From: Igor Opaniuk igor.opaniuk@toradex.com
This introduces support for EEPROM as a storage for the main Toradex config block and additional config blocks on extra EEPROM chips (on carrier board or video adapters).
To enable EEPROM as a storage for the main config block: TDX_HAVE_EEPROM=y.
For additional EEPROMs please enable this Kconfig symbol: TDX_CFG_BLOCK_EXTRA=y.
Information about existing EEPROM chips is provided via Device Tree using aliases.
You can also write configuration for the carrier board using create_carrier subcommand for cfgblock. Example:
Verdin iMX8MM # cfgblock create_carrier Supported carrier boards: UNKNOWN CARRIER = [0] Verdin Carrier Board = [1] Choose your carrier board (provide ID): 1 Enter carrier board version (e.g. V1.1B): V1.0A Enter carrier board serial number: 10622780
Also with barcode: Verdin iMX8MM # cfgblock create carrier -y 0156100010622780
Signed-off-by: Igor Opaniuk igor.opaniuk@toradex.com ---
board/toradex/common/Kconfig | 18 ++ board/toradex/common/tdx-cfg-block.c | 312 ++++++++++++++++++++++++++++++----- board/toradex/common/tdx-cfg-block.h | 3 + 3 files changed, 294 insertions(+), 39 deletions(-)
diff --git a/board/toradex/common/Kconfig b/board/toradex/common/Kconfig index 11f4aab..36068d2 100644 --- a/board/toradex/common/Kconfig +++ b/board/toradex/common/Kconfig @@ -20,6 +20,12 @@ config TDX_HAVE_NAND config TDX_HAVE_NOR bool
+config TDX_HAVE_EEPROM + bool + +config TDX_HAVE_EEPROM_EXTRA + bool + if TDX_CFG_BLOCK
config TDX_CFG_BLOCK_IS_IN_MMC @@ -37,6 +43,11 @@ config TDX_CFG_BLOCK_IS_IN_NOR depends on TDX_HAVE_NOR default y
+config TDX_CFG_BLOCK_IS_IN_EEPROM + bool + depends on TDX_HAVE_EEPROM + default y + config TDX_CFG_BLOCK_DEV int "Toradex config block eMMC device ID" depends on TDX_CFG_BLOCK_IS_IN_MMC @@ -66,4 +77,11 @@ config TDX_CFG_BLOCK_2ND_ETHADDR Ethernet carrier boards. This options enables the code to set the second Ethernet address as environment variable (eth1addr).
+config TDX_CFG_BLOCK_EXTRA + bool "Support for additional EEPROMs (carrier board, display adapter)" + depends on TDX_HAVE_EEPROM_EXTRA + help + Enables fetching auxilary config blocks from carrier board/display + adapter EEPROMs. + endif diff --git a/board/toradex/common/tdx-cfg-block.c b/board/toradex/common/tdx-cfg-block.c index 48d2d0f..9699a50 100644 --- a/board/toradex/common/tdx-cfg-block.c +++ b/board/toradex/common/tdx-cfg-block.c @@ -5,6 +5,8 @@
#include <common.h> #include "tdx-cfg-block.h" +#include "tdx-eeprom.h" + #include <command.h> #include <asm/cache.h>
@@ -37,21 +39,31 @@ DECLARE_GLOBAL_DATA_PTR;
#define TAG_VALID 0xcf01 #define TAG_MAC 0x0000 +#define TAG_CAR_SERIAL 0x0021 #define TAG_HW 0x0008 #define TAG_INVALID 0xffff
#define TAG_FLAG_VALID 0x1
+#define TDX_EEPROM_ID_MODULE 0 +#define TDX_EEPROM_ID_CARRIER 1 + #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 +#elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_EEPROM) +#define TDX_CFG_BLOCK_MAX_SIZE 64 #else #error Toradex config block location not set #endif
+#ifdef CONFIG_TDX_CFG_BLOCK_EXTRA +#define TDX_CFG_BLOCK_EXTRA_MAX_SIZE 64 +#endif + struct toradex_tag { u32 len:14; u32 flags:2; @@ -62,6 +74,11 @@ bool valid_cfgblock; struct toradex_hw tdx_hw_tag; struct toradex_eth_addr tdx_eth_addr; u32 tdx_serial; +#ifdef CONFIG_TDX_CFG_BLOCK_EXTRA +u32 tdx_car_serial; +bool valid_cfgblock_carrier; +struct toradex_hw tdx_car_hw_tag; +#endif
const char * const toradex_modules[] = { [0] = "UNKNOWN MODULE", @@ -236,6 +253,20 @@ static int write_tdx_cfg_block_to_nor(unsigned char *config_block) } #endif
+#ifdef CONFIG_TDX_CFG_BLOCK_IS_IN_EEPROM +static int read_tdx_cfg_block_from_eeprom(unsigned char *config_block) +{ + return read_tdx_eeprom_data(TDX_EEPROM_ID_MODULE, 0x0, config_block, + TDX_CFG_BLOCK_MAX_SIZE); +} + +static int write_tdx_cfg_block_to_eeprom(unsigned char *config_block) +{ + return write_tdx_eeprom_data(TDX_EEPROM_ID_MODULE, 0x0, config_block, + TDX_CFG_BLOCK_MAX_SIZE); +} +#endif + int read_tdx_cfg_block(void) { int ret = 0; @@ -259,6 +290,8 @@ int read_tdx_cfg_block(void) 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); +#elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_EEPROM) + ret = read_tdx_cfg_block_from_eeprom(config_block); #else ret = -EINVAL; #endif @@ -275,7 +308,12 @@ int read_tdx_cfg_block(void) valid_cfgblock = true; offset = 4;
- while (offset < TDX_CFG_BLOCK_MAX_SIZE) { + /* + * check if there is enough space for storing tag and value of the + * biggest element + */ + while (offset + sizeof(struct toradex_tag) + + sizeof(struct toradex_hw) < TDX_CFG_BLOCK_MAX_SIZE) { tag = (struct toradex_tag *)(config_block + offset); offset += 4; if (tag->id == TAG_INVALID) @@ -334,7 +372,6 @@ static int get_cfgblock_interactive(void) it = 'y'; #endif
- #if defined(CONFIG_TARGET_APALIS_IMX8) || \ defined(CONFIG_TARGET_APALIS_IMX8X) || \ defined(CONFIG_TARGET_COLIBRI_IMX6ULL) || \ @@ -505,7 +542,8 @@ static int get_cfgblock_interactive(void) return 0; }
-static int get_cfgblock_barcode(char *barcode) +static int get_cfgblock_barcode(char *barcode, struct toradex_hw *tag, + u32 *serial) { if (strlen(barcode) < 16) { printf("Argument too short, barcode is 16 chars long\n"); @@ -513,31 +551,154 @@ static int get_cfgblock_barcode(char *barcode) }
/* 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'; + tag->ver_major = barcode[4] - '0'; + tag->ver_minor = barcode[5] - '0'; + tag->ver_assembly = barcode[7] - '0';
barcode[4] = '\0'; - tdx_hw_tag.prodid = simple_strtoul(barcode, NULL, 10); + tag->prodid = simple_strtoul(barcode, NULL, 10);
/* Parse second part of the barcode (serial number */ barcode += 8; - tdx_serial = simple_strtoul(barcode, NULL, 10); + *serial = simple_strtoul(barcode, NULL, 10);
return 0; }
-static int do_cfgblock_create(struct cmd_tbl *cmdtp, int flag, int argc, - char *const argv[]) +static int write_tag(u8 *config_block, int *offset, int tag_id, + u8 *tag_data, size_t tag_data_size) { - u8 *config_block; struct toradex_tag *tag; - size_t size = TDX_CFG_BLOCK_MAX_SIZE; + + if (!offset || !config_block) + return -EINVAL; + + tag = (struct toradex_tag *)(config_block + *offset); + tag->id = tag_id; + tag->flags = TAG_FLAG_VALID; + /* len is provided as number of 32bit values after the tag */ + tag->len = (tag_data_size + sizeof(u32) - 1) / sizeof(u32); + *offset += sizeof(struct toradex_tag); + if (tag_data && tag_data_size) { + memcpy(config_block + *offset, tag_data, + tag_data_size); + *offset += tag_data_size; + } + + return 0; +} + +#ifdef CONFIG_TDX_CFG_BLOCK_EXTRA +int read_tdx_cfg_block_carrier(void) +{ + int ret = 0; + u8 *config_block = NULL; + struct toradex_tag *tag; + size_t size = TDX_CFG_BLOCK_EXTRA_MAX_SIZE; + int offset; + + /* Allocate RAM area for carrier 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); + + ret = read_tdx_eeprom_data(TDX_EEPROM_ID_CARRIER, 0x0, config_block, + size); + if (ret) + return ret; + + /* Expect a valid tag first */ + tag = (struct toradex_tag *)config_block; + if (tag->flags != TAG_FLAG_VALID || tag->id != TAG_VALID) { + valid_cfgblock_carrier = false; + ret = -EINVAL; + goto out; + } + valid_cfgblock_carrier = true; + offset = 4; + + while (offset + sizeof(struct toradex_tag) + + sizeof(struct toradex_hw) < 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_CAR_SERIAL: + memcpy(&tdx_car_serial, config_block + offset, + sizeof(tdx_car_serial)); + break; + case TAG_HW: + memcpy(&tdx_car_hw_tag, config_block + + offset, 8); + break; + } + } + + /* Get to next tag according to current tags length */ + offset += tag->len * 4; + } +out: + free(config_block); + return ret; +} + +static int get_cfgblock_carrier_interactive(void) +{ + char message[CONFIG_SYS_CBSIZE]; + int len; + + printf("Supported carrier boards:\n"); + printf("CARRIER BOARD NAME\t\t [ID]\n"); + for (int i = 0; i < sizeof(toradex_carrier_boards) / + sizeof(toradex_carrier_boards[0]); i++) + if (toradex_carrier_boards[i]) + printf("%s \t\t [%d]\n", toradex_carrier_boards[i], i); + + sprintf(message, "Choose your carrier board (provide ID): "); + len = cli_readline(message); + tdx_car_hw_tag.prodid = simple_strtoul(console_buffer, NULL, 10); + + do { + sprintf(message, "Enter carrier board version (e.g. V1.1B): V"); + len = cli_readline(message); + } while (len < 4); + + tdx_car_hw_tag.ver_major = console_buffer[0] - '0'; + tdx_car_hw_tag.ver_minor = console_buffer[2] - '0'; + tdx_car_hw_tag.ver_assembly = console_buffer[3] - 'A'; + + while (len < 8) { + sprintf(message, "Enter carrier board serial number: "); + len = cli_readline(message); + } + + tdx_car_serial = simple_strtoul(console_buffer, NULL, 10); + + return 0; +} + +static int do_cfgblock_carrier_create(struct cmd_tbl *cmdtp, int flag, int argc, + char * const argv[]) +{ + u8 *config_block; + size_t size = TDX_CFG_BLOCK_EXTRA_MAX_SIZE; int offset = 0; int ret = CMD_RET_SUCCESS; int err; int force_overwrite = 0;
+ if (argc >= 3) { + if (argv[2][0] == '-' && argv[2][1] == 'y') + force_overwrite = 1; + } + /* Allocate RAM area for config block */ config_block = memalign(ARCH_DMA_MINALIGN, size); if (!config_block) { @@ -546,12 +707,95 @@ static int do_cfgblock_create(struct cmd_tbl *cmdtp, int flag, int argc, }
memset(config_block, 0xff, size); + read_tdx_cfg_block_carrier(); + if (valid_cfgblock_carrier && !force_overwrite) { + char message[CONFIG_SYS_CBSIZE]; + + sprintf(message, "A valid Toradex Carrier 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; + } + + if (argc < 3 || (force_overwrite && argc < 4)) { + err = get_cfgblock_carrier_interactive(); + } else { + if (force_overwrite) + err = get_cfgblock_barcode(argv[3], &tdx_car_hw_tag, + &tdx_car_serial); + else + err = get_cfgblock_barcode(argv[2], &tdx_car_hw_tag, + &tdx_car_serial); + } + + if (err) { + ret = CMD_RET_FAILURE; + goto out; + } + + /* Valid Tag */ + write_tag(config_block, &offset, TAG_VALID, NULL, 0); + + /* Product Tag */ + write_tag(config_block, &offset, TAG_HW, (u8 *)&tdx_car_hw_tag, + sizeof(tdx_car_hw_tag)); + + /* Serial Tag */ + write_tag(config_block, &offset, TAG_CAR_SERIAL, (u8 *)&tdx_car_serial, + sizeof(tdx_car_serial)); + + memset(config_block + offset, 0, 32 - offset); + err = write_tdx_eeprom_data(TDX_EEPROM_ID_CARRIER, 0x0, config_block, + size); + if (err) { + printf("Failed to write Toradex Extra config block: %d\n", + ret); + ret = CMD_RET_FAILURE; + goto out; + } + + printf("Toradex Extra config block successfully written\n"); + +out: + free(config_block); + return ret; +} + +#endif /* CONFIG_TDX_CFG_BLOCK_EXTRA */ + +static int do_cfgblock_create(struct cmd_tbl *cmdtp, int flag, int argc, + char * const argv[]) +{ + u8 *config_block; + size_t size = TDX_CFG_BLOCK_MAX_SIZE; + int offset = 0; + int ret = CMD_RET_SUCCESS; + int err; + int force_overwrite = 0;
if (argc >= 3) { +#ifdef CONFIG_TDX_CFG_BLOCK_EXTRA + if (!strcmp(argv[2], "carrier")) + return do_cfgblock_carrier_create(cmdtp, flag, + --argc, ++argv); +#endif /* CONFIG_TDX_CFG_BLOCK_EXTRA */ if (argv[2][0] == '-' && argv[2][1] == 'y') force_overwrite = 1; }
+ /* 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) @@ -593,9 +837,11 @@ static int do_cfgblock_create(struct cmd_tbl *cmdtp, int flag, int argc, err = get_cfgblock_interactive(); } else { if (force_overwrite) - err = get_cfgblock_barcode(argv[3]); + err = get_cfgblock_barcode(argv[3], &tdx_hw_tag, + &tdx_serial); else - err = get_cfgblock_barcode(argv[2]); + err = get_cfgblock_barcode(argv[2], &tdx_hw_tag, + &tdx_serial); } if (err) { ret = CMD_RET_FAILURE; @@ -607,39 +853,25 @@ static int do_cfgblock_create(struct cmd_tbl *cmdtp, int flag, int argc, 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; + write_tag(config_block, &offset, TAG_VALID, NULL, 0);
/* 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; + write_tag(config_block, &offset, TAG_HW, (u8 *)&tdx_hw_tag, + sizeof(tdx_hw_tag));
/* MAC Tag */ - tag = (struct toradex_tag *)(config_block + offset); - tag->id = TAG_MAC; - tag->flags = TAG_FLAG_VALID; - tag->len = 2; - offset += 4; + write_tag(config_block, &offset, TAG_MAC, (u8 *)&tdx_eth_addr, + sizeof(tdx_eth_addr));
- 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); +#elif defined(CONFIG_TDX_CFG_BLOCK_IS_IN_EEPROM) + err = write_tdx_cfg_block_to_eeprom(config_block); #else err = -EINVAL; #endif @@ -679,8 +911,10 @@ static int do_cfgblock(struct cmd_tbl *cmdtp, int flag, int argc, return CMD_RET_USAGE; }
-U_BOOT_CMD(cfgblock, 4, 0, do_cfgblock, - "Toradex config block handling commands", - "create [-y] [barcode] - (Re-)create Toradex config block\n" - "cfgblock reload - Reload Toradex config block from flash" +U_BOOT_CMD( + cfgblock, 5, 0, do_cfgblock, + "Toradex config block handling commands", + "create [-y] [barcode] - (Re-)create Toradex config block\n" + "create carrier [-y] [barcode] - (Re-)create Toradex Carrier 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 index d58be23..e18da33 100644 --- a/board/toradex/common/tdx-cfg-block.h +++ b/board/toradex/common/tdx-cfg-block.h @@ -94,9 +94,12 @@ extern const char * const toradex_modules[]; extern const char * const toradex_carrier_boards[]; extern bool valid_cfgblock; extern struct toradex_hw tdx_hw_tag; +extern struct toradex_hw tdx_car_hw_tag; extern struct toradex_eth_addr tdx_eth_addr; extern u32 tdx_serial; +extern u32 tdx_car_serial;
int read_tdx_cfg_block(void); +int read_tdx_cfg_block_carrier(void);
#endif /* _TDX_CFG_BLOCK_H */