489 tag->flags = TAG_FLAG_VALID; 490 tag->len = 2; 491 offset += 4; 492 493 memcpy(config_block + offset, &tdx_eth_addr, 6); 494 offset += 6; 495 memset(config_block + offset, 0, 32 - offset); 496 497 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC) 498 err = tdx_cfg_block_mmc_storage(config_block, 1); 499 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND) 500 err = write_tdx_cfg_block_to_nand(config_block); 501 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR) 502 err = write_tdx_cfg_block_to_nor(config_block); 503 #else 504 err = -EINVAL; 505 #endif 506 if (err) { 507 printf("Failed to write Toradex config block: %d\n", ret); 508 ret = CMD_RET_FAILURE; 509 goto out; 510 } 511 512 printf("Toradex config block successfully written\n"); 513 514 out: 515 free(config_block); 516 return ret; 517 } 518 519 static int do_cfgblock(cmd_tbl_t *cmdtp, int flag, int argc, 520 char * const argv[]) 521 { 522 int ret; 523 524 if (argc < 2) 525 return CMD_RET_USAGE; 526 527 if (!strcmp(argv[1], "create")) { 528 return do_cfgblock_create(cmdtp, flag, argc, argv); 529 } else if (!strcmp(argv[1], "reload")) { 530 ret = read_tdx_cfg_block(); 531 if (ret) { 532 printf("Failed to reload Toradex config block: %d\n", 533 ret); 534 return CMD_RET_FAILURE; 535 } 536 return CMD_RET_SUCCESS; 537 } 538 539 return CMD_RET_USAGE; 540 } 541 542 U_BOOT_CMD( 543 cfgblock, 3, 0, do_cfgblock, 544 "Toradex config block handling commands", 545 "create [barcode] - (Re-)create Toradex config block\n" 546 "cfgblock reload - Reload Toradex config block from flash" 547 ); 548