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(nand_info[0], CONFIG_TDX_CFG_BLOCK_OFFSET, 158 &size, NULL, TDX_CFG_BLOCK_MAX_SIZE, 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(nand_info[0], 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 = getenv("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 / nand_info[0]->erasesize); 430 goto out; 431 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR) 432 /* 433 * On NOR devices, recreation is only allowed if the sector is 434 * empty and write protection is off (config block invalid...) 435 */ 436 printf("NOR sector at offset 0x%02x need to be erased and unprotected before creating a Toradex config block\n", 437 CONFIG_TDX_CFG_BLOCK_OFFSET); 438 goto out; 439 #else 440 char message[CONFIG_SYS_CBSIZE]; 441 sprintf(message, 442 "A valid Toradex config block is present, still recreate? [y/N] "); 443 444 if (!cli_readline(message)) 445 goto out; 446 447 if (console_buffer[0] != 'y' && console_buffer[0] != 'Y') 448 goto out; 449 #endif 450 } 451 452 /* Parse new Toradex config block data... */ 453 if (argc < 3) 454 err = get_cfgblock_interactive(); 455 else 456 err = get_cfgblock_barcode(argv[2]); 457 458 if (err) { 459 ret = CMD_RET_FAILURE; 460 goto out; 461 } 462 463 /* Convert serial number to MAC address (the storage format) */ 464 tdx_eth_addr.oui = htonl(0x00142dUL << 8); 465 tdx_eth_addr.nic = htonl(tdx_serial << 8); 466 467 /* Valid Tag */ 468 tag = (struct toradex_tag *)config_block; 469 tag->id = TAG_VALID; 470 tag->flags = TAG_FLAG_VALID; 471 tag->len = 0; 472 offset += 4; 473 474 /* Product Tag */ 475 tag = (struct toradex_tag *)(config_block + offset); 476 tag->id = TAG_HW; 477 tag->flags = TAG_FLAG_VALID; 478 tag->len = 2; 479 offset += 4; 480 481 memcpy(config_block + offset, &tdx_hw_tag, 8); 482 offset += 8; 483 484 /* MAC Tag */ 485 tag = (struct toradex_tag *)(config_block + offset); 486 tag->id = TAG_MAC; 487 tag->flags = TAG_FLAG_VALID; 488 tag->len = 2; 489 offset += 4; 490 491 memcpy(config_block + offset, &tdx_eth_addr, 6); 492 offset += 6; 493 memset(config_block + offset, 0, 32 - offset); 494 495 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC) 496 err = tdx_cfg_block_mmc_storage(config_block, 1); 497 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND) 498 err = write_tdx_cfg_block_to_nand(config_block); 499 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR) 500 err = write_tdx_cfg_block_to_nor(config_block); 501 #else 502 err = -EINVAL; 503 #endif 504 if (err) { 505 printf("Failed to write Toradex config block: %d\n", ret); 506 ret = CMD_RET_FAILURE; 507 goto out; 508 } 509 510 printf("Toradex config block successfully written\n"); 511 512 out: 513 free(config_block); 514 return ret; 515 } 516 517 static int do_cfgblock(cmd_tbl_t *cmdtp, int flag, int argc, 518 char * const argv[]) 519 { 520 int ret; 521 522 if (argc < 2) 523 return CMD_RET_USAGE; 524 525 if (!strcmp(argv[1], "create")) { 526 return do_cfgblock_create(cmdtp, flag, argc, argv); 527 } else if (!strcmp(argv[1], "reload")) { 528 ret = read_tdx_cfg_block(); 529 if (ret) { 530 printf("Failed to reload Toradex config block: %d\n", 531 ret); 532 return CMD_RET_FAILURE; 533 } 534 return CMD_RET_SUCCESS; 535 } 536 537 return CMD_RET_USAGE; 538 } 539 540 U_BOOT_CMD( 541 cfgblock, 3, 0, do_cfgblock, 542 "Toradex config block handling commands", 543 "create [barcode] - (Re-)create Toradex config block\n" 544 "cfgblock reload - Reload Toradex config block from flash" 545 ); 546