ppc4xx: Merge PPC4xx DDR and DDR2 ECC handling

This patch merges the ECC handling (ECC parity byte writing) into one
file (ecc.c) for all PPC4xx SDRAM controllers except for PPC440EPx/GRx.
This exception is because only those PPC's use the completely different
Denali SDRAM controller core.

Previously we had two routines to generate/write the ECC parity bytes.
With this patch we now only have one core function left.

Tested on Kilauea (no ECC) and Katmai (with and without ECC).

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Felix Radensky <felix@embedded-sol.com>
Cc: Grant Erickson <gerickson@nuovations.com>
Cc: Pieter Voorthuijsen <pv@prodrive.nl>

4 files changed, 169 insertions, 250 deletions

diff --git a/cpu/ppc4xx/44x_spd_ddr2.c b/cpu/ppc4xx/44x_spd_ddr2.c
index 736e3cbe9b..3975306400 100644
--- a/cpu/ppc4xx/44x_spd_ddr2.c
+++ b/cpu/ppc4xx/44x_spd_ddr2.c
@@ -9,7 +9,7 @@
  * Copyright (c) 2008 Nuovation System Designs, LLC
  *   Grant Erickson <gerickson@nuovations.com>
 
- * (C) Copyright 2007-2008
+ * (C) Copyright 2007-2009
  * Stefan Roese, DENX Software Engineering, sr@denx.de.
  *
  * COPYRIGHT   AMCC   CORPORATION 2004
@@ -48,6 +48,8 @@
 #include <asm/mmu.h>
 #include <asm/cache.h>
 
+#include "ecc.h"
+
 #if defined(CONFIG_SDRAM_PPC4xx_IBM_DDR2)
 
 #define PPC4xx_IBM_DDR2_DUMP_REGISTER(mnemonic)				\
@@ -93,24 +95,11 @@ void dcbz_area(u32 start_address, u32 num_bytes);
 
 #define MULDIV64(m1, m2, d)	(u32)(((u64)(m1) * (u64)(m2)) / (u64)(d))
 
-static unsigned long is_ecc_enabled(void);
-
-/*-----------------------------------------------------------------------------+
- * wait_ddr_idle
- *-----------------------------------------------------------------------------*/
-static void wait_ddr_idle(void)
-{
-	u32 val;
-
-	do {
-		mfsdram(SDRAM_MCSTAT, val);
-	} while ((val & SDRAM_MCSTAT_IDLE_MASK) == SDRAM_MCSTAT_IDLE_NOT);
-}
-
+#if !defined(CONFIG_NAND_SPL)
 /*-----------------------------------------------------------------------------+
  * sdram_memsize
  *-----------------------------------------------------------------------------*/
-static phys_size_t sdram_memsize(void)
+phys_size_t sdram_memsize(void)
 {
 	phys_size_t mem_size;
 	unsigned long mcopt2;
@@ -184,6 +173,18 @@ static phys_size_t sdram_memsize(void)
 }
 
 /*-----------------------------------------------------------------------------+
+ * is_ecc_enabled
+ *-----------------------------------------------------------------------------*/
+static unsigned long is_ecc_enabled(void)
+{
+	unsigned long val;
+
+	mfsdram(SDRAM_MCOPT1, val);
+
+	return SDRAM_MCOPT1_MCHK_CHK_DECODE(val);
+}
+
+/*-----------------------------------------------------------------------------+
  * board_add_ram_info
  *-----------------------------------------------------------------------------*/
 void board_add_ram_info(int use_default)
@@ -198,12 +199,11 @@ void board_add_ram_info(int use_default)
 
 	get_sys_info(&board_cfg);
 
-#if defined(CONFIG_440)
+#if defined(CONFIG_405EX)
+	val = board_cfg.freqPLB;
+#else
 	mfsdr(SDR0_DDR0, val);
 	val = MULDIV64((board_cfg.freqPLB), SDR0_DDR0_DDRM_DECODE(val), 1);
-#else
-	mfsdr(SDR0_SDSTP0, val);
-	val = MULDIV64((board_cfg.freqPLB), SDR0_SDSTP0_PLB2xDV0_DECODE(val), 1);
 #endif
 	printf(" enabled, %d MHz", (val * 2) / 1000000);
 
@@ -211,112 +211,7 @@ void board_add_ram_info(int use_default)
 	val = (val & SDRAM_MMODE_DCL_MASK) >> 4;
 	printf(", CL%d)", val);
 }
-
-#ifdef CONFIG_DDR_ECC
-/*-----------------------------------------------------------------------------+
- * program_ecc_addr.
- *-----------------------------------------------------------------------------*/
-static void program_ecc_addr(unsigned long start_address,
-			     unsigned long num_bytes,
-			     unsigned long tlb_word2_i_value)
-{
-	unsigned long current_address;
-	unsigned long end_address;
-	unsigned long address_increment;
-	unsigned long mcopt1;
-	char str[] = "ECC generation -";
-	char slash[] = "\\|/-\\|/-";
-	int loop = 0;
-	int loopi = 0;
-
-	current_address = start_address;
-	mfsdram(SDRAM_MCOPT1, mcopt1);
-	if ((mcopt1 & SDRAM_MCOPT1_MCHK_MASK) != SDRAM_MCOPT1_MCHK_NON) {
-		mtsdram(SDRAM_MCOPT1,
-			(mcopt1 & ~SDRAM_MCOPT1_MCHK_MASK) | SDRAM_MCOPT1_MCHK_GEN);
-		sync();
-		eieio();
-		wait_ddr_idle();
-
-		puts(str);
-
-#ifdef CONFIG_440
-		if (tlb_word2_i_value == TLB_WORD2_I_ENABLE) {
-#endif
-			/* ECC bit set method for non-cached memory */
-			if ((mcopt1 & SDRAM_MCOPT1_DMWD_MASK) == SDRAM_MCOPT1_DMWD_32)
-				address_increment = 4;
-			else
-				address_increment = 8;
-			end_address = current_address + num_bytes;
-
-			while (current_address < end_address) {
-				*((unsigned long *)current_address) = 0x00000000;
-				current_address += address_increment;
-
-				if ((loop++ % (2 << 20)) == 0) {
-					putc('\b');
-					putc(slash[loopi++ % 8]);
-				}
-			}
-#ifdef CONFIG_440
-		} else {
-			/* ECC bit set method for cached memory */
-			dcbz_area(start_address, num_bytes);
-			/* Write modified dcache lines back to memory */
-			clean_dcache_range(start_address, start_address + num_bytes);
-		}
-#endif /* CONFIG_440 */
-
-		blank_string(strlen(str));
-
-		sync();
-		eieio();
-		wait_ddr_idle();
-
-		/* clear ECC error repoting registers */
-		mtsdram(SDRAM_ECCCR, 0xffffffff);
-		mtdcr(0x4c, 0xffffffff);
-
-		mtsdram(SDRAM_MCOPT1,
-			(mcopt1 & ~SDRAM_MCOPT1_MCHK_MASK) | SDRAM_MCOPT1_MCHK_CHK_REP);
-		sync();
-		eieio();
-		wait_ddr_idle();
-	}
-}
-
-/*-----------------------------------------------------------------------------+
- * do_program_ecc.
- *-----------------------------------------------------------------------------*/
-static void do_program_ecc(unsigned long tlb_word2_i_value)
-{
-	unsigned long mcopt1;
-	unsigned long mcopt2;
-	unsigned long mcstat;
-	phys_size_t memsize = sdram_memsize();
-
-	if (memsize > CONFIG_MAX_MEM_MAPPED) {
-		printf("\nWarning: Can't enable ECC on systems with more than 2GB of SDRAM!\n");
-		return;
-	}
-
-	mfsdram(SDRAM_MCOPT1, mcopt1);
-	mfsdram(SDRAM_MCOPT2, mcopt2);
-
-	if ((mcopt1 & SDRAM_MCOPT1_MCHK_MASK) != SDRAM_MCOPT1_MCHK_NON) {
-		/* DDR controller must be enabled and not in self-refresh. */
-		mfsdram(SDRAM_MCSTAT, mcstat);
-		if (((mcopt2 & SDRAM_MCOPT2_DCEN_MASK) == SDRAM_MCOPT2_DCEN_ENABLE)
-		    && ((mcopt2 & SDRAM_MCOPT2_SREN_MASK) == SDRAM_MCOPT2_SREN_EXIT)
-		    && ((mcstat & (SDRAM_MCSTAT_MIC_MASK | SDRAM_MCSTAT_SRMS_MASK))
-			== (SDRAM_MCSTAT_MIC_COMP | SDRAM_MCSTAT_SRMS_NOT_SF))) {
-
-			program_ecc_addr(0, memsize, tlb_word2_i_value);
-		}
-	}
-}
-#endif /* CONFIG_DDR_ECC */
+#endif /* !CONFIG_NAND_SPL */
 
 #if defined(CONFIG_SPD_EEPROM)
 
@@ -439,7 +334,6 @@ typedef enum ddr_cas_id {
 /*-----------------------------------------------------------------------------+
  * Prototypes
  *-----------------------------------------------------------------------------*/
-static phys_size_t sdram_memsize(void);
 static void get_spd_info(unsigned long *dimm_populated,
 			 unsigned char *iic0_dimm_addr,
 			 unsigned long num_dimm_banks);
@@ -2405,25 +2299,6 @@ static void program_memory_queue(unsigned long *dimm_populated,
 #endif
 }
 
-/*-----------------------------------------------------------------------------+
- * is_ecc_enabled.
- *-----------------------------------------------------------------------------*/
-static unsigned long is_ecc_enabled(void)
-{
-	unsigned long dimm_num;
-	unsigned long ecc;
-	unsigned long val;
-
-	ecc = 0;
-	/* loop through all the DIMM slots on the board */
-	for (dimm_num = 0; dimm_num < MAXDIMMS; dimm_num++) {
-		mfsdram(SDRAM_MCOPT1, val);
-		ecc = max(ecc, SDRAM_MCOPT1_MCHK_CHK_DECODE(val));
-	}
-
-	return ecc;
-}
-
 #ifdef CONFIG_DDR_ECC
 /*-----------------------------------------------------------------------------+
  * program_ecc.
@@ -2989,21 +2864,6 @@ static void test(void)
 
 #else /* CONFIG_SPD_EEPROM */
 
-/*-----------------------------------------------------------------------------+
- * is_ecc_enabled
- *-----------------------------------------------------------------------------*/
-static unsigned long is_ecc_enabled(void)
-{
-	unsigned long ecc;
-	unsigned long val;
-
-	ecc = 0;
-	mfsdram(SDRAM_MCOPT1, val);
-	ecc = max(ecc, SDRAM_MCOPT1_MCHK_CHK_DECODE(val));
-
-	return ecc;
-}
-
 /*-----------------------------------------------------------------------------
  * Function:	initdram
  * Description: Configures the PPC4xx IBM DDR1/DDR2 SDRAM memory controller.
@@ -3225,18 +3085,6 @@ void mtdcr_any(u32 dcr, u32 val)
 	}
 }
 #endif /* defined(CONFIG_440) */
-
-void blank_string(int size)
-{
-	int i;
-
-	for (i = 0; i < size; i++)
-		putc('\b');
-	for (i = 0; i < size; i++)
-		putc(' ');
-	for (i = 0; i < size; i++)
-		putc('\b');
-}
 #endif /* !defined(CONFIG_NAND_U_BOOT) &&  !defined(CONFIG_NAND_SPL) */
 
 inline void ppc4xx_ibm_ddr2_register_dump(void)
diff --git a/cpu/ppc4xx/4xx_ibm_ddr2_autocalib.c b/cpu/ppc4xx/4xx_ibm_ddr2_autocalib.c
index 91bf582d6e..0283c91d84 100644
--- a/cpu/ppc4xx/4xx_ibm_ddr2_autocalib.c
+++ b/cpu/ppc4xx/4xx_ibm_ddr2_autocalib.c
@@ -42,6 +42,8 @@
 #include <asm/io.h>
 #include <asm/processor.h>
 
+#include "ecc.h"
+
 #if defined(CONFIG_PPC4xx_DDR_AUTOCALIBRATION)
 
 /*
@@ -177,7 +179,7 @@ static u32 *get_membase(int bxcr_num)
 
 static inline void ecc_clear_status_reg(void)
 {
-	mtsdram(SDRAM_ECCCR, 0xffffffff);
+	mtsdram(SDRAM_ECCES, 0xffffffff);
 #if defined(SDRAM_R0BAS)
 	mtdcr(SDRAM_ERRSTATLL, 0xffffffff);
 #endif
@@ -210,7 +212,7 @@ static int ecc_check_status_reg(void)
 	 * ecc error, then don't count
 	 * this as a passing value
 	 */
-	mfsdram(SDRAM_ECCCR, ecc_status);
+	mfsdram(SDRAM_ECCES, ecc_status);
 	if (ecc_status != 0x00000000) {
 		/* clear on error */
 		ecc_clear_status_reg();
diff --git a/cpu/ppc4xx/ecc.c b/cpu/ppc4xx/ecc.c
index 3f989e7f59..f105605459 100644
--- a/cpu/ppc4xx/ecc.c
+++ b/cpu/ppc4xx/ecc.c
@@ -2,7 +2,7 @@
  *    Copyright (c) 2008 Nuovation System Designs, LLC
  *      Grant Erickson <gerickson@nuovations.com>
  *
- *    (C) Copyright 2005-2007
+ *    (C) Copyright 2005-2009
  *    Stefan Roese, DENX Software Engineering, sr@denx.de.
  *
  *    (C) Copyright 2002
@@ -42,81 +42,144 @@
 #include <ppc_defs.h>
 #include <asm/processor.h>
 #include <asm/io.h>
+#include <asm/mmu.h>
+#include <asm/cache.h>
 
 #include "ecc.h"
 
 #if defined(CONFIG_SDRAM_PPC4xx_IBM_DDR) || \
     defined(CONFIG_SDRAM_PPC4xx_IBM_DDR2)
 #if defined(CONFIG_DDR_ECC) || defined(CONFIG_SDRAM_ECC)
+
+#if defined(CONFIG_405EX)
 /*
- *  void ecc_init()
- *
- *  Description:
- *    This routine initializes a range of DRAM ECC memory with known
- *    data and enables ECC checking.
- *
- *  TO DO:
- *    - Improve performance by utilizing cache.
- *    - Further generalize to make usable by other 4xx variants (e.g.
- *      440EPx, et al).
- *
- *  Input(s):
- *    start - A pointer to the start of memory covered by ECC requiring
- *	      initialization.
- *    size  - The size, in bytes, of the memory covered by ECC requiring
- *	      initialization.
- *
- *  Output(s):
- *    start - A pointer to the start of memory covered by ECC with
- *	      CONFIG_SYS_ECC_PATTERN written to all locations and ECC data
- *	      primed.
- *
- *  Returns:
- *    N/A
+ * Currently only 405EX uses 16bit data bus width as an alternative
+ * option to 32bit data width (SDRAM0_MCOPT1_WDTH)
  */
-void ecc_init(unsigned long * const start, unsigned long size)
+#define SDRAM_DATA_ALT_WIDTH	2
+#else
+#define SDRAM_DATA_ALT_WIDTH	8
+#endif
+
+static void wait_ddr_idle(void)
 {
-	const unsigned long pattern = CONFIG_SYS_ECC_PATTERN;
-	unsigned long * const end = (unsigned long * const)((long)start + size);
-	unsigned long * current = start;
+	u32 val;
+
+	do {
+		mfsdram(SDRAM_MCSTAT, val);
+	} while ((val & SDRAM_MCSTAT_IDLE_MASK) == SDRAM_MCSTAT_IDLE_NOT);
+}
+
+static void program_ecc_addr(unsigned long start_address,
+			     unsigned long num_bytes,
+			     unsigned long tlb_word2_i_value)
+{
+	unsigned long current_address;
+	unsigned long end_address;
+	unsigned long address_increment;
 	unsigned long mcopt1;
-	long increment;
+	char str[] = "ECC generation -";
+	char slash[] = "\\|/-\\|/-";
+	int loop = 0;
+	int loopi = 0;
 
-	if (start >= end)
-		return;
+	current_address = start_address;
+	mfsdram(SDRAM_MCOPT1, mcopt1);
+	if ((mcopt1 & SDRAM_MCOPT1_MCHK_MASK) != SDRAM_MCOPT1_MCHK_NON) {
+		mtsdram(SDRAM_MCOPT1,
+			(mcopt1 & ~SDRAM_MCOPT1_MCHK_MASK) | SDRAM_MCOPT1_MCHK_GEN);
+		sync();
+		eieio();
+		wait_ddr_idle();
+
+		puts(str);
 
-	mfsdram(SDRAM_ECC_CFG, mcopt1);
+#ifdef CONFIG_440
+		if (tlb_word2_i_value == TLB_WORD2_I_ENABLE) {
+#endif
+			/* ECC bit set method for non-cached memory */
+			if ((mcopt1 & SDRAM_MCOPT1_DMWD_MASK) == SDRAM_MCOPT1_DMWD_32)
+				address_increment = 4;
+			else
+				address_increment = SDRAM_DATA_ALT_WIDTH;
+			end_address = current_address + num_bytes;
 
-	/* Enable ECC generation without checking or reporting */
+			while (current_address < end_address) {
+				*((unsigned long *)current_address) = 0;
+				current_address += address_increment;
 
-	mtsdram(SDRAM_ECC_CFG, ((mcopt1 & ~SDRAM_ECC_CFG_MCHK_MASK) |
-				SDRAM_ECC_CFG_MCHK_GEN));
+				if ((loop++ % (2 << 20)) == 0) {
+					putc('\b');
+					putc(slash[loopi++ % 8]);
+				}
+			}
+#ifdef CONFIG_440
+		} else {
+			/* ECC bit set method for cached memory */
+			dcbz_area(start_address, num_bytes);
+			/* Write modified dcache lines back to memory */
+			clean_dcache_range(start_address, start_address + num_bytes);
+		}
+#endif /* CONFIG_440 */
 
-	increment = sizeof(u32);
+		blank_string(strlen(str));
 
-#if defined(CONFIG_440)
+		sync();
+		eieio();
+		wait_ddr_idle();
+
+		/* clear ECC error repoting registers */
+		mtsdram(SDRAM_ECCES, 0xffffffff);
+		mtdcr(0x4c, 0xffffffff);
+
+		mtsdram(SDRAM_MCOPT1,
+			(mcopt1 & ~SDRAM_MCOPT1_MCHK_MASK) | SDRAM_MCOPT1_MCHK_CHK_REP);
+		sync();
+		eieio();
+		wait_ddr_idle();
+	}
+}
+
+#if defined(CONFIG_SDRAM_PPC4xx_IBM_DDR)
+void ecc_init(unsigned long * const start, unsigned long size)
+{
 	/*
-	 * Look at the geometry of SDRAM (data width) to determine whether we
-	 * can skip words when writing.
+	 * Init ECC with cache disabled (on PPC's with IBM DDR
+	 * controller (non DDR2), not tested with cache enabled yet
 	 */
+	program_ecc_addr((u32)start, size, TLB_WORD2_I_ENABLE);
+}
+#endif
 
-	if ((mcopt1 & SDRAM_ECC_CFG_DMWD_MASK) != SDRAM_ECC_CFG_DMWD_32)
-		increment = sizeof(u64);
-#endif /* defined(CONFIG_440) */
+#if defined(CONFIG_SDRAM_PPC4xx_IBM_DDR2)
+void do_program_ecc(unsigned long tlb_word2_i_value)
+{
+	unsigned long mcopt1;
+	unsigned long mcopt2;
+	unsigned long mcstat;
+	phys_size_t memsize = sdram_memsize();
 
-	while (current < end) {
-		*current = pattern;
-		 current = (unsigned long *)((long)current + increment);
+	if (memsize > CONFIG_MAX_MEM_MAPPED) {
+		printf("\nWarning: Can't enable ECC on systems with more than 2GB of SDRAM!\n");
+		return;
 	}
 
-	/* Wait until the writes are finished. */
+	mfsdram(SDRAM_MCOPT1, mcopt1);
+	mfsdram(SDRAM_MCOPT2, mcopt2);
 
-	sync();
+	if ((mcopt1 & SDRAM_MCOPT1_MCHK_MASK) != SDRAM_MCOPT1_MCHK_NON) {
+		/* DDR controller must be enabled and not in self-refresh. */
+		mfsdram(SDRAM_MCSTAT, mcstat);
+		if (((mcopt2 & SDRAM_MCOPT2_DCEN_MASK) == SDRAM_MCOPT2_DCEN_ENABLE)
+		    && ((mcopt2 & SDRAM_MCOPT2_SREN_MASK) == SDRAM_MCOPT2_SREN_EXIT)
+		    && ((mcstat & (SDRAM_MCSTAT_MIC_MASK | SDRAM_MCSTAT_SRMS_MASK))
+			== (SDRAM_MCSTAT_MIC_COMP | SDRAM_MCSTAT_SRMS_NOT_SF))) {
 
-	/* Enable ECC generation with checking and no reporting */
-
-	mtsdram(SDRAM_ECC_CFG, ((mcopt1 & ~SDRAM_ECC_CFG_MCHK_MASK) |
-				SDRAM_ECC_CFG_MCHK_CHK));
+			program_ecc_addr(0, memsize, tlb_word2_i_value);
+		}
+	}
 }
+#endif
+
 #endif /* defined(CONFIG_DDR_ECC) || defined(CONFIG_SDRAM_ECC) */
 #endif /* defined(CONFIG_SDRAM_PPC4xx_IBM_DDR)... */
diff --git a/cpu/ppc4xx/ecc.h b/cpu/ppc4xx/ecc.h
index 67c3bff878..b2588919eb 100644
--- a/cpu/ppc4xx/ecc.h
+++ b/cpu/ppc4xx/ecc.h
@@ -2,7 +2,7 @@
  *    Copyright (c) 2008 Nuovation System Designs, LLC
  *	Grant Erickson <gerickson@nuovations.com>
  *
- *    Copyright (c) 2007 DENX Software Engineering, GmbH
+ *    Copyright (c) 2007-2009 DENX Software Engineering, GmbH
  *	Stefan Roese <sr@denx.de>
  *
  *    See file CREDITS for list of people who contributed to this
@@ -25,18 +25,13 @@
  *
  *    Description:
  *	This file implements ECC initialization for PowerPC processors
- *	using the SDRAM DDR2 controller, including the 405EX(r),
- *	440SP(E), 460EX and 460GT.
+ *	using the IBM SDRAM DDR1 & DDR2 controller.
  *
  */
 
 #ifndef _ECC_H_
 #define _ECC_H_
 
-#if !defined(CONFIG_SYS_ECC_PATTERN)
-#define	CONFIG_SYS_ECC_PATTERN	0x00000000
-#endif /* !defined(CONFIG_SYS_ECC_PATTERN) */
-
 /*
  * Since the IBM DDR controller used on 440GP/GX/EP/GR is not register
  * compatible to the IBM DDR/2 controller used on 405EX/440SP/SPe/460EX/GT
@@ -46,24 +41,35 @@
 
 /* For 440GP/GX/EP/GR */
 #if defined(CONFIG_SDRAM_PPC4xx_IBM_DDR)
-#define SDRAM_ECC_CFG		SDRAM_CFG0
-#define SDRAM_ECC_CFG_MCHK_MASK	SDRAM_CFG0_MCHK_MASK
-#define SDRAM_ECC_CFG_MCHK_GEN	SDRAM_CFG0_MCHK_GEN
-#define SDRAM_ECC_CFG_MCHK_CHK	SDRAM_CFG0_MCHK_CHK
-#define SDRAM_ECC_CFG_DMWD_MASK	SDRAM_CFG0_DMWD_MASK
-#define SDRAM_ECC_CFG_DMWD_32	SDRAM_CFG0_DMWD_32
-#endif
+#define SDRAM_MCOPT1		SDRAM_CFG0
+#define SDRAM_MCOPT1_MCHK_MASK	SDRAM_CFG0_MCHK_MASK
+#define SDRAM_MCOPT1_MCHK_NON	SDRAM_CFG0_MCHK_NON
+#define SDRAM_MCOPT1_MCHK_GEN	SDRAM_CFG0_MCHK_GEN
+#define SDRAM_MCOPT1_MCHK_CHK	SDRAM_CFG0_MCHK_CHK
+#define SDRAM_MCOPT1_MCHK_CHK_REP SDRAM_CFG0_MCHK_CHK
+#define SDRAM_MCOPT1_DMWD_MASK	SDRAM_CFG0_DMWD_MASK
+#define SDRAM_MCOPT1_DMWD_32	SDRAM_CFG0_DMWD_32
+
+#define SDRAM_MCSTAT		SDRAM0_MCSTS
+#define SDRAM_MCSTAT_IDLE_MASK	SDRAM_MCSTS_CIS
+#define SDRAM_MCSTAT_IDLE_NOT	SDRAM_MCSTS_IDLE_NOT
 
-/* For 405EX/440SP/SPe/460EX/GT */
-#if defined(CONFIG_SDRAM_PPC4xx_IBM_DDR2)
-#define SDRAM_ECC_CFG		SDRAM_MCOPT1
-#define SDRAM_ECC_CFG_MCHK_MASK	SDRAM_MCOPT1_MCHK_MASK
-#define SDRAM_ECC_CFG_MCHK_GEN	SDRAM_MCOPT1_MCHK_GEN
-#define SDRAM_ECC_CFG_MCHK_CHK	SDRAM_MCOPT1_MCHK_CHK
-#define SDRAM_ECC_CFG_DMWD_MASK	SDRAM_MCOPT1_DMWD_MASK
-#define SDRAM_ECC_CFG_DMWD_32	SDRAM_MCOPT1_DMWD_32
+#define SDRAM_ECCES		SDRAM0_ECCESR
 #endif
 
-extern void ecc_init(unsigned long * const start, unsigned long size);
+void ecc_init(unsigned long * const start, unsigned long size);
+void do_program_ecc(unsigned long tlb_word2_i_value);
+
+static void inline blank_string(int size)
+{
+	int i;
+
+	for (i = 0; i < size; i++)
+		putc('\b');
+	for (i = 0; i < size; i++)
+		putc(' ');
+	for (i = 0; i < size; i++)
+		putc('\b');
+}
 
 #endif /* _ECC_H_ */