diff options
Diffstat (limited to 'host/arch/x86/lib/crossystem_arch.c')
| -rw-r--r-- | host/arch/x86/lib/crossystem_arch.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/host/arch/x86/lib/crossystem_arch.c b/host/arch/x86/lib/crossystem_arch.c index e6bd7e31..f3e631ad 100644 --- a/host/arch/x86/lib/crossystem_arch.c +++ b/host/arch/x86/lib/crossystem_arch.c @@ -83,6 +83,10 @@ #define GPIO_BASE_PATH "/sys/class/gpio" #define GPIO_EXPORT_PATH GPIO_BASE_PATH "/export" +/* Base for SMBIOS information files */ +#define SMBIOS_BASE_PATH "/sys/class/dmi/id" +#define SMBIOS_PRODUCT_VERSION_PATH SMBIOS_BASE_PATH "/product_version" + /* Filename for NVRAM file */ #define NVRAM_PATH "/dev/nvram" @@ -834,6 +838,25 @@ static int ReadGpio(unsigned signal_type) return (value == active_high ? 1 : 0); } +static int GetBoardId(void) +{ + /* + * Can't use vb2_read_file here, as it expects to be able to + * seek to the end of the file to tell the size, and the sysfs + * SMBIOS implementation will seek to offset 4096. + */ + int board_id = -1; + FILE *f = fopen(SMBIOS_PRODUCT_VERSION_PATH, "r"); + + if (!f) + return -1; + + if (fscanf(f, "rev%d\n", &board_id) != 1) + board_id = -1; + + fclose(f); + return board_id; +} int VbGetArchPropertyInt(const char* name) { @@ -897,6 +920,9 @@ int VbGetArchPropertyInt(const char* name) value = (int)fwupdate_value; } + if (!strcasecmp(name, "board_id")) + return GetBoardId(); + return value; } |