google/eve: Add new board

Add the eve board files using kabylake and FSP 2.0.

BUG=chrome-os-partner:58666
TEST=build and boot on eve board

Change-Id: I7ca71fe052608d710ee65d078df7af7b55d382bc
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/17177
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)

src/mainboard/google/eve/spd/spd.c

@@ -0,0 +1,116 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 Google Inc.
+ * Copyright (C) 2016 Intel Corporation
+ *
+ * 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 <arch/byteorder.h>
+#include <cbfs.h>
+#include <console/console.h>
+#include <gpio.h>
+#include <soc/gpio.h>
+#include <soc/pei_data.h>
+#include <soc/romstage.h>
+#include <string.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);
+	}
+}
+
+uintptr_t mainboard_get_spd_data(void)
+{
+	char *spd_file;
+	size_t spd_file_len;
+	int spd_index;
+
+	gpio_t spd_gpios[] = {
+		GPIO_MEM_CONFIG_0,
+		GPIO_MEM_CONFIG_1,
+		GPIO_MEM_CONFIG_2,
+		GPIO_MEM_CONFIG_3,
+	};
+
+	spd_index = gpio_base2_value(spd_gpios, ARRAY_SIZE(spd_gpios));
+	printk(BIOS_INFO, "SPD index %d\n", spd_index);
+
+	/* Load SPD data from CBFS */
+	spd_file = cbfs_boot_map_with_leak("spd.bin", CBFS_TYPE_SPD,
+		&spd_file_len);
+	if (!spd_file)
+		die("SPD data not found.");
+
+	/* make sure we have at least one SPD in the file. */
+	if (spd_file_len < SPD_LEN)
+		die("Missing SPD data.");
+
+	/* Make sure we did not overrun the buffer */
+	if (spd_file_len < ((spd_index + 1) * SPD_LEN)) {
+		printk(BIOS_ERR, "SPD index override to 1 - old hardware?\n");
+		spd_index = 1;
+	}
+
+	spd_index *= SPD_LEN;
+	mainboard_print_spd_info((uint8_t *)(spd_file + spd_index));
+
+	return (uintptr_t)(spd_file + spd_index);
+}