1 files changed, 70 insertions, 0 deletions
diff --git a/src/include/device/dram/common.h b/src/include/device/dram/common.h
new file mode 100644
index 0000000000..47023704fe
--- /dev/null
+++ b/src/include/device/dram/common.h
@@ -0,0 +1,70 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013  Alexandru Gagniuc <mr.nuke.me@gmail.com>
+ * Copyright (C) 2017 Patrick Rudolph <siro@das-labor.org>
+ *
+ * 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.
+ */
+
+#ifndef DEVICE_DRAM_COMMON_H
+#define DEVICE_DRAM_COMMON_H
+
+/**
+ * \brief Convenience definitions for TCK values
+ *
+ * Different values for tCK, representing standard DDR3 frequencies.
+ * These values are in 1/256 ns units.
+ * @{
+ */
+#define NS2MHZ_DIV256	(1000 << 8)
+
+#define TCK_1333MHZ     192
+#define TCK_1200MHZ     212
+#define TCK_1100MHZ     232
+#define TCK_1066MHZ     240
+#define TCK_1000MHZ     256
+#define TCK_933MHZ      274
+#define TCK_900MHZ      284
+#define TCK_800MHZ      320
+#define TCK_700MHZ      365
+#define TCK_666MHZ      384
+#define TCK_533MHZ      480
+#define TCK_400MHZ      640
+#define TCK_333MHZ      768
+#define TCK_266MHZ      960
+#define TCK_200MHZ      1280
+/** @} */
+
+/**
+ * \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 IS_ENABLED(CONFIG_DEBUG_RAM_SETUP)
+#define printram(x, ...) printk(BIOS_DEBUG, x, ##__VA_ARGS__)
+#else
+#define printram(x, ...)
+#endif
+/** @} */
+
+/** Result of the SPD decoding process */
+enum spd_status {
+	SPD_STATUS_OK = 0,
+	SPD_STATUS_INVALID,
+	SPD_STATUS_CRC_ERROR,
+	SPD_STATUS_INVALID_FIELD,
+};
+
+#endif /* DEVICE_DRAM_COMMON_H */