board/toradex/common/tdx-cfg-block.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2016-2019 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         [36] = "Colibri iMX6ULL 256MB",
  95         [37] = "Apalis iMX8 QuadMax 4GB Wi-Fi / Bluetooth",
  96         [38] = "Colibri iMX8X",
  97         [39] = "Colibri iMX7 Dual 1GB (eMMC)",
  98         [40] = "Colibri iMX6ULL 512MB Wi-Fi / Bluetooth IT",
  99         [41] = "Colibri iMX7 Dual 512MB EPDC",
 100         [42] = "Apalis TK1 4GB",
 101         [43] = "Colibri T20 512MB IT SETEK",
 102         [44] = "Colibri iMX6ULL 512MB IT",
 103         [45] = "Colibri iMX6ULL 512MB Wi-Fi / Bluetooth",
 104 };
 105
 106 #ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_MMC
 107 static int tdx_cfg_block_mmc_storage(u8 *config_block, int write)
 108 {
 109         struct mmc *mmc;
 110         int dev = CONFIG_TDX_CFG_BLOCK_DEV;
 111         int offset = CONFIG_TDX_CFG_BLOCK_OFFSET;
 112         uint part = CONFIG_TDX_CFG_BLOCK_PART;
 113         uint blk_start;
 114         int ret = 0;
 115
 116         /* Read production parameter config block from eMMC */
 117         mmc = find_mmc_device(dev);
 118         if (!mmc) {
 119                 puts("No MMC card found\n");
 120                 ret = -ENODEV;
 121                 goto out;
 122         }
 123         if (part != mmc_get_blk_desc(mmc)->hwpart) {
 124                 if (blk_select_hwpart_devnum(IF_TYPE_MMC, dev, part)) {
 125                         puts("MMC partition switch failed\n");
 126                         ret = -ENODEV;
 127                         goto out;
 128                 }
 129         }
 130         if (offset < 0)
 131                 offset += mmc->capacity;
 132         blk_start = ALIGN(offset, mmc->write_bl_len) / mmc->write_bl_len;
 133
 134         if (!write) {
 135                 /* Careful reads a whole block of 512 bytes into config_block */
 136                 if (blk_dread(mmc_get_blk_desc(mmc), blk_start, 1,
 137                               (unsigned char *)config_block) != 1) {
 138                         ret = -EIO;
 139                         goto out;
 140                 }
 141         } else {
 142                 /* Just writing one 512 byte block */
 143                 if (blk_dwrite(mmc_get_blk_desc(mmc), blk_start, 1,
 144                                (unsigned char *)config_block) != 1) {
 145                         ret = -EIO;
 146                         goto out;
 147                 }
 148         }
 149
 150 out:
 151         /* Switch back to regular eMMC user partition */
 152         blk_select_hwpart_devnum(IF_TYPE_MMC, 0, 0);
 153
 154         return ret;
 155 }
 156 #endif
 157
 158 #ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_NAND
 159 static int read_tdx_cfg_block_from_nand(unsigned char *config_block)
 160 {
 161         size_t size = TDX_CFG_BLOCK_MAX_SIZE;
 162         struct mtd_info *mtd = get_nand_dev_by_index(0);
 163
 164         if (!mtd)
 165                 return -ENODEV;
 166
 167         /* Read production parameter config block from NAND page */
 168         return nand_read_skip_bad(mtd, CONFIG_TDX_CFG_BLOCK_OFFSET,
 169                                   &size, NULL, TDX_CFG_BLOCK_MAX_SIZE,
 170                                   config_block);
 171 }
 172
 173 static int write_tdx_cfg_block_to_nand(unsigned char *config_block)
 174 {
 175         size_t size = TDX_CFG_BLOCK_MAX_SIZE;
 176
 177         /* Write production parameter config block to NAND page */
 178         return nand_write_skip_bad(get_nand_dev_by_index(0),
 179                                    CONFIG_TDX_CFG_BLOCK_OFFSET,
 180                                    &size, NULL, TDX_CFG_BLOCK_MAX_SIZE,
 181                                    config_block, WITH_WR_VERIFY);
 182 }
 183 #endif
 184
 185 #ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_NOR
 186 static int read_tdx_cfg_block_from_nor(unsigned char *config_block)
 187 {
 188         /* Read production parameter config block from NOR flash */
 189         memcpy(config_block, (void *)CONFIG_TDX_CFG_BLOCK_OFFSET,
 190                TDX_CFG_BLOCK_MAX_SIZE);
 191         return 0;
 192 }
 193
 194 static int write_tdx_cfg_block_to_nor(unsigned char *config_block)
 195 {
 196         /* Write production parameter config block to NOR flash */
 197         return flash_write((void *)config_block, CONFIG_TDX_CFG_BLOCK_OFFSET,
 198                            TDX_CFG_BLOCK_MAX_SIZE);
 199 }
 200 #endif
 201
 202 int read_tdx_cfg_block(void)
 203 {
 204         int ret = 0;
 205         u8 *config_block = NULL;
 206         struct toradex_tag *tag;
 207         size_t size = TDX_CFG_BLOCK_MAX_SIZE;
 208         int offset;
 209
 210         /* Allocate RAM area for config block */
 211         config_block = memalign(ARCH_DMA_MINALIGN, size);
 212         if (!config_block) {
 213                 printf("Not enough malloc space available!\n");
 214                 return -ENOMEM;
 215         }
 216
 217         memset(config_block, 0, size);
 218
 219 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC)
 220         ret = tdx_cfg_block_mmc_storage(config_block, 0);
 221 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND)
 222         ret = read_tdx_cfg_block_from_nand(config_block);
 223 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR)
 224         ret = read_tdx_cfg_block_from_nor(config_block);
 225 #else
 226         ret = -EINVAL;
 227 #endif
 228         if (ret)
 229                 goto out;
 230
 231         /* Expect a valid tag first */
 232         tag = (struct toradex_tag *)config_block;
 233         if (tag->flags != TAG_FLAG_VALID || tag->id != TAG_VALID) {
 234                 valid_cfgblock = false;
 235                 ret = -EINVAL;
 236                 goto out;
 237         }
 238         valid_cfgblock = true;
 239         offset = 4;
 240
 241         while (offset < TDX_CFG_BLOCK_MAX_SIZE) {
 242                 tag = (struct toradex_tag *)(config_block + offset);
 243                 offset += 4;
 244                 if (tag->id == TAG_INVALID)
 245                         break;
 246
 247                 if (tag->flags == TAG_FLAG_VALID) {
 248                         switch (tag->id) {
 249                         case TAG_MAC:
 250                                 memcpy(&tdx_eth_addr, config_block + offset,
 251                                        6);
 252
 253                                 /* NIC part of MAC address is serial number */
 254                                 tdx_serial = ntohl(tdx_eth_addr.nic) >> 8;
 255                                 break;
 256                         case TAG_HW:
 257                                 memcpy(&tdx_hw_tag, config_block + offset, 8);
 258                                 break;
 259                         }
 260                 }
 261
 262                 /* Get to next tag according to current tags length */
 263                 offset += tag->len * 4;
 264         }
 265
 266         /* Cap product id to avoid issues with a yet unknown one */
 267         if (tdx_hw_tag.prodid >= (sizeof(toradex_modules) /
 268                                   sizeof(toradex_modules[0])))
 269                 tdx_hw_tag.prodid = 0;
 270
 271 out:
 272         free(config_block);
 273         return ret;
 274 }
 275
 276 static int get_cfgblock_interactive(void)
 277 {
 278         char message[CONFIG_SYS_CBSIZE];
 279         char *soc;
 280         char it = 'n';
 281         int len;
 282
 283         /* Unknown module by default */
 284         tdx_hw_tag.prodid = 0;
 285
 286         if (cpu_is_pxa27x())
 287                 sprintf(message, "Is the module the 312 MHz version? [y/N] ");
 288         else
 289                 sprintf(message, "Is the module an IT version? [y/N] ");
 290
 291         len = cli_readline(message);
 292         it = console_buffer[0];
 293
 294         soc = env_get("soc");
 295         if (!strcmp("mx6", soc)) {
 296 #ifdef CONFIG_TARGET_APALIS_IMX6
 297                 if (it == 'y' || it == 'Y') {
 298                         if (is_cpu_type(MXC_CPU_MX6Q))
 299                                 tdx_hw_tag.prodid = APALIS_IMX6Q_IT;
 300                         else
 301                                 tdx_hw_tag.prodid = APALIS_IMX6D_IT;
 302                 } else {
 303                         if (is_cpu_type(MXC_CPU_MX6Q))
 304                                 tdx_hw_tag.prodid = APALIS_IMX6Q;
 305                         else
 306                                 tdx_hw_tag.prodid = APALIS_IMX6D;
 307                 }
 308 #elif CONFIG_TARGET_COLIBRI_IMX6
 309                 if (it == 'y' || it == 'Y') {
 310                         if (is_cpu_type(MXC_CPU_MX6DL))
 311                                 tdx_hw_tag.prodid = COLIBRI_IMX6DL_IT;
 312                         else if (is_cpu_type(MXC_CPU_MX6SOLO))
 313                                 tdx_hw_tag.prodid = COLIBRI_IMX6S_IT;
 314                 } else {
 315                         if (is_cpu_type(MXC_CPU_MX6DL))
 316                                 tdx_hw_tag.prodid = COLIBRI_IMX6DL;
 317                         else if (is_cpu_type(MXC_CPU_MX6SOLO))
 318                                 tdx_hw_tag.prodid = COLIBRI_IMX6S;
 319                 }
 320 #elif CONFIG_TARGET_COLIBRI_IMX6ULL
 321                 char wb = 'n';
 322
 323                 sprintf(message, "Does the module have Wi-Fi / Bluetooth? " \
 324                                  "[y/N] ");
 325                 len = cli_readline(message);
 326                 wb = console_buffer[0];
 327                 if (it == 'y' || it == 'Y') {
 328                         if (wb == 'y' || wb == 'Y')
 329                                 tdx_hw_tag.prodid = COLIBRI_IMX6ULL_WIFI_BT_IT;
 330                         else
 331                                 tdx_hw_tag.prodid = COLIBRI_IMX6ULL_IT;
 332                 } else {
 333                         if (wb == 'y' || wb == 'Y')
 334                                 tdx_hw_tag.prodid = COLIBRI_IMX6ULL_WIFI_BT;
 335                         else
 336                                 tdx_hw_tag.prodid = COLIBRI_IMX6ULL;
 337                 }
 338 #endif
 339         } else if (!strcmp("imx7d", soc))
 340                 tdx_hw_tag.prodid = COLIBRI_IMX7D;
 341         else if (!strcmp("imx7s", soc))
 342                 tdx_hw_tag.prodid = COLIBRI_IMX7S;
 343         else if (!strcmp("tegra20", soc)) {
 344                 if (it == 'y' || it == 'Y')
 345                         if (gd->ram_size == 0x10000000)
 346                                 tdx_hw_tag.prodid = COLIBRI_T20_256MB_IT;
 347                         else
 348                                 tdx_hw_tag.prodid = COLIBRI_T20_512MB_IT;
 349                 else
 350                         if (gd->ram_size == 0x10000000)
 351                                 tdx_hw_tag.prodid = COLIBRI_T20_256MB;
 352                         else
 353                                 tdx_hw_tag.prodid = COLIBRI_T20_512MB;
 354         } else if (cpu_is_pxa27x()) {
 355                 if (it == 'y' || it == 'Y')
 356                         tdx_hw_tag.prodid = COLIBRI_PXA270_312MHZ;
 357                 else
 358                         tdx_hw_tag.prodid = COLIBRI_PXA270_520MHZ;
 359         }
 360 #ifdef CONFIG_MACH_TYPE
 361         else if (!strcmp("tegra30", soc)) {
 362                 if (CONFIG_MACH_TYPE == MACH_TYPE_APALIS_T30) {
 363                         if (it == 'y' || it == 'Y')
 364                                 tdx_hw_tag.prodid = APALIS_T30_IT;
 365                         else
 366                                 if (gd->ram_size == 0x40000000)
 367                                         tdx_hw_tag.prodid = APALIS_T30_1GB;
 368                                 else
 369                                         tdx_hw_tag.prodid = APALIS_T30_2GB;
 370                 } else {
 371                         if (it == 'y' || it == 'Y')
 372                                 tdx_hw_tag.prodid = COLIBRI_T30_IT;
 373                         else
 374                                 tdx_hw_tag.prodid = COLIBRI_T30;
 375                 }
 376         }
 377 #endif /* CONFIG_MACH_TYPE */
 378         else if (!strcmp("tegra124", soc)) {
 379                 tdx_hw_tag.prodid = APALIS_TK1_2GB;
 380         } else if (!strcmp("vf500", soc)) {
 381                 if (it == 'y' || it == 'Y')
 382                         tdx_hw_tag.prodid = COLIBRI_VF50_IT;
 383                 else
 384                         tdx_hw_tag.prodid = COLIBRI_VF50;
 385         } else if (!strcmp("vf610", soc)) {
 386                 if (it == 'y' || it == 'Y')
 387                         tdx_hw_tag.prodid = COLIBRI_VF61_IT;
 388                 else
 389                         tdx_hw_tag.prodid = COLIBRI_VF61;
 390         }
 391
 392         if (!tdx_hw_tag.prodid) {
 393                 printf("Module type not detectable due to unknown SoC\n");
 394                 return -1;
 395         }
 396
 397         while (len < 4) {
 398                 sprintf(message, "Enter the module version (e.g. V1.1B): V");
 399                 len = cli_readline(message);
 400         }
 401
 402         tdx_hw_tag.ver_major = console_buffer[0] - '0';
 403         tdx_hw_tag.ver_minor = console_buffer[2] - '0';
 404         tdx_hw_tag.ver_assembly = console_buffer[3] - 'A';
 405
 406         if (cpu_is_pxa27x() && tdx_hw_tag.ver_major == 1)
 407                 tdx_hw_tag.prodid -= (COLIBRI_PXA270_312MHZ -
 408                                        COLIBRI_PXA270_V1_312MHZ);
 409
 410         while (len < 8) {
 411                 sprintf(message, "Enter module serial number: ");
 412                 len = cli_readline(message);
 413         }
 414
 415         tdx_serial = simple_strtoul(console_buffer, NULL, 10);
 416
 417         return 0;
 418 }
 419
 420 static int get_cfgblock_barcode(char *barcode)
 421 {
 422         if (strlen(barcode) < 16) {
 423                 printf("Argument too short, barcode is 16 chars long\n");
 424                 return -1;
 425         }
 426
 427         /* Get hardware information from the first 8 digits */
 428         tdx_hw_tag.ver_major = barcode[4] - '0';
 429         tdx_hw_tag.ver_minor = barcode[5] - '0';
 430         tdx_hw_tag.ver_assembly = barcode[7] - '0';
 431
 432         barcode[4] = '\0';
 433         tdx_hw_tag.prodid = simple_strtoul(barcode, NULL, 10);
 434
 435         /* Parse second part of the barcode (serial number */
 436         barcode += 8;
 437         tdx_serial = simple_strtoul(barcode, NULL, 10);
 438
 439         return 0;
 440 }
 441
 442 static int do_cfgblock_create(cmd_tbl_t *cmdtp, int flag, int argc,
 443                               char * const argv[])
 444 {
 445         u8 *config_block;
 446         struct toradex_tag *tag;
 447         size_t size = TDX_CFG_BLOCK_MAX_SIZE;
 448         int offset = 0;
 449         int ret = CMD_RET_SUCCESS;
 450         int err;
 451         int force_overwrite = 0;
 452
 453         /* Allocate RAM area for config block */
 454         config_block = memalign(ARCH_DMA_MINALIGN, size);
 455         if (!config_block) {
 456                 printf("Not enough malloc space available!\n");
 457                 return CMD_RET_FAILURE;
 458         }
 459
 460         memset(config_block, 0xff, size);
 461
 462         if (argc >= 3) {
 463                 if (argv[2][0] == '-' && argv[2][1] == 'y')
 464                         force_overwrite = 1;
 465         }
 466
 467         read_tdx_cfg_block();
 468         if (valid_cfgblock) {
 469 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND)
 470                 /*
 471                  * On NAND devices, recreation is only allowed if the page is
 472                  * empty (config block invalid...)
 473                  */
 474                 printf("NAND erase block %d need to be erased before creating" \
 475                        " a Toradex config block\n",
 476                        CONFIG_TDX_CFG_BLOCK_OFFSET /
 477                        get_nand_dev_by_index(0)->erasesize);
 478                 goto out;
 479 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR)
 480                 /*
 481                  * On NOR devices, recreation is only allowed if the sector is
 482                  * empty and write protection is off (config block invalid...)
 483                  */
 484                 printf("NOR sector at offset 0x%02x need to be erased and " \
 485                        "unprotected before creating a Toradex config block\n",
 486                        CONFIG_TDX_CFG_BLOCK_OFFSET);
 487                 goto out;
 488 #else
 489                 if (!force_overwrite) {
 490                         char message[CONFIG_SYS_CBSIZE];
 491
 492                         sprintf(message,
 493                                 "A valid Toradex config block is present, still recreate? [y/N] ");
 494
 495                         if (!cli_readline(message))
 496                                 goto out;
 497
 498                         if (console_buffer[0] != 'y' &&
 499                             console_buffer[0] != 'Y')
 500                                 goto out;
 501                 }
 502 #endif
 503         }
 504
 505         /* Parse new Toradex config block data... */
 506         if (argc < 3 || (force_overwrite && argc < 4)) {
 507                 err = get_cfgblock_interactive();
 508         } else {
 509                 if (force_overwrite)
 510                         err = get_cfgblock_barcode(argv[3]);
 511                 else
 512                         err = get_cfgblock_barcode(argv[2]);
 513         }
 514         if (err) {
 515                 ret = CMD_RET_FAILURE;
 516                 goto out;
 517         }
 518
 519         /* Convert serial number to MAC address (the storage format) */
 520         tdx_eth_addr.oui = htonl(0x00142dUL << 8);
 521         tdx_eth_addr.nic = htonl(tdx_serial << 8);
 522
 523         /* Valid Tag */
 524         tag = (struct toradex_tag *)config_block;
 525         tag->id = TAG_VALID;
 526         tag->flags = TAG_FLAG_VALID;
 527         tag->len = 0;
 528         offset += 4;
 529
 530         /* Product Tag */
 531         tag = (struct toradex_tag *)(config_block + offset);
 532         tag->id = TAG_HW;
 533         tag->flags = TAG_FLAG_VALID;
 534         tag->len = 2;
 535         offset += 4;
 536
 537         memcpy(config_block + offset, &tdx_hw_tag, 8);
 538         offset += 8;
 539
 540         /* MAC Tag */
 541         tag = (struct toradex_tag *)(config_block + offset);
 542         tag->id = TAG_MAC;
 543         tag->flags = TAG_FLAG_VALID;
 544         tag->len = 2;
 545         offset += 4;
 546
 547         memcpy(config_block + offset, &tdx_eth_addr, 6);
 548         offset += 6;
 549         memset(config_block + offset, 0, 32 - offset);
 550
 551 #if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC)
 552         err = tdx_cfg_block_mmc_storage(config_block, 1);
 553 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND)
 554         err = write_tdx_cfg_block_to_nand(config_block);
 555 #elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR)
 556         err = write_tdx_cfg_block_to_nor(config_block);
 557 #else
 558         err = -EINVAL;
 559 #endif
 560         if (err) {
 561                 printf("Failed to write Toradex config block: %d\n", ret);
 562                 ret = CMD_RET_FAILURE;
 563                 goto out;
 564         }
 565
 566         printf("Toradex config block successfully written\n");
 567
 568 out:
 569         free(config_block);
 570         return ret;
 571 }
 572
 573 static int do_cfgblock(cmd_tbl_t *cmdtp, int flag, int argc,
 574                        char * const argv[])
 575 {
 576         int ret;
 577
 578         if (argc < 2)
 579                 return CMD_RET_USAGE;
 580
 581         if (!strcmp(argv[1], "create")) {
 582                 return do_cfgblock_create(cmdtp, flag, argc, argv);
 583         } else if (!strcmp(argv[1], "reload")) {
 584                 ret = read_tdx_cfg_block();
 585                 if (ret) {
 586                         printf("Failed to reload Toradex config block: %d\n",
 587                                ret);
 588                         return CMD_RET_FAILURE;
 589                 }
 590                 return CMD_RET_SUCCESS;
 591         }
 592
 593         return CMD_RET_USAGE;
 594 }
 595
 596 U_BOOT_CMD(
 597         cfgblock, 4, 0, do_cfgblock,
 598         "Toradex config block handling commands",
 599         "create [-y] [barcode] - (Re-)create Toradex config block\n"
 600         "cfgblock reload - Reload Toradex config block from flash"
 601 );