[PATCH] Add DDR2 optimization code for Sequoia (440EPx) board

This code will optimize the DDR2 controller setup on a board specific
basis.

Note: This code doesn't work right now on the NAND booting image for the
Sequoia board, since it doesn't fit into the 4kBytes for the SPL image.

Signed-off-by: Stefan Roese <sr@denx.de>

6 files changed, 872 insertions, 14 deletions

diff --git a/board/amcc/sequoia/init.S b/board/amcc/sequoia/init.S
index 3d4ac85..45bcd4b 100644
--- a/board/amcc/sequoia/init.S
+++ b/board/amcc/sequoia/init.S
@@ -90,7 +90,7 @@ tlbtab:
 	/*
 	 * BOOT_CS (FLASH) must be first. Before relocation SA_I can be off to use the
 	 * speed up boot process. It is patched after relocation to enable SA_I
-	*/
+	 */
 #ifndef CONFIG_NAND_SPL
 	tlbentry( CFG_BOOT_BASE_ADDR, SZ_256M, CFG_BOOT_BASE_ADDR, 1, AC_R|AC_W|AC_X|SA_G )
 #else
diff --git a/board/amcc/sequoia/sdram.c b/board/amcc/sequoia/sdram.c
index 53f728d..77f1438 100644
--- a/board/amcc/sequoia/sdram.c
+++ b/board/amcc/sequoia/sdram.c
@@ -1,5 +1,12 @@
 /*
  * (C) Copyright 2006
+ * Sylvie Gohl,             AMCC/IBM, gohl.sylvie@fr.ibm.com
+ * Jacqueline Pira-Ferriol, AMCC/IBM, jpira-ferriol@fr.ibm.com
+ * Thierry Roman,           AMCC/IBM, thierry_roman@fr.ibm.com
+ * Alain Saurel,            AMCC/IBM, alain.saurel@fr.ibm.com
+ * Robert Snyder,           AMCC/IBM, rob.snyder@fr.ibm.com
+ *
+ * (C) Copyright 2006
  * Stefan Roese, DENX Software Engineering, sr@denx.de.
  *
  * This program is free software; you can redistribute it and/or
@@ -18,10 +25,352 @@
  * MA 02111-1307 USA
  */
 
+/* define DEBUG for debug output */
+#undef DEBUG
+
 #include <common.h>
 #include <asm/processor.h>
+#include <asm/io.h>
 #include <ppc440.h>
 
+#include "sdram.h"
+
+#if !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL) || \
+	defined(CONFIG_DDR_DATA_EYE)
+/*-----------------------------------------------------------------------------+
+ * wait_for_dlllock.
+ +----------------------------------------------------------------------------*/
+static int wait_for_dlllock(void)
+{
+	unsigned long val;
+	int wait = 0;
+
+	/* -----------------------------------------------------------+
+	 * Wait for the DCC master delay line to finish calibration
+	 * ----------------------------------------------------------*/
+	mtdcr(ddrcfga, DDR0_17);
+	val = DDR0_17_DLLLOCKREG_UNLOCKED;
+
+	while (wait != 0xffff) {
+		val = mfdcr(ddrcfgd);
+		if ((val & DDR0_17_DLLLOCKREG_MASK) == DDR0_17_DLLLOCKREG_LOCKED)
+			/* dlllockreg bit on */
+			return 0;
+		else
+			wait++;
+	}
+	debug("0x%04x: DDR0_17 Value (dlllockreg bit): 0x%08x\n", wait, val);
+	debug("Waiting for dlllockreg bit to raise\n");
+
+	return -1;
+}
+#endif
+
+#if defined(CONFIG_DDR_DATA_EYE)
+/*-----------------------------------------------------------------------------+
+ * wait_for_dram_init_complete.
+ +----------------------------------------------------------------------------*/
+int wait_for_dram_init_complete(void)
+{
+	unsigned long val;
+	int wait = 0;
+
+	/* --------------------------------------------------------------+
+	 * Wait for 'DRAM initialization complete' bit in status register
+	 * -------------------------------------------------------------*/
+	mtdcr(ddrcfga, DDR0_00);
+
+	while (wait != 0xffff) {
+		val = mfdcr(ddrcfgd);
+		if ((val & DDR0_00_INT_STATUS_BIT6) == DDR0_00_INT_STATUS_BIT6)
+			/* 'DRAM initialization complete' bit */
+			return 0;
+		else
+			wait++;
+	}
+
+	debug("DRAM initialization complete bit in status register did not rise\n");
+
+	return -1;
+}
+
+#define NUM_TRIES 64
+#define NUM_READS 10
+
+/*-----------------------------------------------------------------------------+
+ * denali_core_search_data_eye.
+ +----------------------------------------------------------------------------*/
+void denali_core_search_data_eye(unsigned long memory_size)
+{
+	int k, j;
+	u32 val;
+	u32 wr_dqs_shift, dqs_out_shift, dll_dqs_delay_X;
+	u32 max_passing_cases = 0, wr_dqs_shift_with_max_passing_cases = 0;
+	u32 passing_cases = 0, dll_dqs_delay_X_sw_val = 0;
+	u32 dll_dqs_delay_X_start_window = 0, dll_dqs_delay_X_end_window = 0;
+	volatile u32 *ram_pointer;
+	u32 test[NUM_TRIES] = {
+		0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF,
+		0x00000000, 0x00000000, 0xFFFFFFFF, 0xFFFFFFFF,
+		0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000,
+		0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000,
+		0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555,
+		0xAAAAAAAA, 0xAAAAAAAA, 0x55555555, 0x55555555,
+		0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA,
+		0x55555555, 0x55555555, 0xAAAAAAAA, 0xAAAAAAAA,
+		0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A,
+		0xA5A5A5A5, 0xA5A5A5A5, 0x5A5A5A5A, 0x5A5A5A5A,
+		0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5,
+		0x5A5A5A5A, 0x5A5A5A5A, 0xA5A5A5A5, 0xA5A5A5A5,
+		0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA,
+		0xAA55AA55, 0xAA55AA55, 0x55AA55AA, 0x55AA55AA,
+		0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55,
+		0x55AA55AA, 0x55AA55AA, 0xAA55AA55, 0xAA55AA55 };
+
+	ram_pointer = (volatile u32 *)(CFG_SDRAM_BASE);
+
+	for (wr_dqs_shift = 64; wr_dqs_shift < 96; wr_dqs_shift++) {
+		/*for (wr_dqs_shift=1; wr_dqs_shift<96; wr_dqs_shift++) {*/
+
+		/* -----------------------------------------------------------+
+		 * De-assert 'start' parameter.
+		 * ----------------------------------------------------------*/
+		mtdcr(ddrcfga, DDR0_02);
+		val = (mfdcr(ddrcfgd) & ~DDR0_02_START_MASK) | DDR0_02_START_OFF;
+		mtdcr(ddrcfgd, val);
+
+		/* -----------------------------------------------------------+
+		 * Set 'wr_dqs_shift'
+		 * ----------------------------------------------------------*/
+		mtdcr(ddrcfga, DDR0_09);
+		val = (mfdcr(ddrcfgd) & ~DDR0_09_WR_DQS_SHIFT_MASK)
+			| DDR0_09_WR_DQS_SHIFT_ENCODE(wr_dqs_shift);
+		mtdcr(ddrcfgd, val);
+
+		/* -----------------------------------------------------------+
+		 * Set 'dqs_out_shift' = wr_dqs_shift + 32
+		 * ----------------------------------------------------------*/
+		dqs_out_shift = wr_dqs_shift + 32;
+		mtdcr(ddrcfga, DDR0_22);
+		val = (mfdcr(ddrcfgd) & ~DDR0_22_DQS_OUT_SHIFT_MASK)
+			| DDR0_22_DQS_OUT_SHIFT_ENCODE(dqs_out_shift);
+		mtdcr(ddrcfgd, val);
+
+		passing_cases = 0;
+
+		for (dll_dqs_delay_X = 1; dll_dqs_delay_X < 64; dll_dqs_delay_X++) {
+			/*for (dll_dqs_delay_X=1; dll_dqs_delay_X<128; dll_dqs_delay_X++) {*/
+			/* -----------------------------------------------------------+
+			 * Set 'dll_dqs_delay_X'.
+			 * ----------------------------------------------------------*/
+			/* dll_dqs_delay_0 */
+			mtdcr(ddrcfga, DDR0_17);
+			val = (mfdcr(ddrcfgd) & ~DDR0_17_DLL_DQS_DELAY_0_MASK)
+				| DDR0_17_DLL_DQS_DELAY_0_ENCODE(dll_dqs_delay_X);
+			mtdcr(ddrcfgd, val);
+			/* dll_dqs_delay_1 to dll_dqs_delay_4 */
+			mtdcr(ddrcfga, DDR0_18);
+			val = (mfdcr(ddrcfgd) & ~DDR0_18_DLL_DQS_DELAY_X_MASK)
+				| DDR0_18_DLL_DQS_DELAY_4_ENCODE(dll_dqs_delay_X)
+				| DDR0_18_DLL_DQS_DELAY_3_ENCODE(dll_dqs_delay_X)
+				| DDR0_18_DLL_DQS_DELAY_2_ENCODE(dll_dqs_delay_X)
+				| DDR0_18_DLL_DQS_DELAY_1_ENCODE(dll_dqs_delay_X);
+			mtdcr(ddrcfgd, val);
+			/* dll_dqs_delay_5 to dll_dqs_delay_8 */
+			mtdcr(ddrcfga, DDR0_19);
+			val = (mfdcr(ddrcfgd) & ~DDR0_19_DLL_DQS_DELAY_X_MASK)
+				| DDR0_19_DLL_DQS_DELAY_8_ENCODE(dll_dqs_delay_X)
+				| DDR0_19_DLL_DQS_DELAY_7_ENCODE(dll_dqs_delay_X)
+				| DDR0_19_DLL_DQS_DELAY_6_ENCODE(dll_dqs_delay_X)
+				| DDR0_19_DLL_DQS_DELAY_5_ENCODE(dll_dqs_delay_X);
+			mtdcr(ddrcfgd, val);
+
+			ppcMsync();
+			ppcMbar();
+
+			/* -----------------------------------------------------------+
+			 * Assert 'start' parameter.
+			 * ----------------------------------------------------------*/
+			mtdcr(ddrcfga, DDR0_02);
+			val = (mfdcr(ddrcfgd) & ~DDR0_02_START_MASK) | DDR0_02_START_ON;
+			mtdcr(ddrcfgd, val);
+
+			ppcMsync();
+			ppcMbar();
+
+			/* -----------------------------------------------------------+
+			 * Wait for the DCC master delay line to finish calibration
+			 * ----------------------------------------------------------*/
+			if (wait_for_dlllock() != 0) {
+				printf("dlllock did not occur !!!\n");
+				printf("denali_core_search_data_eye!!!\n");
+				printf("wr_dqs_shift = %d - dll_dqs_delay_X = %d\n",
+				       wr_dqs_shift, dll_dqs_delay_X);
+				hang();
+			}
+			ppcMsync();
+			ppcMbar();
+
+			if (wait_for_dram_init_complete() != 0) {
+				printf("dram init complete did not occur !!!\n");
+				printf("denali_core_search_data_eye!!!\n");
+				printf("wr_dqs_shift = %d - dll_dqs_delay_X = %d\n",
+				       wr_dqs_shift, dll_dqs_delay_X);
+				hang();
+			}
+			udelay(100);  /* wait 100us to ensure init is really completed !!! */
+
+			/* write values */
+			for (j=0; j<NUM_TRIES; j++) {
+				ram_pointer[j] = test[j];
+
+				/* clear any cache at ram location */
+				__asm__("dcbf 0,%0": :"r" (&ram_pointer[j]));
+			}
+
+			/* read values back */
+			for (j=0; j<NUM_TRIES; j++) {
+				for (k=0; k<NUM_READS; k++) {
+					/* clear any cache at ram location */
+					__asm__("dcbf 0,%0": :"r" (&ram_pointer[j]));
+
+					if (ram_pointer[j] != test[j])
+						break;
+				}
+
+				/* read error */
+				if (k != NUM_READS)
+					break;
+			}
+
+			/* See if the dll_dqs_delay_X value passed.*/
+			if (j < NUM_TRIES) {
+				/* Failed */
+				passing_cases = 0;
+				/* break; */
+			} else {
+				/* Passed */
+				if (passing_cases == 0)
+					dll_dqs_delay_X_sw_val = dll_dqs_delay_X;
+				passing_cases++;
+				if (passing_cases >= max_passing_cases) {
+					max_passing_cases = passing_cases;
+					wr_dqs_shift_with_max_passing_cases = wr_dqs_shift;
+					dll_dqs_delay_X_start_window = dll_dqs_delay_X_sw_val;
+					dll_dqs_delay_X_end_window = dll_dqs_delay_X;
+				}
+			}
+
+			/* -----------------------------------------------------------+
+			 * De-assert 'start' parameter.
+			 * ----------------------------------------------------------*/
+			mtdcr(ddrcfga, DDR0_02);
+			val = (mfdcr(ddrcfgd) & ~DDR0_02_START_MASK) | DDR0_02_START_OFF;
+			mtdcr(ddrcfgd, val);
+
+		} /* for (dll_dqs_delay_X=0; dll_dqs_delay_X<128; dll_dqs_delay_X++) */
+
+	} /* for (wr_dqs_shift=0; wr_dqs_shift<96; wr_dqs_shift++) */
+
+	/* -----------------------------------------------------------+
+	 * Largest passing window is now detected.
+	 * ----------------------------------------------------------*/
+
+	/* Compute dll_dqs_delay_X value */
+	dll_dqs_delay_X = (dll_dqs_delay_X_end_window + dll_dqs_delay_X_start_window) / 2;
+	wr_dqs_shift = wr_dqs_shift_with_max_passing_cases;
+
+	debug("DQS calibration - Window detected:\n");
+	debug("max_passing_cases = %d\n", max_passing_cases);
+	debug("wr_dqs_shift      = %d\n", wr_dqs_shift);
+	debug("dll_dqs_delay_X   = %d\n", dll_dqs_delay_X);
+	debug("dll_dqs_delay_X window = %d - %d\n",
+	       dll_dqs_delay_X_start_window, dll_dqs_delay_X_end_window);
+
+	/* -----------------------------------------------------------+
+	 * De-assert 'start' parameter.
+	 * ----------------------------------------------------------*/
+	mtdcr(ddrcfga, DDR0_02);
+	val = (mfdcr(ddrcfgd) & ~DDR0_02_START_MASK) | DDR0_02_START_OFF;
+	mtdcr(ddrcfgd, val);
+
+	/* -----------------------------------------------------------+
+	 * Set 'wr_dqs_shift'
+	 * ----------------------------------------------------------*/
+	mtdcr(ddrcfga, DDR0_09);
+	val = (mfdcr(ddrcfgd) & ~DDR0_09_WR_DQS_SHIFT_MASK)
+		| DDR0_09_WR_DQS_SHIFT_ENCODE(wr_dqs_shift);
+	mtdcr(ddrcfgd, val);
+	debug("DDR0_09=0x%08lx\n", val);
+
+	/* -----------------------------------------------------------+
+	 * Set 'dqs_out_shift' = wr_dqs_shift + 32
+	 * ----------------------------------------------------------*/
+	dqs_out_shift = wr_dqs_shift + 32;
+	mtdcr(ddrcfga, DDR0_22);
+	val = (mfdcr(ddrcfgd) & ~DDR0_22_DQS_OUT_SHIFT_MASK)
+		| DDR0_22_DQS_OUT_SHIFT_ENCODE(dqs_out_shift);
+	mtdcr(ddrcfgd, val);
+	debug("DDR0_22=0x%08lx\n", val);
+
+	/* -----------------------------------------------------------+
+	 * Set 'dll_dqs_delay_X'.
+	 * ----------------------------------------------------------*/
+	/* dll_dqs_delay_0 */
+	mtdcr(ddrcfga, DDR0_17);
+	val = (mfdcr(ddrcfgd) & ~DDR0_17_DLL_DQS_DELAY_0_MASK)
+		| DDR0_17_DLL_DQS_DELAY_0_ENCODE(dll_dqs_delay_X);
+	mtdcr(ddrcfgd, val);
+	debug("DDR0_17=0x%08lx\n", val);
+
+	/* dll_dqs_delay_1 to dll_dqs_delay_4 */
+	mtdcr(ddrcfga, DDR0_18);
+	val = (mfdcr(ddrcfgd) & ~DDR0_18_DLL_DQS_DELAY_X_MASK)
+		| DDR0_18_DLL_DQS_DELAY_4_ENCODE(dll_dqs_delay_X)
+		| DDR0_18_DLL_DQS_DELAY_3_ENCODE(dll_dqs_delay_X)
+		| DDR0_18_DLL_DQS_DELAY_2_ENCODE(dll_dqs_delay_X)
+		| DDR0_18_DLL_DQS_DELAY_1_ENCODE(dll_dqs_delay_X);
+	mtdcr(ddrcfgd, val);
+	debug("DDR0_18=0x%08lx\n", val);
+
+	/* dll_dqs_delay_5 to dll_dqs_delay_8 */
+	mtdcr(ddrcfga, DDR0_19);
+	val = (mfdcr(ddrcfgd) & ~DDR0_19_DLL_DQS_DELAY_X_MASK)
+		| DDR0_19_DLL_DQS_DELAY_8_ENCODE(dll_dqs_delay_X)
+		| DDR0_19_DLL_DQS_DELAY_7_ENCODE(dll_dqs_delay_X)
+		| DDR0_19_DLL_DQS_DELAY_6_ENCODE(dll_dqs_delay_X)
+		| DDR0_19_DLL_DQS_DELAY_5_ENCODE(dll_dqs_delay_X);
+	mtdcr(ddrcfgd, val);
+	debug("DDR0_19=0x%08lx\n", val);
+
+	/* -----------------------------------------------------------+
+	 * Assert 'start' parameter.
+	 * ----------------------------------------------------------*/
+	mtdcr(ddrcfga, DDR0_02);
+	val = (mfdcr(ddrcfgd) & ~DDR0_02_START_MASK) | DDR0_02_START_ON;
+	mtdcr(ddrcfgd, val);
+
+	ppcMsync();
+	ppcMbar();
+
+	/* -----------------------------------------------------------+
+	 * Wait for the DCC master delay line to finish calibration
+	 * ----------------------------------------------------------*/
+	if (wait_for_dlllock() != 0) {
+		printf("dlllock did not occur !!!\n");
+		hang();
+	}
+	ppcMsync();
+	ppcMbar();
+
+	if (wait_for_dram_init_complete() != 0) {
+		printf("dram init complete did not occur !!!\n");
+		hang();
+	}
+	udelay(100);  /* wait 100us to ensure init is really completed !!! */
+}
+#endif /* CONFIG_DDR_DATA_EYE */
+
 /*************************************************************************
  *
  * initdram -- 440EPx's DDR controller is a DENALI Core
@@ -30,8 +379,6 @@
 long int initdram (int board_type)
 {
 #if !defined(CONFIG_NAND_U_BOOT) || defined(CONFIG_NAND_SPL)
-	volatile ulong val;
-
 	mtsdram(DDR0_02, 0x00000000);
 
 	mtsdram(DDR0_00, 0x0000190A);
@@ -64,14 +411,15 @@ long int initdram (int board_type)
 	mtsdram(DDR0_44, 0x00000005);
 	mtsdram(DDR0_02, 0x00000001);
 
-	/*
-	 * Wait for DCC master delay line to finish calibration
-	 */
-	mfsdram(DDR0_17, val);
-	while (((val >> 8) & 0x000007f) == 0) {
-		mfsdram(DDR0_17, val);
-	}
+	wait_for_dlllock();
 #endif /* #ifndef CONFIG_NAND_U_BOOT */
 
+#ifdef CONFIG_DDR_DATA_EYE
+	/* -----------------------------------------------------------+
+	 * Perform data eye search if requested.
+	 * ----------------------------------------------------------*/
+	denali_core_search_data_eye(CFG_MBYTES_SDRAM << 20);
+#endif
+
 	return (CFG_MBYTES_SDRAM << 20);
 }
diff --git a/board/amcc/sequoia/sdram.h b/board/amcc/sequoia/sdram.h
new file mode 100644
index 0000000..48966cf
--- /dev/null
+++ b/board/amcc/sequoia/sdram.h
@@ -0,0 +1,508 @@
+/*
+ * (C) Copyright 2006
+ * Sylvie Gohl,             AMCC/IBM, gohl.sylvie@fr.ibm.com
+ * Jacqueline Pira-Ferriol, AMCC/IBM, jpira-ferriol@fr.ibm.com
+ * Thierry Roman,           AMCC/IBM, thierry_roman@fr.ibm.com
+ * Alain Saurel,            AMCC/IBM, alain.saurel@fr.ibm.com
+ * Robert Snyder,           AMCC/IBM, rob.snyder@fr.ibm.com
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _SPD_SDRAM_DENALI_H_
+#define _SPD_SDRAM_DENALI_H_
+
+#define ppcMsync	sync
+#define ppcMbar		eieio
+
+/* General definitions */
+#define MAX_SPD_BYTE        128         /* highest SPD byte # to read */
+#define DENALI_REG_NUMBER   45          /* 45 Regs in PPC440EPx Denali Core */
+#define SUPPORTED_DIMMS_NB  7           /* Number of supported DIMM modules types */
+#define SDRAM_NONE          0           /* No DIMM detected in Slot */
+#define MAXRANKS            2           /* 2 ranks maximum */
+
+/* Supported PLB Frequencies */
+#define PLB_FREQ_133MHZ     133333333
+#define PLB_FREQ_152MHZ     152000000
+#define PLB_FREQ_160MHZ     160000000
+#define PLB_FREQ_166MHZ     166666666
+
+/* Denali Core Registers */
+#define SDRAM_DCR_BASE 0x10
+
+#define DDR_DCR_BASE 0x10
+#define ddrcfga  (DDR_DCR_BASE+0x0)   /* DDR configuration address reg */
+#define ddrcfgd  (DDR_DCR_BASE+0x1)   /* DDR configuration data reg    */
+
+/*-----------------------------------------------------------------------------+
+  | Values for ddrcfga register - indirect addressing of these regs
+  +-----------------------------------------------------------------------------*/
+
+#define DDR0_00                         0x00
+#define DDR0_00_INT_ACK_MASK              0x7F000000 /* Write only */
+#define DDR0_00_INT_ACK_ALL               0x7F000000
+#define DDR0_00_INT_ACK_ENCODE(n)           ((((unsigned long)(n))&0x7F)<<24)
+#define DDR0_00_INT_ACK_DECODE(n)           ((((unsigned long)(n))>>24)&0x7F)
+/* Status */
+#define DDR0_00_INT_STATUS_MASK           0x00FF0000 /* Read only */
+/* Bit0. A single access outside the defined PHYSICAL memory space detected. */
+#define DDR0_00_INT_STATUS_BIT0           0x00010000
+/* Bit1. Multiple accesses outside the defined PHYSICAL memory space detected. */
+#define DDR0_00_INT_STATUS_BIT1           0x00020000
+/* Bit2. Single correctable ECC event detected */
+#define DDR0_00_INT_STATUS_BIT2           0x00040000
+/* Bit3. Multiple correctable ECC events detected. */
+#define DDR0_00_INT_STATUS_BIT3           0x00080000
+/* Bit4. Single uncorrectable ECC event detected. */
+#define DDR0_00_INT_STATUS_BIT4           0x00100000
+/* Bit5. Multiple uncorrectable ECC events detected. */
+#define DDR0_00_INT_STATUS_BIT5           0x00200000
+/* Bit6. DRAM initialization complete. */
+#define DDR0_00_INT_STATUS_BIT6           0x00400000
+/* Bit7. Logical OR of all lower bits. */
+#define DDR0_00_INT_STATUS_BIT7           0x00800000
+
+#define DDR0_00_INT_STATUS_ENCODE(n)        ((((unsigned long)(n))&0xFF)<<16)
+#define DDR0_00_INT_STATUS_DECODE(n)        ((((unsigned long)(n))>>16)&0xFF)
+#define DDR0_00_DLL_INCREMENT_MASK        0x00007F00
+#define DDR0_00_DLL_INCREMENT_ENCODE(n)     ((((unsigned long)(n))&0x7F)<<8)
+#define DDR0_00_DLL_INCREMENT_DECODE(n)     ((((unsigned long)(n))>>8)&0x7F)
+#define DDR0_00_DLL_START_POINT_MASK      0x0000007F
+#define DDR0_00_DLL_START_POINT_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<0)
+#define DDR0_00_DLL_START_POINT_DECODE(n)   ((((unsigned long)(n))>>0)&0x7F)
+
+
+
+#define DDR0_01                         0x01
+#define DDR0_01_PLB0_DB_CS_LOWER_MASK     0x1F000000
+#define DDR0_01_PLB0_DB_CS_LOWER_ENCODE(n)  ((((unsigned long)(n))&0x1F)<<24)
+#define DDR0_01_PLB0_DB_CS_LOWER_DECODE(n)  ((((unsigned long)(n))>>24)&0x1F)
+#define DDR0_01_PLB0_DB_CS_UPPER_MASK     0x001F0000
+#define DDR0_01_PLB0_DB_CS_UPPER_ENCODE(n)  ((((unsigned long)(n))&0x1F)<<16)
+#define DDR0_01_PLB0_DB_CS_UPPER_DECODE(n)  ((((unsigned long)(n))>>16)&0x1F)
+#define DDR0_01_OUT_OF_RANGE_TYPE_MASK    0x00000700 /* Read only */
+#define DDR0_01_OUT_OF_RANGE_TYPE_ENCODE(n)               ((((unsigned long)(n))&0x7)<<8)
+#define DDR0_01_OUT_OF_RANGE_TYPE_DECODE(n)               ((((unsigned long)(n))>>8)&0x7)
+#define DDR0_01_INT_MASK_MASK             0x000000FF
+#define DDR0_01_INT_MASK_ENCODE(n)          ((((unsigned long)(n))&0xFF)<<0)
+#define DDR0_01_INT_MASK_DECODE(n)          ((((unsigned long)(n))>>0)&0xFF)
+#define DDR0_01_INT_MASK_ALL_ON           0x000000FF
+#define DDR0_01_INT_MASK_ALL_OFF          0x00000000
+
+#define DDR0_02                         0x02
+#define DDR0_02_MAX_CS_REG_MASK           0x02000000 /* Read only */
+#define DDR0_02_MAX_CS_REG_ENCODE(n)        ((((unsigned long)(n))&0x2)<<24)
+#define DDR0_02_MAX_CS_REG_DECODE(n)        ((((unsigned long)(n))>>24)&0x2)
+#define DDR0_02_MAX_COL_REG_MASK          0x000F0000 /* Read only */
+#define DDR0_02_MAX_COL_REG_ENCODE(n)       ((((unsigned long)(n))&0xF)<<16)
+#define DDR0_02_MAX_COL_REG_DECODE(n)       ((((unsigned long)(n))>>16)&0xF)
+#define DDR0_02_MAX_ROW_REG_MASK          0x00000F00 /* Read only */
+#define DDR0_02_MAX_ROW_REG_ENCODE(n)       ((((unsigned long)(n))&0xF)<<8)
+#define DDR0_02_MAX_ROW_REG_DECODE(n)       ((((unsigned long)(n))>>8)&0xF)
+#define DDR0_02_START_MASK                0x00000001
+#define DDR0_02_START_ENCODE(n)             ((((unsigned long)(n))&0x1)<<0)
+#define DDR0_02_START_DECODE(n)             ((((unsigned long)(n))>>0)&0x1)
+#define DDR0_02_START_OFF                 0x00000000
+#define DDR0_02_START_ON                  0x00000001
+
+#define DDR0_03                         0x03
+#define DDR0_03_BSTLEN_MASK               0x07000000
+#define DDR0_03_BSTLEN_ENCODE(n)            ((((unsigned long)(n))&0x7)<<24)
+#define DDR0_03_BSTLEN_DECODE(n)            ((((unsigned long)(n))>>24)&0x7)
+#define DDR0_03_CASLAT_MASK               0x00070000
+#define DDR0_03_CASLAT_ENCODE(n)            ((((unsigned long)(n))&0x7)<<16)
+#define DDR0_03_CASLAT_DECODE(n)            ((((unsigned long)(n))>>16)&0x7)
+#define DDR0_03_CASLAT_LIN_MASK           0x00000F00
+#define DDR0_03_CASLAT_LIN_ENCODE(n)        ((((unsigned long)(n))&0xF)<<8)
+#define DDR0_03_CASLAT_LIN_DECODE(n)        ((((unsigned long)(n))>>8)&0xF)
+#define DDR0_03_INITAREF_MASK             0x0000000F
+#define DDR0_03_INITAREF_ENCODE(n)          ((((unsigned long)(n))&0xF)<<0)
+#define DDR0_03_INITAREF_DECODE(n)          ((((unsigned long)(n))>>0)&0xF)
+
+#define DDR0_04                         0x04
+#define DDR0_04_TRC_MASK                  0x1F000000
+#define DDR0_04_TRC_ENCODE(n)               ((((unsigned long)(n))&0x1F)<<24)
+#define DDR0_04_TRC_DECODE(n)               ((((unsigned long)(n))>>24)&0x1F)
+#define DDR0_04_TRRD_MASK                 0x00070000
+#define DDR0_04_TRRD_ENCODE(n)              ((((unsigned long)(n))&0x7)<<16)
+#define DDR0_04_TRRD_DECODE(n)              ((((unsigned long)(n))>>16)&0x7)
+#define DDR0_04_TRTP_MASK                 0x00000700
+#define DDR0_04_TRTP_ENCODE(n)              ((((unsigned long)(n))&0x7)<<8)
+#define DDR0_04_TRTP_DECODE(n)              ((((unsigned long)(n))>>8)&0x7)
+
+#define DDR0_05                         0x05
+#define DDR0_05_TMRD_MASK                 0x1F000000
+#define DDR0_05_TMRD_ENCODE(n)              ((((unsigned long)(n))&0x1F)<<24)
+#define DDR0_05_TMRD_DECODE(n)              ((((unsigned long)(n))>>24)&0x1F)
+#define DDR0_05_TEMRS_MASK                0x00070000
+#define DDR0_05_TEMRS_ENCODE(n)             ((((unsigned long)(n))&0x7)<<16)
+#define DDR0_05_TEMRS_DECODE(n)             ((((unsigned long)(n))>>16)&0x7)
+#define DDR0_05_TRP_MASK                  0x00000F00
+#define DDR0_05_TRP_ENCODE(n)               ((((unsigned long)(n))&0xF)<<8)
+#define DDR0_05_TRP_DECODE(n)               ((((unsigned long)(n))>>8)&0xF)
+#define DDR0_05_TRAS_MIN_MASK             0x000000FF
+#define DDR0_05_TRAS_MIN_ENCODE(n)          ((((unsigned long)(n))&0xFF)<<0)
+#define DDR0_05_TRAS_MIN_DECODE(n)          ((((unsigned long)(n))>>0)&0xFF)
+
+#define DDR0_06                         0x06
+#define DDR0_06_WRITEINTERP_MASK          0x01000000
+#define DDR0_06_WRITEINTERP_ENCODE(n)       ((((unsigned long)(n))&0x1)<<24)
+#define DDR0_06_WRITEINTERP_DECODE(n)       ((((unsigned long)(n))>>24)&0x1)
+#define DDR0_06_TWTR_MASK                 0x00070000
+#define DDR0_06_TWTR_ENCODE(n)              ((((unsigned long)(n))&0x7)<<16)
+#define DDR0_06_TWTR_DECODE(n)              ((((unsigned long)(n))>>16)&0x7)
+#define DDR0_06_TDLL_MASK                 0x0000FF00
+#define DDR0_06_TDLL_ENCODE(n)              ((((unsigned long)(n))&0xFF)<<8)
+#define DDR0_06_TDLL_DECODE(n)              ((((unsigned long)(n))>>8)&0xFF)
+#define DDR0_06_TRFC_MASK                 0x0000007F
+#define DDR0_06_TRFC_ENCODE(n)              ((((unsigned long)(n))&0x7F)<<0)
+#define DDR0_06_TRFC_DECODE(n)              ((((unsigned long)(n))>>0)&0x7F)
+
+#define DDR0_07                         0x07
+#define DDR0_07_NO_CMD_INIT_MASK          0x01000000
+#define DDR0_07_NO_CMD_INIT_ENCODE(n)       ((((unsigned long)(n))&0x1)<<24)
+#define DDR0_07_NO_CMD_INIT_DECODE(n)       ((((unsigned long)(n))>>24)&0x1)
+#define DDR0_07_TFAW_MASK                 0x001F0000
+#define DDR0_07_TFAW_ENCODE(n)              ((((unsigned long)(n))&0x1F)<<16)
+#define DDR0_07_TFAW_DECODE(n)              ((((unsigned long)(n))>>16)&0x1F)
+#define DDR0_07_AUTO_REFRESH_MODE_MASK    0x00000100
+#define DDR0_07_AUTO_REFRESH_MODE_ENCODE(n) ((((unsigned long)(n))&0x1)<<8)
+#define DDR0_07_AUTO_REFRESH_MODE_DECODE(n) ((((unsigned long)(n))>>8)&0x1)
+#define DDR0_07_AREFRESH_MASK             0x00000001
+#define DDR0_07_AREFRESH_ENCODE(n)          ((((unsigned long)(n))&0x1)<<0)
+#define DDR0_07_AREFRESH_DECODE(n)          ((((unsigned long)(n))>>0)&0x1)
+
+#define DDR0_08                         0x08
+#define DDR0_08_WRLAT_MASK                0x07000000
+#define DDR0_08_WRLAT_ENCODE(n)             ((((unsigned long)(n))&0x7)<<24)
+#define DDR0_08_WRLAT_DECODE(n)             ((((unsigned long)(n))>>24)&0x7)
+#define DDR0_08_TCPD_MASK                 0x00FF0000
+#define DDR0_08_TCPD_ENCODE(n)              ((((unsigned long)(n))&0xFF)<<16)
+#define DDR0_08_TCPD_DECODE(n)              ((((unsigned long)(n))>>16)&0xFF)
+#define DDR0_08_DQS_N_EN_MASK             0x00000100
+#define DDR0_08_DQS_N_EN_ENCODE(n)          ((((unsigned long)(n))&0x1)<<8)
+#define DDR0_08_DQS_N_EN_DECODE(n)          ((((unsigned long)(n))>>8)&0x1)
+#define DDR0_08_DDRII_SDRAM_MODE_MASK     0x00000001
+#define DDR0_08_DDRII_ENCODE(n)             ((((unsigned long)(n))&0x1)<<0)
+#define DDR0_08_DDRII_DECODE(n)             ((((unsigned long)(n))>>0)&0x1)
+
+#define DDR0_09                         0x09
+#define DDR0_09_OCD_ADJUST_PDN_CS_0_MASK  0x1F000000
+#define DDR0_09_OCD_ADJUST_PDN_CS_0_ENCODE(n) ((((unsigned long)(n))&0x1F)<<24)
+#define DDR0_09_OCD_ADJUST_PDN_CS_0_DECODE(n) ((((unsigned long)(n))>>24)&0x1F)
+#define DDR0_09_RTT_0_MASK                0x00030000
+#define DDR0_09_RTT_0_ENCODE(n)             ((((unsigned long)(n))&0x3)<<16)
+#define DDR0_09_RTT_0_DECODE(n)             ((((unsigned long)(n))>>16)&0x3)
+#define DDR0_09_WR_DQS_SHIFT_BYPASS_MASK  0x00007F00
+#define DDR0_09_WR_DQS_SHIFT_BYPASS_ENCODE(n) ((((unsigned long)(n))&0x7F)<<8)
+#define DDR0_09_WR_DQS_SHIFT_BYPASS_DECODE(n) ((((unsigned long)(n))>>8)&0x7F)
+#define DDR0_09_WR_DQS_SHIFT_MASK         0x0000007F
+#define DDR0_09_WR_DQS_SHIFT_ENCODE(n)      ((((unsigned long)(n))&0x7F)<<0)
+#define DDR0_09_WR_DQS_SHIFT_DECODE(n)      ((((unsigned long)(n))>>0)&0x7F)
+
+#define DDR0_10                         0x0A
+#define DDR0_10_WRITE_MODEREG_MASK        0x00010000 /* Write only */
+#define DDR0_10_WRITE_MODEREG_ENCODE(n)     ((((unsigned long)(n))&0x1)<<16)
+#define DDR0_10_WRITE_MODEREG_DECODE(n)     ((((unsigned long)(n))>>16)&0x1)
+#define DDR0_10_CS_MAP_MASK               0x00000300
+#define DDR0_10_CS_MAP_NO_MEM             0x00000000
+#define DDR0_10_CS_MAP_RANK0_INSTALLED    0x00000100
+#define DDR0_10_CS_MAP_RANK1_INSTALLED    0x00000200
+#define DDR0_10_CS_MAP_ENCODE(n)            ((((unsigned long)(n))&0x3)<<8)
+#define DDR0_10_CS_MAP_DECODE(n)            ((((unsigned long)(n))>>8)&0x3)
+#define DDR0_10_OCD_ADJUST_PUP_CS_0_MASK  0x0000001F
+#define DDR0_10_OCD_ADJUST_PUP_CS_0_ENCODE(n) ((((unsigned long)(n))&0x1F)<<0)
+#define DDR0_10_OCD_ADJUST_PUP_CS_0_DECODE(n) ((((unsigned long)(n))>>0)&0x1F)
+
+#define DDR0_11                         0x0B
+#define DDR0_11_SREFRESH_MASK             0x01000000
+#define DDR0_11_SREFRESH_ENCODE(n)          ((((unsigned long)(n))&0x1)<<24)
+#define DDR0_11_SREFRESH_DECODE(n)          ((((unsigned long)(n))>>24)&0x1F)
+#define DDR0_11_TXSNR_MASK                0x00FF0000
+#define DDR0_11_TXSNR_ENCODE(n)             ((((unsigned long)(n))&0xFF)<<16)
+#define DDR0_11_TXSNR_DECODE(n)             ((((unsigned long)(n))>>16)&0xFF)
+#define DDR0_11_TXSR_MASK                 0x0000FF00
+#define DDR0_11_TXSR_ENCODE(n)              ((((unsigned long)(n))&0xFF)<<8)
+#define DDR0_11_TXSR_DECODE(n)              ((((unsigned long)(n))>>8)&0xFF)
+
+#define DDR0_12                         0x0C
+#define DDR0_12_TCKE_MASK                 0x0000007
+#define DDR0_12_TCKE_ENCODE(n)              ((((unsigned long)(n))&0x7)<<0)
+#define DDR0_12_TCKE_DECODE(n)              ((((unsigned long)(n))>>0)&0x7)
+
+#define DDR0_13                         0x0D
+
+#define DDR0_14                         0x0E
+#define DDR0_14_DLL_BYPASS_MODE_MASK      0x01000000
+#define DDR0_14_DLL_BYPASS_MODE_ENCODE(n)   ((((unsigned long)(n))&0x1)<<24)
+#define DDR0_14_DLL_BYPASS_MODE_DECODE(n)   ((((unsigned long)(n))>>24)&0x1)
+#define DDR0_14_REDUC_MASK                0x00010000
+#define DDR0_14_REDUC_64BITS              0x00000000
+#define DDR0_14_REDUC_32BITS              0x00010000
+#define DDR0_14_REDUC_ENCODE(n)             ((((unsigned long)(n))&0x1)<<16)
+#define DDR0_14_REDUC_DECODE(n)             ((((unsigned long)(n))>>16)&0x1)
+#define DDR0_14_REG_DIMM_ENABLE_MASK      0x00000100
+#define DDR0_14_REG_DIMM_ENABLE_ENCODE(n)   ((((unsigned long)(n))&0x1)<<8)
+#define DDR0_14_REG_DIMM_ENABLE_DECODE(n)   ((((unsigned long)(n))>>8)&0x1)
+
+#define DDR0_15                         0x0F
+
+#define DDR0_16                         0x10
+
+#define DDR0_17                         0x11
+#define DDR0_17_DLL_DQS_DELAY_0_MASK      0x7F000000
+#define DDR0_17_DLL_DQS_DELAY_0_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<24)
+#define DDR0_17_DLL_DQS_DELAY_0_DECODE(n)   ((((unsigned long)(n))>>24)&0x7F)
+#define DDR0_17_DLLLOCKREG_MASK           0x00010000 /* Read only */
+#define DDR0_17_DLLLOCKREG_LOCKED         0x00010000
+#define DDR0_17_DLLLOCKREG_UNLOCKED       0x00000000
+#define DDR0_17_DLLLOCKREG_ENCODE(n)        ((((unsigned long)(n))&0x1)<<16)
+#define DDR0_17_DLLLOCKREG_DECODE(n)        ((((unsigned long)(n))>>16)&0x1)
+#define DDR0_17_DLL_LOCK_MASK             0x00007F00 /* Read only */
+#define DDR0_17_DLL_LOCK_ENCODE(n)          ((((unsigned long)(n))&0x7F)<<8)
+#define DDR0_17_DLL_LOCK_DECODE(n)          ((((unsigned long)(n))>>8)&0x7F)
+
+#define DDR0_18                         0x12
+#define DDR0_18_DLL_DQS_DELAY_X_MASK      0x7F7F7F7F
+#define DDR0_18_DLL_DQS_DELAY_4_MASK      0x7F000000
+#define DDR0_18_DLL_DQS_DELAY_4_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<24)
+#define DDR0_18_DLL_DQS_DELAY_4_DECODE(n)   ((((unsigned long)(n))>>24)&0x7F)
+#define DDR0_18_DLL_DQS_DELAY_3_MASK      0x007F0000
+#define DDR0_18_DLL_DQS_DELAY_3_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<16)
+#define DDR0_18_DLL_DQS_DELAY_3_DECODE(n)   ((((unsigned long)(n))>>16)&0x7F)
+#define DDR0_18_DLL_DQS_DELAY_2_MASK      0x00007F00
+#define DDR0_18_DLL_DQS_DELAY_2_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<8)
+#define DDR0_18_DLL_DQS_DELAY_2_DECODE(n)   ((((unsigned long)(n))>>8)&0x7F)
+#define DDR0_18_DLL_DQS_DELAY_1_MASK      0x0000007F
+#define DDR0_18_DLL_DQS_DELAY_1_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<0)
+#define DDR0_18_DLL_DQS_DELAY_1_DECODE(n)   ((((unsigned long)(n))>>0)&0x7F)
+
+#define DDR0_19                         0x13
+#define DDR0_19_DLL_DQS_DELAY_X_MASK      0x7F7F7F7F
+#define DDR0_19_DLL_DQS_DELAY_8_MASK      0x7F000000
+#define DDR0_19_DLL_DQS_DELAY_8_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<24)
+#define DDR0_19_DLL_DQS_DELAY_8_DECODE(n)   ((((unsigned long)(n))>>24)&0x7F)
+#define DDR0_19_DLL_DQS_DELAY_7_MASK      0x007F0000
+#define DDR0_19_DLL_DQS_DELAY_7_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<16)
+#define DDR0_19_DLL_DQS_DELAY_7_DECODE(n)   ((((unsigned long)(n))>>16)&0x7F)
+#define DDR0_19_DLL_DQS_DELAY_6_MASK      0x00007F00
+#define DDR0_19_DLL_DQS_DELAY_6_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<8)
+#define DDR0_19_DLL_DQS_DELAY_6_DECODE(n)   ((((unsigned long)(n))>>8)&0x7F)
+#define DDR0_19_DLL_DQS_DELAY_5_MASK      0x0000007F
+#define DDR0_19_DLL_DQS_DELAY_5_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<0)
+#define DDR0_19_DLL_DQS_DELAY_5_DECODE(n)   ((((unsigned long)(n))>>0)&0x7F)
+
+#define DDR0_20                         0x14
+#define DDR0_20_DLL_DQS_BYPASS_3_MASK      0x7F000000
+#define DDR0_20_DLL_DQS_BYPASS_3_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<24)
+#define DDR0_20_DLL_DQS_BYPASS_3_DECODE(n)   ((((unsigned long)(n))>>24)&0x7F)
+#define DDR0_20_DLL_DQS_BYPASS_2_MASK      0x007F0000
+#define DDR0_20_DLL_DQS_BYPASS_2_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<16)
+#define DDR0_20_DLL_DQS_BYPASS_2_DECODE(n)   ((((unsigned long)(n))>>16)&0x7F)
+#define DDR0_20_DLL_DQS_BYPASS_1_MASK      0x00007F00
+#define DDR0_20_DLL_DQS_BYPASS_1_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<8)
+#define DDR0_20_DLL_DQS_BYPASS_1_DECODE(n)   ((((unsigned long)(n))>>8)&0x7F)
+#define DDR0_20_DLL_DQS_BYPASS_0_MASK      0x0000007F
+#define DDR0_20_DLL_DQS_BYPASS_0_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<0)
+#define DDR0_20_DLL_DQS_BYPASS_0_DECODE(n)   ((((unsigned long)(n))>>0)&0x7F)
+
+#define DDR0_21                         0x15
+#define DDR0_21_DLL_DQS_BYPASS_7_MASK      0x7F000000
+#define DDR0_21_DLL_DQS_BYPASS_7_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<24)
+#define DDR0_21_DLL_DQS_BYPASS_7_DECODE(n)   ((((unsigned long)(n))>>24)&0x7F)
+#define DDR0_21_DLL_DQS_BYPASS_6_MASK      0x007F0000
+#define DDR0_21_DLL_DQS_BYPASS_6_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<16)
+#define DDR0_21_DLL_DQS_BYPASS_6_DECODE(n)   ((((unsigned long)(n))>>16)&0x7F)
+#define DDR0_21_DLL_DQS_BYPASS_5_MASK      0x00007F00
+#define DDR0_21_DLL_DQS_BYPASS_5_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<8)
+#define DDR0_21_DLL_DQS_BYPASS_5_DECODE(n)   ((((unsigned long)(n))>>8)&0x7F)
+#define DDR0_21_DLL_DQS_BYPASS_4_MASK      0x0000007F
+#define DDR0_21_DLL_DQS_BYPASS_4_ENCODE(n)   ((((unsigned long)(n))&0x7F)<<0)
+#define DDR0_21_DLL_DQS_BYPASS_4_DECODE(n)   ((((unsigned long)(n))>>0)&0x7F)
+
+#define DDR0_22                         0x16
+/* ECC */
+#define DDR0_22_CTRL_RAW_MASK             0x03000000
+#define DDR0_22_CTRL_RAW_ECC_DISABLE      0x00000000 /* ECC not being used */
+#define DDR0_22_CTRL_RAW_ECC_CHECK_ONLY   0x01000000 /* ECC checking is on, but no attempts to correct*/
+#define DDR0_22_CTRL_RAW_NO_ECC_RAM       0x02000000 /* No ECC RAM storage available */
+#define DDR0_22_CTRL_RAW_ECC_ENABLE       0x03000000 /* ECC checking and correcting on */
+#define DDR0_22_CTRL_RAW_ENCODE(n)          ((((unsigned long)(n))&0x3)<<24)
+#define DDR0_22_CTRL_RAW_DECODE(n)          ((((unsigned long)(n))>>24)&0x3)
+
+#define DDR0_22_DQS_OUT_SHIFT_BYPASS_MASK 0x007F0000
+#define DDR0_22_DQS_OUT_SHIFT_BYPASS_ENCODE(n) ((((unsigned long)(n))&0x7F)<<16)
+#define DDR0_22_DQS_OUT_SHIFT_BYPASS_DECODE(n) ((((unsigned long)(n))>>16)&0x7F)
+#define DDR0_22_DQS_OUT_SHIFT_MASK        0x00007F00
+#define DDR0_22_DQS_OUT_SHIFT_ENCODE(n)     ((((unsigned long)(n))&0x7F)<<8)
+#define DDR0_22_DQS_OUT_SHIFT_DECODE(n)     ((((unsigned long)(n))>>8)&0x7F)
+#define DDR0_22_DLL_DQS_BYPASS_8_MASK     0x0000007F
+#define DDR0_22_DLL_DQS_BYPASS_8_ENCODE(n)  ((((unsigned long)(n))&0x7F)<<0)
+#define DDR0_22_DLL_DQS_BYPASS_8_DECODE(n)  ((((unsigned long)(n))>>0)&0x7F)
+
+
+
+
+#define DDR0_23                         0x17
+#define DDR0_23_ODT_RD_MAP_CS0_MASK       0x03000000
+#define DDR0_23_ODT_RD_MAP_CS0_ENCODE(n)   ((((unsigned long)(n))&0x3)<<24)
+#define DDR0_23_ODT_RD_MAP_CS0_DECODE(n)   ((((unsigned long)(n))>>24)&0x3)
+#define DDR0_23_ECC_C_SYND_MASK           0x00FF0000 /* Read only */
+#define DDR0_23_ECC_C_SYND_ENCODE(n)        ((((unsigned long)(n))&0xFF)<<16)
+#define DDR0_23_ECC_C_SYND_DECODE(n)        ((((unsigned long)(n))>>16)&0xFF)
+#define DDR0_23_ECC_U_SYND_MASK           0x0000FF00 /* Read only */
+#define DDR0_23_ECC_U_SYND_ENCODE(n)        ((((unsigned long)(n))&0xFF)<<8)
+#define DDR0_23_ECC_U_SYND_DECODE(n)        ((((unsigned long)(n))>>8)&0xFF)
+#define DDR0_23_FWC_MASK                  0x00000001 /* Write only */
+#define DDR0_23_FWC_ENCODE(n)               ((((unsigned long)(n))&0x1)<<0)
+#define DDR0_23_FWC_DECODE(n)               ((((unsigned long)(n))>>0)&0x1)
+
+#define DDR0_24                         0x18
+#define DDR0_24_RTT_PAD_TERMINATION_MASK  0x03000000
+#define DDR0_24_RTT_PAD_TERMINATION_ENCODE(n) ((((unsigned long)(n))&0x3)<<24)
+#define DDR0_24_RTT_PAD_TERMINATION_DECODE(n) ((((unsigned long)(n))>>24)&0x3)
+#define DDR0_24_ODT_WR_MAP_CS1_MASK       0x00030000
+#define DDR0_24_ODT_WR_MAP_CS1_ENCODE(n)    ((((unsigned long)(n))&0x3)<<16)
+#define DDR0_24_ODT_WR_MAP_CS1_DECODE(n)    ((((unsigned long)(n))>>16)&0x3)
+#define DDR0_24_ODT_RD_MAP_CS1_MASK       0x00000300
+#define DDR0_24_ODT_RD_MAP_CS1_ENCODE(n)    ((((unsigned long)(n))&0x3)<<8)
+#define DDR0_24_ODT_RD_MAP_CS1_DECODE(n)    ((((unsigned long)(n))>>8)&0x3)
+#define DDR0_24_ODT_WR_MAP_CS0_MASK       0x00000003
+#define DDR0_24_ODT_WR_MAP_CS0_ENCODE(n)    ((((unsigned long)(n))&0x3)<<0)
+#define DDR0_24_ODT_WR_MAP_CS0_DECODE(n)    ((((unsigned long)(n))>>0)&0x3)
+
+#define DDR0_25                         0x19
+#define DDR0_25_VERSION_MASK              0xFFFF0000 /* Read only */
+#define DDR0_25_VERSION_ENCODE(n)           ((((unsigned long)(n))&0xFFFF)<<16)
+#define DDR0_25_VERSION_DECODE(n)           ((((unsigned long)(n))>>16)&0xFFFF)
+#define DDR0_25_OUT_OF_RANGE_LENGTH_MASK  0x000003FF /* Read only */
+#define DDR0_25_OUT_OF_RANGE_LENGTH_ENCODE(n) ((((unsigned long)(n))&0x3FF)<<0)
+#define DDR0_25_OUT_OF_RANGE_LENGTH_DECODE(n) ((((unsigned long)(n))>>0)&0x3FF)
+
+#define DDR0_26                         0x1A
+#define DDR0_26_TRAS_MAX_MASK             0xFFFF0000
+#define DDR0_26_TRAS_MAX_ENCODE(n)          ((((unsigned long)(n))&0xFFFF)<<16)
+#define DDR0_26_TRAS_MAX_DECODE(n)          ((((unsigned long)(n))>>16)&0xFFFF)
+#define DDR0_26_TREF_MASK                 0x00003FFF
+#define DDR0_26_TREF_ENCODE(n)              ((((unsigned long)(n))&0x3FF)<<0)
+#define DDR0_26_TREF_DECODE(n)              ((((unsigned long)(n))>>0)&0x3FF)
+
+#define DDR0_27                         0x1B
+#define DDR0_27_EMRS_DATA_MASK            0x3FFF0000
+#define DDR0_27_EMRS_DATA_ENCODE(n)         ((((unsigned long)(n))&0x3FFF)<<16)
+#define DDR0_27_EMRS_DATA_DECODE(n)         ((((unsigned long)(n))>>16)&0x3FFF)
+#define DDR0_27_TINIT_MASK                0x0000FFFF
+#define DDR0_27_TINIT_ENCODE(n)             ((((unsigned long)(n))&0xFFFF)<<0)
+#define DDR0_27_TINIT_DECODE(n)             ((((unsigned long)(n))>>0)&0xFFFF)
+
+#define DDR0_28                         0x1C
+#define DDR0_28_EMRS3_DATA_MASK           0x3FFF0000
+#define DDR0_28_EMRS3_DATA_ENCODE(n)        ((((unsigned long)(n))&0x3FFF)<<16)
+#define DDR0_28_EMRS3_DATA_DECODE(n)        ((((unsigned long)(n))>>16)&0x3FFF)
+#define DDR0_28_EMRS2_DATA_MASK           0x00003FFF
+#define DDR0_28_EMRS2_DATA_ENCODE(n)        ((((unsigned long)(n))&0x3FFF)<<0)
+#define DDR0_28_EMRS2_DATA_DECODE(n)        ((((unsigned long)(n))>>0)&0x3FFF)
+
+#define DDR0_29                         0x1D
+
+#define DDR0_30                         0x1E
+
+#define DDR0_31                         0x1F
+#define DDR0_31_XOR_CHECK_BITS_MASK       0x0000FFFF
+#define DDR0_31_XOR_CHECK_BITS_ENCODE(n)    ((((unsigned long)(n))&0xFFFF)<<0)
+#define DDR0_31_XOR_CHECK_BITS_DECODE(n)    ((((unsigned long)(n))>>0)&0xFFFF)
+
+#define DDR0_32                         0x20
+#define DDR0_32_OUT_OF_RANGE_ADDR_MASK    0xFFFFFFFF /* Read only */
+#define DDR0_32_OUT_OF_RANGE_ADDR_ENCODE(n) ((((unsigned long)(n))&0xFFFFFFFF)<<0)
+#define DDR0_32_OUT_OF_RANGE_ADDR_DECODE(n) ((((unsigned long)(n))>>0)&0xFFFFFFFF)
+
+#define DDR0_33                         0x21
+#define DDR0_33_OUT_OF_RANGE_ADDR_MASK    0x00000001 /* Read only */
+#define DDR0_33_OUT_OF_RANGE_ADDR_ENCODE(n) ((((unsigned long)(n))&0x1)<<0)
+#define DDR0_33_OUT_OF_RANGE_ADDR_DECODE(n)               ((((unsigned long)(n))>>0)&0x1)
+
+#define DDR0_34                         0x22
+#define DDR0_34_ECC_U_ADDR_MASK           0xFFFFFFFF /* Read only */
+#define DDR0_34_ECC_U_ADDR_ENCODE(n)        ((((unsigned long)(n))&0xFFFFFFFF)<<0)
+#define DDR0_34_ECC_U_ADDR_DECODE(n)        ((((unsigned long)(n))>>0)&0xFFFFFFFF)
+
+#define DDR0_35                         0x23
+#define DDR0_35_ECC_U_ADDR_MASK           0x00000001 /* Read only */
+#define DDR0_35_ECC_U_ADDR_ENCODE(n)        ((((unsigned long)(n))&0x1)<<0)
+#define DDR0_35_ECC_U_ADDR_DECODE(n)        ((((unsigned long)(n))>>0)&0x1)
+
+#define DDR0_36                         0x24
+#define DDR0_36_ECC_U_DATA_MASK           0xFFFFFFFF /* Read only */
+#define DDR0_36_ECC_U_DATA_ENCODE(n)        ((((unsigned long)(n))&0xFFFFFFFF)<<0)
+#define DDR0_36_ECC_U_DATA_DECODE(n)        ((((unsigned long)(n))>>0)&0xFFFFFFFF)
+
+#define DDR0_37                         0x25
+#define DDR0_37_ECC_U_DATA_MASK           0xFFFFFFFF /* Read only */
+#define DDR0_37_ECC_U_DATA_ENCODE(n)        ((((unsigned long)(n))&0xFFFFFFFF)<<0)
+#define DDR0_37_ECC_U_DATA_DECODE(n)        ((((unsigned long)(n))>>0)&0xFFFFFFFF)
+
+#define DDR0_38                         0x26
+#define DDR0_38_ECC_C_ADDR_MASK           0xFFFFFFFF /* Read only */
+#define DDR0_38_ECC_C_ADDR_ENCODE(n)        ((((unsigned long)(n))&0xFFFFFFFF)<<0)
+#define DDR0_38_ECC_C_ADDR_DECODE(n)        ((((unsigned long)(n))>>0)&0xFFFFFFFF)
+
+#define DDR0_39                         0x27
+#define DDR0_39_ECC_C_ADDR_MASK           0x00000001 /* Read only */
+#define DDR0_39_ECC_C_ADDR_ENCODE(n)        ((((unsigned long)(n))&0x1)<<0)
+#define DDR0_39_ECC_C_ADDR_DECODE(n)        ((((unsigned long)(n))>>0)&0x1)
+
+#define DDR0_40                         0x28
+#define DDR0_40_ECC_C_DATA_MASK           0xFFFFFFFF /* Read only */
+#define DDR0_40_ECC_C_DATA_ENCODE(n)        ((((unsigned long)(n))&0xFFFFFFFF)<<0)
+#define DDR0_40_ECC_C_DATA_DECODE(n)        ((((unsigned long)(n))>>0)&0xFFFFFFFF)
+
+#define DDR0_41                         0x29
+#define DDR0_41_ECC_C_DATA_MASK           0xFFFFFFFF /* Read only */
+#define DDR0_41_ECC_C_DATA_ENCODE(n)        ((((unsigned long)(n))&0xFFFFFFFF)<<0)
+#define DDR0_41_ECC_C_DATA_DECODE(n)        ((((unsigned long)(n))>>0)&0xFFFFFFFF)
+
+#define DDR0_42                         0x2A
+#define DDR0_42_ADDR_PINS_MASK            0x07000000
+#define DDR0_42_ADDR_PINS_ENCODE(n)         ((((unsigned long)(n))&0x7)<<24)
+#define DDR0_42_ADDR_PINS_DECODE(n)         ((((unsigned long)(n))>>24)&0x7)
+#define DDR0_42_CASLAT_LIN_GATE_MASK      0x0000000F
+#define DDR0_42_CASLAT_LIN_GATE_ENCODE(n)   ((((unsigned long)(n))&0xF)<<0)
+#define DDR0_42_CASLAT_LIN_GATE_DECODE(n)   ((((unsigned long)(n))>>0)&0xF)
+
+#define DDR0_43                         0x2B
+#define DDR0_43_TWR_MASK                  0x07000000
+#define DDR0_43_TWR_ENCODE(n)               ((((unsigned long)(n))&0x7)<<24)
+#define DDR0_43_TWR_DECODE(n)               ((((unsigned long)(n))>>24)&0x7)
+#define DDR0_43_APREBIT_MASK              0x000F0000
+#define DDR0_43_APREBIT_ENCODE(n)           ((((unsigned long)(n))&0xF)<<16)
+#define DDR0_43_APREBIT_DECODE(n)           ((((unsigned long)(n))>>16)&0xF)
+#define DDR0_43_COLUMN_SIZE_MASK          0x00000700
+#define DDR0_43_COLUMN_SIZE_ENCODE(n)       ((((unsigned long)(n))&0x7)<<8)
+#define DDR0_43_COLUMN_SIZE_DECODE(n)       ((((unsigned long)(n))>>8)&0x7)
+#define DDR0_43_EIGHT_BANK_MODE_MASK      0x00000001
+#define DDR0_43_EIGHT_BANK_MODE_8_BANKS     0x00000001
+#define DDR0_43_EIGHT_BANK_MODE_4_BANKS     0x00000000
+#define DDR0_43_EIGHT_BANK_MODE_ENCODE(n)   ((((unsigned long)(n))&0x1)<<0)
+#define DDR0_43_EIGHT_BANK_MODE_DECODE(n)   ((((unsigned long)(n))>>0)&0x1)
+
+#define DDR0_44                         0x2C
+#define DDR0_44_TRCD_MASK                 0x000000FF
+#define DDR0_44_TRCD_ENCODE(n)              ((((unsigned long)(n))&0xFF)<<0)
+#define DDR0_44_TRCD_DECODE(n)              ((((unsigned long)(n))>>0)&0xFF)
+
+#endif /* _SPD_SDRAM_DENALI_H_ */
diff --git a/cpu/ppc4xx/cpu_init.c b/cpu/ppc4xx/cpu_init.c
index 4b746b0..db0559b 100644
--- a/cpu/ppc4xx/cpu_init.c
+++ b/cpu/ppc4xx/cpu_init.c
@@ -31,9 +31,6 @@
 DECLARE_GLOBAL_DATA_PTR;
 #endif
 
-
-#define mtebc(reg, data)  mtdcr(ebccfga,reg);mtdcr(ebccfgd,data)
-
 #ifdef CFG_INIT_DCACHE_CS
 # if (CFG_INIT_DCACHE_CS == 0)
 #  define PBxAP pb0ap
diff --git a/include/configs/sequoia.h b/include/configs/sequoia.h
index 00b9222..e7f0108 100644
--- a/include/configs/sequoia.h
+++ b/include/configs/sequoia.h
@@ -188,7 +188,10 @@
 /*-----------------------------------------------------------------------
  * DDR SDRAM
  *----------------------------------------------------------------------*/
-#define CFG_MBYTES_SDRAM        (256)    /* 256MB			*/
+#define CFG_MBYTES_SDRAM        (256)		/* 256MB			*/
+#if !defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
+#define CONFIG_DDR_DATA_EYE			/* use DDR2 optimization	*/
+#endif
 
 /*-----------------------------------------------------------------------
  * I2C
diff --git a/nand_spl/board/amcc/sequoia/Makefile b/nand_spl/board/amcc/sequoia/Makefile
index a71f583..b42da8c 100644
--- a/nand_spl/board/amcc/sequoia/Makefile
+++ b/nand_spl/board/amcc/sequoia/Makefile
@@ -76,7 +76,9 @@ $(obj)init.S:
 
 $(obj)sdram.c:
 	@rm -f $(obj)sdram.c
+	@rm -f $(obj)sdram.h
 	ln -s $(SRCTREE)/board/amcc/sequoia/sdram.c $(obj)sdram.c
+	ln -s $(SRCTREE)/board/amcc/sequoia/sdram.h $(obj)sdram.h
 
 # from nand_spl directory
 $(obj)nand_boot.c: