From fe8b788a12b225ae45ecb26625cfd2588d193ff3 Mon Sep 17 00:00:00 2001
From: Duncan Laurie <dlaurie@chromium.org>
Date: Thu, 22 May 2014 08:22:51 -0700
Subject: samus: Move SPD related information to spd directory

Put all the SPD related information in one place including
the onboard SPD sources and the board specific parsing.

BUG=chrome-os-partner:28234
TEST=Build and boot on samus

Original-Change-Id: If5cd826ecc9cc856008b7c29aa3cfade5ae7f685
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/201082
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit f40e447cee84ebd04ab8a57250d0f56f508d52f2)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I9c10b08c3e640642e3c75696a233051bb34a2123
Reviewed-on: http://review.coreboot.org/8006
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
---
 src/mainboard/google/samus/Makefile.inc            |  31 +-----
 src/mainboard/google/samus/elpida_4Gb.spd.hex      |  16 ---
 src/mainboard/google/samus/elpida_8Gb.spd.hex      |  16 ---
 src/mainboard/google/samus/empty.spd.hex           |  16 ---
 src/mainboard/google/samus/romstage.c              |   2 +-
 src/mainboard/google/samus/samsung_4Gb.spd.hex     |  16 ---
 src/mainboard/google/samus/samsung_8Gb.spd.hex     |  16 ---
 src/mainboard/google/samus/spd.c                   | 121 ---------------------
 src/mainboard/google/samus/spd.h                   |  43 --------
 src/mainboard/google/samus/spd/Makefile.inc        |  46 ++++++++
 src/mainboard/google/samus/spd/elpida_4Gb.spd.hex  |  16 +++
 src/mainboard/google/samus/spd/elpida_8Gb.spd.hex  |  16 +++
 src/mainboard/google/samus/spd/empty.spd.hex       |  16 +++
 src/mainboard/google/samus/spd/samsung_4Gb.spd.hex |  16 +++
 src/mainboard/google/samus/spd/samsung_8Gb.spd.hex |  16 +++
 src/mainboard/google/samus/spd/spd.c               | 121 +++++++++++++++++++++
 src/mainboard/google/samus/spd/spd.h               |  43 ++++++++
 17 files changed, 293 insertions(+), 274 deletions(-)
 delete mode 100644 src/mainboard/google/samus/elpida_4Gb.spd.hex
 delete mode 100644 src/mainboard/google/samus/elpida_8Gb.spd.hex
 delete mode 100644 src/mainboard/google/samus/empty.spd.hex
 delete mode 100644 src/mainboard/google/samus/samsung_4Gb.spd.hex
 delete mode 100644 src/mainboard/google/samus/samsung_8Gb.spd.hex
 delete mode 100644 src/mainboard/google/samus/spd.c
 delete mode 100644 src/mainboard/google/samus/spd.h
 create mode 100644 src/mainboard/google/samus/spd/Makefile.inc
 create mode 100644 src/mainboard/google/samus/spd/elpida_4Gb.spd.hex
 create mode 100644 src/mainboard/google/samus/spd/elpida_8Gb.spd.hex
 create mode 100644 src/mainboard/google/samus/spd/empty.spd.hex
 create mode 100644 src/mainboard/google/samus/spd/samsung_4Gb.spd.hex
 create mode 100644 src/mainboard/google/samus/spd/samsung_8Gb.spd.hex
 create mode 100644 src/mainboard/google/samus/spd/spd.c
 create mode 100644 src/mainboard/google/samus/spd/spd.h

diff --git a/src/mainboard/google/samus/Makefile.inc b/src/mainboard/google/samus/Makefile.inc
index f23352f471..502204e990 100644
--- a/src/mainboard/google/samus/Makefile.inc
+++ b/src/mainboard/google/samus/Makefile.inc
@@ -17,6 +17,8 @@
 ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 ##
 
+subdirs-y += spd
+
 ramstage-$(CONFIG_EC_GOOGLE_CHROMEEC) += ec.c
 
 romstage-y += chromeos.c
@@ -26,32 +28,3 @@ smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c
 
 romstage-y += pei_data.c
 ramstage-y += pei_data.c
-
-## DIMM SPD for on-board memory
-romstage-y += spd.c
-SPD_BIN = $(obj)/spd.bin
-
-# Order of names in SPD_SOURCES is important!
-# { GPIO69, GPIO68, GPIO67 }
-SPD_SOURCES  = empty            # 0: { 0, 0, 0 }
-SPD_SOURCES += elpida_4Gb       # 1: { 0, 0, 1 }
-SPD_SOURCES += empty            # 2: { 0, 1, 0 }
-SPD_SOURCES += elpida_8Gb       # 3: { 0, 1, 1 }
-SPD_SOURCES += empty            # 4: { 1, 0, 0 }
-SPD_SOURCES += samsung_8Gb      # 5: { 1, 0, 1 }
-SPD_SOURCES += samsung_4Gb      # 6: { 1, 1, 0 }
-SPD_SOURCES += empty            # 7: { 1, 1, 1 }
-
-SPD_DEPS := $(foreach f, $(SPD_SOURCES), src/mainboard/$(MAINBOARDDIR)/$(f).spd.hex)
-
-# Include spd rom data
-$(SPD_BIN): $(SPD_DEPS)
-	for f in $+; \
-	  do for c in $$(cat $$f | grep -v ^#); \
-	    do echo -e -n "\\x$$c"; \
-	  done; \
-	done > $@
-
-cbfs-files-y += spd.bin
-spd.bin-file := $(SPD_BIN)
-spd.bin-type := 0xab
diff --git a/src/mainboard/google/samus/elpida_4Gb.spd.hex b/src/mainboard/google/samus/elpida_4Gb.spd.hex
deleted file mode 100644
index e73ba6201c..0000000000
--- a/src/mainboard/google/samus/elpida_4Gb.spd.hex
+++ /dev/null
@@ -1,16 +0,0 @@
-92 11 F1 03 04 11 02 0B 03 11 01 08 0A 00 FE 00
-69 78 69 3C 69 11 18 81 20 08 3C 3C 01 40 83 05
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 0F 01 02 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 02 FE 00 00 00 00 00 00 00 00 00
-45 44 46 38 31 33 32 41 33 4D 41 2D 47 44 2D 46
-20 20 32 2E 30 20 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/google/samus/elpida_8Gb.spd.hex b/src/mainboard/google/samus/elpida_8Gb.spd.hex
deleted file mode 100644
index b790943fdc..0000000000
--- a/src/mainboard/google/samus/elpida_8Gb.spd.hex
+++ /dev/null
@@ -1,16 +0,0 @@
-92 11 F1 03 04 12 02 0A 03 11 01 08 0A 00 FE 00
-69 78 69 3C 69 11 18 81 20 08 3C 3C 01 40 83 05
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 0F 01 02 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 02 FE 00 00 00 00 00 00 00 00 00
-45 44 46 41 32 33 32 41 32 4D 41 2D 47 44 2D 46
-20 20 32 2E 30 20 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/google/samus/empty.spd.hex b/src/mainboard/google/samus/empty.spd.hex
deleted file mode 100644
index 9ec39f1ba4..0000000000
--- a/src/mainboard/google/samus/empty.spd.hex
+++ /dev/null
@@ -1,16 +0,0 @@
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/google/samus/romstage.c b/src/mainboard/google/samus/romstage.c
index f0609c84a7..9af4ffbc5c 100644
--- a/src/mainboard/google/samus/romstage.c
+++ b/src/mainboard/google/samus/romstage.c
@@ -26,7 +26,7 @@
 #include <broadwell/pei_data.h>
 #include <broadwell/pei_wrapper.h>
 #include <broadwell/romstage.h>
-#include "spd.h"
+#include <mainboard/google/samus/spd/spd.h>
 #include "gpio.h"
 
 void mainboard_romstage_entry(struct romstage_params *rp)
diff --git a/src/mainboard/google/samus/samsung_4Gb.spd.hex b/src/mainboard/google/samus/samsung_4Gb.spd.hex
deleted file mode 100644
index 882105097a..0000000000
--- a/src/mainboard/google/samus/samsung_4Gb.spd.hex
+++ /dev/null
@@ -1,16 +0,0 @@
-92 11 F1 03 04 11 02 0B 03 11 01 08 0A 00 FE 00
-69 78 69 3C 69 11 18 81 F0 0A 3C 3C 01 40 83 01
-00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 0F 11 02 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 80 CE 01 00 00 00 00 00 00 00 00
-4B 34 45 38 45 33 30 34 45 44 2D 45 47 43 45 20
-20 20 00 00 80 CE 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/google/samus/samsung_8Gb.spd.hex b/src/mainboard/google/samus/samsung_8Gb.spd.hex
deleted file mode 100644
index a7a14093e7..0000000000
--- a/src/mainboard/google/samus/samsung_8Gb.spd.hex
+++ /dev/null
@@ -1,16 +0,0 @@
-92 11 F1 03 04 12 02 0A 03 11 01 08 0A 00 FE 00
-69 78 69 3C 69 11 18 81 F0 0A 3C 3C 01 40 83 01
-00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 0F 11 02 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 80 CE 01 00 00 00 00 00 00 00 00
-4B 34 45 36 45 33 30 34 45 44 2D 45 47 43 45 20
-20 20 00 00 80 CE 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/google/samus/spd.c b/src/mainboard/google/samus/spd.c
deleted file mode 100644
index 4371da9bd8..0000000000
--- a/src/mainboard/google/samus/spd.c
+++ /dev/null
@@ -1,121 +0,0 @@
-/*
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <arch/byteorder.h>
-#include <cbfs.h>
-#include <console/console.h>
-#include <string.h>
-#include <broadwell/gpio.h>
-#include <broadwell/pei_data.h>
-#include <broadwell/romstage.h>
-#include "gpio.h"
-#include "spd.h"
-
-static void mainboard_print_spd_info(uint8_t spd[])
-{
-	const int spd_banks[8] = {  8, 16, 32, 64, -1, -1, -1, -1 };
-	const int spd_capmb[8] = {  1,  2,  4,  8, 16, 32, 64,  0 };
-	const int spd_rows[8]  = { 12, 13, 14, 15, 16, -1, -1, -1 };
-	const int spd_cols[8]  = {  9, 10, 11, 12, -1, -1, -1, -1 };
-	const int spd_ranks[8] = {  1,  2,  3,  4, -1, -1, -1, -1 };
-	const int spd_devw[8]  = {  4,  8, 16, 32, -1, -1, -1, -1 };
-	const int spd_busw[8]  = {  8, 16, 32, 64, -1, -1, -1, -1 };
-	char spd_name[SPD_PART_LEN+1] = { 0 };
-
-	int banks = spd_banks[(spd[SPD_DENSITY_BANKS] >> 4) & 7];
-	int capmb = spd_capmb[spd[SPD_DENSITY_BANKS] & 7] * 256;
-	int rows  = spd_rows[(spd[SPD_ADDRESSING] >> 3) & 7];
-	int cols  = spd_cols[spd[SPD_ADDRESSING] & 7];
-	int ranks = spd_ranks[(spd[SPD_ORGANIZATION] >> 3) & 7];
-	int devw  = spd_devw[spd[SPD_ORGANIZATION] & 7];
-	int busw  = spd_busw[spd[SPD_BUS_DEV_WIDTH] & 7];
-
-	/* Module type */
-	printk(BIOS_INFO, "SPD: module type is ");
-	switch (spd[SPD_DRAM_TYPE]) {
-	case SPD_DRAM_DDR3:
-		printk(BIOS_INFO, "DDR3\n");
-		break;
-	case SPD_DRAM_LPDDR3:
-		printk(BIOS_INFO, "LPDDR3\n");
-		break;
-	default:
-		printk(BIOS_INFO, "Unknown (%02x)\n", spd[SPD_DRAM_TYPE]);
-		break;
-	}
-
-	/* Module Part Number */
-	memcpy(spd_name, &spd[SPD_PART_OFF], SPD_PART_LEN);
-	spd_name[SPD_PART_LEN] = 0;
-	printk(BIOS_INFO, "SPD: module part is %s\n", spd_name);
-
-	printk(BIOS_INFO, "SPD: banks %d, ranks %d, rows %d, columns %d, "
-	       "density %d Mb\n", banks, ranks, rows, cols, capmb);
-	printk(BIOS_INFO, "SPD: device width %d bits, bus width %d bits\n",
-	       devw, busw);
-
-	if (capmb > 0 && busw > 0 && devw > 0 && ranks > 0) {
-		/* SIZE = DENSITY / 8 * BUS_WIDTH / SDRAM_WIDTH * RANKS */
-		printk(BIOS_INFO, "SPD: module size is %u MB (per channel)\n",
-		       capmb / 8 * busw / devw * ranks);
-	}
-}
-
-/* Copy SPD data for on-board memory */
-void mainboard_fill_spd_data(struct pei_data *pei_data)
-{
-	int spd_gpio[3];
-	int spd_index;
-	int spd_file_len;
-	struct cbfs_file *spd_file;
-
-	spd_gpio[0] = get_gpio(SPD_GPIO_BIT0);
-	spd_gpio[1] = get_gpio(SPD_GPIO_BIT1);
-	spd_gpio[2] = get_gpio(SPD_GPIO_BIT2);
-
-	spd_index = spd_gpio[2] << 2 | spd_gpio[1] << 1 | spd_gpio[0];
-
-	printk(BIOS_DEBUG, "SPD: index %d (GPIO%d=%d GPIO%d=%d GPIO%d=%d)\n",
-	       spd_index,
-	       SPD_GPIO_BIT2, spd_gpio[2],
-	       SPD_GPIO_BIT1, spd_gpio[1],
-	       SPD_GPIO_BIT0, spd_gpio[0]);
-
-	spd_file = cbfs_get_file(CBFS_DEFAULT_MEDIA, "spd.bin");
-	if (!spd_file)
-		die("SPD data not found.");
-	spd_file_len = ntohl(spd_file->len);
-
-	if (spd_file_len < ((spd_index + 1) * SPD_LEN)) {
-		printk(BIOS_ERR, "SPD index override to 0 - old hardware?\n");
-		spd_index = 0;
-	}
-
-	if (spd_file_len < SPD_LEN)
-		die("Missing SPD data.");
-
-	/* Assume same memory in both channels */
-	spd_index *= SPD_LEN;
-	memcpy(pei_data->spd_data[0][0],
-	       ((char*)CBFS_SUBHEADER(spd_file)) + spd_index, SPD_LEN);
-	memcpy(pei_data->spd_data[1][0],
-	       ((char*)CBFS_SUBHEADER(spd_file)) + spd_index, SPD_LEN);
-
-	mainboard_print_spd_info(pei_data->spd_data[0][0]);
-}
diff --git a/src/mainboard/google/samus/spd.h b/src/mainboard/google/samus/spd.h
deleted file mode 100644
index 98180fa72c..0000000000
--- a/src/mainboard/google/samus/spd.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef MAINBOARD_SPD_H
-#define MAINBOARD_SPD_H
-
-#define SPD_LEN			256
-
-#define SPD_DRAM_TYPE		2
-#define  SPD_DRAM_DDR3		0x0b
-#define  SPD_DRAM_LPDDR3	0xf1
-#define SPD_DENSITY_BANKS	4
-#define SPD_ADDRESSING		5
-#define SPD_ORGANIZATION	7
-#define SPD_BUS_DEV_WIDTH	8
-#define SPD_PART_OFF		128
-#define  SPD_PART_LEN		18
-
-/* Samus board memory configuration GPIOs */
-#define SPD_GPIO_BIT0		67
-#define SPD_GPIO_BIT1		68
-#define SPD_GPIO_BIT2		69
-
-struct pei_data;
-void mainboard_fill_spd_data(struct pei_data *pei_data);
-
-#endif
diff --git a/src/mainboard/google/samus/spd/Makefile.inc b/src/mainboard/google/samus/spd/Makefile.inc
new file mode 100644
index 0000000000..657a09d01e
--- /dev/null
+++ b/src/mainboard/google/samus/spd/Makefile.inc
@@ -0,0 +1,46 @@
+##
+## 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.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+##
+
+romstage-y += spd.c
+
+SPD_BIN = $(obj)/spd.bin
+
+# { GPIO69, GPIO68, GPIO67 }
+SPD_SOURCES  = empty            # 0: { 0, 0, 0 }
+SPD_SOURCES += elpida_4Gb       # 1: { 0, 0, 1 }
+SPD_SOURCES += empty            # 2: { 0, 1, 0 }
+SPD_SOURCES += elpida_8Gb       # 3: { 0, 1, 1 }
+SPD_SOURCES += empty            # 4: { 1, 0, 0 }
+SPD_SOURCES += samsung_8Gb      # 5: { 1, 0, 1 }
+SPD_SOURCES += samsung_4Gb      # 6: { 1, 1, 0 }
+SPD_SOURCES += empty            # 7: { 1, 1, 1 }
+
+SPD_DEPS := $(foreach f, $(SPD_SOURCES), src/mainboard/$(MAINBOARDDIR)/spd/$(f).spd.hex)
+
+# Include spd rom data
+$(SPD_BIN): $(SPD_DEPS)
+	for f in $+; \
+	  do for c in $$(cat $$f | grep -v ^#); \
+	    do echo -e -n "\\x$$c"; \
+	  done; \
+	done > $@
+
+cbfs-files-y += spd.bin
+spd.bin-file := $(SPD_BIN)
+spd.bin-type := 0xab
diff --git a/src/mainboard/google/samus/spd/elpida_4Gb.spd.hex b/src/mainboard/google/samus/spd/elpida_4Gb.spd.hex
new file mode 100644
index 0000000000..e73ba6201c
--- /dev/null
+++ b/src/mainboard/google/samus/spd/elpida_4Gb.spd.hex
@@ -0,0 +1,16 @@
+92 11 F1 03 04 11 02 0B 03 11 01 08 0A 00 FE 00
+69 78 69 3C 69 11 18 81 20 08 3C 3C 01 40 83 05
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 0F 01 02 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 02 FE 00 00 00 00 00 00 00 00 00
+45 44 46 38 31 33 32 41 33 4D 41 2D 47 44 2D 46
+20 20 32 2E 30 20 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/google/samus/spd/elpida_8Gb.spd.hex b/src/mainboard/google/samus/spd/elpida_8Gb.spd.hex
new file mode 100644
index 0000000000..b790943fdc
--- /dev/null
+++ b/src/mainboard/google/samus/spd/elpida_8Gb.spd.hex
@@ -0,0 +1,16 @@
+92 11 F1 03 04 12 02 0A 03 11 01 08 0A 00 FE 00
+69 78 69 3C 69 11 18 81 20 08 3C 3C 01 40 83 05
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 0F 01 02 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 02 FE 00 00 00 00 00 00 00 00 00
+45 44 46 41 32 33 32 41 32 4D 41 2D 47 44 2D 46
+20 20 32 2E 30 20 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/google/samus/spd/empty.spd.hex b/src/mainboard/google/samus/spd/empty.spd.hex
new file mode 100644
index 0000000000..9ec39f1ba4
--- /dev/null
+++ b/src/mainboard/google/samus/spd/empty.spd.hex
@@ -0,0 +1,16 @@
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/google/samus/spd/samsung_4Gb.spd.hex b/src/mainboard/google/samus/spd/samsung_4Gb.spd.hex
new file mode 100644
index 0000000000..882105097a
--- /dev/null
+++ b/src/mainboard/google/samus/spd/samsung_4Gb.spd.hex
@@ -0,0 +1,16 @@
+92 11 F1 03 04 11 02 0B 03 11 01 08 0A 00 FE 00
+69 78 69 3C 69 11 18 81 F0 0A 3C 3C 01 40 83 01
+00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 0F 11 02 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 80 CE 01 00 00 00 00 00 00 00 00
+4B 34 45 38 45 33 30 34 45 44 2D 45 47 43 45 20
+20 20 00 00 80 CE 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/google/samus/spd/samsung_8Gb.spd.hex b/src/mainboard/google/samus/spd/samsung_8Gb.spd.hex
new file mode 100644
index 0000000000..a7a14093e7
--- /dev/null
+++ b/src/mainboard/google/samus/spd/samsung_8Gb.spd.hex
@@ -0,0 +1,16 @@
+92 11 F1 03 04 12 02 0A 03 11 01 08 0A 00 FE 00
+69 78 69 3C 69 11 18 81 F0 0A 3C 3C 01 40 83 01
+00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 0F 11 02 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 80 CE 01 00 00 00 00 00 00 00 00
+4B 34 45 36 45 33 30 34 45 44 2D 45 47 43 45 20
+20 20 00 00 80 CE 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
diff --git a/src/mainboard/google/samus/spd/spd.c b/src/mainboard/google/samus/spd/spd.c
new file mode 100644
index 0000000000..331fc6dc0f
--- /dev/null
+++ b/src/mainboard/google/samus/spd/spd.c
@@ -0,0 +1,121 @@
+/*
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <arch/byteorder.h>
+#include <cbfs.h>
+#include <console/console.h>
+#include <string.h>
+#include <broadwell/gpio.h>
+#include <broadwell/pei_data.h>
+#include <broadwell/romstage.h>
+#include <mainboard/google/samus/gpio.h>
+#include <mainboard/google/samus/spd/spd.h>
+
+static void mainboard_print_spd_info(uint8_t spd[])
+{
+	const int spd_banks[8] = {  8, 16, 32, 64, -1, -1, -1, -1 };
+	const int spd_capmb[8] = {  1,  2,  4,  8, 16, 32, 64,  0 };
+	const int spd_rows[8]  = { 12, 13, 14, 15, 16, -1, -1, -1 };
+	const int spd_cols[8]  = {  9, 10, 11, 12, -1, -1, -1, -1 };
+	const int spd_ranks[8] = {  1,  2,  3,  4, -1, -1, -1, -1 };
+	const int spd_devw[8]  = {  4,  8, 16, 32, -1, -1, -1, -1 };
+	const int spd_busw[8]  = {  8, 16, 32, 64, -1, -1, -1, -1 };
+	char spd_name[SPD_PART_LEN+1] = { 0 };
+
+	int banks = spd_banks[(spd[SPD_DENSITY_BANKS] >> 4) & 7];
+	int capmb = spd_capmb[spd[SPD_DENSITY_BANKS] & 7] * 256;
+	int rows  = spd_rows[(spd[SPD_ADDRESSING] >> 3) & 7];
+	int cols  = spd_cols[spd[SPD_ADDRESSING] & 7];
+	int ranks = spd_ranks[(spd[SPD_ORGANIZATION] >> 3) & 7];
+	int devw  = spd_devw[spd[SPD_ORGANIZATION] & 7];
+	int busw  = spd_busw[spd[SPD_BUS_DEV_WIDTH] & 7];
+
+	/* Module type */
+	printk(BIOS_INFO, "SPD: module type is ");
+	switch (spd[SPD_DRAM_TYPE]) {
+	case SPD_DRAM_DDR3:
+		printk(BIOS_INFO, "DDR3\n");
+		break;
+	case SPD_DRAM_LPDDR3:
+		printk(BIOS_INFO, "LPDDR3\n");
+		break;
+	default:
+		printk(BIOS_INFO, "Unknown (%02x)\n", spd[SPD_DRAM_TYPE]);
+		break;
+	}
+
+	/* Module Part Number */
+	memcpy(spd_name, &spd[SPD_PART_OFF], SPD_PART_LEN);
+	spd_name[SPD_PART_LEN] = 0;
+	printk(BIOS_INFO, "SPD: module part is %s\n", spd_name);
+
+	printk(BIOS_INFO, "SPD: banks %d, ranks %d, rows %d, columns %d, "
+	       "density %d Mb\n", banks, ranks, rows, cols, capmb);
+	printk(BIOS_INFO, "SPD: device width %d bits, bus width %d bits\n",
+	       devw, busw);
+
+	if (capmb > 0 && busw > 0 && devw > 0 && ranks > 0) {
+		/* SIZE = DENSITY / 8 * BUS_WIDTH / SDRAM_WIDTH * RANKS */
+		printk(BIOS_INFO, "SPD: module size is %u MB (per channel)\n",
+		       capmb / 8 * busw / devw * ranks);
+	}
+}
+
+/* Copy SPD data for on-board memory */
+void mainboard_fill_spd_data(struct pei_data *pei_data)
+{
+	int spd_gpio[3];
+	int spd_index;
+	int spd_file_len;
+	struct cbfs_file *spd_file;
+
+	spd_gpio[0] = get_gpio(SPD_GPIO_BIT0);
+	spd_gpio[1] = get_gpio(SPD_GPIO_BIT1);
+	spd_gpio[2] = get_gpio(SPD_GPIO_BIT2);
+
+	spd_index = spd_gpio[2] << 2 | spd_gpio[1] << 1 | spd_gpio[0];
+
+	printk(BIOS_DEBUG, "SPD: index %d (GPIO%d=%d GPIO%d=%d GPIO%d=%d)\n",
+	       spd_index,
+	       SPD_GPIO_BIT2, spd_gpio[2],
+	       SPD_GPIO_BIT1, spd_gpio[1],
+	       SPD_GPIO_BIT0, spd_gpio[0]);
+
+	spd_file = cbfs_get_file(CBFS_DEFAULT_MEDIA, "spd.bin");
+	if (!spd_file)
+		die("SPD data not found.");
+	spd_file_len = ntohl(spd_file->len);
+
+	if (spd_file_len < ((spd_index + 1) * SPD_LEN)) {
+		printk(BIOS_ERR, "SPD index override to 0 - old hardware?\n");
+		spd_index = 0;
+	}
+
+	if (spd_file_len < SPD_LEN)
+		die("Missing SPD data.");
+
+	/* Assume same memory in both channels */
+	spd_index *= SPD_LEN;
+	memcpy(pei_data->spd_data[0][0],
+	       ((char*)CBFS_SUBHEADER(spd_file)) + spd_index, SPD_LEN);
+	memcpy(pei_data->spd_data[1][0],
+	       ((char*)CBFS_SUBHEADER(spd_file)) + spd_index, SPD_LEN);
+
+	mainboard_print_spd_info(pei_data->spd_data[0][0]);
+}
diff --git a/src/mainboard/google/samus/spd/spd.h b/src/mainboard/google/samus/spd/spd.h
new file mode 100644
index 0000000000..98180fa72c
--- /dev/null
+++ b/src/mainboard/google/samus/spd/spd.h
@@ -0,0 +1,43 @@
+/*
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef MAINBOARD_SPD_H
+#define MAINBOARD_SPD_H
+
+#define SPD_LEN			256
+
+#define SPD_DRAM_TYPE		2
+#define  SPD_DRAM_DDR3		0x0b
+#define  SPD_DRAM_LPDDR3	0xf1
+#define SPD_DENSITY_BANKS	4
+#define SPD_ADDRESSING		5
+#define SPD_ORGANIZATION	7
+#define SPD_BUS_DEV_WIDTH	8
+#define SPD_PART_OFF		128
+#define  SPD_PART_LEN		18
+
+/* Samus board memory configuration GPIOs */
+#define SPD_GPIO_BIT0		67
+#define SPD_GPIO_BIT1		68
+#define SPD_GPIO_BIT2		69
+
+struct pei_data;
+void mainboard_fill_spd_data(struct pei_data *pei_data);
+
+#endif
-- 
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