smbios: Add generic type41 write function

Mainboards were defining their own SMBIOS type41
write function.  Instead pull this into the generic
SMBIOS code and change the existing mainboards to
make use of it.

Change-Id: I3c8a95ca51fe2a3118dc8d1154011ccfed5fbcbc
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/56619
Reviewed-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/4187
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

src/arch/x86/boot/smbios.c

@@ -303,6 +303,32 @@ static int smbios_write_type32(unsigned long *current, int handle)
 	return len;
 }
 
+int smbios_write_type41(unsigned long *current, int *handle,
+			const char *name, u8 instance, u16 segment,
+			u8 bus, u8 device, u8 function)
+{
+	struct smbios_type41 *t = (struct smbios_type41 *)*current;
+	int len = sizeof(struct smbios_type41);
+
+	memset(t, 0, sizeof(struct smbios_type41));
+	t->type = SMBIOS_ONBOARD_DEVICES_EXTENDED_INFORMATION;
+	t->handle = *handle;
+	t->length = len - 2;
+	t->reference_designation = smbios_add_string(t->eos, name);
+	t->device_type = SMBIOS_DEVICE_TYPE_OTHER;
+	t->device_status = 1;
+	t->device_type_instance = instance;
+	t->segment_group_number = segment;
+	t->bus_number = bus;
+	t->device_number = device;
+	t->function_number = function;
+
+	len = t->length + smbios_string_table_len(t->eos);
+	*current += len;
+	*handle += 1;
+	return len;
+}
+
 static int smbios_write_type127(unsigned long *current, int handle)
 {
 	struct smbios_type127 *t = (struct smbios_type127 *)*current;