toradex: config block handling

Add Toradex factory configuration block handling. The config block is a
data structure which gets stored to flash during production testing. The
structure holds such information as board resp. hardware revision,
product ID and serial number which is used as the NIC part of the
Ethernet MAC address as well. The config block will be read upon boot by
the show_board_info() function, displayed as part of the board
information and passed to Linux via device tree or ATAGs.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>

6 files changed, 873 insertions, 0 deletions

diff --git a/board/toradex/common/Kconfig b/board/toradex/common/Kconfig
new file mode 100644
index 00000000000..b33baeff847
--- /dev/null
+++ b/board/toradex/common/Kconfig
@@ -0,0 +1,69 @@
+# Copyright (c) 2016 Toradex, Inc.
+# SPDX-License-Identifier:	GPL-2.0+
+
+menuconfig TDX_CFG_BLOCK
+	bool "Enable Toradex config block support"
+	select OF_BOARD_SETUP
+	help
+	  The Toradex config block stored production data on the on-module
+	  flash device (NAND, NOR or eMMC). The area is normally preserved by
+	  software and contains the serial number (out of which the MAC
+	  address is generated) and the exact module type.
+
+# Helper config to determine the correct default location of the cfg block
+config TDX_HAVE_MMC
+	bool
+
+config TDX_HAVE_NAND
+	bool
+
+config TDX_HAVE_NOR
+	bool
+
+if TDX_CFG_BLOCK
+
+config TDX_CFG_BLOCK_IS_IN_MMC
+	bool
+	depends on TDX_HAVE_MMC
+	default y
+
+config TDX_CFG_BLOCK_IS_IN_NAND
+	bool
+	depends on TDX_HAVE_NAND
+	default y
+
+config TDX_CFG_BLOCK_IS_IN_NOR
+	bool
+	depends on TDX_HAVE_NOR
+	default y
+
+config TDX_CFG_BLOCK_DEV
+	int "Toradex config block eMMC device ID"
+	depends on TDX_CFG_BLOCK_IS_IN_MMC
+
+config TDX_CFG_BLOCK_PART
+	int "Toradex config block eMMC partition ID"
+	depends on TDX_CFG_BLOCK_IS_IN_MMC
+
+config TDX_CFG_BLOCK_OFFSET
+	int "Toradex config block offset"
+	help
+	  Specify the byte offset of the Toradex config block within the flash
+	  device the config block is stored on.
+
+config TDX_CFG_BLOCK_OFFSET2
+	int "Toradex config block offset, second instance"
+	default 0
+	help
+	  Specify the byte offset of the 2nd instance of the Toradex config block
+	  within the flash device the config block is stored on.
+	  Set to 0 on modules which have no 2nd instance.
+
+config TDX_CFG_BLOCK_2ND_ETHADDR
+	bool "Set the second Ethernet address"
+	help
+	  For each serial number two Ethernet addresses are available for dual
+	  Ethernet carrier boards. This options enables the code to set the
+	  second Ethernet address as environment variable (eth1addr).
+
+endif
diff --git a/board/toradex/common/Makefile b/board/toradex/common/Makefile
new file mode 100644
index 00000000000..d645f5a4ad3
--- /dev/null
+++ b/board/toradex/common/Makefile
@@ -0,0 +1,11 @@
+# Copyright (c) 2016 Toradex, Inc.
+# SPDX-License-Identifier:	GPL-2.0+
+
+# Common for all Toradex modules
+ifeq ($(CONFIG_SPL_BUILD),y)
+# Necessary to create built-in.o
+obj- := __dummy__.o
+else
+obj-$(CONFIG_TDX_CFG_BLOCK) += tdx-cfg-block.o
+obj-y += tdx-common.o
+endif
diff --git a/board/toradex/common/tdx-cfg-block.c b/board/toradex/common/tdx-cfg-block.c
new file mode 100644
index 00000000000..0014ce80a18
--- /dev/null
+++ b/board/toradex/common/tdx-cfg-block.c
@@ -0,0 +1,544 @@
+/*
+ * Copyright (c) 2016 Toradex, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include "tdx-cfg-block.h"
+
+#if defined(CONFIG_TARGET_APALIS_IMX6) || defined(CONFIG_TARGET_COLIBRI_IMX6)
+#include <asm/arch/sys_proto.h>
+#else
+#define is_cpu_type(cpu) (0)
+#endif
+#if defined(CONFIG_CPU_PXA27X)
+#include <asm/arch-pxa/pxa.h>
+#else
+#define cpu_is_pxa27x(cpu) (0)
+#endif
+#include <cli.h>
+#include <console.h>
+#include <flash.h>
+#include <malloc.h>
+#include <mmc.h>
+#include <nand.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define TAG_VALID	0xcf01
+#define TAG_MAC		0x0000
+#define TAG_HW		0x0008
+#define TAG_INVALID	0xffff
+
+#define TAG_FLAG_VALID	0x1
+
+#if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC)
+#define TDX_CFG_BLOCK_MAX_SIZE 512
+#elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND)
+#define TDX_CFG_BLOCK_MAX_SIZE 64
+#elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR)
+#define TDX_CFG_BLOCK_MAX_SIZE 64
+#else
+#error Toradex config block location not set
+#endif
+
+struct toradex_tag {
+	u32 len:14;
+	u32 flags:2;
+	u32 id:16;
+};
+
+bool valid_cfgblock;
+struct toradex_hw tdx_hw_tag;
+struct toradex_eth_addr tdx_eth_addr;
+u32 tdx_serial;
+
+const char * const toradex_modules[] = {
+	 [0] = "UNKNOWN MODULE",
+	 [1] = "Colibri PXA270 312MHz",
+	 [2] = "Colibri PXA270 520MHz",
+	 [3] = "Colibri PXA320 806MHz",
+	 [4] = "Colibri PXA300 208MHz",
+	 [5] = "Colibri PXA310 624MHz",
+	 [6] = "Colibri PXA320 806MHz IT",
+	 [7] = "Colibri PXA300 208MHz XT",
+	 [8] = "Colibri PXA270 312MHz",
+	 [9] = "Colibri PXA270 520MHz",
+	[10] = "Colibri VF50 128MB", /* not currently on sale */
+	[11] = "Colibri VF61 256MB",
+	[12] = "Colibri VF61 256MB IT",
+	[13] = "Colibri VF50 128MB IT",
+	[14] = "Colibri iMX6 Solo 256MB",
+	[15] = "Colibri iMX6 DualLite 512MB",
+	[16] = "Colibri iMX6 Solo 256MB IT",
+	[17] = "Colibri iMX6 DualLite 512MB IT",
+	[18] = "UNKNOWN MODULE",
+	[19] = "UNKNOWN MODULE",
+	[20] = "Colibri T20 256MB",
+	[21] = "Colibri T20 512MB",
+	[22] = "Colibri T20 512MB IT",
+	[23] = "Colibri T30 1GB",
+	[24] = "Colibri T20 256MB IT",
+	[25] = "Apalis T30 2GB",
+	[26] = "Apalis T30 1GB",
+	[27] = "Apalis iMX6 Quad 1GB",
+	[28] = "Apalis iMX6 Quad 2GB IT",
+	[29] = "Apalis iMX6 Dual 512MB",
+	[30] = "Colibri T30 1GB IT",
+	[31] = "Apalis T30 1GB IT",
+	[32] = "Colibri iMX7 Solo 256MB",
+	[33] = "Colibri iMX7 Dual 512MB",
+	[34] = "Apalis TK1 2GB",
+	[35] = "Apalis iMX6 Dual 1GB IT",
+};
+
+#ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_MMC
+static int tdx_cfg_block_mmc_storage(u8 *config_block, int write)
+{
+	struct mmc *mmc;
+	int dev = CONFIG_TDX_CFG_BLOCK_DEV;
+	int offset = CONFIG_TDX_CFG_BLOCK_OFFSET;
+	uint part = CONFIG_TDX_CFG_BLOCK_PART;
+	uint blk_start;
+	int ret = 0;
+
+	/* Read production parameter config block from eMMC */
+	mmc = find_mmc_device(dev);
+	if (!mmc) {
+		puts("No MMC card found\n");
+		ret = -ENODEV;
+		goto out;
+	}
+	if (part != mmc->block_dev.hwpart) {
+		if (blk_select_hwpart_devnum(IF_TYPE_MMC, dev, part)) {
+			puts("MMC partition switch failed\n");
+			ret = -ENODEV;
+			goto out;
+		}
+	}
+	if (offset < 0)
+		offset += mmc->capacity;
+	blk_start = ALIGN(offset, mmc->write_bl_len) / mmc->write_bl_len;
+
+	if (!write) {
+		/* Careful reads a whole block of 512 bytes into config_block */
+		if (blk_dread(mmc_get_blk_desc(mmc), blk_start, 1,
+			      (unsigned char *)config_block) != 1) {
+			ret = -EIO;
+			goto out;
+		}
+		/* Flush cache after read */
+		flush_cache((ulong)(unsigned char *)config_block, 512);
+	} else {
+		/* Just writing one 512 byte block */
+		if (blk_dwrite(mmc_get_blk_desc(mmc), blk_start, 1,
+			       (unsigned char *)config_block) != 1) {
+			ret = -EIO;
+			goto out;
+		}
+	}
+
+out:
+	/* Switch back to regular eMMC user partition */
+	blk_select_hwpart_devnum(IF_TYPE_MMC, 0, 0);
+
+	return ret;
+}
+#endif
+
+#ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_NAND
+static int read_tdx_cfg_block_from_nand(unsigned char *config_block)
+{
+	size_t size = TDX_CFG_BLOCK_MAX_SIZE;
+
+	/* Read production parameter config block from NAND page */
+	return nand_read_skip_bad(nand_info[0], CONFIG_TDX_CFG_BLOCK_OFFSET,
+			 &size, NULL, TDX_CFG_BLOCK_MAX_SIZE, config_block);
+}
+
+static int write_tdx_cfg_block_to_nand(unsigned char *config_block)
+{
+	size_t size = TDX_CFG_BLOCK_MAX_SIZE;
+
+	/* Write production parameter config block to NAND page */
+	return nand_write_skip_bad(nand_info[0], CONFIG_TDX_CFG_BLOCK_OFFSET,
+				   &size, NULL, TDX_CFG_BLOCK_MAX_SIZE,
+				   config_block, WITH_WR_VERIFY);
+}
+#endif
+
+#ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_NOR
+static int read_tdx_cfg_block_from_nor(unsigned char *config_block)
+{
+	/* Read production parameter config block from NOR flash */
+	memcpy(config_block, (void *)CONFIG_TDX_CFG_BLOCK_OFFSET,
+	       TDX_CFG_BLOCK_MAX_SIZE);
+	return 0;
+}
+
+static int write_tdx_cfg_block_to_nor(unsigned char *config_block)
+{
+	/* Write production parameter config block to NOR flash */
+	return flash_write((void *)config_block, CONFIG_TDX_CFG_BLOCK_OFFSET,
+			   TDX_CFG_BLOCK_MAX_SIZE);
+}
+#endif
+
+int read_tdx_cfg_block(void)
+{
+	int ret = 0;
+	u8 *config_block = NULL;
+	struct toradex_tag *tag;
+	size_t size = TDX_CFG_BLOCK_MAX_SIZE;
+	int offset;
+
+	/* Allocate RAM area for config block */
+	config_block = memalign(ARCH_DMA_MINALIGN, size);
+	if (!config_block) {
+		printf("Not enough malloc space available!\n");
+		return -ENOMEM;
+	}
+
+	memset(config_block, 0, size);
+
+#if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC)
+	ret = tdx_cfg_block_mmc_storage(config_block, 0);
+#elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND)
+	ret = read_tdx_cfg_block_from_nand(config_block);
+#elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR)
+	ret = read_tdx_cfg_block_from_nor(config_block);
+#else
+	ret = -EINVAL;
+#endif
+	if (ret)
+		goto out;
+
+	/* Expect a valid tag first */
+	tag = (struct toradex_tag *)config_block;
+	if (tag->flags != TAG_FLAG_VALID || tag->id != TAG_VALID) {
+		valid_cfgblock = false;
+		ret = -EINVAL;
+		goto out;
+	}
+	valid_cfgblock = true;
+	offset = 4;
+
+	while (offset < TDX_CFG_BLOCK_MAX_SIZE) {
+		tag = (struct toradex_tag *)(config_block + offset);
+		offset += 4;
+		if (tag->id == TAG_INVALID)
+			break;
+
+		if (tag->flags == TAG_FLAG_VALID) {
+			switch (tag->id) {
+			case TAG_MAC:
+				memcpy(&tdx_eth_addr, config_block + offset,
+				       6);
+
+				/* NIC part of MAC address is serial number */
+				tdx_serial = ntohl(tdx_eth_addr.nic) >> 8;
+				break;
+			case TAG_HW:
+				memcpy(&tdx_hw_tag, config_block + offset, 8);
+				break;
+			}
+		}
+
+		/* Get to next tag according to current tags length */
+		offset += tag->len * 4;
+	}
+
+	/* Cap product id to avoid issues with a yet unknown one */
+	if (tdx_hw_tag.prodid > (sizeof(toradex_modules) /
+				  sizeof(toradex_modules[0])))
+		tdx_hw_tag.prodid = 0;
+
+out:
+	free(config_block);
+	return ret;
+}
+
+static int get_cfgblock_interactive(void)
+{
+	char message[CONFIG_SYS_CBSIZE];
+	char *soc;
+	char it = 'n';
+	int len;
+
+	if (cpu_is_pxa27x())
+		sprintf(message, "Is the module the 312 MHz version? [y/N] ");
+	else
+		sprintf(message, "Is the module an IT version? [y/N] ");
+
+	len = cli_readline(message);
+	it = console_buffer[0];
+
+	soc = getenv("soc");
+	if (!strcmp("mx6", soc)) {
+#ifdef CONFIG_MACH_TYPE
+		if (it == 'y' || it == 'Y')
+			if (is_cpu_type(MXC_CPU_MX6Q))
+				tdx_hw_tag.prodid = APALIS_IMX6Q_IT;
+			else
+				tdx_hw_tag.prodid = APALIS_IMX6D_IT;
+		else
+			if (is_cpu_type(MXC_CPU_MX6Q))
+				tdx_hw_tag.prodid = APALIS_IMX6Q;
+			else
+				tdx_hw_tag.prodid = APALIS_IMX6D;
+#else
+		if (it == 'y' || it == 'Y')
+			if (is_cpu_type(MXC_CPU_MX6DL))
+				tdx_hw_tag.prodid = COLIBRI_IMX6DL_IT;
+			else
+				tdx_hw_tag.prodid = COLIBRI_IMX6S_IT;
+		else
+			if (is_cpu_type(MXC_CPU_MX6DL))
+				tdx_hw_tag.prodid = COLIBRI_IMX6DL;
+			else
+				tdx_hw_tag.prodid = COLIBRI_IMX6S;
+#endif /* CONFIG_MACH_TYPE */
+	} else if (!strcmp("imx7d", soc)) {
+		tdx_hw_tag.prodid = COLIBRI_IMX7D;
+	} else if (!strcmp("imx7s", soc)) {
+		tdx_hw_tag.prodid = COLIBRI_IMX7S;
+	} else if (!strcmp("tegra20", soc)) {
+		if (it == 'y' || it == 'Y')
+			if (gd->ram_size == 0x10000000)
+				tdx_hw_tag.prodid = COLIBRI_T20_256MB_IT;
+			else
+				tdx_hw_tag.prodid = COLIBRI_T20_512MB_IT;
+		else
+			if (gd->ram_size == 0x10000000)
+				tdx_hw_tag.prodid = COLIBRI_T20_256MB;
+			else
+				tdx_hw_tag.prodid = COLIBRI_T20_512MB;
+	} else if (cpu_is_pxa27x()) {
+		if (it == 'y' || it == 'Y')
+			tdx_hw_tag.prodid = COLIBRI_PXA270_312MHZ;
+		else
+			tdx_hw_tag.prodid = COLIBRI_PXA270_520MHZ;
+#ifdef CONFIG_MACH_TYPE
+	} else if (!strcmp("tegra30", soc)) {
+		if (CONFIG_MACH_TYPE == MACH_TYPE_APALIS_T30) {
+			if (it == 'y' || it == 'Y')
+				tdx_hw_tag.prodid = APALIS_T30_IT;
+			else
+				if (gd->ram_size == 0x40000000)
+					tdx_hw_tag.prodid = APALIS_T30_1GB;
+				else
+					tdx_hw_tag.prodid = APALIS_T30_2GB;
+		} else {
+			if (it == 'y' || it == 'Y')
+				tdx_hw_tag.prodid = COLIBRI_T30_IT;
+			else
+				tdx_hw_tag.prodid = COLIBRI_T30;
+		}
+#endif /* CONFIG_MACH_TYPE */
+	} else if (!strcmp("tegra124", soc)) {
+		tdx_hw_tag.prodid = APALIS_TK1_2GB;
+	} else if (!strcmp("vf500", soc)) {
+		if (it == 'y' || it == 'Y')
+			tdx_hw_tag.prodid = COLIBRI_VF50_IT;
+		else
+			tdx_hw_tag.prodid = COLIBRI_VF50;
+	} else if (!strcmp("vf610", soc)) {
+		if (it == 'y' || it == 'Y')
+			tdx_hw_tag.prodid = COLIBRI_VF61_IT;
+		else
+			tdx_hw_tag.prodid = COLIBRI_VF61;
+	} else {
+		printf("Module type not detectable due to unknown SoC\n");
+		return -1;
+	}
+
+	while (len < 4) {
+		sprintf(message, "Enter the module version (e.g. V1.1B): V");
+		len = cli_readline(message);
+	}
+
+	tdx_hw_tag.ver_major = console_buffer[0] - '0';
+	tdx_hw_tag.ver_minor = console_buffer[2] - '0';
+	tdx_hw_tag.ver_assembly = console_buffer[3] - 'A';
+
+	if (cpu_is_pxa27x() && (tdx_hw_tag.ver_major == 1))
+		tdx_hw_tag.prodid -= (COLIBRI_PXA270_312MHZ -
+				       COLIBRI_PXA270_V1_312MHZ);
+
+	while (len < 8) {
+		sprintf(message, "Enter module serial number: ");
+		len = cli_readline(message);
+	}
+
+	tdx_serial = simple_strtoul(console_buffer, NULL, 10);
+
+	return 0;
+}
+
+static int get_cfgblock_barcode(char *barcode)
+{
+	if (strlen(barcode) < 16) {
+		printf("Argument too short, barcode is 16 chars long\n");
+		return -1;
+	}
+
+	/* Get hardware information from the first 8 digits */
+	tdx_hw_tag.ver_major = barcode[4] - '0';
+	tdx_hw_tag.ver_minor = barcode[5] - '0';
+	tdx_hw_tag.ver_assembly = barcode[7] - '0';
+
+	barcode[4] = '\0';
+	tdx_hw_tag.prodid = simple_strtoul(barcode, NULL, 10);
+
+	/* Parse second part of the barcode (serial number */
+	barcode += 8;
+	tdx_serial = simple_strtoul(barcode, NULL, 10);
+
+	return 0;
+}
+
+static int do_cfgblock_create(cmd_tbl_t *cmdtp, int flag, int argc,
+			      char * const argv[])
+{
+	u8 *config_block;
+	struct toradex_tag *tag;
+	size_t size = TDX_CFG_BLOCK_MAX_SIZE;
+	int offset = 0;
+	int ret = CMD_RET_SUCCESS;
+	int err;
+
+	/* Allocate RAM area for config block */
+	config_block = memalign(ARCH_DMA_MINALIGN, size);
+	if (!config_block) {
+		printf("Not enough malloc space available!\n");
+		return CMD_RET_FAILURE;
+	}
+
+	memset(config_block, 0xff, size);
+
+	read_tdx_cfg_block();
+	if (valid_cfgblock) {
+#if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND)
+		/*
+		 * On NAND devices, recreation is only allowed if the page is
+		 * empty (config block invalid...)
+		 */
+		printf("NAND erase block %d need to be erased before creating a Toradex config block\n",
+		       CONFIG_TDX_CFG_BLOCK_OFFSET / nand_info[0]->erasesize);
+		goto out;
+#elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR)
+		/*
+		 * On NOR devices, recreation is only allowed if the sector is
+		 * empty and write protection is off (config block invalid...)
+		 */
+		printf("NOR sector at offset 0x%02x need to be erased and unprotected before creating a Toradex config block\n",
+		       CONFIG_TDX_CFG_BLOCK_OFFSET);
+		goto out;
+#else
+		char message[CONFIG_SYS_CBSIZE];
+		sprintf(message,
+			"A valid Toradex config block is present, still recreate? [y/N] ");
+
+		if (!cli_readline(message))
+			goto out;
+
+		if (console_buffer[0] != 'y' && console_buffer[0] != 'Y')
+			goto out;
+#endif
+	}
+
+	/* Parse new Toradex config block data... */
+	if (argc < 3)
+		err = get_cfgblock_interactive();
+	else
+		err = get_cfgblock_barcode(argv[2]);
+
+	if (err) {
+		ret = CMD_RET_FAILURE;
+		goto out;
+	}
+
+	/* Convert serial number to MAC address (the storage format) */
+	tdx_eth_addr.oui = htonl(0x00142dUL << 8);
+	tdx_eth_addr.nic = htonl(tdx_serial << 8);
+
+	/* Valid Tag */
+	tag = (struct toradex_tag *)config_block;
+	tag->id = TAG_VALID;
+	tag->flags = TAG_FLAG_VALID;
+	tag->len = 0;
+	offset += 4;
+
+	/* Product Tag */
+	tag = (struct toradex_tag *)(config_block + offset);
+	tag->id = TAG_HW;
+	tag->flags = TAG_FLAG_VALID;
+	tag->len = 2;
+	offset += 4;
+
+	memcpy(config_block + offset, &tdx_hw_tag, 8);
+	offset += 8;
+
+	/* MAC Tag */
+	tag = (struct toradex_tag *)(config_block + offset);
+	tag->id = TAG_MAC;
+	tag->flags = TAG_FLAG_VALID;
+	tag->len = 2;
+	offset += 4;
+
+	memcpy(config_block + offset, &tdx_eth_addr, 6);
+	offset += 6;
+	memset(config_block + offset, 0, 32 - offset);
+
+#if defined(CONFIG_TDX_CFG_BLOCK_IS_IN_MMC)
+	err = tdx_cfg_block_mmc_storage(config_block, 1);
+#elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NAND)
+	err = write_tdx_cfg_block_to_nand(config_block);
+#elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_NOR)
+	err = write_tdx_cfg_block_to_nor(config_block);
+#else
+	err = -EINVAL;
+#endif
+	if (err) {
+		printf("Failed to write Toradex config block: %d\n", ret);
+		ret = CMD_RET_FAILURE;
+		goto out;
+	}
+
+	printf("Toradex config block successfully written\n");
+
+out:
+	free(config_block);
+	return ret;
+}
+
+static int do_cfgblock(cmd_tbl_t *cmdtp, int flag, int argc,
+		       char * const argv[])
+{
+	int ret;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	if (!strcmp(argv[1], "create")) {
+		return do_cfgblock_create(cmdtp, flag, argc, argv);
+	} else if (!strcmp(argv[1], "reload")) {
+		ret = read_tdx_cfg_block();
+		if (ret) {
+			printf("Failed to reload Toradex config block: %d\n",
+			       ret);
+			return CMD_RET_FAILURE;
+		}
+		return CMD_RET_SUCCESS;
+	}
+
+	return CMD_RET_USAGE;
+}
+
+U_BOOT_CMD(
+	cfgblock, 3, 0, do_cfgblock,
+	"Toradex config block handling commands",
+	"create [barcode] - (Re-)create Toradex config block\n"
+	"cfgblock reload - Reload Toradex config block from flash"
+);
diff --git a/board/toradex/common/tdx-cfg-block.h b/board/toradex/common/tdx-cfg-block.h
new file mode 100644
index 00000000000..fd7c362cd7d
--- /dev/null
+++ b/board/toradex/common/tdx-cfg-block.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2016 Toradex, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _TDX_CFG_BLOCK_H
+#define _TDX_CFG_BLOCK_H
+
+#include "tdx-common.h"
+
+struct toradex_hw {
+	u16 ver_major;
+	u16 ver_minor;
+	u16 ver_assembly;
+	u16 prodid;
+};
+
+struct toradex_eth_addr {
+	u32 oui:24;
+	u32 nic:24;
+} __attribute__((__packed__));
+
+enum {
+	COLIBRI_PXA270_V1_312MHZ = 1,
+	COLIBRI_PXA270_V1_520MHZ,
+	COLIBRI_PXA320,
+	COLIBRI_PXA300,
+	COLIBRI_PXA310,
+	COLIBRI_PXA320_IT,
+	COLIBRI_PXA300_XT,
+	COLIBRI_PXA270_312MHZ,
+	COLIBRI_PXA270_520MHZ,
+	COLIBRI_VF50, /* not currently on sale */
+	COLIBRI_VF61,
+	COLIBRI_VF61_IT,
+	COLIBRI_VF50_IT,
+	COLIBRI_IMX6S,
+	COLIBRI_IMX6DL,
+	COLIBRI_IMX6S_IT,
+	COLIBRI_IMX6DL_IT,
+	COLIBRI_T20_256MB = 20,
+	COLIBRI_T20_512MB,
+	COLIBRI_T20_512MB_IT,
+	COLIBRI_T30,
+	COLIBRI_T20_256MB_IT,
+	APALIS_T30_2GB,
+	APALIS_T30_1GB,
+	APALIS_IMX6Q,
+	APALIS_IMX6Q_IT,
+	APALIS_IMX6D,
+	COLIBRI_T30_IT,
+	APALIS_T30_IT,
+	COLIBRI_IMX7S,
+	COLIBRI_IMX7D,
+	APALIS_TK1_2GB,
+	APALIS_IMX6D_IT,
+};
+
+extern const char * const toradex_modules[];
+extern bool valid_cfgblock;
+extern struct toradex_hw tdx_hw_tag;
+extern struct toradex_eth_addr tdx_eth_addr;
+extern u32 tdx_serial;
+
+int read_tdx_cfg_block(void);
+
+#endif /* _TDX_CFG_BLOCK_H */
diff --git a/board/toradex/common/tdx-common.c b/board/toradex/common/tdx-common.c
new file mode 100644
index 00000000000..f1ab7946773
--- /dev/null
+++ b/board/toradex/common/tdx-common.c
@@ -0,0 +1,168 @@
+/*
+ * Copyright (c) 2016 Toradex, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <g_dnl.h>
+#include <libfdt.h>
+
+#include "tdx-cfg-block.h"
+#include "tdx-common.h"
+
+#ifdef CONFIG_TDX_CFG_BLOCK
+static char tdx_serial_str[9];
+static char tdx_board_rev_str[6];
+
+#ifdef CONFIG_REVISION_TAG
+u32 get_board_rev(void)
+{
+	/* Check validity */
+	if (!tdx_hw_tag.ver_major)
+		return 0;
+
+	return ((tdx_hw_tag.ver_major & 0xff) << 8) |
+		((tdx_hw_tag.ver_minor & 0xf) << 4) |
+		((tdx_hw_tag.ver_assembly & 0xf) + 0xa);
+}
+#endif /* CONFIG_TDX_CFG_BLOCK */
+
+#ifdef CONFIG_SERIAL_TAG
+void get_board_serial(struct tag_serialnr *serialnr)
+{
+	int array[8];
+	unsigned int serial = tdx_serial;
+	int i;
+
+	serialnr->low = 0;
+	serialnr->high = 0;
+
+	/* Check validity */
+	if (serial) {
+		/*
+		 * Convert to Linux serial number format (hexadecimal coded
+		 * decimal)
+		 */
+		i = 7;
+		while (serial) {
+			array[i--] = serial % 10;
+			serial /= 10;
+		}
+		while (i >= 0)
+			array[i--] = 0;
+		serial = array[0];
+		for (i = 1; i < 8; i++) {
+			serial *= 16;
+			serial += array[i];
+		}
+
+		serialnr->low = serial;
+	}
+}
+#endif /* CONFIG_SERIAL_TAG */
+
+int show_board_info(void)
+{
+	unsigned char ethaddr[6];
+
+	if (read_tdx_cfg_block()) {
+		printf("Missing Toradex config block\n");
+		checkboard();
+		return 0;
+	}
+
+	/* board serial-number */
+	sprintf(tdx_serial_str, "%08u", tdx_serial);
+	sprintf(tdx_board_rev_str, "V%1d.%1d%c",
+		tdx_hw_tag.ver_major,
+		tdx_hw_tag.ver_minor,
+		(char)tdx_hw_tag.ver_assembly + 'A');
+
+	setenv("serial#", tdx_serial_str);
+
+	/*
+	 * Check if environment contains a valid MAC address,
+	 * set the one from config block if not
+	 */
+	if (!eth_getenv_enetaddr("ethaddr", ethaddr))
+		eth_setenv_enetaddr("ethaddr", (u8 *)&tdx_eth_addr);
+
+#ifdef CONFIG_TDX_CFG_BLOCK_2ND_ETHADDR
+	if (!eth_getenv_enetaddr("eth1addr", ethaddr)) {
+		/*
+		 * Secondary MAC address is allocated from block
+		 * 0x100000 higher then the first MAC address
+		 */
+		memcpy(ethaddr, &tdx_eth_addr, 6);
+		ethaddr[3] += 0x10;
+		eth_setenv_enetaddr("eth1addr", ethaddr);
+	}
+#endif
+
+	printf("Model: Toradex %s %s, Serial# %s\n",
+	       toradex_modules[tdx_hw_tag.prodid],
+	       tdx_board_rev_str,
+	       tdx_serial_str);
+
+	return 0;
+}
+
+#ifdef CONFIG_USBDOWNLOAD_GADGET
+int g_dnl_bind_fixup(struct usb_device_descriptor *dev, const char *name)
+{
+	unsigned short usb_pid;
+
+	usb_pid = TORADEX_USB_PRODUCT_NUM_OFFSET + tdx_hw_tag.prodid;
+	put_unaligned(usb_pid, &dev->idProduct);
+
+	return 0;
+}
+#endif /* CONFIG_USBDOWNLOAD_GADGET */
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+int ft_board_setup(void *blob, bd_t *bd)
+{
+	if (tdx_serial) {
+		fdt_setprop(blob, 0, "serial-number", tdx_serial_str,
+			    strlen(tdx_serial_str) + 1);
+	}
+
+	if (tdx_hw_tag.ver_major) {
+		char prod_id[5];
+
+		sprintf(prod_id, "%04u", tdx_hw_tag.prodid);
+		fdt_setprop(blob, 0, "toradex,product-id", prod_id, 5);
+
+		fdt_setprop(blob, 0, "toradex,board-rev", tdx_board_rev_str,
+			    strlen(tdx_board_rev_str) + 1);
+	}
+
+	return 0;
+}
+#endif
+
+#else /* CONFIG_TDX_CFG_BLOCK */
+
+#ifdef CONFIG_REVISION_TAG
+u32 get_board_rev(void)
+{
+	return 0;
+}
+#endif /* CONFIG_REVISION_TAG */
+
+#ifdef CONFIG_SERIAL_TAG
+u32 get_board_serial(void)
+{
+	return 0;
+}
+#endif /* CONFIG_SERIAL_TAG */
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+int ft_board_setup(void *blob, bd_t *bd)
+{
+	return 0;
+}
+#endif
+
+#endif /* CONFIG_TDX_CFG_BLOCK */
diff --git a/board/toradex/common/tdx-common.h b/board/toradex/common/tdx-common.h
new file mode 100644
index 00000000000..f308ebda637
--- /dev/null
+++ b/board/toradex/common/tdx-common.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) 2016 Toradex, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _TDX_COMMON_H
+#define _TDX_COMMON_H
+
+#define TORADEX_USB_PRODUCT_NUM_OFFSET	0x4000
+#define TDX_USB_VID			0x1B67
+
+#endif /* _TDX_COMMON_H */