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toradex: tdx-cfg-block: add support for EEPROM

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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>
This commit is contained in:
Igor Opaniuk 2020-07-15 13:30:55 +03:00 committed by Stefano Babic
parent 26921f5853
commit 0c6b5588ef
3 changed files with 294 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
board/toradex/common/Kconfig
View File

@ -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

312
board/toradex/common/tdx-cfg-block.c
View File

@ -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)
{
struct toradex_tag *tag;
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;
struct toradex_tag *tag;
size_t size = TDX_CFG_BLOCK_MAX_SIZE;
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"
);

3
board/toradex/common/tdx-cfg-block.h
View File

@ -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 */