mainboard/intel: Add Braswell based Strago board

Add the initial files to support the Intel RVP for Braswell.
Matches chromium tree at 927026db

This board uses the Braswell FSP 1.1 image and does not build without
the FspUpdVpd.h file.

BRANCH=none
BUG=None
TEST=Build and run ChromeOS on strago

Change-Id: I5cb2efe3d8adf919165c62b25e08c544b316a05a
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: http://review.coreboot.org/10052
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 120 insertions, 0 deletions

diff --git a/src/mainboard/intel/strago/spd/spd.c b/src/mainboard/intel/strago/spd/spd.c
new file mode 100755
index 0000000000..a37b4acbba
--- /dev/null
+++ b/src/mainboard/intel/strago/spd/spd.c
@@ -0,0 +1,120 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Google Inc.
+ * Copyright (C) 2015 Intel Corp.
+ *
+ * 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.
+ */
+
+#include <cbfs.h>
+#include <console/console.h>
+#include <lib.h>
+#include <soc/gpio.h>
+#include <soc/romstage.h>
+#include <string.h>
+
+#define SPD_SIZE 256
+#define SATA_GP3_PAD_CFG0       0x5828
+#define I2C3_SCL_PAD_CFG0       0x5438
+#define MF_PLT_CLK1_PAD_CFG0    0x4410
+#define I2C3_SDA_PAD_CFG0       0x5420
+
+/*
+ * 0b0000 - 4GiB total - 2 x 2GiB Samsung K4B4G1646Q-HYK0 1600MHz
+ * 0b0001 - 4GiB total - 2 x 2GiB Hynix  H5TC4G63CFR-PBA 1600MHz
+ * 0b0010- 2GiB total - 1 x 2GiB Samsung K4B4G1646Q-HYK0 1600MHz
+ * 0b0011 - 2GiB total - 1 x 2GiB Hynix  H5TC4G63CFR-PBA 1600MHz
+ */
+static const uint32_t dual_channel_config = (1 << 0);
+
+static void *get_spd_pointer(char *spd_file_content, int total_spds, int *dual)
+{
+	int ram_id = 0;
+	ram_id |= get_gpio(COMMUNITY_GPSOUTHWEST_BASE, SATA_GP3_PAD_CFG0) << 0;
+	ram_id |= get_gpio(COMMUNITY_GPSOUTHWEST_BASE, I2C3_SCL_PAD_CFG0) << 1;
+	ram_id |= get_gpio(COMMUNITY_GPSOUTHEAST_BASE, MF_PLT_CLK1_PAD_CFG0)
+		<< 2;
+	ram_id |= get_gpio(COMMUNITY_GPSOUTHWEST_BASE, I2C3_SDA_PAD_CFG0) << 3;
+
+	/*
+	 * There are only 2 SPDs supported on Cyan Board:
+	 * Samsung 4G:0000 & Hynix 2G:0011
+	 */
+
+	/*
+	 * RAMID0 on the first boot does not read the correct value,so checking
+	 * bit 1 is enough as WA
+	 */
+	if (ram_id > 0)
+		ram_id = 3;
+	printk(BIOS_DEBUG, "ram_id=%d, total_spds: %d\n", ram_id, total_spds);
+
+	if (ram_id >= total_spds)
+		return NULL;
+
+	/* Single channel configs */
+	if (dual_channel_config & (1 << ram_id))
+		*dual = 1;
+
+	return &spd_file_content[SPD_SIZE * ram_id];
+}
+
+/* Copy SPD data for on-board memory */
+void mainboard_fill_spd_data(struct pei_data *ps)
+{
+	char *spd_file;
+	size_t spd_file_len;
+	void *spd_content;
+	int dual_channel = 0;
+
+	/* Find the SPD data in CBFS. */
+	spd_file = cbfs_boot_map_with_leak("spd.bin", CBFS_TYPE_SPD,
+		&spd_file_len);
+	if (!spd_file)
+		die("SPD data not found.");
+
+	if (spd_file_len < SPD_SIZE)
+		die("Missing SPD data.");
+
+	/*
+	 * Both channels are always present in SPD data. Always use matched
+	 * DIMMs so use the same SPD data for each DIMM.
+	 */
+	spd_content = get_spd_pointer(spd_file,
+				      spd_file_len / SPD_SIZE,
+				      &dual_channel);
+	if (IS_ENABLED(CONFIG_DISPLAY_SPD_DATA) && spd_content != NULL) {
+		printk(BIOS_DEBUG, "SPD Data:\n");
+		hexdump(spd_content, SPD_SIZE);
+		printk(BIOS_DEBUG, "\n");
+	}
+
+	/*
+	 * Set SPD and memory configuration:
+	 * Memory type: 0=DimmInstalled,
+	 *              1=SolderDownMemory,
+	 *              2=DimmDisabled
+	 */
+	if (spd_content != NULL) {
+		ps->spd_data_ch0 = spd_content;
+		ps->spd_ch0_config = 1;
+		if (dual_channel) {
+			ps->spd_data_ch1 = spd_content;
+			ps->spd_ch1_config = 1;
+		} else {
+			ps->spd_ch1_config = 2;
+		}
+	}
+}