Merge with /home/stefan/git/u-boot/denx

6 files changed, 270 insertions, 372 deletions

diff --git a/cpu/mpc85xx/Makefile b/cpu/mpc85xx/Makefile
index bbc5084..ff67dcd 100644
--- a/cpu/mpc85xx/Makefile
+++ b/cpu/mpc85xx/Makefile
@@ -30,7 +30,7 @@ LIB	= $(obj)lib$(CPU).a
 
 START	= start.o resetvec.o
 COBJS	= traps.o cpu.o cpu_init.o speed.o interrupts.o \
-	  pci.o serial_scc.o commproc.o ether_fcc.o i2c.o spd_sdram.o
+	  pci.o serial_scc.o commproc.o ether_fcc.o spd_sdram.o
 
 SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
@@ -39,7 +39,7 @@ START	:= $(addprefix $(obj),$(START))
 all:	$(obj).depend $(START) $(LIB)
 
 $(LIB):	$(OBJS)
-	$(AR) crv $@ $(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
 
 #########################################################################
 
diff --git a/cpu/mpc85xx/cpu.c b/cpu/mpc85xx/cpu.c
index f7fe22e..0507c47 100644
--- a/cpu/mpc85xx/cpu.c
+++ b/cpu/mpc85xx/cpu.c
@@ -30,7 +30,10 @@
 #include <command.h>
 #include <asm/cache.h>
 
-/* ------------------------------------------------------------------------- */
+#if defined(CONFIG_OF_FLAT_TREE)
+#include <ft_build.h>
+#endif
+
 
 int checkcpu (void)
 {
@@ -227,3 +230,48 @@ int dma_xfer(void *dest, uint count, void *src) {
 	return dma_check();
 }
 #endif
+
+
+#ifdef CONFIG_OF_FLAT_TREE
+void
+ft_cpu_setup(void *blob, bd_t *bd)
+{
+	u32 *p;
+	ulong clock;
+	int len;
+
+	clock = bd->bi_busfreq;
+	p = ft_get_prop(blob, "/cpus/" OF_CPU "/bus-frequency", &len);
+	if (p != NULL)
+		*p = cpu_to_be32(clock);
+
+	p = ft_get_prop(blob, "/" OF_SOC "/serial@4500/clock-frequency", &len);
+	if (p != NULL)
+		*p = cpu_to_be32(clock);
+
+	p = ft_get_prop(blob, "/" OF_SOC "/serial@4600/clock-frequency", &len);
+	if (p != NULL)
+		*p = cpu_to_be32(clock);
+
+#if defined(CONFIG_MPC85XX_TSEC1)
+	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@24000/mac-address", &len);
+		memcpy(p, bd->bi_enetaddr, 6);
+#endif
+
+#if defined(CONFIG_HAS_ETH1)
+	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@25000/mac-address", &len);
+		memcpy(p, bd->bi_enet1addr, 6);
+#endif
+
+#if defined(CONFIG_HAS_ETH2)
+	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@26000/mac-address", &len);
+		memcpy(p, bd->bi_enet2addr, 6);
+#endif
+
+#if defined(CONFIG_HAS_ETH3)
+	p = ft_get_prop(blob, "/" OF_SOC "/ethernet@27000/mac-address", &len);
+		memcpy(p, bd->bi_enet3addr, 6);
+#endif
+
+}
+#endif
diff --git a/cpu/mpc85xx/cpu_init.c b/cpu/mpc85xx/cpu_init.c
index c12b47b..9f4d36c 100644
--- a/cpu/mpc85xx/cpu_init.c
+++ b/cpu/mpc85xx/cpu_init.c
@@ -32,6 +32,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+
 #ifdef CONFIG_CPM2
 static void config_8560_ioports (volatile immap_t * immr)
 {
diff --git a/cpu/mpc85xx/i2c.c b/cpu/mpc85xx/i2c.c
deleted file mode 100644
index 32dcf5d..0000000
--- a/cpu/mpc85xx/i2c.c
+++ /dev/null
@@ -1,265 +0,0 @@
-/*
- * (C) Copyright 2003,Motorola Inc.
- * Xianghua Xiao <x.xiao@motorola.com>
- * Adapted for Motorola 85xx chip.
- *
- * (C) Copyright 2003
- * Gleb Natapov <gnatapov@mrv.com>
- * Some bits are taken from linux driver writen by adrian@humboldt.co.uk
- *
- * Hardware I2C driver for MPC107 PCI bridge.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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
- */
-
-#include <common.h>
-#include <command.h>
-#include <asm/io.h>
-
-#ifdef CONFIG_HARD_I2C
-#include <i2c.h>
-
-#define TIMEOUT (CFG_HZ/4)
-
-#define I2C_Addr ((u8 *)(CFG_CCSRBAR + 0x3000))
-
-#define I2CADR  &I2C_Addr[0]
-#define I2CFDR  &I2C_Addr[4]
-#define I2CCCR  &I2C_Addr[8]
-#define I2CCSR  &I2C_Addr[12]
-#define I2CCDR  &I2C_Addr[16]
-#define I2CDFSRR &I2C_Addr[20]
-
-#define I2C_READ  1
-#define I2C_WRITE 0
-
-void
-i2c_init(int speed, int slaveadd)
-{
-	/* stop I2C controller */
-	writeb(0x0, I2CCCR);
-
-	/* set clock */
-	writeb(0x3f, I2CFDR);
-
-	/* set default filter */
-	writeb(0x10,I2CDFSRR);
-
-	/* write slave address */
-	writeb(slaveadd, I2CADR);
-
-	/* clear status register */
-	writeb(0x0, I2CCSR);
-
-	/* start I2C controller */
-	writeb(MPC85xx_I2CCR_MEN, I2CCCR);
-}
-
-static __inline__ int
-i2c_wait4bus (void)
-{
-	ulong timeval = get_timer (0);
-
-	while (readb(I2CCSR) & MPC85xx_I2CSR_MBB) {
-		if (get_timer (timeval) > TIMEOUT) {
-			return -1;
-		}
-	}
-
-  return 0;
-}
-
-static __inline__ int
-i2c_wait (int write)
-{
-	u32 csr;
-	ulong timeval = get_timer (0);
-
-	do {
-		csr = readb(I2CCSR);
-
-		if (!(csr & MPC85xx_I2CSR_MIF))
-			continue;
-
-		writeb(0x0, I2CCSR);
-
-		if (csr & MPC85xx_I2CSR_MAL) {
-			debug("i2c_wait: MAL\n");
-			return -1;
-		}
-
-		if (!(csr & MPC85xx_I2CSR_MCF))	{
-			debug("i2c_wait: unfinished\n");
-			return -1;
-		}
-
-		if (write == I2C_WRITE && (csr & MPC85xx_I2CSR_RXAK)) {
-			debug("i2c_wait: No RXACK\n");
-			return -1;
-		}
-
-		return 0;
-	} while (get_timer (timeval) < TIMEOUT);
-
-	debug("i2c_wait: timed out\n");
-	return -1;
-}
-
-static __inline__ int
-i2c_write_addr (u8 dev, u8 dir, int rsta)
-{
-	writeb(MPC85xx_I2CCR_MEN | MPC85xx_I2CCR_MSTA | MPC85xx_I2CCR_MTX |
-	       (rsta?MPC85xx_I2CCR_RSTA:0),
-	       I2CCCR);
-
-	writeb((dev << 1) | dir, I2CCDR);
-
-	if (i2c_wait (I2C_WRITE) < 0)
-		return 0;
-
-	return 1;
-}
-
-static __inline__ int
-__i2c_write (u8 *data, int length)
-{
-	int i;
-
-	writeb(MPC85xx_I2CCR_MEN | MPC85xx_I2CCR_MSTA | MPC85xx_I2CCR_MTX,
-	       I2CCCR);
-
-	for (i=0; i < length; i++) {
-		writeb(data[i], I2CCDR);
-
-		if (i2c_wait (I2C_WRITE) < 0)
-			break;
-	}
-
-	return i;
-}
-
-static __inline__ int
-__i2c_read (u8 *data, int length)
-{
-	int i;
-
-	writeb(MPC85xx_I2CCR_MEN | MPC85xx_I2CCR_MSTA |
-	       ((length == 1) ? MPC85xx_I2CCR_TXAK : 0),
-	       I2CCCR);
-
-	/* dummy read */
-	readb(I2CCDR);
-
-	for (i=0; i < length; i++) {
-		if (i2c_wait (I2C_READ) < 0)
-			break;
-
-		/* Generate ack on last next to last byte */
-		if (i == length - 2)
-			writeb(MPC85xx_I2CCR_MEN | MPC85xx_I2CCR_MSTA |
-			       MPC85xx_I2CCR_TXAK,
-			       I2CCCR);
-
-		/* Generate stop on last byte */
-		if (i == length - 1)
-			writeb(MPC85xx_I2CCR_MEN | MPC85xx_I2CCR_TXAK, I2CCCR);
-
-		data[i] = readb(I2CCDR);
-	}
-
-	return i;
-}
-
-int
-i2c_read (u8 dev, uint addr, int alen, u8 *data, int length)
-{
-	int i = 0;
-	u8 *a = (u8*)&addr;
-
-	if (i2c_wait4bus () < 0)
-		goto exit;
-
-	if (i2c_write_addr (dev, I2C_WRITE, 0) == 0)
-		goto exit;
-
-	if (__i2c_write (&a[4 - alen], alen) != alen)
-		goto exit;
-
-	if (i2c_write_addr (dev, I2C_READ, 1) == 0)
-		goto exit;
-
-	i = __i2c_read (data, length);
-
- exit:
-	writeb(MPC85xx_I2CCR_MEN, I2CCCR);
-
-	return !(i == length);
-}
-
-int
-i2c_write (u8 dev, uint addr, int alen, u8 *data, int length)
-{
-	int i = 0;
-	u8 *a = (u8*)&addr;
-
-	if (i2c_wait4bus () < 0)
-		goto exit;
-
-	if (i2c_write_addr (dev, I2C_WRITE, 0) == 0)
-		goto exit;
-
-	if (__i2c_write (&a[4 - alen], alen) != alen)
-		goto exit;
-
-	i = __i2c_write (data, length);
-
- exit:
-	writeb(MPC85xx_I2CCR_MEN, I2CCCR);
-
-	return !(i == length);
-}
-
-int i2c_probe (uchar chip)
-{
-	int tmp;
-
-	/*
-	 * Try to read the first location of the chip.  The underlying
-	 * driver doesn't appear to support sending just the chip address
-	 * and looking for an <ACK> back.
-	 */
-	udelay(10000);
-	return i2c_read (chip, 0, 1, (uchar *)&tmp, 1);
-}
-
-uchar i2c_reg_read (uchar i2c_addr, uchar reg)
-{
-	uchar buf[1];
-
-	i2c_read (i2c_addr, reg, 1, buf, 1);
-
-	return (buf[0]);
-}
-
-void i2c_reg_write (uchar i2c_addr, uchar reg, uchar val)
-{
-	i2c_write (i2c_addr, reg, 1, &val, 1);
-}
-
-#endif /* CONFIG_HARD_I2C */
diff --git a/cpu/mpc85xx/pci.c b/cpu/mpc85xx/pci.c
index a94493e..84f839a 100644
--- a/cpu/mpc85xx/pci.c
+++ b/cpu/mpc85xx/pci.c
@@ -29,69 +29,101 @@
 #include <asm/cpm_85xx.h>
 #include <pci.h>
 
+#if defined(CONFIG_OF_FLAT_TREE)
+#include <ft_build.h>
+#endif
 
 #if defined(CONFIG_PCI)
 
+static struct pci_controller *pci_hose;
+
 void
-pci_mpc85xx_init(struct pci_controller *hose)
+pci_mpc85xx_init(struct pci_controller *board_hose)
 {
+	u16 reg16;
+	u32 dev;
+
 	volatile immap_t    *immap = (immap_t *)CFG_CCSRBAR;
 	volatile ccsr_pcix_t *pcix = &immap->im_pcix;
+#ifdef CONFIG_MPC85XX_PCI2
+	volatile ccsr_pcix_t *pcix2 = &immap->im_pcix2;
+#endif
+	volatile ccsr_gur_t *gur = &immap->im_gur;
+	struct pci_controller * hose;
 
-	u16 reg16;
+	pci_hose = board_hose;
+
+	hose = &pci_hose[0];
 
 	hose->first_busno = 0;
 	hose->last_busno = 0xff;
 
-	pci_set_region(hose->regions + 0,
-		       CFG_PCI1_MEM_BASE,
-		       CFG_PCI1_MEM_PHYS,
-		       CFG_PCI1_MEM_SIZE,
-		       PCI_REGION_MEM);
-
-	pci_set_region(hose->regions + 1,
-		       CFG_PCI1_IO_BASE,
-		       CFG_PCI1_IO_PHYS,
-		       CFG_PCI1_IO_SIZE,
-		       PCI_REGION_IO);
-
-	hose->region_count = 2;
-
 	pci_setup_indirect(hose,
 			   (CFG_IMMR+0x8000),
 			   (CFG_IMMR+0x8004));
 
+	/*
+	 * Hose scan.
+	 */
+	dev = PCI_BDF(hose->first_busno, 0, 0);
+	pci_hose_read_config_word (hose, dev, PCI_COMMAND, &reg16);
+	reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
+	pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16);
+
+	/*
+	 * Clear non-reserved bits in status register.
+	 */
+	pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
+
+	if (!(gur->pordevsr & PORDEVSR_PCI)) {
+		/* PCI-X init */
+		if (CONFIG_SYS_CLK_FREQ < 66000000)
+			printf("PCI-X will only work at 66 MHz\n");
+
+		reg16 = PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ
+			| PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E;
+		pci_hose_write_config_word(hose, dev, PCIX_COMMAND, reg16);
+	}
+
 	pcix->potar1   = (CFG_PCI1_MEM_BASE >> 12) & 0x000fffff;
 	pcix->potear1  = 0x00000000;
-	pcix->powbar1  = (CFG_PCI1_MEM_BASE >> 12) & 0x000fffff;
+	pcix->powbar1  = (CFG_PCI1_MEM_PHYS >> 12) & 0x000fffff;
 	pcix->powbear1 = 0x00000000;
-	pcix->powar1   = 0x8004401c;	/* 512M MEM space */
+	pcix->powar1 = (POWAR_EN | POWAR_MEM_READ |
+			POWAR_MEM_WRITE | POWAR_MEM_512M);
 
-	pcix->potar2   = 0x00000000;
+	pcix->potar2  = (CFG_PCI1_IO_BASE >> 12) & 0x000fffff;
 	pcix->potear2  = 0x00000000;
-	pcix->powbar2  = (CFG_PCI1_IO_BASE >> 12) & 0x000fffff;
+	pcix->powbar2  = (CFG_PCI1_IO_PHYS >> 12) & 0x000fffff;
 	pcix->powbear2 = 0x00000000;
-	pcix->powar2   = 0x80088017;	/* 16M IO space */
+	pcix->powar2 = (POWAR_EN | POWAR_IO_READ |
+			POWAR_IO_WRITE | POWAR_IO_1M);
 
 	pcix->pitar1 = 0x00000000;
 	pcix->piwbar1 = 0x00000000;
-	pcix->piwar1 = 0xa0f5501e;	/* Enable, Prefetch, Local Mem,
-					 * Snoop R/W, 2G */
+	pcix->piwar1 = (PIWAR_EN | PIWAR_PF | PIWAR_LOCAL |
+			PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP | PIWAR_MEM_2G);
 
-	/*
-	 * Hose scan.
-	 */
-	pci_register_hose(hose);
+	pcix->powar3 = 0;
+	pcix->powar4 = 0;
+	pcix->piwar2 = 0;
+	pcix->piwar3 = 0;
 
-	pci_read_config_word (PCI_BDF(0,0,0), PCI_COMMAND, &reg16);
-	reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
-	pci_write_config_word(PCI_BDF(0,0,0), PCI_COMMAND, reg16);
+	pci_set_region(hose->regions + 0,
+		       CFG_PCI1_MEM_BASE,
+		       CFG_PCI1_MEM_PHYS,
+		       CFG_PCI1_MEM_SIZE,
+		       PCI_REGION_MEM);
 
-	/*
-	 * Clear non-reserved bits in status register.
-	 */
-	pci_write_config_word(PCI_BDF(0,0,0), PCI_STATUS, 0xffff);
-	pci_write_config_byte(PCI_BDF(0,0,0), PCI_LATENCY_TIMER,0x80);
+	pci_set_region(hose->regions + 1,
+		       CFG_PCI1_IO_BASE,
+		       CFG_PCI1_IO_PHYS,
+		       CFG_PCI1_IO_SIZE,
+		       PCI_REGION_IO);
+
+	hose->region_count = 2;
+
+	pci_register_hose(hose);
 
 #if defined(CONFIG_MPC8555CDS) || defined(CONFIG_MPC8541CDS)
 	/*
@@ -117,6 +149,94 @@ pci_mpc85xx_init(struct pci_controller *hose)
 #endif
 
 	hose->last_busno = pci_hose_scan(hose);
+
+#ifdef CONFIG_MPC85XX_PCI2
+	hose = &pci_hose[1];
+
+	hose->first_busno = pci_hose[0].last_busno + 1;
+	hose->last_busno = 0xff;
+
+	pci_setup_indirect(hose,
+			   (CFG_IMMR+0x9000),
+			   (CFG_IMMR+0x9004));
+
+	dev = PCI_BDF(hose->first_busno, 0, 0);
+	pci_hose_read_config_word (hose, dev, PCI_COMMAND, &reg16);
+	reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
+	pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16);
+
+	/*
+	 * Clear non-reserved bits in status register.
+	 */
+	pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff);
+
+	pcix2->potar1   = (CFG_PCI2_MEM_BASE >> 12) & 0x000fffff;
+	pcix2->potear1  = 0x00000000;
+	pcix2->powbar1  = (CFG_PCI2_MEM_PHYS >> 12) & 0x000fffff;
+	pcix2->powbear1 = 0x00000000;
+	pcix2->powar1 = (POWAR_EN | POWAR_MEM_READ |
+			POWAR_MEM_WRITE | POWAR_MEM_512M);
+
+	pcix2->potar2  = (CFG_PCI2_IO_BASE >> 12) & 0x000fffff;
+	pcix2->potear2  = 0x00000000;
+	pcix2->powbar2  = (CFG_PCI2_IO_PHYS >> 12) & 0x000fffff;
+	pcix2->powbear2 = 0x00000000;
+	pcix2->powar2 = (POWAR_EN | POWAR_IO_READ |
+			POWAR_IO_WRITE | POWAR_IO_1M);
+
+	pcix2->pitar1 = 0x00000000;
+	pcix2->piwbar1 = 0x00000000;
+	pcix2->piwar1 = (PIWAR_EN | PIWAR_PF | PIWAR_LOCAL |
+			PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP | PIWAR_MEM_2G);
+
+	pcix2->powar3 = 0;
+	pcix2->powar4 = 0;
+	pcix2->piwar2 = 0;
+	pcix2->piwar3 = 0;
+
+	pci_set_region(hose->regions + 0,
+		       CFG_PCI2_MEM_BASE,
+		       CFG_PCI2_MEM_PHYS,
+		       CFG_PCI2_MEM_SIZE,
+		       PCI_REGION_MEM);
+
+	pci_set_region(hose->regions + 1,
+		       CFG_PCI2_IO_BASE,
+		       CFG_PCI2_IO_PHYS,
+		       CFG_PCI2_IO_SIZE,
+		       PCI_REGION_IO);
+
+	hose->region_count = 2;
+
+	/*
+	 * Hose scan.
+	 */
+	pci_register_hose(hose);
+
+	hose->last_busno = pci_hose_scan(hose);
+#endif
 }
 
+#ifdef CONFIG_OF_FLAT_TREE
+void
+ft_pci_setup(void *blob, bd_t *bd)
+{
+	u32 *p;
+	int len;
+
+	p = (u32 *)ft_get_prop(blob, "/" OF_SOC "/pci@8000/bus-range", &len);
+	if (p != NULL) {
+		p[0] = pci_hose[0].first_busno;
+		p[1] = pci_hose[0].last_busno;
+	}
+
+#ifdef CONFIG_MPC85XX_PCI2
+	p = (u32 *)ft_get_prop(blob, "/" OF_SOC "/pci@9000/bus-range", &len);
+	if (p != NULL) {
+		p[0] = pci_hose[1].first_busno;
+		p[1] = pci_hose[1].last_busno;
+	}
+#endif
+}
+#endif /* CONFIG_OF_FLAT_TREE */
 #endif /* CONFIG_PCI */
diff --git a/cpu/mpc85xx/spd_sdram.c b/cpu/mpc85xx/spd_sdram.c
index af99282..6da5367 100644
--- a/cpu/mpc85xx/spd_sdram.c
+++ b/cpu/mpc85xx/spd_sdram.c
@@ -131,8 +131,8 @@ convert_bcd_tenths_to_cycle_time_ps(unsigned int spd_val)
 		800,
 		900,
 		250,
-		330,	/* FIXME: Is 333 better/valid? */
-		660,	/* FIXME: Is 667 better/valid? */
+		330,
+		660,
 		750,
 		0,	/* undefined */
 		0	/* undefined */
@@ -146,6 +146,28 @@ convert_bcd_tenths_to_cycle_time_ps(unsigned int spd_val)
 }
 
 
+/*
+ * Determine Refresh Rate.  Ignore self refresh bit on DDR I.
+ * Table from SPD Spec, Byte 12, converted to picoseconds and
+ * filled in with "default" normal values.
+ */
+unsigned int determine_refresh_rate(unsigned int spd_refresh)
+{
+	unsigned int refresh_time_ns[8] = {
+		15625000,	/* 0 Normal    1.00x */
+		3900000,	/* 1 Reduced    .25x */
+		7800000,	/* 2 Extended   .50x */
+		31300000,	/* 3 Extended  2.00x */
+		62500000,	/* 4 Extended  4.00x */
+		125000000,	/* 5 Extended  8.00x */
+		15625000,	/* 6 Normal    1.00x  filler */
+		15625000,	/* 7 Normal    1.00x  filler */
+	};
+
+	return picos_to_clk(refresh_time_ns[spd_refresh & 0x7]);
+}
+
+
 long int
 spd_sdram(void)
 {
@@ -157,6 +179,10 @@ spd_sdram(void)
 	unsigned int rank_density;
 	unsigned int odt_rd_cfg, odt_wr_cfg;
 	unsigned int odt_cfg, mode_odt_enable;
+	unsigned int refresh_clk;
+#ifdef MPC85xx_DDR_SDRAM_CLK_CNTL
+	unsigned char clk_adjust;
+#endif
 	unsigned int dqs_cfg;
 	unsigned char twr_clk, twtr_clk, twr_auto_clk;
 	unsigned int tCKmin_ps, tCKmax_ps;
@@ -740,38 +766,21 @@ spd_sdram(void)
 	ddr->sdram_mode_2 = 0;
 	debug("DDR: sdram_mode_2 = 0x%08x\n", ddr->sdram_mode_2);
 
-
 	/*
-	 * Determine Refresh Rate.  Ignore self refresh bit on DDR I.
-	 * Table from SPD Spec, Byte 12, converted to picoseconds and
-	 * filled in with "default" normal values.
+	 * Determine Refresh Rate.
 	 */
-	{
-		unsigned int refresh_clk;
-		unsigned int refresh_time_ns[8] = {
-			15625000,	/* 0 Normal    1.00x */
-			3900000,	/* 1 Reduced    .25x */
-			7800000,	/* 2 Extended   .50x */
-			31300000,	/* 3 Extended  2.00x */
-			62500000,	/* 4 Extended  4.00x */
-			125000000,	/* 5 Extended  8.00x */
-			15625000,	/* 6 Normal    1.00x  filler */
-			15625000,	/* 7 Normal    1.00x  filler */
-		};
-
-		refresh_clk = picos_to_clk(refresh_time_ns[spd.refresh & 0x7]);
+	refresh_clk = determine_refresh_rate(spd.refresh & 0x7);
 
-		/*
-		 * Set BSTOPRE to 0x100 for page mode
-		 * If auto-charge is used, set BSTOPRE = 0
-		 */
-		ddr->sdram_interval =
-			(0
-			 | (refresh_clk & 0x3fff) << 16
-			 | 0x100
-			 );
-		debug("DDR: sdram_interval = 0x%08x\n", ddr->sdram_interval);
-	}
+	/*
+	 * Set BSTOPRE to 0x100 for page mode
+	 * If auto-charge is used, set BSTOPRE = 0
+	 */
+	ddr->sdram_interval =
+	    (0
+	     | (refresh_clk & 0x3fff) << 16
+	     | 0x100
+	     );
+	debug("DDR: sdram_interval = 0x%08x\n", ddr->sdram_interval);
 
 	/*
 	 * Is this an ECC DDR chip?
@@ -835,28 +844,23 @@ spd_sdram(void)
 
 
 #ifdef MPC85xx_DDR_SDRAM_CLK_CNTL
-	{
-		unsigned char clk_adjust;
-
-		/*
-		 * Setup the clock control.
-		 * SDRAM_CLK_CNTL[0] = Source synchronous enable == 1
-		 * SDRAM_CLK_CNTL[5-7] = Clock Adjust
-		 *	0110	3/4 cycle late
-		 *	0111	7/8 cycle late
-		 */
-		if (spd.mem_type == SPD_MEMTYPE_DDR) {
-			clk_adjust = 0x6;
-		} else {
-			clk_adjust = 0x7;
-		}
+	/*
+	 * Setup the clock control.
+	 * SDRAM_CLK_CNTL[0] = Source synchronous enable == 1
+	 * SDRAM_CLK_CNTL[5-7] = Clock Adjust
+	 *	0110	3/4 cycle late
+	 *	0111	7/8 cycle late
+	 */
+	if (spd.mem_type == SPD_MEMTYPE_DDR)
+		clk_adjust = 0x6;
+	else
+		clk_adjust = 0x7;
 
-		ddr->sdram_clk_cntl = (0
+	ddr->sdram_clk_cntl = (0
 			       | 0x80000000
 			       | (clk_adjust << 23)
 			       );
-		debug("DDR: sdram_clk_cntl = 0x%08x\n", ddr->sdram_clk_cntl);
-	}
+	debug("DDR: sdram_clk_cntl = 0x%08x\n", ddr->sdram_clk_cntl);
 #endif
 
 	/*
@@ -1081,26 +1085,16 @@ ddr_enable_ecc(unsigned int dram_size)
 		}
 	}
 
-	/* 8K */
-	dma_xfer((uint *)0x2000, 0x2000, (uint *)0);
-	/* 16K */
-	dma_xfer((uint *)0x4000, 0x4000, (uint *)0);
-	/* 32K */
-	dma_xfer((uint *)0x8000, 0x8000, (uint *)0);
-	/* 64K */
-	dma_xfer((uint *)0x10000, 0x10000, (uint *)0);
-	/* 128k */
-	dma_xfer((uint *)0x20000, 0x20000, (uint *)0);
-	/* 256k */
-	dma_xfer((uint *)0x40000, 0x40000, (uint *)0);
-	/* 512k */
-	dma_xfer((uint *)0x80000, 0x80000, (uint *)0);
-	/* 1M */
-	dma_xfer((uint *)0x100000, 0x100000, (uint *)0);
-	/* 2M */
-	dma_xfer((uint *)0x200000, 0x200000, (uint *)0);
-	/* 4M */
-	dma_xfer((uint *)0x400000, 0x400000, (uint *)0);
+	dma_xfer((uint *)0x002000, 0x002000, (uint *)0); /* 8K */
+	dma_xfer((uint *)0x004000, 0x004000, (uint *)0); /* 16K */
+	dma_xfer((uint *)0x008000, 0x008000, (uint *)0); /* 32K */
+	dma_xfer((uint *)0x010000, 0x010000, (uint *)0); /* 64K */
+	dma_xfer((uint *)0x020000, 0x020000, (uint *)0); /* 128k */
+	dma_xfer((uint *)0x040000, 0x040000, (uint *)0); /* 256k */
+	dma_xfer((uint *)0x080000, 0x080000, (uint *)0); /* 512k */
+	dma_xfer((uint *)0x100000, 0x100000, (uint *)0); /* 1M */
+	dma_xfer((uint *)0x200000, 0x200000, (uint *)0); /* 2M */
+	dma_xfer((uint *)0x400000, 0x400000, (uint *)0); /* 4M */
 
 	for (i = 1; i < dram_size / 0x800000; i++) {
 		dma_xfer((uint *)(0x800000*i), 0x800000, (uint *)0);