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toradex: tdx-cfg-clock: add migration routine from PID8

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Add migration routine from PID8 pre-stored values on EEPROM
(including sane value checks).

Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
This commit is contained in:
Igor Opaniuk 2020-07-15 13:30:56 +03:00 committed by Stefano Babic
parent 0c6b5588ef
commit db4ab6d453
2 changed files with 80 additions and 0 deletions
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78
board/toradex/common/tdx-cfg-block.c
View File

@ -649,6 +649,84 @@ out:
return ret;
}
int check_pid8_sanity(char *pid8)
{
char s_carrierid_verdin_dev[5];
char s_carrierid_dahlia[5];
sprintf(s_carrierid_verdin_dev, "0%d", VERDIN_DEVELOPMENT_BOARD);
sprintf(s_carrierid_dahlia, "0%d", DAHLIA);
/* sane value check, first 4 chars which represent carrier id */
if (!strncmp(pid8, s_carrierid_verdin_dev, 4))
return 0;
if (!strncmp(pid8, s_carrierid_dahlia, 4))
return 0;
return -EINVAL;
}
int try_migrate_tdx_cfg_block_carrier(void)
{
char pid8[8];
int offset = 0;
int ret = CMD_RET_SUCCESS;
size_t size = TDX_CFG_BLOCK_EXTRA_MAX_SIZE;
u8 *config_block;
memset(pid8, 0x0, 8);
ret = read_tdx_eeprom_data(TDX_EEPROM_ID_CARRIER, 0x0, (u8 *)pid8, 8);
if (ret)
return ret;
if (check_pid8_sanity(pid8))
return -EINVAL;
/* 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);
/* we try parse PID8 concatenating zeroed serial number */
tdx_car_hw_tag.ver_major = pid8[4] - '0';
tdx_car_hw_tag.ver_minor = pid8[5] - '0';
tdx_car_hw_tag.ver_assembly = pid8[7] - '0';
pid8[4] = '\0';
tdx_car_hw_tag.prodid = simple_strtoul(pid8, NULL, 10);
/* 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);
ret = write_tdx_eeprom_data(TDX_EEPROM_ID_CARRIER, 0x0, config_block,
size);
if (ret) {
printf("Failed to write Toradex Extra config block: %d\n",
ret);
ret = CMD_RET_FAILURE;
goto out;
}
printf("Successfully migrated to Toradex Config Block from PID8\n");
out:
free(config_block);
return ret;
}
static int get_cfgblock_carrier_interactive(void)
{
char message[CONFIG_SYS_CBSIZE];

2
board/toradex/common/tdx-cfg-block.h
View File

@ -102,4 +102,6 @@ extern u32 tdx_car_serial;
int read_tdx_cfg_block(void);
int read_tdx_cfg_block_carrier(void);
int try_migrate_tdx_cfg_block_carrier(void);
#endif /* _TDX_CFG_BLOCK_H */