Extend smbios api to allow runtime change of mainboard serial and version

This patch extends the current smbios api to allow changing mainboard
serial and version during coreboot runtime. This is helpful if you
have an EEPROM etc. to access these informations and want to add
some quirks for broken hardware revision for the linux kernel.
This could be done via DMI_MATCH marco.

Change-Id: I1924a56073084e965a23e47873d9f8542070423c
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-on: http://review.coreboot.org/1232
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

1 files changed, 12 insertions, 2 deletions

diff --git a/src/arch/x86/boot/smbios.c b/src/arch/x86/boot/smbios.c
index 9c61e28dcc..8877f60ea3 100644
--- a/src/arch/x86/boot/smbios.c
+++ b/src/arch/x86/boot/smbios.c
@@ -163,6 +163,16 @@ static int smbios_write_type0(unsigned long *current, int handle)
 	return len;
 }
 
+const char *__attribute__((weak)) smbios_mainboard_serial_number(void)
+{
+	return CONFIG_MAINBOARD_SERIAL_NUMBER;
+}
+
+const char *__attribute__((weak)) smbios_mainboard_version(void)
+{
+	return CONFIG_MAINBOARD_VERSION;
+}
+
 static int smbios_write_type1(unsigned long *current, int handle)
 {
 	struct smbios_type1 *t = (struct smbios_type1 *)*current;
@@ -174,8 +184,8 @@ static int smbios_write_type1(unsigned long *current, int handle)
 	t->length = len - 2;
 	t->manufacturer = smbios_add_string(t->eos, CONFIG_MAINBOARD_VENDOR);
 	t->product_name = smbios_add_string(t->eos, CONFIG_MAINBOARD_PART_NUMBER);
-	t->serial_number = smbios_add_string(t->eos, CONFIG_MAINBOARD_SERIAL_NUMBER);
-	t->version = smbios_add_string(t->eos, CONFIG_MAINBOARD_VERSION);
+	t->serial_number = smbios_add_string(t->eos, smbios_mainboard_serial_number());
+	t->version = smbios_add_string(t->eos, smbios_mainboard_version());
 	len = t->length + smbios_string_table_len(t->eos);
 	*current += len;
 	return len;