board/uc100/uc100.c - u-boot - Git at Google

 /*
  * (C) Copyright 2000-2004
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  *
  * 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
  */

 #if 0
 #define DEBUG
 #endif

 #include <common.h>
 #include <mpc8xx.h>
 #include <i2c.h>
 #include <miiphy.h>

 int fec8xx_miiphy_write(char *devname, unsigned char  addr,
 		unsigned char  reg, unsigned short value);

 /*********************************************************************/
 /* UPMA Pre Initilization Table by WV (Miron MT48LC16M16A2-7E B)     */
 /*********************************************************************/
 const uint sdram_init_upm_table[] = {
 	/* SDRAM Initialisation Sequence (offset 0 in UPMA RAM) WV */
 	/* NOP    - Precharge - AutoRefr  - NOP       - NOP        */
 	/* NOP    - AutoRefr  - NOP                                */
 	/* NOP    - NOP       - LoadModeR - NOP       - Active     */
 	/* Position of Single Read                                 */
 	0x0ffffc04, 0x0ff77c04, 0x0ff5fc04, 0x0ffffc04, 0x0ffffc04,
 	0x0ffffc04, 0x0ff5fc04, 0x0ffffc04,

 	/* Burst Read. (offset 8 in UPMA RAM)     */
 	/* Cycle lent for Initialisation WV */
 	0x0ffffc04, 0x0ffffc34, 0x0f057c34, 0x0ffffc30, 0x1ff7fc05,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

 	/* Single Write. (offset 18 in UPMA RAM) */
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

 	/* Burst Write. (offset 20 in UPMA RAM) */
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

 	/* Refresh  (offset 30 in UPMA RAM) */
 	0x0FF77C04, 0x0FFFFC04, 0x0FF5FC84, 0x0FFFFC04, 0x0FFFFC04,
 	0x0FFFFC84, 0x1FFFFC05, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF,

 	/* Exception. (offset 3c in UPMA RAM) */
 	0x7FFFFC05, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 };

 /*********************************************************************/
 /* UPMA initilization table.                                         */
 /*********************************************************************/
 const uint sdram_upm_table[] = {
 	/* single read. (offset 0 in UPMA RAM) */
 	0x0F07FC04, 0x0FFFFC04, 0x00BDFC04, 0x0FF77C00, 0x1FFFFC05,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,     /* 0x05-0x07 new WV */

 	/* Burst Read. (offset 8 in UPMA RAM) */
 	0x0F07FC04, 0x0FFFFC04, 0x00BDFC04, 0x00FFFC00, 0x00FFFC00,
 	0x00FFFC00, 0x0FF77C00, 0x1FFFFC05, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

 	/* Single Write. (offset 18 in UPMA RAM) */
 	0x0F07FC04, 0x0FFFFC00, 0x00BD7C04, 0x0FFFFC04, 0x0FF77C04,
 	0x1FFFFC05, 0xFFFFFFFF, 0xFFFFFFFF,

 	/* Burst Write. (offset 20 in UPMA RAM) */
 	0x0F07FC04, 0x0FFFFC00, 0x00BD7C00, 0x00FFFC00, 0x00FFFC00,
 	0x00FFFC04, 0x0FFFFC04, 0x0FF77C04, 0x1FFFFC05, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

 	/* Refresh  (offset 30 in UPMA RAM) */
 	0x0FF77C04, 0x0FFFFC04, 0x0FF5FC84, 0x0FFFFC04, 0x0FFFFC04,
 	0x0FFFFC84, 0x1FFFFC05, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF,

 	/* Exception. (offset 3c in UPMA RAM) */
 	0x7FFFFC05, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, /* 0x3C new WV */
 };

 /*********************************************************************/
 /* UPMB initilization table.                                         */
 /*********************************************************************/
 const uint mpm_upm_table[] = {
 	/*  single read. (offset 0 in upm RAM) */
 	0x8FF00004, 0x0FF00004, 0x0FF81004, 0x1FF00001,
 	0x1FF00001, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

 	/* burst read. (Offset 8 in upm RAM)   */
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

 	/* single write. (Offset 0x18 in upm RAM) */
 	0x8FF00004, 0x0FF00004, 0x0FF81004, 0x0FF00004,
 	0x0FF00004, 0x1FF00001, 0xFFFFFFFF, 0xFFFFFFFF,

 	/*  burst write. (Offset 0x20 in upm RAM) */
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

 	/* Refresh cycle, offset 0x30 */
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

 	/* Exception, 0ffset 0x3C */
 	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
 };


 int board_switch(void)
 {
 	volatile pcmconf8xx_t	*pcmp;

 	pcmp  = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));

 	return ((pcmp->pcmc_pipr >> 24) & 0xf);
 }


 /*
  * Check Board Identity:
  */
 int checkboard (void)
 {
 	char str[64];
 	int i = getenv_r ("serial#", str, sizeof(str));

 	puts ("Board: ");

 	if (i == -1) {
 		puts ("### No HW ID - assuming UC100");
 	} else {
 		puts(str);
 	}

 	printf (" (SWITCH=%1X)\n", board_switch());

 	return 0;
 }


 /*
  * Initialize SDRAM
  */
 phys_size_t initdram (int board_type)
 {
 	volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
 	volatile memctl8xx_t *memctl = &immap->im_memctl;

 	/*---------------------------------------------------------------------*/
 	/* Initialize the UPMA/UPMB registers with the appropriate table.      */
 	/*---------------------------------------------------------------------*/
 	upmconfig (UPMA, (uint *) sdram_init_upm_table,
 		   sizeof (sdram_init_upm_table) / sizeof (uint));
 	upmconfig (UPMB, (uint *) mpm_upm_table,
 		   sizeof (mpm_upm_table) / sizeof (uint));

 	/*---------------------------------------------------------------------*/
 	/* Memory Periodic Timer Prescaler: divide by 16                       */
 	/*---------------------------------------------------------------------*/
 	memctl->memc_mptpr = 0x0200; /* Divide by 32 WV */

 	memctl->memc_mamr = CONFIG_SYS_MAMR_VAL & 0xFF7FFFFF; /* Bit 8 := "0" Kein Refresh WV */
 	memctl->memc_mbmr = CONFIG_SYS_MBMR_VAL;

 	/*---------------------------------------------------------------------*/
 	/* Initialize the Memory Controller registers, MPTPR, Chip Select 1    */
 	/* for SDRAM                                                           */
 	/*                                                                     */
 	/* NOTE: The refresh rate in MAMR reg is set according to the lowest   */
 	/*       clock rate (16.67MHz) to allow proper operation for all ADS   */
 	/*       clock frequencies.                                            */
 	/*---------------------------------------------------------------------*/
 	memctl->memc_or1 = CONFIG_SYS_OR1_PRELIM;
 	memctl->memc_br1 = CONFIG_SYS_BR1_PRELIM;

 	/*-------------------------------------------------------------------*/
 	/* Wait at least 200 usec for DRAM to stabilize, this magic number   */
 	/* obtained from the init code.                                      */
 	/*-------------------------------------------------------------------*/
 	udelay(200);

 	memctl->memc_mamr = (memctl->memc_mamr | 0x04) & ~0x08;

 	memctl->memc_br1 = CONFIG_SYS_BR1_PRELIM;
 	memctl->memc_or1 = CONFIG_SYS_OR1_PRELIM;

 	/*---------------------------------------------------------------------*/
 	/* run MRS command in location 5-8 of UPMB.                            */
 	/*---------------------------------------------------------------------*/
 	memctl->memc_mar = 0x88;
 	/* RUN UPMA on CS1 1-time from UPMA addr 0x05 */

 	memctl->memc_mcr = 0x80002100;
 	/* RUN UPMA on CS1 1-time from UPMA addr 0x00 WV */

 	udelay(200);

 	/*---------------------------------------------------------------------*/
 	/* Initialisation for normal access WV                                 */
 	/*---------------------------------------------------------------------*/

 	/*---------------------------------------------------------------------*/
 	/* Initialize the UPMA register with the appropriate table.            */
 	/*---------------------------------------------------------------------*/
 	upmconfig (UPMA, (uint *) sdram_upm_table,
 		   sizeof (sdram_upm_table) / sizeof (uint));

 	/*---------------------------------------------------------------------*/
 	/* rerstore MBMR value (4-beat refresh burst.)                         */
 	/*---------------------------------------------------------------------*/
 	memctl->memc_mamr = CONFIG_SYS_MAMR_VAL | 0x00800000; /* Bit 8 := "1" Refresh Enable WV */

 	udelay(200);

 	return (64 * 1024 * 1024); /* fixed setup for 64MBytes! */
 }


 int misc_init_r (void)
 {
 	uchar val;

 	/*
 	 * Make sure that RTC has clock output enabled (triggers watchdog!)
 	 */
 	val = i2c_reg_read (CONFIG_SYS_I2C_RTC_ADDR, 0x0D);
 	val |= 0x80;
 	i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, 0x0D, val);

 	/*
 	 * Configure PHY to setup LED's correctly and use 100MBit, FD
 	 */
 	mii_init();

 	/* disable auto-negotiation, 100mbit, full-duplex */
 	fec8xx_miiphy_write(NULL, 0, PHY_BMCR, 0x2100);

 	/* set LED's to Link, Transmit, Receive           */
 	fec8xx_miiphy_write(NULL,  0, PHY_FCSCR, 0x4122);

 	return 0;
 }


 #ifdef CONFIG_POST
 /*
  * Returns 1 if keys pressed to start the power-on long-running tests
  * Called from board_init_f().
  */
 int post_hotkeys_pressed (void)
 {
 	return 0;		/* No hotkeys supported */
 }
 #endif
	/*
	* (C) Copyright 2000-2004
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*
	* 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
	*/

	#if 0
	#define DEBUG
	#endif

	#include <common.h>
	#include <mpc8xx.h>
	#include <i2c.h>
	#include <miiphy.h>

	int fec8xx_miiphy_write(char *devname, unsigned char addr,
	unsigned char reg, unsigned short value);

	/*********************************************************************/
	/* UPMA Pre Initilization Table by WV (Miron MT48LC16M16A2-7E B) */
	/*********************************************************************/
	const uint sdram_init_upm_table[] = {
	/* SDRAM Initialisation Sequence (offset 0 in UPMA RAM) WV */
	/* NOP - Precharge - AutoRefr - NOP - NOP */
	/* NOP - AutoRefr - NOP */
	/* NOP - NOP - LoadModeR - NOP - Active */
	/* Position of Single Read */
	0x0ffffc04, 0x0ff77c04, 0x0ff5fc04, 0x0ffffc04, 0x0ffffc04,
	0x0ffffc04, 0x0ff5fc04, 0x0ffffc04,

	/* Burst Read. (offset 8 in UPMA RAM) */
	/* Cycle lent for Initialisation WV */
	0x0ffffc04, 0x0ffffc34, 0x0f057c34, 0x0ffffc30, 0x1ff7fc05,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

	/* Single Write. (offset 18 in UPMA RAM) */
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

	/* Burst Write. (offset 20 in UPMA RAM) */
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

	/* Refresh (offset 30 in UPMA RAM) */
	0x0FF77C04, 0x0FFFFC04, 0x0FF5FC84, 0x0FFFFC04, 0x0FFFFC04,
	0x0FFFFC84, 0x1FFFFC05, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF,

	/* Exception. (offset 3c in UPMA RAM) */
	0x7FFFFC05, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	};

	/*********************************************************************/
	/* UPMA initilization table. */
	/*********************************************************************/
	const uint sdram_upm_table[] = {
	/* single read. (offset 0 in UPMA RAM) */
	0x0F07FC04, 0x0FFFFC04, 0x00BDFC04, 0x0FF77C00, 0x1FFFFC05,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, /* 0x05-0x07 new WV */

	/* Burst Read. (offset 8 in UPMA RAM) */
	0x0F07FC04, 0x0FFFFC04, 0x00BDFC04, 0x00FFFC00, 0x00FFFC00,
	0x00FFFC00, 0x0FF77C00, 0x1FFFFC05, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

	/* Single Write. (offset 18 in UPMA RAM) */
	0x0F07FC04, 0x0FFFFC00, 0x00BD7C04, 0x0FFFFC04, 0x0FF77C04,
	0x1FFFFC05, 0xFFFFFFFF, 0xFFFFFFFF,

	/* Burst Write. (offset 20 in UPMA RAM) */
	0x0F07FC04, 0x0FFFFC00, 0x00BD7C00, 0x00FFFC00, 0x00FFFC00,
	0x00FFFC04, 0x0FFFFC04, 0x0FF77C04, 0x1FFFFC05, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

	/* Refresh (offset 30 in UPMA RAM) */
	0x0FF77C04, 0x0FFFFC04, 0x0FF5FC84, 0x0FFFFC04, 0x0FFFFC04,
	0x0FFFFC84, 0x1FFFFC05, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF,

	/* Exception. (offset 3c in UPMA RAM) */
	0x7FFFFC05, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, /* 0x3C new WV */
	};

	/*********************************************************************/
	/* UPMB initilization table. */
	/*********************************************************************/
	const uint mpm_upm_table[] = {
	/* single read. (offset 0 in upm RAM) */
	0x8FF00004, 0x0FF00004, 0x0FF81004, 0x1FF00001,
	0x1FF00001, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

	/* burst read. (Offset 8 in upm RAM) */
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

	/* single write. (Offset 0x18 in upm RAM) */
	0x8FF00004, 0x0FF00004, 0x0FF81004, 0x0FF00004,
	0x0FF00004, 0x1FF00001, 0xFFFFFFFF, 0xFFFFFFFF,

	/* burst write. (Offset 0x20 in upm RAM) */
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

	/* Refresh cycle, offset 0x30 */
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,

	/* Exception, 0ffset 0x3C */
	0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF,
	};


	int board_switch(void)
	{
	volatile pcmconf8xx_t *pcmp;

	pcmp = (pcmconf8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_pcmcia));

	return ((pcmp->pcmc_pipr >> 24) & 0xf);
	}


	/*
	* Check Board Identity:
	*/
	int checkboard (void)
	{
	char str[64];
	int i = getenv_r ("serial#", str, sizeof(str));

	puts ("Board: ");

	if (i == -1) {
	puts ("### No HW ID - assuming UC100");
	} else {
	puts(str);
	}

	printf (" (SWITCH=%1X)\n", board_switch());

	return 0;
	}


	/*
	* Initialize SDRAM
	*/
	phys_size_t initdram (int board_type)
	{
	volatile immap_t immap = (immap_t ) CONFIG_SYS_IMMR;
	volatile memctl8xx_t *memctl = &immap->im_memctl;

	/---------------------------------------------------------------------/
	/* Initialize the UPMA/UPMB registers with the appropriate table. */
	/---------------------------------------------------------------------/
	upmconfig (UPMA, (uint *) sdram_init_upm_table,
	sizeof (sdram_init_upm_table) / sizeof (uint));
	upmconfig (UPMB, (uint *) mpm_upm_table,
	sizeof (mpm_upm_table) / sizeof (uint));

	/---------------------------------------------------------------------/
	/* Memory Periodic Timer Prescaler: divide by 16 */
	/---------------------------------------------------------------------/
	memctl->memc_mptpr = 0x0200; /* Divide by 32 WV */

	memctl->memc_mamr = CONFIG_SYS_MAMR_VAL & 0xFF7FFFFF; /* Bit 8 := "0" Kein Refresh WV */
	memctl->memc_mbmr = CONFIG_SYS_MBMR_VAL;

	/---------------------------------------------------------------------/
	/* Initialize the Memory Controller registers, MPTPR, Chip Select 1 */
	/* for SDRAM */
	/* */
	/* NOTE: The refresh rate in MAMR reg is set according to the lowest */
	/* clock rate (16.67MHz) to allow proper operation for all ADS */
	/* clock frequencies. */
	/---------------------------------------------------------------------/
	memctl->memc_or1 = CONFIG_SYS_OR1_PRELIM;
	memctl->memc_br1 = CONFIG_SYS_BR1_PRELIM;

	/-------------------------------------------------------------------/
	/* Wait at least 200 usec for DRAM to stabilize, this magic number */
	/* obtained from the init code. */
	/-------------------------------------------------------------------/
	udelay(200);

	memctl->memc_mamr = (memctl->memc_mamr \| 0x04) & ~0x08;

	memctl->memc_br1 = CONFIG_SYS_BR1_PRELIM;
	memctl->memc_or1 = CONFIG_SYS_OR1_PRELIM;

	/---------------------------------------------------------------------/
	/* run MRS command in location 5-8 of UPMB. */
	/---------------------------------------------------------------------/
	memctl->memc_mar = 0x88;
	/* RUN UPMA on CS1 1-time from UPMA addr 0x05 */

	memctl->memc_mcr = 0x80002100;
	/* RUN UPMA on CS1 1-time from UPMA addr 0x00 WV */

	udelay(200);

	/---------------------------------------------------------------------/
	/* Initialisation for normal access WV */
	/---------------------------------------------------------------------/

	/---------------------------------------------------------------------/
	/* Initialize the UPMA register with the appropriate table. */
	/---------------------------------------------------------------------/
	upmconfig (UPMA, (uint *) sdram_upm_table,
	sizeof (sdram_upm_table) / sizeof (uint));

	/---------------------------------------------------------------------/
	/* rerstore MBMR value (4-beat refresh burst.) */
	/---------------------------------------------------------------------/
	memctl->memc_mamr = CONFIG_SYS_MAMR_VAL \| 0x00800000; /* Bit 8 := "1" Refresh Enable WV */

	udelay(200);

	return (64 * 1024 * 1024); /* fixed setup for 64MBytes! */
	}


	int misc_init_r (void)
	{
	uchar val;

	/*
	* Make sure that RTC has clock output enabled (triggers watchdog!)
	*/
	val = i2c_reg_read (CONFIG_SYS_I2C_RTC_ADDR, 0x0D);
	val \|= 0x80;
	i2c_reg_write (CONFIG_SYS_I2C_RTC_ADDR, 0x0D, val);

	/*
	* Configure PHY to setup LED's correctly and use 100MBit, FD
	*/
	mii_init();

	/* disable auto-negotiation, 100mbit, full-duplex */
	fec8xx_miiphy_write(NULL, 0, PHY_BMCR, 0x2100);

	/* set LED's to Link, Transmit, Receive */
	fec8xx_miiphy_write(NULL, 0, PHY_FCSCR, 0x4122);

	return 0;
	}


	#ifdef CONFIG_POST
	/*
	* Returns 1 if keys pressed to start the power-on long-running tests
	* Called from board_init_f().
	*/
	int post_hotkeys_pressed (void)
	{
	return 0; /* No hotkeys supported */
	}
	#endif