New patch to review for coreboot: cda9eec include/device: Add convenience definitions for DRAM SPDs

[Alexandru Gagniuc]

Alexandru Gagniuc ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/3266

-gerrit

commit cda9eecc24825017294a0ce01adc45b8f29b8c18
Author: Alexandru Gagniuc 
Date:   Tue May 21 14:07:41 2013 -0500

include/device: Add convenience definitions for DRAM SPDs

Add definitions for identifying the type of module from SPD data.
    Also add a macro for convenient enabling and disabling of verbose RAM
    init debug messages.

These are used in the VX900 branch.

Change-Id: Ic7871e82c2523a94eac8e07979a8e34e0b459b46
    Signed-off-by: Alexandru Gagniuc 
---
 src/include/device/dram.h | 88 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)

diff --git a/src/include/device/dram.h b/src/include/device/dram.h
new file mode 100644
index 0000000..922a1c2
--- /dev/null
+++ b/src/include/device/dram.h
@@ -0,0 +1,88 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011-2013  Alexandru Gagniuc 
+ *
+ * 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, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, see http://www.gnu.org/licenses/.
+ */
+
+#ifndef DEVICE_DRAM_H
+#define DEVICE_DRAM_H
+
+/**
+ * @file dram.h
+ * @{
+ *
+ * \brief Common definitions for DRAM SPDs
+ *
+ * Include this file as:
+ * @code{.c}
+ *	#include <device/dram.h>
+ * @endcode
+ */
+
+#include <stdint.h>
+
+
+/* DRAM type, byte 2 of spd */
+enum dram_type {
+	DRAM_TYPE_UNDEFINED		= 0x00,
+	DRAM_TYPE_FPM_DRAM		= 0x01,
+	DRAM_TYPE_EDO			= 0x02,
+	DRAM_TYPE_PIPELINED_NIBBLE	= 0x03,
+	DRAM_TYPE_SDRAM			= 0x04,
+	DRAM_TYPE_ROM			= 0x05,
+	DRAM_TYPE_DDR_SGRAM		= 0x06,
+	DRAM_TYPE_DDR			= 0x07,
+	DRAM_TYPE_DDR2			= 0x08,
+	DRAM_TYPE_DDR2_FBDIMM		= 0x09,
+	DRAM_TYPE_DDR2_FB_PROBE		= 0x0a,
+	DRAM_TYPE_DDR3			= 0x0b,
+};
+
+/* Module type (byte 3, bits 3:0) of SPD */
+enum dimm_type {
+	DIMM_TYPE_UNDEFINED		= 0,
+	DIMM_TYPE_RDIMM			= 1,
+	DIMM_TYPE_UDIMM			= 2,
+	DIMM_TYPE_SO_DIMM		= 3,
+	DIMM_TYPE_MICRO_DIMM		= 4,
+	DIMM_TYPE_MINI_RDIMM		= 5,
+	DIMM_TYPE_MINI_UDIMM		= 6,
+	DIMM_TYPE_MINI_CDIMM		= 7,
+	DIMM_TYPE_72B_SO_UDIMM		= 8,
+	DIMM_TYPE_72B_SO_RDIMM		= 9,
+	DIMM_TYPE_72B_SO_CDIMM		= 10,
+	/* Masks to bits 3:0 to give the dimm type */
+	DIMM_TYPE_MASK			= 0x0f,
+};
+
+/**
+ * \brief Convenience macro for enabling printk with CONFIG_DEBUG_RAM_SETUP
+ *
+ * Use this macro instead of printk(); for verbose RAM initialization messages.
+ * When CONFIG_DEBUG_RAM_SETUP is not selected, these messages are automatically
+ * disabled.
+ * @{
+ */
+#if defined(CONFIG_DEBUG_RAM_SETUP) && (CONFIG_DEBUG_RAM_SETUP)
+#define printram(x, ...) printk(BIOS_DEBUG, x, ##__VA_ARGS__)
+#else
+#define printram(x, ...)
+#endif
+/** @} */
+
+
+/** @} */
+#endif /* DEVICE_DRAM_H */