* Patch by Rune Torgersen, 13 Feb 2003:

  Add support for Motorola MPC8266ADS board

* Patch by Kyle Harris, 19 Feb 2003:
  patches for the Intel lubbock board:
  memsetup.S - general cleanup (based on Robert's csb226 code)
  flash.c - overhaul, actually works now
  lubbock.c - fix init funcs to return proper value

* Patch by Kenneth Johansson, 26 Feb 2003:
  - Fixed off by one in RFTA calculation.
  - No need to abort when LDF is lower than we can program it's only
    minimum timing so clamp it to what we can do.
  - Takes function pointer to function for reading the spd_nvram. Usefull
    for faking data or hardcode a module without the nvram.
  - fix other user for above change
  - fix some comments.

* Patches by Brian Waite, 26 Feb 2003:
  - fix port for evb64260 board
  - fix PCI for evb64260 board
  - fix PCI scan

* Patch by Reinhard Meyer, 1 Mar 2003:
  Add support for EMK TOP860 Module

* Patch by Yuli Barcohen, 02 Mar 2003:
  Add SPD EEPROM support for MPC8260ADS board

1 files changed, 565 insertions, 0 deletions

diff --git a/board/mpc8266ads/mpc8266ads.c b/board/mpc8266ads/mpc8266ads.c
new file mode 100644
index 0000000..796b37d
--- /dev/null
+++ b/board/mpc8266ads/mpc8266ads.c
@@ -0,0 +1,565 @@
+/*
+ * (C) Copyright 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Modified during 2001 by
+ * Advanced Communications Technologies (Australia) Pty. Ltd.
+ * Howard Walker, Tuong Vu-Dinh
+ *
+ * (C) Copyright 2001, Stuart Hughes, Lineo Inc, stuarth@lineo.com
+ * Added support for the 16M dram simm on the 8260ads boards
+ *
+ * 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 <ioports.h>
+#include <i2c.h>
+#include <mpc8260.h>
+
+/*
+ * PBI Page Based Interleaving
+ *   PSDMR_PBI page based interleaving
+ *   0         bank based interleaving
+ * External Address Multiplexing (EAMUX) adds a clock to address cycles
+ *   (this can help with marginal board layouts)
+ *   PSDMR_EAMUX  adds a clock
+ *   0            no extra clock
+ * Buffer Command (BUFCMD) adds a clock to command cycles.
+ *   PSDMR_BUFCMD adds a clock
+ *   0            no extra clock
+ */
+#define CONFIG_PBI		0
+#define PESSIMISTIC_SDRAM	0
+#define EAMUX			0	/* EST requires EAMUX */
+#define BUFCMD			0
+
+
+/*
+ * I/O Port configuration table
+ *
+ * if conf is 1, then that port pin will be configured at boot time
+ * according to the five values podr/pdir/ppar/psor/pdat for that entry
+ */
+
+const iop_conf_t iop_conf_tab[4][32] = {
+
+    /* Port A configuration */
+    {	/*	      conf ppar psor pdir podr pdat */
+        /* PA31 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 TxENB */
+	/* PA30 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 TxClav   */
+	/* PA29 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 TxSOC  */
+	/* PA28 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 RxENB */
+	/* PA27 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 RxSOC */
+	/* PA26 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 RxClav */
+	/* PA25 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[0] */
+	/* PA24 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[1] */
+	/* PA23 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[2] */
+	/* PA22 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[3] */
+	/* PA21 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[4] */
+	/* PA20 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[5] */
+	/* PA19 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[6] */
+	/* PA18 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[7] */
+	/* PA17 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[7] */
+	/* PA16 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[6] */
+	/* PA15 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[5] */
+	/* PA14 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[4] */
+	/* PA13 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[3] */
+	/* PA12 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[2] */
+	/* PA11 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[1] */
+	/* PA10 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[0] */
+	/* PA9  */ {   0,   1,   1,   1,   0,   0   }, /* FCC1 L1TXD */
+	/* PA8  */ {   0,   1,   1,   0,   0,   0   }, /* FCC1 L1RXD */
+	/* PA7  */ {   0,   0,   0,   1,   0,   0   }, /* PA7 */
+	/* PA6  */ {   1,   1,   1,   1,   0,   0   }, /* TDM A1 L1RSYNC */
+	/* PA5  */ {   0,   0,   0,   1,   0,   0   }, /* PA5 */
+	/* PA4  */ {   0,   0,   0,   1,   0,   0   }, /* PA4 */
+	/* PA3  */ {   0,   0,   0,   1,   0,   0   }, /* PA3 */
+	/* PA2  */ {   0,   0,   0,   1,   0,   0   }, /* PA2 */
+	/* PA1  */ {   1,   0,   0,   0,   0,   0   }, /* FREERUN */
+	/* PA0  */ {   0,   0,   0,   1,   0,   0   }  /* PA0 */
+    },
+
+    /* Port B configuration */
+    {   /*	      conf ppar psor pdir podr pdat */
+	/* PB31 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 MII TX_ER */
+	/* PB30 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RX_DV */
+	/* PB29 */ {   1,   1,   1,   1,   0,   0   }, /* FCC2 MII TX_EN */
+	/* PB28 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RX_ER */
+	/* PB27 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII COL */
+	/* PB26 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII CRS */
+	/* PB25 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 MII TxD[3] */
+	/* PB24 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 MII TxD[2] */
+	/* PB23 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 MII TxD[1] */
+	/* PB22 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 MII TxD[0] */
+	/* PB21 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RxD[0] */
+	/* PB20 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RxD[1] */
+	/* PB19 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RxD[2] */
+	/* PB18 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RxD[3] */
+	/* PB17 */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:RX_DIV */
+	/* PB16 */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:RX_ERR */
+	/* PB15 */ {   0,   1,   0,   1,   0,   0   }, /* FCC3:TX_ERR */
+	/* PB14 */ {   0,   1,   0,   1,   0,   0   }, /* FCC3:TX_EN */
+	/* PB13 */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:COL */
+	/* PB12 */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:CRS */
+	/* PB11 */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:RXD */
+	/* PB10 */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:RXD */
+	/* PB9  */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:RXD */
+	/* PB8  */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:RXD */
+	/* PB7  */ {   0,   1,   0,   1,   0,   0   }, /* FCC3:TXD */
+	/* PB6  */ {   0,   1,   0,   1,   0,   0   }, /* FCC3:TXD */
+	/* PB5  */ {   0,   1,   0,   1,   0,   0   }, /* FCC3:TXD */
+	/* PB4  */ {   0,   1,   0,   1,   0,   0   }, /* FCC3:TXD */
+	/* PB3  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
+	/* PB2  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
+	/* PB1  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
+	/* PB0  */ {   0,   0,   0,   0,   0,   0   }  /* pin doesn't exist */
+    },
+
+    /* Port C */
+    {   /*	      conf ppar psor pdir podr pdat */
+	/* PC31 */ {   0,   0,   0,   1,   0,   0   }, /* PC31 */
+	/* PC30 */ {   0,   0,   0,   1,   0,   0   }, /* PC30 */
+	/* PC29 */ {   0,   1,   1,   0,   0,   0   }, /* SCC1 EN *CLSN */
+	/* PC28 */ {   0,   0,   0,   1,   0,   0   }, /* PC28 */
+	/* PC27 */ {   0,   0,   0,   1,   0,   0   }, /* UART Clock in */
+	/* PC26 */ {   0,   0,   0,   1,   0,   0   }, /* PC26 */
+	/* PC25 */ {   0,   0,   0,   1,   0,   0   }, /* PC25 */
+	/* PC24 */ {   0,   0,   0,   1,   0,   0   }, /* PC24 */
+	/* PC23 */ {   0,   1,   0,   1,   0,   0   }, /* ATMTFCLK */
+	/* PC22 */ {   0,   1,   0,   0,   0,   0   }, /* ATMRFCLK */
+	/* PC21 */ {   0,   1,   0,   0,   0,   0   }, /* SCC1 EN RXCLK */
+	/* PC20 */ {   0,   1,   0,   0,   0,   0   }, /* SCC1 EN TXCLK */
+	/* PC19 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RX_CLK CLK13 */
+	/* PC18 */ {   1,   1,   0,   0,   0,   0   }, /* FCC Tx Clock (CLK14) */
+	/* PC17 */ {   0,   0,   0,   1,   0,   0   }, /* PC17 */
+	/* PC16 */ {   0,   1,   0,   0,   0,   0   }, /* FCC Tx Clock (CLK16) */
+	/* PC15 */ {   0,   0,   0,   1,   0,   0   }, /* PC15 */
+	/* PC14 */ {   0,   1,   0,   0,   0,   0   }, /* SCC1 EN *CD */
+	/* PC13 */ {   0,   0,   0,   1,   0,   0   }, /* PC13 */
+	/* PC12 */ {   0,   1,   0,   1,   0,   0   }, /* PC12 */
+	/* PC11 */ {   0,   0,   0,   1,   0,   0   }, /* LXT971 transmit control */
+	/* PC10 */ {   1,   1,   0,   0,   0,   0   }, /* LXT970 FETHMDC */
+	/* PC9  */ {   1,   1,   0,   0,   0,   0   }, /* LXT970 FETHMDIO */
+	/* PC8  */ {   0,   0,   0,   1,   0,   0   }, /* PC8 */
+	/* PC7  */ {   0,   0,   0,   1,   0,   0   }, /* PC7 */
+	/* PC6  */ {   0,   0,   0,   1,   0,   0   }, /* PC6 */
+	/* PC5  */ {   0,   0,   0,   1,   0,   0   }, /* PC5 */
+	/* PC4  */ {   0,   0,   0,   1,   0,   0   }, /* PC4 */
+	/* PC3  */ {   0,   0,   0,   1,   0,   0   }, /* PC3 */
+	/* PC2  */ {   0,   0,   0,   1,   0,   1   }, /* ENET FDE */
+	/* PC1  */ {   0,   0,   0,   1,   0,   0   }, /* ENET DSQE */
+	/* PC0  */ {   0,   0,   0,   1,   0,   0   }, /* ENET LBK */
+    },
+
+    /* Port D */
+    {   /*	      conf ppar psor pdir podr pdat */
+	/* PD31 */ {   1,   1,   0,   0,   0,   0   }, /* SCC1 EN RxD */
+	/* PD30 */ {   1,   1,   1,   1,   0,   0   }, /* SCC1 EN TxD */
+	/* PD29 */ {   0,   1,   0,   1,   0,   0   }, /* SCC1 EN TENA */
+	/* PD28 */ {   0,   1,   0,   0,   0,   0   }, /* PD28 */
+	/* PD27 */ {   0,   1,   1,   1,   0,   0   }, /* PD27 */
+	/* PD26 */ {   0,   0,   0,   1,   0,   0   }, /* PD26 */
+	/* PD25 */ {   0,   0,   0,   1,   0,   0   }, /* PD25 */
+	/* PD24 */ {   0,   0,   0,   1,   0,   0   }, /* PD24 */
+	/* PD23 */ {   0,   0,   0,   1,   0,   0   }, /* PD23 */
+	/* PD22 */ {   0,   0,   0,   1,   0,   0   }, /* PD22 */
+	/* PD21 */ {   0,   0,   0,   1,   0,   0   }, /* PD21 */
+	/* PD20 */ {   0,   0,   0,   1,   0,   0   }, /* PD20 */
+	/* PD19 */ {   0,   0,   0,   1,   0,   0   }, /* PD19 */
+	/* PD18 */ {   0,   0,   0,   1,   0,   0   }, /* PD18 */
+	/* PD17 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXPRTY */
+	/* PD16 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXPRTY */
+	/* PD15 */ {   1,   1,   1,   0,   1,   0   }, /* I2C SDA */
+	/* PD14 */ {   1,   1,   1,   0,   1,   0   }, /* I2C SCL */
+	/* PD13 */ {   0,   0,   0,   0,   0,   0   }, /* PD13 */
+	/* PD12 */ {   0,   0,   0,   0,   0,   0   }, /* PD12 */
+	/* PD11 */ {   0,   0,   0,   0,   0,   0   }, /* PD11 */
+	/* PD10 */ {   0,   0,   0,   0,   0,   0   }, /* PD10 */
+	/* PD9  */ {   1,   1,   0,   1,   0,   0   }, /* SMC1 TXD */
+	/* PD8  */ {   1,   1,   0,   0,   0,   0   }, /* SMC1 RXD */
+	/* PD7  */ {   0,   0,   0,   1,   0,   1   }, /* PD7 */
+	/* PD6  */ {   0,   0,   0,   1,   0,   1   }, /* PD6 */
+	/* PD5  */ {   0,   0,   0,   1,   0,   1   }, /* PD5 */
+	/* PD4  */ {   0,   0,   0,   1,   0,   1   }, /* PD4 */
+	/* PD3  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
+	/* PD2  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
+	/* PD1  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
+	/* PD0  */ {   0,   0,   0,   0,   0,   0   }  /* pin doesn't exist */
+    }
+};
+
+typedef struct bscr_ {
+	unsigned long bcsr0;
+	unsigned long bcsr1;
+	unsigned long bcsr2;
+	unsigned long bcsr3;
+	unsigned long bcsr4;
+	unsigned long bcsr5;
+	unsigned long bcsr6;
+	unsigned long bcsr7;
+} bcsr_t;
+
+void reset_phy(void)
+{
+    volatile bcsr_t  *bcsr           = (bcsr_t *)CFG_BCSR;
+
+    /* reset the FEC port */
+    bcsr->bcsr1                    &= ~FETH_RST;
+    bcsr->bcsr1                    |= FETH_RST;
+}
+
+
+int board_pre_init (void)
+{
+    volatile bcsr_t  *bcsr         = (bcsr_t *)CFG_BCSR;
+    bcsr->bcsr1                    = ~FETHIEN & ~RS232EN_1;
+
+    return 0;
+}
+
+int checkboard(void)
+{
+    puts ("Board: Motorola MPC8266ADS\n");
+    return 0;
+}
+
+long int initdram(int board_type)
+{
+	/* Autoinit part stolen from board/sacsng/sacsng.c */
+    volatile immap_t *immap         = (immap_t *)CFG_IMMR;
+    volatile memctl8260_t *memctl   = &immap->im_memctl;
+    volatile uchar c = 0xff;
+    volatile uchar *ramaddr = (uchar *)(CFG_SDRAM_BASE + 0x8);
+    uint  psdmr = CFG_PSDMR;
+    int i;
+
+    uint   psrt = 14;					/* for no SPD */
+    uint   chipselects = 1;				/* for no SPD */
+    uint   sdram_size = CFG_SDRAM_SIZE * 1024 * 1024;	/* for no SPD */
+    uint   or = CFG_OR2_PRELIM;				/* for no SPD */
+    uint   data_width;
+    uint   rows;
+    uint   banks;
+    uint   cols;
+    uint   caslatency;
+    uint   width;
+    uint   rowst;
+    uint   sdam;
+    uint   bsma;
+    uint   sda10;
+    u_char spd_size;
+    u_char data;
+    u_char cksum;
+    int    j;
+
+    /* Keep the compiler from complaining about potentially uninitialized vars */
+    data_width = chipselects = rows = banks = cols = caslatency = psrt = 0;
+
+    /*
+     * Read the SDRAM SPD EEPROM via I2C.
+     */
+	i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
+
+    i2c_read(SDRAM_SPD_ADDR, 0, 1, &data, 1);
+    spd_size = data;
+    cksum    = data;
+    for(j = 1; j < 64; j++) 
+	{	/* read only the checksummed bytes */
+	/* note: the I2C address autoincrements when alen == 0 */
+		i2c_read(SDRAM_SPD_ADDR, 0, 0, &data, 1);
+		/*printf("addr %d = 0x%02x\n", j, data);*/
+		if(j ==  5) chipselects = data & 0x0F;
+		else if(j ==  6) data_width  = data;
+		else if(j ==  7) data_width |= data << 8;
+		else if(j ==  3) rows        = data & 0x0F;
+		else if(j ==  4) cols        = data & 0x0F;
+		else if(j == 12) 
+		{
+			/*
+				 * Refresh rate: this assumes the prescaler is set to
+			 * approximately 1uSec per tick.
+			 */
+			switch(data & 0x7F) 
+			{
+					default:
+					case 0:  psrt =  16; /*  15.625uS */  break;
+					case 1:  psrt =   2;  /*   3.9uS   */  break;
+					case 2:  psrt =   6;  /*   7.8uS   */  break;
+					case 3:  psrt =  29;  /*  31.3uS   */  break;
+					case 4:  psrt =  60;  /*  62.5uS   */  break;
+					case 5:  psrt = 120;  /* 125uS     */  break;
+			}
+		}
+		else if(j == 17) banks       = data;
+		else if(j == 18) 
+		{
+			caslatency = 3; /* default CL */
+#		    if(PESSIMISTIC_SDRAM)
+				if((data & 0x04) != 0) caslatency = 3;
+				else if((data & 0x02) != 0) caslatency = 2;
+				else if((data & 0x01) != 0) caslatency = 1;
+#			else
+				if((data & 0x01) != 0) caslatency = 1;
+				else if((data & 0x02) != 0) caslatency = 2;
+				else if((data & 0x04) != 0) caslatency = 3;
+#			endif
+			else 
+			{
+			printf ("WARNING: Unknown CAS latency 0x%02X, using 3\n",
+					data);
+			}
+		}
+		else if(j == 63) 
+		{
+			if(data != cksum) 
+			{
+				printf ("WARNING: Configuration data checksum failure:"
+					" is 0x%02x, calculated 0x%02x\n",
+				data, cksum);
+			}
+		}
+		cksum += data;
+    }
+
+    /* We don't trust CL less than 2 (only saw it on an old 16MByte DIMM) */
+    if(caslatency < 2) {
+		printf("CL was %d, forcing to 2\n", caslatency);
+		caslatency = 2;
+    }
+    if(rows > 14) {
+		printf("This doesn't look good, rows = %d, should be <= 14\n", rows);
+		rows = 14;
+    }
+    if(cols > 11) {
+		printf("This doesn't look good, columns = %d, should be <= 11\n", cols);
+		cols = 11;
+    }
+
+    if((data_width != 64) && (data_width != 72))
+    {
+		printf("WARNING: SDRAM width unsupported, is %d, expected 64 or 72.\n",
+			data_width);
+    }
+    width = 3;		/* 2^3 = 8 bytes = 64 bits wide */
+    /*
+     * Convert banks into log2(banks)
+     */
+    if     (banks == 2)	banks = 1;
+    else if(banks == 4)	banks = 2;
+    else if(banks == 8)	banks = 3;
+
+
+    sdram_size = 1 << (rows + cols + banks + width);
+
+#if(CONFIG_PBI == 0)	/* bank-based interleaving */
+    rowst = ((32 - 6) - (rows + cols + width)) * 2;
+#else
+    rowst = 32 - (rows + banks + cols + width);
+#endif
+
+   or = ~(sdram_size - 1)    |	/* SDAM address mask	*/
+	  ((banks-1) << 13)   |	/* banks per device	*/
+	  (rowst << 9)        |	/* rowst		*/
+	  ((rows - 9) << 6);	/* numr			*/
+
+
+    /*printf("memctl->memc_or2 = 0x%08x\n", or);*/
+
+    /*
+     * SDAM specifies the number of columns that are multiplexed
+     * (reference AN2165/D), defined to be (columns - 6) for page
+     * interleave, (columns - 8) for bank interleave.
+     *
+     * BSMA is 14 - max(rows, cols).  The bank select lines come
+     * into play above the highest "address" line going into the
+     * the SDRAM.
+     */
+#if(CONFIG_PBI == 0)	/* bank-based interleaving */
+    sdam = cols - 8;
+    bsma = ((31 - width) - 14) - ((rows > cols) ? rows : cols);
+    sda10 = sdam + 2;
+#else
+    sdam = cols - 6;
+    bsma = ((31 - width) - 14) - ((rows > cols) ? rows : cols);
+    sda10 = sdam;
+#endif
+#if(PESSIMISTIC_SDRAM)
+    psdmr = (CONFIG_PBI              |\
+	     PSDMR_RFEN              |\
+	     PSDMR_RFRC_16_CLK       |\
+	     PSDMR_PRETOACT_8W       |\
+	     PSDMR_ACTTORW_8W        |\
+	     PSDMR_WRC_4C            |\
+	     PSDMR_EAMUX             |\
+             PSDMR_BUFCMD)           |\
+	     caslatency              |\
+	     ((caslatency - 1) << 6) |	/* LDOTOPRE is CL - 1 */ \
+	     (sdam << 24)            |\
+	     (bsma << 21)            |\
+	     (sda10 << 18);
+#else
+    psdmr = (CONFIG_PBI              |\
+	     PSDMR_RFEN              |\
+	     PSDMR_RFRC_7_CLK        |\
+	     PSDMR_PRETOACT_3W       |	/* 1 for 7E parts (fast PC-133) */ \
+	     PSDMR_ACTTORW_2W        |	/* 1 for 7E parts (fast PC-133) */ \
+	     PSDMR_WRC_1C            |	/* 1 clock + 7nSec */
+	     EAMUX                   |\
+             BUFCMD)                 |\
+	     caslatency              |\
+	     ((caslatency - 1) << 6) |	/* LDOTOPRE is CL - 1 */ \
+	     (sdam << 24)            |\
+	     (bsma << 21)            |\
+	     (sda10 << 18);
+#endif
+	/*printf("psdmr = 0x%08x\n", psdmr);*/
+
+    /*
+     * Quote from 8260 UM (10.4.2 SDRAM Power-On Initialization, 10-35):
+     *
+     * "At system reset, initialization software must set up the
+     *  programmable parameters in the memory controller banks registers
+     *  (ORx, BRx, P/LSDMR). After all memory parameters are configured,
+     *  system software should execute the following initialization sequence
+     *  for each SDRAM device.
+     *
+     *  1. Issue a PRECHARGE-ALL-BANKS command
+     *  2. Issue eight CBR REFRESH commands
+     *  3. Issue a MODE-SET command to initialize the mode register
+     *
+     * Quote from Micron MT48LC8M16A2 data sheet:
+     *
+     *  "...the SDRAM requires a 100uS delay prior to issuing any
+     *  command other than a COMMAND INHIBIT or NOP.  Starting at some
+     *  point during this 100uS period and continuing at least through
+     *  the end of this period, COMMAND INHIBIT or NOP commands should
+     *  be applied."
+     *
+     *  "Once the 100uS delay has been satisfied with at least one COMMAND
+     *  INHIBIT or NOP command having been applied, a /PRECHARGE command/
+     *  should be applied.  All banks must then be precharged, thereby
+     *  placing the device in the all banks idle state."
+     *
+     *  "Once in the idle state, /two/ AUTO REFRESH cycles must be
+     *  performed.  After the AUTO REFRESH cycles are complete, the
+     *  SDRAM is ready for mode register programming."
+     *
+     *  (/emphasis/ mine, gvb)
+     *
+     *  The way I interpret this, Micron start up sequence is:
+     *  1. Issue a PRECHARGE-BANK command (initial precharge)
+     *  2. Issue a PRECHARGE-ALL-BANKS command ("all banks ... precharged")
+     *  3. Issue two (presumably, doing eight is OK) CBR REFRESH commands
+     *  4. Issue a MODE-SET command to initialize the mode register
+     *
+     *  --------
+     *
+     *  The initial commands are executed by setting P/LSDMR[OP] and
+     *  accessing the SDRAM with a single-byte transaction."
+     *
+     * The appropriate BRx/ORx registers have already been set when we
+     * get here. The SDRAM can be accessed at the address CFG_SDRAM_BASE.
+     */
+#if 1
+    memctl->memc_mptpr = CFG_MPTPR;
+    memctl->memc_psrt  = psrt;
+
+    memctl->memc_psdmr = psdmr | PSDMR_OP_PREA;
+    *ramaddr = c;
+
+    memctl->memc_psdmr = psdmr | PSDMR_OP_CBRR;
+    for (i = 0; i < 8; i++)
+	*ramaddr = c;
+
+    memctl->memc_psdmr = psdmr | PSDMR_OP_MRW;
+    *ramaddr = c;
+
+    memctl->memc_psdmr = psdmr | PSDMR_OP_NORM | PSDMR_RFEN;
+    *ramaddr = c;
+
+    /*
+     * Do it a second time for the second set of chips if the DIMM has
+     * two chip selects (double sided).
+     */
+    if(chipselects > 1) 
+	{
+        ramaddr += sdram_size;
+
+		memctl->memc_br3 = CFG_BR3_PRELIM + sdram_size;
+		memctl->memc_or3 = or;
+
+		memctl->memc_psdmr = psdmr | PSDMR_OP_PREA;
+		*ramaddr = c;
+
+		memctl->memc_psdmr = psdmr | PSDMR_OP_CBRR;
+		for (i = 0; i < 8; i++)
+			*ramaddr = c;
+
+		memctl->memc_psdmr = psdmr | PSDMR_OP_MRW;
+		*ramaddr = c;
+
+		memctl->memc_psdmr = psdmr | PSDMR_OP_NORM | PSDMR_RFEN;
+		*ramaddr = c;
+    }
+#endif
+	/*
+    printf("memctl->memc_mptpr = 0x%08x\n", CFG_MPTPR);
+    printf("memctl->memc_psrt  = 0x%08x\n", psrt);
+
+    printf("memctl->memc_psdmr = 0x%08x\n", psdmr | PSDMR_OP_PREA);
+    printf("ramaddr = 0x%08x\n", ramaddr);
+
+    printf("memctl->memc_psdmr = 0x%08x\n", psdmr | PSDMR_OP_CBRR);
+
+    printf("memctl->memc_psdmr = 0x%08x\n", psdmr | PSDMR_OP_MRW);
+
+    printf("memctl->memc_psdmr = 0x%08x\n", psdmr | PSDMR_OP_NORM | PSDMR_RFEN);
+
+    immap->im_siu_conf.sc_ppc_acr   = 0x00000002;
+    immap->im_siu_conf.sc_ppc_alrh  = 0x01267893;
+    immap->im_siu_conf.sc_tescr1    = 0x00004000;
+	*/
+#if 0
+    /* init sdram dimm */
+    ramaddr                         = (uchar *)CFG_SDRAM_BASE;
+    memctl->memc_psrt               = 0x00000010;
+    immap->im_memctl.memc_or2       = 0xFF000CA0;
+    immap->im_memctl.memc_br2       = 0x00000041;
+    memctl->memc_psdmr              = 0x296EB452;
+    *ramaddr                        = c;
+    memctl->memc_psdmr              = 0x096EB452;
+    for (i = 0; i < 8; i++)
+        *ramaddr                    = c;
+
+    memctl->memc_psdmr              = 0x196EB452;
+    *ramaddr                        = c;
+    memctl->memc_psdmr              = 0x416EB452;
+    *ramaddr                        = c;
+#endif	
+	/* print info */
+	printf("SDRAM configuration read from SPD\n");
+	printf("\tSize per side = %dMB\n", sdram_size >> 20);
+	printf("\tOrganization: %d sides, %d banks, %d Columns, %d Rows, Data width = %d bits\n", chipselects, 1<<(banks), cols, rows, data_width);
+	printf("\tRefresh rate = %d, CAS latency = %d\n", psrt, caslatency);
+	printf("\tTotal size: ");
+
+    return (sdram_size * chipselects);
+	/*return (16 * 1024 * 1024);*/
+}