diff options
Diffstat (limited to 'board/toradex/common/tdx-cfg-block.c')
| -rw-r--r-- | board/toradex/common/tdx-cfg-block.c | 544 |
1 files changed, 544 insertions, 0 deletions
diff --git a/board/toradex/common/tdx-cfg-block.c b/board/toradex/common/tdx-cfg-block.c new file mode 100644 index 0000000..0014ce8 --- /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" +); |