google/buddy: Add board as variant of google/auron

Add google/buddy (Acer Chromeboase 24) as a variant of google/auron,
with the following changes:

- add buddy-specific variant code
- add handling to auron for buddy's lan init, which no other variants have
- add handling to auron's mainboard ACPI due buddy having different PCIe
  port assigments than all other variants

Ported from Chromium branch firmware-buddy-6301.202.B, commit
ebb82ce [Buddy: Lock management engine + SPI descriptor]

Test: build/boot Linux on google/buddy using SeaBIOS and Tianocore payloads

Change-Id: Ib76eef47677b72ddaef81a2decef189a5f20c20a
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/28613
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

2 files changed, 48 insertions, 0 deletions

diff --git a/src/mainboard/google/auron/variants/buddy/spd/Makefile.inc b/src/mainboard/google/auron/variants/buddy/spd/Makefile.inc
new file mode 100644
index 0000000000..275d9836dd
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/spd/Makefile.inc
@@ -0,0 +1,16 @@
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2014 Google Inc.
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; version 2 of the License.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+
+romstage-y += spd.c
diff --git a/src/mainboard/google/auron/variants/buddy/spd/spd.c b/src/mainboard/google/auron/variants/buddy/spd/spd.c
new file mode 100644
index 0000000000..93e9fb2551
--- /dev/null
+++ b/src/mainboard/google/auron/variants/buddy/spd/spd.c
@@ -0,0 +1,32 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2014 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <soc/pei_data.h>
+#include <variant/spd.h>
+
+/* Copy SPD data for on-board memory */
+void mainboard_fill_spd_data(struct pei_data *pei_data)
+{
+	pei_data->spd_addresses[0] = 0xa0;
+	pei_data->spd_addresses[1] = 0x00;
+	pei_data->spd_addresses[2] = 0xa4;
+	pei_data->spd_addresses[3] = 0x00;
+	pei_data->dimm_channel0_disabled = 2;
+	pei_data->dimm_channel1_disabled = 2;
+	/* Enable 2x refresh mode */
+	pei_data->ddr_refresh_2x = 1;
+	pei_data->dq_pins_interleaved = 1;
+}