gizmosphere/gizmo: Move support of SPD data in CBFS

This code is not specific to any board or AGESA family.

Change-Id: I26c32fbe8e45018e239762b072dfe3da05271697
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5690
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

2 files changed, 69 insertions, 0 deletions

diff --git a/src/device/dram/Makefile.inc b/src/device/dram/Makefile.inc
new file mode 100644
index 0000000000..05f440b3b7
--- /dev/null
+++ b/src/device/dram/Makefile.inc
@@ -0,0 +1 @@
+romstage-$(CONFIG_SPD_CACHE) += spd_cache.c ddr3.c
diff --git a/src/device/dram/spd_cache.c b/src/device/dram/spd_cache.c
new file mode 100644
index 0000000000..0032f327dd
--- /dev/null
+++ b/src/device/dram/spd_cache.c
@@ -0,0 +1,68 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Advanced Micro Devices, Inc.
+ * Copyright (C) 2013 Sage Electronic Engineering, LLC
+ *
+ * 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 <cbfs.h>
+#include <console/console.h>
+#include <device/dram/ddr3.h>
+#include <spd_cache.h>
+#include <stdint.h>
+#include <string.h>
+
+#define SPD_SIZE	128
+#define SPD_CRC_HI	127
+#define SPD_CRC_LO	126
+
+int read_spd_from_cbfs(u8 *buf, int idx)
+{
+	const char *spd_file;
+	size_t spd_file_len = 0;
+	size_t min_len = (idx + 1) * SPD_SIZE;
+
+	printk(BIOS_DEBUG, "read SPD\n");
+	spd_file = cbfs_get_file_content(CBFS_DEFAULT_MEDIA, "spd.bin", 0xab,
+					 &spd_file_len);
+	if (!spd_file)
+		printk(BIOS_EMERG, "file [spd.bin] not found in CBFS");
+	if (spd_file_len < min_len)
+		printk(BIOS_EMERG, "Missing SPD data.");
+	if (!spd_file || spd_file_len < min_len)
+		return -1;
+
+	memcpy(buf, spd_file + (idx * SPD_SIZE), SPD_SIZE);
+
+	u16 crc = spd_ddr3_calc_crc(buf, SPD_SIZE);
+
+	if (((buf[SPD_CRC_LO] == 0) && (buf[SPD_CRC_HI] == 0))
+	 || (buf[SPD_CRC_LO] != (crc & 0xff))
+	 || (buf[SPD_CRC_HI] != (crc >> 8))) {
+		printk(BIOS_WARNING, "SPD has a invalid or zero-valued CRC\n");
+		buf[SPD_CRC_LO] = crc & 0xff;
+		buf[SPD_CRC_HI] = crc >> 8;
+		u16 i;
+		printk(BIOS_WARNING, "\nDisplay the SPD");
+		for (i = 0; i < SPD_SIZE; i++) {
+			if((i % 16) == 0x00)
+				printk(BIOS_WARNING, "\n%02x:  ", i);
+			printk(BIOS_WARNING, "%02x ", buf[i]);
+		}
+		printk(BIOS_WARNING, "\n");
+	 }
+	 return 0;
+}