mb/starlabs/byte_adl: Add Alder Lake N Byte Mk II

Tested using `edk2` from
`github.com/starlabsltd/edk2/tree/uefipayload_vs`:
* Windows 11
* Ubuntu 22.04
* Manjaro 22

No known issues.

https://starlabs.systems/pages/byte-specification

Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: Idff2d883a8c29f0fee9d633708aac92061a45132
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80705
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/src/mainboard/starlabs/byte_adl/smbios.c b/src/mainboard/starlabs/byte_adl/smbios.c
new file mode 100644
index 0000000000..ab2c211a99
--- /dev/null
+++ b/src/mainboard/starlabs/byte_adl/smbios.c
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <chip.h>
+#include <device/device.h>
+#include <device/pci_def.h>
+#include <ec/starlabs/merlin/ec.h>
+#include <smbios.h>
+#include <types.h>
+#include <uuid.h>
+#include <variants.h>
+
+/* Get the Embedded Controller firmware version */
+void smbios_ec_revision(uint8_t *ec_major_revision, uint8_t *ec_minor_revision)
+{
+	u16 ec_version = ec_get_version();
+
+	*ec_major_revision = ec_version >> 8;
+	*ec_minor_revision = ec_version & 0xff;
+}
+
+const char *smbios_system_sku(void)
+{
+	return CONFIG_MAINBOARD_FAMILY;
+}
+
+u8 smbios_mainboard_feature_flags(void)
+{
+	return SMBIOS_FEATURE_FLAGS_HOSTING_BOARD | SMBIOS_FEATURE_FLAGS_REPLACEABLE;
+}
+
+const char *smbios_chassis_version(void)
+{
+	return smbios_mainboard_version();
+}
+
+const char *smbios_chassis_serial_number(void)
+{
+	return smbios_mainboard_serial_number();
+}