smbios: Provide serial number

If the system has a valid "serial#" environment variable set (which boards that
can find it out programatically set automatically), use that as input for the
serial number and UUID fields in the SMBIOS tables.

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/lib/smbios.c b/lib/smbios.c
index 237f5f05fd529ac870138c77f788467855604d5c..ce1974d86f76751bbc7966372692daebd47d381a 100644 (file)
--- a/lib/smbios.c
+++ b/lib/smbios.c
@@ -112,11 +112,16 @@ static int smbios_write_type1(uintptr_t *current, int handle)
 {
        struct smbios_type1 *t = (struct smbios_type1 *)*current;
        int len = sizeof(struct smbios_type1);
+       char *serial_str = getenv("serial#");
 
        memset(t, 0, sizeof(struct smbios_type1));
        fill_smbios_header(t, SMBIOS_SYSTEM_INFORMATION, len, handle);
        t->manufacturer = smbios_add_string(t->eos, CONFIG_SMBIOS_MANUFACTURER);
        t->product_name = smbios_add_string(t->eos, CONFIG_SMBIOS_PRODUCT_NAME);
+       if (serial_str) {
+               strncpy((char*)t->uuid, serial_str, sizeof(t->uuid));
+               t->serial_number = smbios_add_string(t->eos, serial_str);
+       }
 
        len = t->length + smbios_string_table_len(t->eos);
        *current += len;