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 /* Flush cache after read */ 133 flush_cache((ulong)(unsigned char *)config_block, 512); 134 } else { 135 /* Just writing one 512 byte block */ 136 if (blk_dwrite(mmc_get_blk_desc(mmc), blk_start, 1, 137 (unsigned char *)config_block) != 1) { 138 ret = -EIO; 139 goto out; 140 } 141 } 142 143 out: 144 /* Switch back to regular eMMC user partition */ 145 blk_select_hwpart_devnum(IF_TYPE_MMC, 0, 0); 146 147 return ret; 148 } 149 #endif 150 151 #ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_NAND 152 static int read_tdx_cfg_block_from_nand(unsigned char *config_block) 153 { 154 size_t size = TDX_CFG_BLOCK_MAX_SIZE; 155 156 /* Read production parameter config block from NAND page */ 157 return nand_read_skip_bad(get_nand_dev_by_index(0), 158 CONFIG_TDX_CFG_BLOCK_OFFSET, 159 &size, NULL, TDX_CFG_BLOCK_MAX_SIZE, 160 config_block); 161 } 162 163 static int write_tdx_cfg_block_to_nand(unsigned char *config_block) 164 { 165 size_t size = TDX_CFG_BLOCK_MAX_SIZE; 166 167 /* Write production parameter config block to NAND page */ 168 return nand_write_skip_bad(get_nand_dev_by_index(0), 169 CONFIG_TDX_CFG_BLOCK_OFFSET, 170 &size, NULL, TDX_CFG_BLOCK_MAX_SIZE, 171 config_block, WITH_WR_VERIFY); 172 } 173 #endif 174 175 #ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_NOR 176 static int read_tdx_cfg_block_from_nor(unsigned char *config_block) 177 { 178 /* Read production parameter config block from NOR flash */ 179 memcpy(config_block, (void *)CONFIG_TDX_CFG_BLOCK_OFFSET, 180 TDX_CFG_BLOCK_MAX_SIZE); 181 return 0; 182 } 183 184 static int write_tdx_cfg_block_to_nor(unsigned char *config_block) 185 { 186 /* Write production parameter config block to NOR flash */ 187 return flash_write((void *)config_block, CONFIG_TDX_CFG_BLOCK_OFFSET, 188 TDX_CFG_BLOCK_MAX_SIZE); 189 } 190 #endif 191 192 int read_tdx_cfg_block(void) 193 { 194 int ret = 0; 195 u8 *config_block = NULL; 196 struct toradex_tag *tag; 197 size_t size = TDX_CFG_BLOCK_MAX_SIZE; 198 int offset; 199 200 /* Allocate RAM area for config block */ 201 config_block = memalign(ARCH_DMA_MINALIGN, size); 202 if (!config_block) { 203 printf("Not enough malloc space available!\n"); 204 return -ENOMEM; 205 } 206 207 memset(config_block, 0, size); 208 209 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC) 210 ret = tdx_cfg_block_mmc_storage(config_block, 0); 211 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND) 212 ret = read_tdx_cfg_block_from_nand(config_block); 213 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR) 214 ret = read_tdx_cfg_block_from_nor(config_block); 215 #else 216 ret = -EINVAL; 217 #endif 218 if (ret) 219 goto out; 220 221 /* Expect a valid tag first */ 222 tag = (struct toradex_tag *)config_block; 223 if (tag->flags != TAG_FLAG_VALID || tag->id != TAG_VALID) { 224 valid_cfgblock = false; 225 ret = -EINVAL; 226 goto out; 227 } 228 valid_cfgblock = true; 229 offset = 4; 230 231 while (offset < TDX_CFG_BLOCK_MAX_SIZE) { 232 tag = (struct toradex_tag *)(config_block + offset); 233 offset += 4; 234 if (tag->id == TAG_INVALID) 235 break; 236 237 if (tag->flags == TAG_FLAG_VALID) { 238 switch (tag->id) { 239 case TAG_MAC: 240 memcpy(&tdx_eth_addr, config_block + offset, 241 6); 242 243 /* NIC part of MAC address is serial number */ 244 tdx_serial = ntohl(tdx_eth_addr.nic) >> 8; 245 break; 246 case TAG_HW: 247 memcpy(&tdx_hw_tag, config_block + offset, 8); 248 break; 249 } 250 } 251 252 /* Get to next tag according to current tags length */ 253 offset += tag->len * 4; 254 } 255 256 /* Cap product id to avoid issues with a yet unknown one */ 257 if (tdx_hw_tag.prodid > (sizeof(toradex_modules) / 258 sizeof(toradex_modules[0]))) 259 tdx_hw_tag.prodid = 0; 260 261 out: 262 free(config_block); 263 return ret; 264 } 265 266 static int get_cfgblock_interactive(void) 267 { 268 char message[CONFIG_SYS_CBSIZE]; 269 char *soc; 270 char it = 'n'; 271 int len; 272 273 if (cpu_is_pxa27x()) 274 sprintf(message, "Is the module the 312 MHz version? [y/N] "); 275 else 276 sprintf(message, "Is the module an IT version? [y/N] "); 277 278 len = cli_readline(message); 279 it = console_buffer[0]; 280 281 soc = getenv("soc"); 282 if (!strcmp("mx6", soc)) { 283 #ifdef CONFIG_MACH_TYPE 284 if (it == 'y' || it == 'Y') 285 if (is_cpu_type(MXC_CPU_MX6Q)) 286 tdx_hw_tag.prodid = APALIS_IMX6Q_IT; 287 else 288 tdx_hw_tag.prodid = APALIS_IMX6D_IT; 289 else 290 if (is_cpu_type(MXC_CPU_MX6Q)) 291 tdx_hw_tag.prodid = APALIS_IMX6Q; 292 else 293 tdx_hw_tag.prodid = APALIS_IMX6D; 294 #else 295 if (it == 'y' || it == 'Y') 296 if (is_cpu_type(MXC_CPU_MX6DL)) 297 tdx_hw_tag.prodid = COLIBRI_IMX6DL_IT; 298 else 299 tdx_hw_tag.prodid = COLIBRI_IMX6S_IT; 300 else 301 if (is_cpu_type(MXC_CPU_MX6DL)) 302 tdx_hw_tag.prodid = COLIBRI_IMX6DL; 303 else 304 tdx_hw_tag.prodid = COLIBRI_IMX6S; 305 #endif /* CONFIG_MACH_TYPE */ 306 } else if (!strcmp("imx7d", soc)) { 307 tdx_hw_tag.prodid = COLIBRI_IMX7D; 308 } else if (!strcmp("imx7s", soc)) { 309 tdx_hw_tag.prodid = COLIBRI_IMX7S; 310 } else if (!strcmp("tegra20", soc)) { 311 if (it == 'y' || it == 'Y') 312 if (gd->ram_size == 0x10000000) 313 tdx_hw_tag.prodid = COLIBRI_T20_256MB_IT; 314 else 315 tdx_hw_tag.prodid = COLIBRI_T20_512MB_IT; 316 else 317 if (gd->ram_size == 0x10000000) 318 tdx_hw_tag.prodid = COLIBRI_T20_256MB; 319 else 320 tdx_hw_tag.prodid = COLIBRI_T20_512MB; 321 } else if (cpu_is_pxa27x()) { 322 if (it == 'y' || it == 'Y') 323 tdx_hw_tag.prodid = COLIBRI_PXA270_312MHZ; 324 else 325 tdx_hw_tag.prodid = COLIBRI_PXA270_520MHZ; 326 #ifdef CONFIG_MACH_TYPE 327 } else if (!strcmp("tegra30", soc)) { 328 if (CONFIG_MACH_TYPE == MACH_TYPE_APALIS_T30) { 329 if (it == 'y' || it == 'Y') 330 tdx_hw_tag.prodid = APALIS_T30_IT; 331 else 332 if (gd->ram_size == 0x40000000) 333 tdx_hw_tag.prodid = APALIS_T30_1GB; 334 else 335 tdx_hw_tag.prodid = APALIS_T30_2GB; 336 } else { 337 if (it == 'y' || it == 'Y') 338 tdx_hw_tag.prodid = COLIBRI_T30_IT; 339 else 340 tdx_hw_tag.prodid = COLIBRI_T30; 341 } 342 #endif /* CONFIG_MACH_TYPE */ 343 } else if (!strcmp("tegra124", soc)) { 344 tdx_hw_tag.prodid = APALIS_TK1_2GB; 345 } else if (!strcmp("vf500", soc)) { 346 if (it == 'y' || it == 'Y') 347 tdx_hw_tag.prodid = COLIBRI_VF50_IT; 348 else 349 tdx_hw_tag.prodid = COLIBRI_VF50; 350 } else if (!strcmp("vf610", soc)) { 351 if (it == 'y' || it == 'Y') 352 tdx_hw_tag.prodid = COLIBRI_VF61_IT; 353 else 354 tdx_hw_tag.prodid = COLIBRI_VF61; 355 } else { 356 printf("Module type not detectable due to unknown SoC\n"); 357 return -1; 358 } 359 360 while (len < 4) { 361 sprintf(message, "Enter the module version (e.g. V1.1B): V"); 362 len = cli_readline(message); 363 } 364 365 tdx_hw_tag.ver_major = console_buffer[0] - '0'; 366 tdx_hw_tag.ver_minor = console_buffer[2] - '0'; 367 tdx_hw_tag.ver_assembly = console_buffer[3] - 'A'; 368 369 if (cpu_is_pxa27x() && (tdx_hw_tag.ver_major == 1)) 370 tdx_hw_tag.prodid -= (COLIBRI_PXA270_312MHZ - 371 COLIBRI_PXA270_V1_312MHZ); 372 373 while (len < 8) { 374 sprintf(message, "Enter module serial number: "); 375 len = cli_readline(message); 376 } 377 378 tdx_serial = simple_strtoul(console_buffer, NULL, 10); 379 380 return 0; 381 } 382 383 static int get_cfgblock_barcode(char *barcode) 384 { 385 if (strlen(barcode) < 16) { 386 printf("Argument too short, barcode is 16 chars long\n"); 387 return -1; 388 } 389 390 /* Get hardware information from the first 8 digits */ 391 tdx_hw_tag.ver_major = barcode[4] - '0'; 392 tdx_hw_tag.ver_minor = barcode[5] - '0'; 393 tdx_hw_tag.ver_assembly = barcode[7] - '0'; 394 395 barcode[4] = '\0'; 396 tdx_hw_tag.prodid = simple_strtoul(barcode, NULL, 10); 397 398 /* Parse second part of the barcode (serial number */ 399 barcode += 8; 400 tdx_serial = simple_strtoul(barcode, NULL, 10); 401 402 return 0; 403 } 404 405 static int do_cfgblock_create(cmd_tbl_t *cmdtp, int flag, int argc, 406 char * const argv[]) 407 { 408 u8 *config_block; 409 struct toradex_tag *tag; 410 size_t size = TDX_CFG_BLOCK_MAX_SIZE; 411 int offset = 0; 412 int ret = CMD_RET_SUCCESS; 413 int err; 414 415 /* Allocate RAM area for config block */ 416 config_block = memalign(ARCH_DMA_MINALIGN, size); 417 if (!config_block) { 418 printf("Not enough malloc space available!\n"); 419 return CMD_RET_FAILURE; 420 } 421 422 memset(config_block, 0xff, size); 423 424 read_tdx_cfg_block(); 425 if (valid_cfgblock) { 426 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND) 427 /* 428 * On NAND devices, recreation is only allowed if the page is 429 * empty (config block invalid...) 430 */ 431 printf("NAND erase block %d need to be erased before creating a Toradex config block\n", 432 CONFIG_TDX_CFG_BLOCK_OFFSET / 433 get_nand_dev_by_index(0)->erasesize); 434 goto out; 435 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR) 436 /* 437 * On NOR devices, recreation is only allowed if the sector is 438 * empty and write protection is off (config block invalid...) 439 */ 440 printf("NOR sector at offset 0x%02x need to be erased and unprotected before creating a Toradex config block\n", 441 CONFIG_TDX_CFG_BLOCK_OFFSET); 442 goto out; 443 #else 444 char message[CONFIG_SYS_CBSIZE]; 445 sprintf(message, 446 "A valid Toradex config block is present, still recreate? [y/N] "); 447 448 if (!cli_readline(message)) 449 goto out; 450 451 if (console_buffer[0] != 'y' && console_buffer[0] != 'Y') 452 goto out; 453 #endif 454 } 455 456 /* Parse new Toradex config block data... */ 457 if (argc < 3) 458 err = get_cfgblock_interactive(); 459 else 460 err = get_cfgblock_barcode(argv[2]); 461 462 if (err) { 463 ret = CMD_RET_FAILURE; 464 goto out; 465 } 466 467 /* Convert serial number to MAC address (the storage format) */ 468 tdx_eth_addr.oui = htonl(0x00142dUL << 8); 469 tdx_eth_addr.nic = htonl(tdx_serial << 8); 470 471 /* Valid Tag */ 472 tag = (struct toradex_tag *)config_block; 473 tag->id = TAG_VALID; 474 tag->flags = TAG_FLAG_VALID; 475 tag->len = 0; 476 offset += 4; 477 478 /* Product Tag */ 479 tag = (struct toradex_tag *)(config_block + offset); 480 tag->id = TAG_HW; 481 tag->flags = TAG_FLAG_VALID; 482 tag->len = 2; 483 offset += 4; 484 485 memcpy(config_block + offset, &tdx_hw_tag, 8); 486 offset += 8; 487 488 /* MAC Tag */ 489 tag = (struct toradex_tag *)(config_block + offset); 490 tag->id = TAG_MAC; 491 tag->flags = TAG_FLAG_VALID; 492 tag->len = 2; 493 offset += 4; 494 495 memcpy(config_block + offset, &tdx_eth_addr, 6); 496 offset += 6; 497 memset(config_block + offset, 0, 32 - offset); 498 499 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC) 500 err = tdx_cfg_block_mmc_storage(config_block, 1); 501 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND) 502 err = write_tdx_cfg_block_to_nand(config_block); 503 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR) 504 err = write_tdx_cfg_block_to_nor(config_block); 505 #else 506 err = -EINVAL; 507 #endif 508 if (err) { 509 printf("Failed to write Toradex config block: %d\n", ret); 510 ret = CMD_RET_FAILURE; 511 goto out; 512 } 513 514 printf("Toradex config block successfully written\n"); 515 516 out: 517 free(config_block); 518 return ret; 519 } 520 521 static int do_cfgblock(cmd_tbl_t *cmdtp, int flag, int argc, 522 char * const argv[]) 523 { 524 int ret; 525 526 if (argc < 2) 527 return CMD_RET_USAGE; 528 529 if (!strcmp(argv[1], "create")) { 530 return do_cfgblock_create(cmdtp, flag, argc, argv); 531 } else if (!strcmp(argv[1], "reload")) { 532 ret = read_tdx_cfg_block(); 533 if (ret) { 534 printf("Failed to reload Toradex config block: %d\n", 535 ret); 536 return CMD_RET_FAILURE; 537 } 538 return CMD_RET_SUCCESS; 539 } 540 541 return CMD_RET_USAGE; 542 } 543 544 U_BOOT_CMD( 545 cfgblock, 3, 0, do_cfgblock, 546 "Toradex config block handling commands", 547 "create [barcode] - (Re-)create Toradex config block\n" 548 "cfgblock reload - Reload Toradex config block from flash" 549 ); 550