board/evb64260/evb64260.c - platform/external/u-boot - Gitiles

 /*
  * (C) Copyright 2001
  * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
  *
  * 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
  */

 /*
  * evb64260.c - main board support/init for the Galileo Eval board.
  */

 #include <common.h>
 #include <74xx_7xx.h>
 #include <galileo/memory.h>
 #include <galileo/pci.h>
 #include <galileo/gt64260R.h>
 #include <net.h>
 #include <netdev.h>

 #include <asm/io.h>
 #include "eth.h"
 #include "mpsc.h"
 #include "i2c.h"
 #include "64260.h"

 DECLARE_GLOBAL_DATA_PTR;

 #ifdef CONFIG_ZUMA_V2
 extern void zuma_mbox_init(void);
 #endif

 #undef	DEBUG
 #define	MAP_PCI

 #ifdef DEBUG
 #define DP(x) x
 #else
 #define DP(x)
 #endif

 /* ------------------------------------------------------------------------- */

 /* this is the current GT register space location */
 /* it starts at CFG_DFL_GT_REGS but moves later to CFG_GT_REGS */

 /* Unfortunately, we cant change it while we are in flash, so we initialize it
  * to the "final" value. This means that any debug_led calls before
  * board_early_init_f wont work right (like in cpu_init_f).
  * See also my_remap_gt_regs below. (NTL)
  */

 unsigned int INTERNAL_REG_BASE_ADDR = CFG_GT_REGS;

 /* ------------------------------------------------------------------------- */

 /*
  * This is a version of the GT register space remapping function that
  * doesn't touch globals (meaning, it's ok to run from flash.)
  *
  * Unfortunately, this has the side effect that a writable
  * INTERNAL_REG_BASE_ADDR is impossible. Oh well.
  */

 void
 my_remap_gt_regs(u32 cur_loc, u32 new_loc)
 {
 	u32 temp;

 	/* check and see if it's already moved */
 	temp = in_le32((u32 *)(new_loc + INTERNAL_SPACE_DECODE));
 	if ((temp & 0xffff) == new_loc >> 20)
 		return;

 	temp = (in_le32((u32 *)(cur_loc + INTERNAL_SPACE_DECODE)) &
 		0xffff0000) | (new_loc >> 20);

 	out_le32((u32 *)(cur_loc + INTERNAL_SPACE_DECODE), temp);

 	while (GTREGREAD(INTERNAL_SPACE_DECODE) != temp);
 }

 static void
 gt_pci_config(void)
 {
 	/* move PCI stuff out of the way - NTL */
 	/* map PCI Host 0 */
 	pciMapSpace(PCI_HOST0, PCI_REGION0, CFG_PCI0_0_MEM_SPACE,
 		CFG_PCI0_0_MEM_SPACE, CFG_PCI0_MEM_SIZE);

 	pciMapSpace(PCI_HOST0, PCI_REGION1, 0, 0, 0);
 	pciMapSpace(PCI_HOST0, PCI_REGION2, 0, 0, 0);
 	pciMapSpace(PCI_HOST0, PCI_REGION3, 0, 0, 0);

 	pciMapSpace(PCI_HOST0, PCI_IO, CFG_PCI0_IO_SPACE_PCI,
 		CFG_PCI0_IO_SPACE, CFG_PCI0_IO_SIZE);

 	/* map PCI Host 1 */
 	pciMapSpace(PCI_HOST1, PCI_REGION0, CFG_PCI1_0_MEM_SPACE,
 		CFG_PCI1_0_MEM_SPACE, CFG_PCI1_MEM_SIZE);

 	pciMapSpace(PCI_HOST1, PCI_REGION1, 0, 0, 0);
 	pciMapSpace(PCI_HOST1, PCI_REGION2, 0, 0, 0);
 	pciMapSpace(PCI_HOST1, PCI_REGION3, 0, 0, 0);

 	pciMapSpace(PCI_HOST1, PCI_IO, CFG_PCI1_IO_SPACE_PCI,
 		CFG_PCI1_IO_SPACE, CFG_PCI1_IO_SIZE);

 	/* PCI interface settings */
 	GT_REG_WRITE(PCI_0TIMEOUT_RETRY, 0xffff);
 	GT_REG_WRITE(PCI_1TIMEOUT_RETRY, 0xffff);
 	GT_REG_WRITE(PCI_0BASE_ADDRESS_REGISTERS_ENABLE, 0xfffff80e);
 	GT_REG_WRITE(PCI_1BASE_ADDRESS_REGISTERS_ENABLE, 0xfffff80e);


 }

 /* Setup CPU interface paramaters */
 static void
 gt_cpu_config(void)
 {
 	cpu_t cpu = get_cpu_type();
 	ulong tmp;

 	/* cpu configuration register */
 	tmp = GTREGREAD(CPU_CONFIGURATION);

 	/* set the AACK delay bit
 	 * see Res#14 */
 	tmp |= CPU_CONF_AACK_DELAY;
 	tmp &= ~CPU_CONF_AACK_DELAY_2; /* New RGF */

 	/* Galileo claims this is necessary for all busses >= 100 MHz */
 	tmp |= CPU_CONF_FAST_CLK;

 	if (cpu == CPU_750CX) {
 		tmp &= ~CPU_CONF_DP_VALID; /* Safer, needed for CXe. RGF */
 		tmp &= ~CPU_CONF_AP_VALID;
 	} else {
 		tmp |= CPU_CONF_DP_VALID;
 		tmp |= CPU_CONF_AP_VALID;
 	}

 	/* this only works with the MPX bus */
 	tmp &= ~CPU_CONF_RD_OOO; /* Safer RGF */
 	tmp |= CPU_CONF_PIPELINE;
 	tmp |= CPU_CONF_TA_DELAY;

 	GT_REG_WRITE(CPU_CONFIGURATION, tmp);

 	/* CPU master control register */
 	tmp = GTREGREAD(CPU_MASTER_CONTROL);

 	tmp |= CPU_MAST_CTL_ARB_EN;

 	if ((cpu == CPU_7400) ||
 	    (cpu == CPU_7410) ||
 	    (cpu == CPU_7450)) {

 		tmp |= CPU_MAST_CTL_CLEAN_BLK;
 		tmp |= CPU_MAST_CTL_FLUSH_BLK;

 	} else {
 		/* cleanblock must be cleared for CPUs
 		 * that do not support this command
 		 * see Res#1 */
 		tmp &= ~CPU_MAST_CTL_CLEAN_BLK;
 		tmp &= ~CPU_MAST_CTL_FLUSH_BLK;
 	}
 	GT_REG_WRITE(CPU_MASTER_CONTROL, tmp);
 }

 /*
  * board_early_init_f.
  *
  * set up gal. device mappings, etc.
  */
 int board_early_init_f (void)
 {
 	uchar sram_boot = 0;

 	/*
 	 * set up the GT the way the kernel wants it
 	 * the call to move the GT register space will obviously
 	 * fail if it has already been done, but we're going to assume
 	 * that if it's not at the power-on location, it's where we put
 	 * it last time. (huber)
 	 */
 	my_remap_gt_regs(CFG_DFL_GT_REGS, CFG_GT_REGS);

 	gt_pci_config();

 	/* mask all external interrupt sources */
 	GT_REG_WRITE(CPU_INTERRUPT_MASK_REGISTER_LOW, 0);
 	GT_REG_WRITE(CPU_INTERRUPT_MASK_REGISTER_HIGH, 0);
 	GT_REG_WRITE(PCI_0INTERRUPT_CAUSE_MASK_REGISTER_LOW, 0);
 	GT_REG_WRITE(PCI_0INTERRUPT_CAUSE_MASK_REGISTER_HIGH, 0);
 	GT_REG_WRITE(PCI_1INTERRUPT_CAUSE_MASK_REGISTER_LOW, 0);
 	GT_REG_WRITE(PCI_1INTERRUPT_CAUSE_MASK_REGISTER_HIGH, 0);
 	GT_REG_WRITE(CPU_INT_0_MASK, 0);
 	GT_REG_WRITE(CPU_INT_1_MASK, 0);
 	GT_REG_WRITE(CPU_INT_2_MASK, 0);
 	GT_REG_WRITE(CPU_INT_3_MASK, 0);

 	/* now, onto the configuration */
 	GT_REG_WRITE(SDRAM_CONFIGURATION, CFG_SDRAM_CONFIG);

 	/* ----- DEVICE BUS SETTINGS ------ */

 	/*
 	 * EVB
 	 * 0 - SRAM
 	 * 1 - RTC
 	 * 2 - UART
 	 * 3 - Flash
 	 * boot - BootCS
 	 *
 	 * Zuma
 	 * 0 - Flash
 	 * boot - BootCS
 	 */

 	/*
 	 * the dual 7450 module requires burst access to the boot
 	 * device, so the serial rom copies the boot device to the
 	 * on-board sram on the eval board, and updates the correct
 	 * registers to boot from the sram. (device0)
 	 */
 #if defined(CONFIG_ZUMA_V2) || defined(CONFIG_P3G4)
 	/* Zuma has no SRAM */
 	sram_boot = 0;
 #else
 	if (memoryGetDeviceBaseAddress(DEVICE0) && 0xfff00000 == CFG_MONITOR_BASE)
 		sram_boot = 1;
 #endif

 		memoryMapDeviceSpace(DEVICE0, CFG_DEV0_SPACE, CFG_DEV0_SIZE);

 	memoryMapDeviceSpace(DEVICE1, CFG_DEV1_SPACE, CFG_DEV1_SIZE);
 	memoryMapDeviceSpace(DEVICE2, CFG_DEV2_SPACE, CFG_DEV2_SIZE);
 	memoryMapDeviceSpace(DEVICE3, CFG_DEV3_SPACE, CFG_DEV3_SIZE);

 	/* configure device timing */
 #ifdef CFG_DEV0_PAR
 	if (!sram_boot)
 		GT_REG_WRITE(DEVICE_BANK0PARAMETERS, CFG_DEV0_PAR);
 #endif

 #ifdef CFG_DEV1_PAR
 	GT_REG_WRITE(DEVICE_BANK1PARAMETERS, CFG_DEV1_PAR);
 #endif
 #ifdef CFG_DEV2_PAR
 	GT_REG_WRITE(DEVICE_BANK2PARAMETERS, CFG_DEV2_PAR);
 #endif

 #ifdef CONFIG_EVB64260
 #ifdef CFG_32BIT_BOOT_PAR
 	/* detect if we are booting from the 32 bit flash */
 	if (GTREGREAD(DEVICE_BOOT_BANK_PARAMETERS) & (0x3 << 20)) {
 		/* 32 bit boot flash */
 		GT_REG_WRITE(DEVICE_BANK3PARAMETERS, CFG_8BIT_BOOT_PAR);
 		GT_REG_WRITE(DEVICE_BOOT_BANK_PARAMETERS, CFG_32BIT_BOOT_PAR);
 	} else {
 		/* 8 bit boot flash */
 		GT_REG_WRITE(DEVICE_BANK3PARAMETERS, CFG_32BIT_BOOT_PAR);
 		GT_REG_WRITE(DEVICE_BOOT_BANK_PARAMETERS, CFG_8BIT_BOOT_PAR);
 	}
 #else
 	/* 8 bit boot flash only */
 	GT_REG_WRITE(DEVICE_BOOT_BANK_PARAMETERS, CFG_8BIT_BOOT_PAR);
 #endif
 #else /* CONFIG_EVB64260 not defined */
 		/* We are booting from 16-bit flash.
 		 */
 	GT_REG_WRITE(DEVICE_BOOT_BANK_PARAMETERS, CFG_16BIT_BOOT_PAR);
 #endif

 	gt_cpu_config();

 	/* MPP setup */
 	GT_REG_WRITE(MPP_CONTROL0, CFG_MPP_CONTROL_0);
 	GT_REG_WRITE(MPP_CONTROL1, CFG_MPP_CONTROL_1);
 	GT_REG_WRITE(MPP_CONTROL2, CFG_MPP_CONTROL_2);
 	GT_REG_WRITE(MPP_CONTROL3, CFG_MPP_CONTROL_3);

 	GT_REG_WRITE(GPP_LEVEL_CONTROL, CFG_GPP_LEVEL_CONTROL);
 	GT_REG_WRITE(SERIAL_PORT_MULTIPLEX, CFG_SERIAL_PORT_MUX);

 	return 0;
 }

 /* various things to do after relocation */

 int misc_init_r (void)
 {
 	icache_enable();
 #ifdef CFG_L2
 	l2cache_enable();
 #endif

 #ifdef CONFIG_MPSC
 	mpsc_init2();
 #endif

 #ifdef CONFIG_ZUMA_V2
 	zuma_mbox_init();
 #endif
 	return (0);
 }

 void
 after_reloc(ulong dest_addr)
 {
 	/* check to see if we booted from the sram.  If so, move things
 	 * back to the way they should be. (we're running from main
 	 * memory at this point now */

 	if (memoryGetDeviceBaseAddress(DEVICE0) == CFG_MONITOR_BASE) {
 		memoryMapDeviceSpace(DEVICE0, CFG_DEV0_SPACE, CFG_DEV0_SIZE);
 		memoryMapDeviceSpace(BOOT_DEVICE, CFG_FLASH_BASE, _1M);
 	}

 	/* now, jump to the main U-Boot board init code */
 	board_init_r ((gd_t *)gd, dest_addr);

 	/* NOTREACHED */
 }

 /* ------------------------------------------------------------------------- */

 /*
  * Check Board Identity:
  */

 int
 checkboard (void)
 {
 	puts ("Board: " CFG_BOARD_NAME "\n");
 	return (0);
 }

 /* utility functions */
 void
 debug_led(int led, int mode)
 {
 #if !defined(CONFIG_ZUMA_V2) && !defined(CONFIG_P3G4)
 	volatile int *addr = NULL;
 	int dummy;

 	if (mode == 1) {
 		switch (led) {
 		case 0:
 			addr = (int *)((unsigned int)CFG_DEV1_SPACE | 0x08000);
 			break;

 		case 1:
 			addr = (int *)((unsigned int)CFG_DEV1_SPACE | 0x0c000);
 			break;

 		case 2:
 			addr = (int *)((unsigned int)CFG_DEV1_SPACE | 0x10000);
 			break;
 		}
 	} else if (mode == 0) {
 		switch (led) {
 		case 0:
 			addr = (int *)((unsigned int)CFG_DEV1_SPACE | 0x14000);
 			break;

 		case 1:
 			addr = (int *)((unsigned int)CFG_DEV1_SPACE | 0x18000);
 			break;

 		case 2:
 			addr = (int *)((unsigned int)CFG_DEV1_SPACE | 0x1c000);
 			break;
 		}
 	}
 	WRITE_CHAR(addr, 0);
 	dummy = *addr;
 #endif /* CONFIG_ZUMA_V2 */
 }

 void
 display_mem_map(void)
 {
     int i,j;
     unsigned int base,size,width;
     /* SDRAM */
     printf("SDRAM\n");
     for(i=0;i<=BANK3;i++) {
 	base = memoryGetBankBaseAddress(i);
 	size = memoryGetBankSize(i);
 	if(size !=0)
 	{
 	    printf("BANK%d: base - 0x%08x\tsize - %dM bytes\n",i,base,size>>20);
 	}
     }

     /* CPU's PCI windows */
     for(i=0;i<=PCI_HOST1;i++) {
 	printf("\nCPU's PCI %d windows\n", i);
 	base=pciGetSpaceBase(i,PCI_IO);
 	size=pciGetSpaceSize(i,PCI_IO);
 	printf("      IO: base - 0x%08x\tsize - %dM bytes\n",base,size>>20);
 	for(j=0;j<=PCI_REGION3;j++) {
 	    base = pciGetSpaceBase(i,j);
 	    size = pciGetSpaceSize(i,j);
 	    printf("MEMORY %d: base - 0x%08x\tsize - %dM bytes\n",j,base,
 		    size>>20);
 	}
     }

     /* Devices */
     printf("\nDEVICES\n");
 	for(i=0;i<=DEVICE3;i++) {
 	base = memoryGetDeviceBaseAddress(i);
 	size = memoryGetDeviceSize(i);
 	width= memoryGetDeviceWidth(i) * 8;
 	printf("DEV %d:  base - 0x%08x\tsize - %dM bytes\twidth - %d bits\n",
 	       i, base, size>>20, width);
     }

     /* Bootrom */
     base = memoryGetDeviceBaseAddress(BOOT_DEVICE); /* Boot */
     size = memoryGetDeviceSize(BOOT_DEVICE);
     width= memoryGetDeviceWidth(BOOT_DEVICE) * 8;
     printf(" BOOT:  base - 0x%08x\tsize - %dM bytes\twidth - %d bits\n",
 	   base, size>>20, width);
 }

 int board_eth_init(bd_t *bis)
 {
 	gt6426x_eth_initialize(bis);
 	return 0;
 }
	/*
	* (C) Copyright 2001
	* Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
	*
	* 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
	*/

	/*
	* evb64260.c - main board support/init for the Galileo Eval board.
	*/

	#include <common.h>
	#include <74xx_7xx.h>
	#include <galileo/memory.h>
	#include <galileo/pci.h>
	#include <galileo/gt64260R.h>
	#include <net.h>
	#include <netdev.h>

	#include <asm/io.h>
	#include "eth.h"
	#include "mpsc.h"
	#include "i2c.h"
	#include "64260.h"

	DECLARE_GLOBAL_DATA_PTR;

	#ifdef CONFIG_ZUMA_V2
	extern void zuma_mbox_init(void);
	#endif

	#undef DEBUG
	#define MAP_PCI

	#ifdef DEBUG
	#define DP(x) x
	#else
	#define DP(x)
	#endif

	/* ------------------------------------------------------------------------- */

	/* this is the current GT register space location */
	/* it starts at CFG_DFL_GT_REGS but moves later to CFG_GT_REGS */

	/* Unfortunately, we cant change it while we are in flash, so we initialize it
	* to the "final" value. This means that any debug_led calls before
	* board_early_init_f wont work right (like in cpu_init_f).
	* See also my_remap_gt_regs below. (NTL)
	*/

	unsigned int INTERNAL_REG_BASE_ADDR = CFG_GT_REGS;

	/* ------------------------------------------------------------------------- */

	/*
	* This is a version of the GT register space remapping function that
	* doesn't touch globals (meaning, it's ok to run from flash.)
	*
	* Unfortunately, this has the side effect that a writable
	* INTERNAL_REG_BASE_ADDR is impossible. Oh well.
	*/

	void
	my_remap_gt_regs(u32 cur_loc, u32 new_loc)
	{
	u32 temp;

	/* check and see if it's already moved */
	temp = in_le32((u32 *)(new_loc + INTERNAL_SPACE_DECODE));
	if ((temp & 0xffff) == new_loc >> 20)
	return;

	temp = (in_le32((u32 *)(cur_loc + INTERNAL_SPACE_DECODE)) &
	0xffff0000) \| (new_loc >> 20);

	out_le32((u32 *)(cur_loc + INTERNAL_SPACE_DECODE), temp);

	while (GTREGREAD(INTERNAL_SPACE_DECODE) != temp);
	}

	static void
	gt_pci_config(void)
	{
	/* move PCI stuff out of the way - NTL */
	/* map PCI Host 0 */
	pciMapSpace(PCI_HOST0, PCI_REGION0, CFG_PCI0_0_MEM_SPACE,
	CFG_PCI0_0_MEM_SPACE, CFG_PCI0_MEM_SIZE);

	pciMapSpace(PCI_HOST0, PCI_REGION1, 0, 0, 0);
	pciMapSpace(PCI_HOST0, PCI_REGION2, 0, 0, 0);
	pciMapSpace(PCI_HOST0, PCI_REGION3, 0, 0, 0);

	pciMapSpace(PCI_HOST0, PCI_IO, CFG_PCI0_IO_SPACE_PCI,
	CFG_PCI0_IO_SPACE, CFG_PCI0_IO_SIZE);

	/* map PCI Host 1 */
	pciMapSpace(PCI_HOST1, PCI_REGION0, CFG_PCI1_0_MEM_SPACE,
	CFG_PCI1_0_MEM_SPACE, CFG_PCI1_MEM_SIZE);

	pciMapSpace(PCI_HOST1, PCI_REGION1, 0, 0, 0);
	pciMapSpace(PCI_HOST1, PCI_REGION2, 0, 0, 0);
	pciMapSpace(PCI_HOST1, PCI_REGION3, 0, 0, 0);

	pciMapSpace(PCI_HOST1, PCI_IO, CFG_PCI1_IO_SPACE_PCI,
	CFG_PCI1_IO_SPACE, CFG_PCI1_IO_SIZE);

	/* PCI interface settings */
	GT_REG_WRITE(PCI_0TIMEOUT_RETRY, 0xffff);
	GT_REG_WRITE(PCI_1TIMEOUT_RETRY, 0xffff);
	GT_REG_WRITE(PCI_0BASE_ADDRESS_REGISTERS_ENABLE, 0xfffff80e);
	GT_REG_WRITE(PCI_1BASE_ADDRESS_REGISTERS_ENABLE, 0xfffff80e);


	}

	/* Setup CPU interface paramaters */
	static void
	gt_cpu_config(void)
	{
	cpu_t cpu = get_cpu_type();
	ulong tmp;

	/* cpu configuration register */
	tmp = GTREGREAD(CPU_CONFIGURATION);

	/* set the AACK delay bit
	* see Res#14 */
	tmp \|= CPU_CONF_AACK_DELAY;
	tmp &= ~CPU_CONF_AACK_DELAY_2; /* New RGF */

	/* Galileo claims this is necessary for all busses >= 100 MHz */
	tmp \|= CPU_CONF_FAST_CLK;

	if (cpu == CPU_750CX) {
	tmp &= ~CPU_CONF_DP_VALID; /* Safer, needed for CXe. RGF */
	tmp &= ~CPU_CONF_AP_VALID;
	} else {
	tmp \|= CPU_CONF_DP_VALID;
	tmp \|= CPU_CONF_AP_VALID;
	}

	/* this only works with the MPX bus */
	tmp &= ~CPU_CONF_RD_OOO; /* Safer RGF */
	tmp \|= CPU_CONF_PIPELINE;
	tmp \|= CPU_CONF_TA_DELAY;

	GT_REG_WRITE(CPU_CONFIGURATION, tmp);

	/* CPU master control register */
	tmp = GTREGREAD(CPU_MASTER_CONTROL);

	tmp \|= CPU_MAST_CTL_ARB_EN;

	if ((cpu == CPU_7400) \|\|
	(cpu == CPU_7410) \|\|
	(cpu == CPU_7450)) {

	tmp \|= CPU_MAST_CTL_CLEAN_BLK;
	tmp \|= CPU_MAST_CTL_FLUSH_BLK;

	} else {
	/* cleanblock must be cleared for CPUs
	* that do not support this command
	* see Res#1 */
	tmp &= ~CPU_MAST_CTL_CLEAN_BLK;
	tmp &= ~CPU_MAST_CTL_FLUSH_BLK;
	}
	GT_REG_WRITE(CPU_MASTER_CONTROL, tmp);
	}

	/*
	* board_early_init_f.
	*
	* set up gal. device mappings, etc.
	*/
	int board_early_init_f (void)
	{
	uchar sram_boot = 0;

	/*
	* set up the GT the way the kernel wants it
	* the call to move the GT register space will obviously
	* fail if it has already been done, but we're going to assume
	* that if it's not at the power-on location, it's where we put
	* it last time. (huber)
	*/
	my_remap_gt_regs(CFG_DFL_GT_REGS, CFG_GT_REGS);

	gt_pci_config();

	/* mask all external interrupt sources */
	GT_REG_WRITE(CPU_INTERRUPT_MASK_REGISTER_LOW, 0);
	GT_REG_WRITE(CPU_INTERRUPT_MASK_REGISTER_HIGH, 0);
	GT_REG_WRITE(PCI_0INTERRUPT_CAUSE_MASK_REGISTER_LOW, 0);
	GT_REG_WRITE(PCI_0INTERRUPT_CAUSE_MASK_REGISTER_HIGH, 0);
	GT_REG_WRITE(PCI_1INTERRUPT_CAUSE_MASK_REGISTER_LOW, 0);
	GT_REG_WRITE(PCI_1INTERRUPT_CAUSE_MASK_REGISTER_HIGH, 0);
	GT_REG_WRITE(CPU_INT_0_MASK, 0);
	GT_REG_WRITE(CPU_INT_1_MASK, 0);
	GT_REG_WRITE(CPU_INT_2_MASK, 0);
	GT_REG_WRITE(CPU_INT_3_MASK, 0);

	/* now, onto the configuration */
	GT_REG_WRITE(SDRAM_CONFIGURATION, CFG_SDRAM_CONFIG);

	/* ----- DEVICE BUS SETTINGS ------ */

	/*
	* EVB
	* 0 - SRAM
	* 1 - RTC
	* 2 - UART
	* 3 - Flash
	* boot - BootCS
	*
	* Zuma
	* 0 - Flash
	* boot - BootCS
	*/

	/*
	* the dual 7450 module requires burst access to the boot
	* device, so the serial rom copies the boot device to the
	* on-board sram on the eval board, and updates the correct
	* registers to boot from the sram. (device0)
	*/
	#if defined(CONFIG_ZUMA_V2) \|\| defined(CONFIG_P3G4)
	/* Zuma has no SRAM */
	sram_boot = 0;
	#else
	if (memoryGetDeviceBaseAddress(DEVICE0) && 0xfff00000 == CFG_MONITOR_BASE)
	sram_boot = 1;
	#endif

	memoryMapDeviceSpace(DEVICE0, CFG_DEV0_SPACE, CFG_DEV0_SIZE);

	memoryMapDeviceSpace(DEVICE1, CFG_DEV1_SPACE, CFG_DEV1_SIZE);
	memoryMapDeviceSpace(DEVICE2, CFG_DEV2_SPACE, CFG_DEV2_SIZE);
	memoryMapDeviceSpace(DEVICE3, CFG_DEV3_SPACE, CFG_DEV3_SIZE);

	/* configure device timing */
	#ifdef CFG_DEV0_PAR
	if (!sram_boot)
	GT_REG_WRITE(DEVICE_BANK0PARAMETERS, CFG_DEV0_PAR);
	#endif

	#ifdef CFG_DEV1_PAR
	GT_REG_WRITE(DEVICE_BANK1PARAMETERS, CFG_DEV1_PAR);
	#endif
	#ifdef CFG_DEV2_PAR
	GT_REG_WRITE(DEVICE_BANK2PARAMETERS, CFG_DEV2_PAR);
	#endif

	#ifdef CONFIG_EVB64260
	#ifdef CFG_32BIT_BOOT_PAR
	/* detect if we are booting from the 32 bit flash */
	if (GTREGREAD(DEVICE_BOOT_BANK_PARAMETERS) & (0x3 << 20)) {
	/* 32 bit boot flash */
	GT_REG_WRITE(DEVICE_BANK3PARAMETERS, CFG_8BIT_BOOT_PAR);
	GT_REG_WRITE(DEVICE_BOOT_BANK_PARAMETERS, CFG_32BIT_BOOT_PAR);
	} else {
	/* 8 bit boot flash */
	GT_REG_WRITE(DEVICE_BANK3PARAMETERS, CFG_32BIT_BOOT_PAR);
	GT_REG_WRITE(DEVICE_BOOT_BANK_PARAMETERS, CFG_8BIT_BOOT_PAR);
	}
	#else
	/* 8 bit boot flash only */
	GT_REG_WRITE(DEVICE_BOOT_BANK_PARAMETERS, CFG_8BIT_BOOT_PAR);
	#endif
	#else /* CONFIG_EVB64260 not defined */
	/* We are booting from 16-bit flash.
	*/
	GT_REG_WRITE(DEVICE_BOOT_BANK_PARAMETERS, CFG_16BIT_BOOT_PAR);
	#endif

	gt_cpu_config();

	/* MPP setup */
	GT_REG_WRITE(MPP_CONTROL0, CFG_MPP_CONTROL_0);
	GT_REG_WRITE(MPP_CONTROL1, CFG_MPP_CONTROL_1);
	GT_REG_WRITE(MPP_CONTROL2, CFG_MPP_CONTROL_2);
	GT_REG_WRITE(MPP_CONTROL3, CFG_MPP_CONTROL_3);

	GT_REG_WRITE(GPP_LEVEL_CONTROL, CFG_GPP_LEVEL_CONTROL);
	GT_REG_WRITE(SERIAL_PORT_MULTIPLEX, CFG_SERIAL_PORT_MUX);

	return 0;
	}

	/* various things to do after relocation */

	int misc_init_r (void)
	{
	icache_enable();
	#ifdef CFG_L2
	l2cache_enable();
	#endif

	#ifdef CONFIG_MPSC
	mpsc_init2();
	#endif

	#ifdef CONFIG_ZUMA_V2
	zuma_mbox_init();
	#endif
	return (0);
	}

	void
	after_reloc(ulong dest_addr)
	{
	/* check to see if we booted from the sram. If so, move things
	* back to the way they should be. (we're running from main
	* memory at this point now */

	if (memoryGetDeviceBaseAddress(DEVICE0) == CFG_MONITOR_BASE) {
	memoryMapDeviceSpace(DEVICE0, CFG_DEV0_SPACE, CFG_DEV0_SIZE);
	memoryMapDeviceSpace(BOOT_DEVICE, CFG_FLASH_BASE, _1M);
	}

	/* now, jump to the main U-Boot board init code */
	board_init_r ((gd_t *)gd, dest_addr);

	/* NOTREACHED */
	}

	/* ------------------------------------------------------------------------- */

	/*
	* Check Board Identity:
	*/

	int
	checkboard (void)
	{
	puts ("Board: " CFG_BOARD_NAME "\n");
	return (0);
	}

	/* utility functions */
	void
	debug_led(int led, int mode)
	{
	#if !defined(CONFIG_ZUMA_V2) && !defined(CONFIG_P3G4)
	volatile int *addr = NULL;
	int dummy;

	if (mode == 1) {
	switch (led) {
	case 0:
	addr = (int *)((unsigned int)CFG_DEV1_SPACE \| 0x08000);
	break;

	case 1:
	addr = (int *)((unsigned int)CFG_DEV1_SPACE \| 0x0c000);
	break;

	case 2:
	addr = (int *)((unsigned int)CFG_DEV1_SPACE \| 0x10000);
	break;
	}
	} else if (mode == 0) {
	switch (led) {
	case 0:
	addr = (int *)((unsigned int)CFG_DEV1_SPACE \| 0x14000);
	break;

	case 1:
	addr = (int *)((unsigned int)CFG_DEV1_SPACE \| 0x18000);
	break;

	case 2:
	addr = (int *)((unsigned int)CFG_DEV1_SPACE \| 0x1c000);
	break;
	}
	}
	WRITE_CHAR(addr, 0);
	dummy = *addr;
	#endif /* CONFIG_ZUMA_V2 */
	}

	void
	display_mem_map(void)
	{
	int i,j;
	unsigned int base,size,width;
	/* SDRAM */
	printf("SDRAM\n");
	for(i=0;i<=BANK3;i++) {
	base = memoryGetBankBaseAddress(i);
	size = memoryGetBankSize(i);
	if(size !=0)
	{
	printf("BANK%d: base - 0x%08x\tsize - %dM bytes\n",i,base,size>>20);
	}
	}

	/* CPU's PCI windows */
	for(i=0;i<=PCI_HOST1;i++) {
	printf("\nCPU's PCI %d windows\n", i);
	base=pciGetSpaceBase(i,PCI_IO);
	size=pciGetSpaceSize(i,PCI_IO);
	printf(" IO: base - 0x%08x\tsize - %dM bytes\n",base,size>>20);
	for(j=0;j<=PCI_REGION3;j++) {
	base = pciGetSpaceBase(i,j);
	size = pciGetSpaceSize(i,j);
	printf("MEMORY %d: base - 0x%08x\tsize - %dM bytes\n",j,base,
	size>>20);
	}
	}

	/* Devices */
	printf("\nDEVICES\n");
	for(i=0;i<=DEVICE3;i++) {
	base = memoryGetDeviceBaseAddress(i);
	size = memoryGetDeviceSize(i);
	width= memoryGetDeviceWidth(i) * 8;
	printf("DEV %d: base - 0x%08x\tsize - %dM bytes\twidth - %d bits\n",
	i, base, size>>20, width);
	}

	/* Bootrom */
	base = memoryGetDeviceBaseAddress(BOOT_DEVICE); /* Boot */
	size = memoryGetDeviceSize(BOOT_DEVICE);
	width= memoryGetDeviceWidth(BOOT_DEVICE) * 8;
	printf(" BOOT: base - 0x%08x\tsize - %dM bytes\twidth - %d bits\n",
	base, size>>20, width);
	}

	int board_eth_init(bd_t *bis)
	{
	gt6426x_eth_initialize(bis);
	return 0;
	}