board/xpedite1k/xpedite1k.c - platform/external/u-boot - Gitiles

 /*
  *  Copyright (C) 2003 Travis B. Sawyer	 <travis.sawyer@sandburst.com>
  *
  * 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 <asm/processor.h>
 #include <spd_sdram.h>
 #include <i2c.h>

 DECLARE_GLOBAL_DATA_PTR;

 #define BOOT_SMALL_FLASH	32	/* 00100000 */
 #define FLASH_ONBD_N		2	/* 00000010 */
 #define FLASH_SRAM_SEL		1	/* 00000001 */

 long int fixed_sdram (void);

 int board_early_init_f(void)
 {
 	unsigned long sdrreg;
 	/* TBS:	 Setup the GPIO access for the user LEDs */
 	mfsdr(sdr_pfc0, sdrreg);
 	mtsdr(sdr_pfc0, (sdrreg & ~0x00000100) | 0x00000E00);
 	out32(CFG_GPIO_BASE + 0x018, (USR_LED0 | USR_LED1 | USR_LED2 | USR_LED3));
 	LED0_OFF();
 	LED1_OFF();
 	LED2_OFF();
 	LED3_OFF();

 	/*--------------------------------------------------------------------
 	 * Setup the external bus controller/chip selects
 	 *-------------------------------------------------------------------*/

 	/* set the bus controller */
 	mtebc (pb0ap, 0x04055200);	/* FLASH/SRAM */
 	mtebc (pb0cr, 0xfff18000);	/* BAS=0xfff 1MB R/W 8-bit */
 	mtebc (pb1ap, 0x04055200);	/* FLASH/SRAM */
 	mtebc (pb1cr, 0xfe098000);	/* BAS=0xff8 16MB R/W 8-bit */

 	/*--------------------------------------------------------------------
 	 * Setup the interrupt controller polarities, triggers, etc.
 	 *-------------------------------------------------------------------*/
 	mtdcr (uic0sr, 0xffffffff);	/* clear all */
 	mtdcr (uic0er, 0x00000000);	/* disable all */
 	mtdcr (uic0cr, 0x00000003);	/* SMI & UIC1 crit are critical */
 	mtdcr (uic0pr, 0xfffffe00);	/* per ref-board manual */
 	mtdcr (uic0tr, 0x01c00000);	/* per ref-board manual */
 	mtdcr (uic0vr, 0x00000001);	/* int31 highest, base=0x000 */
 	mtdcr (uic0sr, 0xffffffff);	/* clear all */

 	mtdcr (uic1sr, 0xffffffff);	/* clear all */
 	mtdcr (uic1er, 0x00000000);	/* disable all */
 	mtdcr (uic1cr, 0x00000000);	/* all non-critical */
 	mtdcr (uic1pr, 0xffffc0ff);	/* per ref-board manual */
 	mtdcr (uic1tr, 0x00ff8000);	/* per ref-board manual */
 	mtdcr (uic1vr, 0x00000001);	/* int31 highest, base=0x000 */
 	mtdcr (uic1sr, 0xffffffff);	/* clear all */

 	mtdcr (uic2sr, 0xffffffff);	/* clear all */
 	mtdcr (uic2er, 0x00000000);	/* disable all */
 	mtdcr (uic2cr, 0x00000000);	/* all non-critical */
 	mtdcr (uic2pr, 0xffffffff);	/* per ref-board manual */
 	mtdcr (uic2tr, 0x00ff8c0f);	/* per ref-board manual */
 	mtdcr (uic2vr, 0x00000001);	/* int31 highest, base=0x000 */
 	mtdcr (uic2sr, 0xffffffff);	/* clear all */

 	mtdcr (uicb0sr, 0xfc000000); /* clear all */
 	mtdcr (uicb0er, 0x00000000); /* disable all */
 	mtdcr (uicb0cr, 0x00000000); /* all non-critical */
 	mtdcr (uicb0pr, 0xfc000000); /* */
 	mtdcr (uicb0tr, 0x00000000); /* */
 	mtdcr (uicb0vr, 0x00000001); /* */

 	LED0_ON();


 	return 0;
 }

 int checkboard (void)
 {
 	printf ("Board: XES XPedite1000 440GX\n");

 	return (0);
 }


 long int initdram (int board_type)
 {
 	long dram_size = 0;

 #if defined(CONFIG_SPD_EEPROM)
 	dram_size = spd_sdram ();
 #else
 	dram_size = fixed_sdram ();
 #endif
 	return dram_size;
 }


 #if defined(CFG_DRAM_TEST)
 int testdram (void)
 {
 	uint *pstart = (uint *) 0x00000000;
 	uint *pend = (uint *) 0x08000000;
 	uint *p;

 	for (p = pstart; p < pend; p++)
 		*p = 0xaaaaaaaa;

 	for (p = pstart; p < pend; p++) {
 		if (*p != 0xaaaaaaaa) {
 			printf ("SDRAM test fails at: %08x\n", (uint) p);
 			return 1;
 		}
 	}

 	for (p = pstart; p < pend; p++)
 		*p = 0x55555555;

 	for (p = pstart; p < pend; p++) {
 		if (*p != 0x55555555) {
 			printf ("SDRAM test fails at: %08x\n", (uint) p);
 			return 1;
 		}
 	}
 	return 0;
 }
 #endif

 #if !defined(CONFIG_SPD_EEPROM)
 /*************************************************************************
  *  fixed sdram init -- doesn't use serial presence detect.
  *
  *  Assumes:	128 MB, non-ECC, non-registered
  *		PLB @ 133 MHz
  *
  ************************************************************************/
 long int fixed_sdram (void)
 {
 	uint reg;

 	/*--------------------------------------------------------------------
 	 * Setup some default
 	 *------------------------------------------------------------------*/
 	mtsdram (mem_uabba, 0x00000000);	/* ubba=0 (default)		*/
 	mtsdram (mem_slio, 0x00000000);		/* rdre=0 wrre=0 rarw=0		*/
 	mtsdram (mem_devopt, 0x00000000);	/* dll=0 ds=0 (normal)		*/
 	mtsdram (mem_wddctr, 0x00000000);	/* wrcp=0 dcd=0			*/
 	mtsdram (mem_clktr, 0x40000000);	/* clkp=1 (90 deg wr) dcdt=0	*/

 	/*--------------------------------------------------------------------
 	 * Setup for board-specific specific mem
 	 *------------------------------------------------------------------*/
 	/*
 	 * Following for CAS Latency = 2.5 @ 133 MHz PLB
 	 */
 	mtsdram (mem_b0cr, 0x000a4001); /* SDBA=0x000 128MB, Mode 3, enabled */
 	mtsdram (mem_tr0, 0x410a4012);	/* WR=2	 WD=1 CL=2.5 PA=3 CP=4 LD=2 */
 	/* RA=10 RD=3			    */
 	mtsdram (mem_tr1, 0x8080082f);	/* SS=T2 SL=STAGE 3 CD=1 CT=0x02f   */
 	mtsdram (mem_rtr, 0x08200000);	/* Rate 15.625 ns @ 133 MHz PLB	    */
 	mtsdram (mem_cfg1, 0x00000000); /* Self-refresh exit, disable PM    */
 	udelay (400);			/* Delay 200 usecs (min)	    */

 	/*--------------------------------------------------------------------
 	 * Enable the controller, then wait for DCEN to complete
 	 *------------------------------------------------------------------*/
 	mtsdram (mem_cfg0, 0x86000000); /* DCEN=1, PMUD=1, 64-bit	    */
 	for (;;) {
 		mfsdram (mem_mcsts, reg);
 		if (reg & 0x80000000)
 			break;
 	}

 	return (128 * 1024 * 1024);	/* 128 MB			    */
 }
 #endif	/* !defined(CONFIG_SPD_EEPROM) */


 /*************************************************************************
  *  pci_pre_init
  *
  *  This routine is called just prior to registering the hose and gives
  *  the board the opportunity to check things. Returning a value of zero
  *  indicates that things are bad & PCI initialization should be aborted.
  *
  *	Different boards may wish to customize the pci controller structure
  *	(add regions, override default access routines, etc) or perform
  *	certain pre-initialization actions.
  *
  ************************************************************************/
 #if defined(CONFIG_PCI)
 int pci_pre_init(struct pci_controller * hose )
 {
 	unsigned long strap;
 	/* See if we're supposed to setup the pci */
 	mfsdr(sdr_sdstp1, strap);
 	if ((strap & 0x00010000) == 0) {
 		return (0);
 	}

 #if defined(CFG_PCI_FORCE_PCI_CONV)
 	/* Setup System Device Register PCIX0_XCR */
 	mfsdr(sdr_xcr, strap);
 	strap &= 0x0f000000;
 	mtsdr(sdr_xcr, strap);
 #endif
 	return 1;
 }
 #endif /* defined(CONFIG_PCI) */

 /*************************************************************************
  *  pci_target_init
  *
  *	The bootstrap configuration provides default settings for the pci
  *	inbound map (PIM). But the bootstrap config choices are limited and
  *	may not be sufficient for a given board.
  *
  ************************************************************************/
 #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
 void pci_target_init(struct pci_controller * hose )
 {
 	/*--------------------------------------------------------------------------+
 	 * Disable everything
 	 *--------------------------------------------------------------------------*/
 	out32r( PCIX0_PIM0SA, 0 ); /* disable */
 	out32r( PCIX0_PIM1SA, 0 ); /* disable */
 	out32r( PCIX0_PIM2SA, 0 ); /* disable */
 	out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */

 	/*--------------------------------------------------------------------------+
 	 * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
 	 * options to not support sizes such as 128/256 MB.
 	 *--------------------------------------------------------------------------*/
 	out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
 	out32r( PCIX0_PIM0LAH, 0 );
 	out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );

 	out32r( PCIX0_BAR0, 0 );

 	/*--------------------------------------------------------------------------+
 	 * Program the board's subsystem id/vendor id
 	 *--------------------------------------------------------------------------*/
 	out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
 	out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );

 	out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
 }
 #endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */


 /*************************************************************************
  *  is_pci_host
  *
  *	This routine is called to determine if a pci scan should be
  *	performed. With various hardware environments (especially cPCI and
  *	PPMC) it's insufficient to depend on the state of the arbiter enable
  *	bit in the strap register, or generic host/adapter assumptions.
  *
  *	Rather than hard-code a bad assumption in the general 440 code, the
  *	440 pci code requires the board to decide at runtime.
  *
  *	Return 0 for adapter mode, non-zero for host (monarch) mode.
  *
  *
  ************************************************************************/
 #if defined(CONFIG_PCI)
 int is_pci_host(struct pci_controller *hose)
 {
 	return ((in32(CFG_GPIO_BASE + 0x1C) & 0x00000800) == 0);
 }
 #endif /* defined(CONFIG_PCI) */

 #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 (ctrlc());
 }

 void post_word_store (ulong a)
 {
 	volatile ulong *save_addr =
 		(volatile ulong *)(CFG_POST_WORD_ADDR);

 	*save_addr = a;
 }

 ulong post_word_load (void)
 {
 	volatile ulong *save_addr =
 		(volatile ulong *)(CFG_POST_WORD_ADDR);

 	return *save_addr;
 }
 #endif

 /*-----------------------------------------------------------------------------
  * board_get_enetaddr -- Read the MAC Addresses in the I2C EEPROM
  *-----------------------------------------------------------------------------
  */
 static int enetaddr_num = 0;
 void board_get_enetaddr (uchar * enet)
 {
 	int i;
 	unsigned char buff[0x100], *cp;

 	/* Initialize I2C					*/
 	i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);

 	/* Read 256 bytes in EEPROM				*/
 	i2c_read (0x50, 0, 1, buff, 0x100);

 	if (enetaddr_num == 0) {
 		cp = &buff[0xF4];
 		enetaddr_num = 1;
 	}
 	else
 		cp = &buff[0xFA];

 	for (i = 0; i < 6; i++,cp++)
 		enet[i] = *cp;

 	printf ("MAC address = %02x:%02x:%02x:%02x:%02x:%02x\n",
 		enet[0], enet[1], enet[2], enet[3], enet[4], enet[5]);

 }
	/*
	* Copyright (C) 2003 Travis B. Sawyer <travis.sawyer@sandburst.com>
	*
	* 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 <asm/processor.h>
	#include <spd_sdram.h>
	#include <i2c.h>

	DECLARE_GLOBAL_DATA_PTR;

	#define BOOT_SMALL_FLASH 32 /* 00100000 */
	#define FLASH_ONBD_N 2 /* 00000010 */
	#define FLASH_SRAM_SEL 1 /* 00000001 */

	long int fixed_sdram (void);

	int board_early_init_f(void)
	{
	unsigned long sdrreg;
	/* TBS: Setup the GPIO access for the user LEDs */
	mfsdr(sdr_pfc0, sdrreg);
	mtsdr(sdr_pfc0, (sdrreg & ~0x00000100) \| 0x00000E00);
	out32(CFG_GPIO_BASE + 0x018, (USR_LED0 \| USR_LED1 \| USR_LED2 \| USR_LED3));
	LED0_OFF();
	LED1_OFF();
	LED2_OFF();
	LED3_OFF();

	/*--------------------------------------------------------------------
	* Setup the external bus controller/chip selects
	-------------------------------------------------------------------/

	/* set the bus controller */
	mtebc (pb0ap, 0x04055200); /* FLASH/SRAM */
	mtebc (pb0cr, 0xfff18000); /* BAS=0xfff 1MB R/W 8-bit */
	mtebc (pb1ap, 0x04055200); /* FLASH/SRAM */
	mtebc (pb1cr, 0xfe098000); /* BAS=0xff8 16MB R/W 8-bit */

	/*--------------------------------------------------------------------
	* Setup the interrupt controller polarities, triggers, etc.
	-------------------------------------------------------------------/
	mtdcr (uic0sr, 0xffffffff); /* clear all */
	mtdcr (uic0er, 0x00000000); /* disable all */
	mtdcr (uic0cr, 0x00000003); /* SMI & UIC1 crit are critical */
	mtdcr (uic0pr, 0xfffffe00); /* per ref-board manual */
	mtdcr (uic0tr, 0x01c00000); /* per ref-board manual */
	mtdcr (uic0vr, 0x00000001); /* int31 highest, base=0x000 */
	mtdcr (uic0sr, 0xffffffff); /* clear all */

	mtdcr (uic1sr, 0xffffffff); /* clear all */
	mtdcr (uic1er, 0x00000000); /* disable all */
	mtdcr (uic1cr, 0x00000000); /* all non-critical */
	mtdcr (uic1pr, 0xffffc0ff); /* per ref-board manual */
	mtdcr (uic1tr, 0x00ff8000); /* per ref-board manual */
	mtdcr (uic1vr, 0x00000001); /* int31 highest, base=0x000 */
	mtdcr (uic1sr, 0xffffffff); /* clear all */

	mtdcr (uic2sr, 0xffffffff); /* clear all */
	mtdcr (uic2er, 0x00000000); /* disable all */
	mtdcr (uic2cr, 0x00000000); /* all non-critical */
	mtdcr (uic2pr, 0xffffffff); /* per ref-board manual */
	mtdcr (uic2tr, 0x00ff8c0f); /* per ref-board manual */
	mtdcr (uic2vr, 0x00000001); /* int31 highest, base=0x000 */
	mtdcr (uic2sr, 0xffffffff); /* clear all */

	mtdcr (uicb0sr, 0xfc000000); /* clear all */
	mtdcr (uicb0er, 0x00000000); /* disable all */
	mtdcr (uicb0cr, 0x00000000); /* all non-critical */
	mtdcr (uicb0pr, 0xfc000000); /* */
	mtdcr (uicb0tr, 0x00000000); /* */
	mtdcr (uicb0vr, 0x00000001); /* */

	LED0_ON();


	return 0;
	}

	int checkboard (void)
	{
	printf ("Board: XES XPedite1000 440GX\n");

	return (0);
	}


	long int initdram (int board_type)
	{
	long dram_size = 0;

	#if defined(CONFIG_SPD_EEPROM)
	dram_size = spd_sdram ();
	#else
	dram_size = fixed_sdram ();
	#endif
	return dram_size;
	}


	#if defined(CFG_DRAM_TEST)
	int testdram (void)
	{
	uint pstart = (uint ) 0x00000000;
	uint pend = (uint ) 0x08000000;
	uint *p;

	for (p = pstart; p < pend; p++)
	*p = 0xaaaaaaaa;

	for (p = pstart; p < pend; p++) {
	if (*p != 0xaaaaaaaa) {
	printf ("SDRAM test fails at: %08x\n", (uint) p);
	return 1;
	}
	}

	for (p = pstart; p < pend; p++)
	*p = 0x55555555;

	for (p = pstart; p < pend; p++) {
	if (*p != 0x55555555) {
	printf ("SDRAM test fails at: %08x\n", (uint) p);
	return 1;
	}
	}
	return 0;
	}
	#endif

	#if !defined(CONFIG_SPD_EEPROM)
	/*************************************************************************
	* fixed sdram init -- doesn't use serial presence detect.
	*
	* Assumes: 128 MB, non-ECC, non-registered
	* PLB @ 133 MHz
	*
	************************************************************************/
	long int fixed_sdram (void)
	{
	uint reg;

	/*--------------------------------------------------------------------
	* Setup some default
	------------------------------------------------------------------/
	mtsdram (mem_uabba, 0x00000000); /* ubba=0 (default) */
	mtsdram (mem_slio, 0x00000000); /* rdre=0 wrre=0 rarw=0 */
	mtsdram (mem_devopt, 0x00000000); /* dll=0 ds=0 (normal) */
	mtsdram (mem_wddctr, 0x00000000); /* wrcp=0 dcd=0 */
	mtsdram (mem_clktr, 0x40000000); /* clkp=1 (90 deg wr) dcdt=0 */

	/*--------------------------------------------------------------------
	* Setup for board-specific specific mem
	------------------------------------------------------------------/
	/*
	* Following for CAS Latency = 2.5 @ 133 MHz PLB
	*/
	mtsdram (mem_b0cr, 0x000a4001); /* SDBA=0x000 128MB, Mode 3, enabled */
	mtsdram (mem_tr0, 0x410a4012); /* WR=2 WD=1 CL=2.5 PA=3 CP=4 LD=2 */
	/* RA=10 RD=3 */
	mtsdram (mem_tr1, 0x8080082f); /* SS=T2 SL=STAGE 3 CD=1 CT=0x02f */
	mtsdram (mem_rtr, 0x08200000); /* Rate 15.625 ns @ 133 MHz PLB */
	mtsdram (mem_cfg1, 0x00000000); /* Self-refresh exit, disable PM */
	udelay (400); /* Delay 200 usecs (min) */

	/*--------------------------------------------------------------------
	* Enable the controller, then wait for DCEN to complete
	------------------------------------------------------------------/
	mtsdram (mem_cfg0, 0x86000000); /* DCEN=1, PMUD=1, 64-bit */
	for (;;) {
	mfsdram (mem_mcsts, reg);
	if (reg & 0x80000000)
	break;
	}

	return (128 * 1024 * 1024); /* 128 MB */
	}
	#endif /* !defined(CONFIG_SPD_EEPROM) */


	/*************************************************************************
	* pci_pre_init
	*
	* This routine is called just prior to registering the hose and gives
	* the board the opportunity to check things. Returning a value of zero
	* indicates that things are bad & PCI initialization should be aborted.
	*
	* Different boards may wish to customize the pci controller structure
	* (add regions, override default access routines, etc) or perform
	* certain pre-initialization actions.
	*
	************************************************************************/
	#if defined(CONFIG_PCI)
	int pci_pre_init(struct pci_controller * hose )
	{
	unsigned long strap;
	/* See if we're supposed to setup the pci */
	mfsdr(sdr_sdstp1, strap);
	if ((strap & 0x00010000) == 0) {
	return (0);
	}

	#if defined(CFG_PCI_FORCE_PCI_CONV)
	/* Setup System Device Register PCIX0_XCR */
	mfsdr(sdr_xcr, strap);
	strap &= 0x0f000000;
	mtsdr(sdr_xcr, strap);
	#endif
	return 1;
	}
	#endif /* defined(CONFIG_PCI) */

	/*************************************************************************
	* pci_target_init
	*
	* The bootstrap configuration provides default settings for the pci
	* inbound map (PIM). But the bootstrap config choices are limited and
	* may not be sufficient for a given board.
	*
	************************************************************************/
	#if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
	void pci_target_init(struct pci_controller * hose )
	{
	/*--------------------------------------------------------------------------+
	* Disable everything
	--------------------------------------------------------------------------/
	out32r( PCIX0_PIM0SA, 0 ); /* disable */
	out32r( PCIX0_PIM1SA, 0 ); /* disable */
	out32r( PCIX0_PIM2SA, 0 ); /* disable */
	out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */

	/*--------------------------------------------------------------------------+
	* Map all of SDRAM to PCI address 0x0000_0000. Note that the 440 strapping
	* options to not support sizes such as 128/256 MB.
	--------------------------------------------------------------------------/
	out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
	out32r( PCIX0_PIM0LAH, 0 );
	out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) \| 1 );

	out32r( PCIX0_BAR0, 0 );

	/*--------------------------------------------------------------------------+
	* Program the board's subsystem id/vendor id
	--------------------------------------------------------------------------/
	out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
	out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );

	out16r( PCIX0_CMD, in16r(PCIX0_CMD) \| PCI_COMMAND_MEMORY );
	}
	#endif /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */


	/*************************************************************************
	* is_pci_host
	*
	* This routine is called to determine if a pci scan should be
	* performed. With various hardware environments (especially cPCI and
	* PPMC) it's insufficient to depend on the state of the arbiter enable
	* bit in the strap register, or generic host/adapter assumptions.
	*
	* Rather than hard-code a bad assumption in the general 440 code, the
	* 440 pci code requires the board to decide at runtime.
	*
	* Return 0 for adapter mode, non-zero for host (monarch) mode.
	*
	*
	************************************************************************/
	#if defined(CONFIG_PCI)
	int is_pci_host(struct pci_controller *hose)
	{
	return ((in32(CFG_GPIO_BASE + 0x1C) & 0x00000800) == 0);
	}
	#endif /* defined(CONFIG_PCI) */

	#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 (ctrlc());
	}

	void post_word_store (ulong a)
	{
	volatile ulong *save_addr =
	(volatile ulong *)(CFG_POST_WORD_ADDR);

	*save_addr = a;
	}

	ulong post_word_load (void)
	{
	volatile ulong *save_addr =
	(volatile ulong *)(CFG_POST_WORD_ADDR);

	return *save_addr;
	}
	#endif

	/*-----------------------------------------------------------------------------
	* board_get_enetaddr -- Read the MAC Addresses in the I2C EEPROM
	*-----------------------------------------------------------------------------
	*/
	static int enetaddr_num = 0;
	void board_get_enetaddr (uchar * enet)
	{
	int i;
	unsigned char buff[0x100], *cp;

	/* Initialize I2C */
	i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);

	/* Read 256 bytes in EEPROM */
	i2c_read (0x50, 0, 1, buff, 0x100);

	if (enetaddr_num == 0) {
	cp = &buff[0xF4];
	enetaddr_num = 1;
	}
	else
	cp = &buff[0xFA];

	for (i = 0; i < 6; i++,cp++)
	enet[i] = *cp;

	printf ("MAC address = %02x:%02x:%02x:%02x:%02x:%02x\n",
	enet[0], enet[1], enet[2], enet[3], enet[4], enet[5]);

	}