board/sbc8349/pci.c - uboot/qsr1000 - Git at Google

 /*
  * pci.c -- WindRiver SBC8349 PCI board support.
  * Copyright (c) 2006 Wind River Systems, Inc.
  *
  * Based on MPC8349 PCI support but w/o PIB related code.
  *
  * 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 <asm/mmu.h>
 #include <common.h>
 #include <asm/global_data.h>
 #include <pci.h>
 #include <asm/mpc8349_pci.h>
 #include <i2c.h>
 #if defined(CONFIG_OF_LIBFDT)
 #include <libfdt.h>
 #include <fdt_support.h>
 #endif

 DECLARE_GLOBAL_DATA_PTR;

 #ifdef CONFIG_PCI

 /* System RAM mapped to PCI space */
 #define CONFIG_PCI_SYS_MEM_BUS	CONFIG_SYS_SDRAM_BASE
 #define CONFIG_PCI_SYS_MEM_PHYS	CONFIG_SYS_SDRAM_BASE

 #ifndef CONFIG_PCI_PNP
 static struct pci_config_table pci_mpc8349emds_config_table[] = {
 	{PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
 	 PCI_IDSEL_NUMBER, PCI_ANY_ID,
 	 pci_cfgfunc_config_device, {PCI_ENET0_IOADDR,
 				     PCI_ENET0_MEMADDR,
 				     PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
 		}
 	},
 	{}
 };
 #endif

 static struct pci_controller pci_hose[] = {
        {
 #ifndef CONFIG_PCI_PNP
        config_table:pci_mpc8349emds_config_table,
 #endif
        },
        {
 #ifndef CONFIG_PCI_PNP
        config_table:pci_mpc8349emds_config_table,
 #endif
        }
 };

 /**************************************************************************
  * pci_init_board()
  *
  * NOTICE: PCI2 is not supported. There is only one
  * physical PCI slot on the board.
  *
  */
 void
 pci_init_board(void)
 {
 	volatile immap_t *	immr;
 	volatile clk83xx_t *	clk;
 	volatile law83xx_t *	pci_law;
 	volatile pot83xx_t *	pci_pot;
 	volatile pcictrl83xx_t *	pci_ctrl;
 	volatile pciconf83xx_t *	pci_conf;
 	u16 reg16;
 	u32 reg32;
 	u32 dev;
 	struct	pci_controller * hose;

 	immr = (immap_t *)CONFIG_SYS_IMMR;
 	clk = (clk83xx_t *)&immr->clk;
 	pci_law = immr->sysconf.pcilaw;
 	pci_pot = immr->ios.pot;
 	pci_ctrl = immr->pci_ctrl;
 	pci_conf = immr->pci_conf;

 	hose = &pci_hose[0];

 	/*
 	 * Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode
 	 */

 	reg32 = clk->occr;
 	udelay(2000);
 	clk->occr = 0xff000000;
 	udelay(2000);

 	/*
 	 * Release PCI RST Output signal
 	 */
 	pci_ctrl[0].gcr = 0;
 	udelay(2000);
 	pci_ctrl[0].gcr = 1;

 #ifdef CONFIG_MPC83XX_PCI2
 	pci_ctrl[1].gcr = 0;
 	udelay(2000);
 	pci_ctrl[1].gcr = 1;
 #endif

 	/* We need to wait at least a 1sec based on PCI specs */
 	{
 		int i;

 		for (i = 0; i < 1000; ++i)
 			udelay (1000);
 	}

 	/*
 	 * Configure PCI Local Access Windows
 	 */
 	pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR;
 	pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G;

 	pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR;
 	pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_4M;

 	/*
 	 * Configure PCI Outbound Translation Windows
 	 */

 	/* PCI1 mem space - prefetch */
 	pci_pot[0].potar = (CONFIG_SYS_PCI1_MEM_BASE >> 12) & POTAR_TA_MASK;
 	pci_pot[0].pobar = (CONFIG_SYS_PCI1_MEM_PHYS >> 12) & POBAR_BA_MASK;
 	pci_pot[0].pocmr = POCMR_EN | POCMR_PREFETCH_EN | (POCMR_CM_256M & POCMR_CM_MASK);

 	/* PCI1 IO space */
 	pci_pot[1].potar = (CONFIG_SYS_PCI1_IO_BASE >> 12) & POTAR_TA_MASK;
 	pci_pot[1].pobar = (CONFIG_SYS_PCI1_IO_PHYS >> 12) & POBAR_BA_MASK;
 	pci_pot[1].pocmr = POCMR_EN | POCMR_IO | (POCMR_CM_1M & POCMR_CM_MASK);

 	/* PCI1 mmio - non-prefetch mem space */
 	pci_pot[2].potar = (CONFIG_SYS_PCI1_MMIO_BASE >> 12) & POTAR_TA_MASK;
 	pci_pot[2].pobar = (CONFIG_SYS_PCI1_MMIO_PHYS >> 12) & POBAR_BA_MASK;
 	pci_pot[2].pocmr = POCMR_EN | (POCMR_CM_256M & POCMR_CM_MASK);

 	/*
 	 * Configure PCI Inbound Translation Windows
 	 */

 	/* we need RAM mapped to PCI space for the devices to
 	 * access main memory */
 	pci_ctrl[0].pitar1 = 0x0;
 	pci_ctrl[0].pibar1 = 0x0;
 	pci_ctrl[0].piebar1 = 0x0;
 	pci_ctrl[0].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size) - 1);

 	hose->first_busno = 0;
 	hose->last_busno = 0xff;

 	/* PCI memory prefetch space */
 	pci_set_region(hose->regions + 0,
 		       CONFIG_SYS_PCI1_MEM_BASE,
 		       CONFIG_SYS_PCI1_MEM_PHYS,
 		       CONFIG_SYS_PCI1_MEM_SIZE,
 		       PCI_REGION_MEM|PCI_REGION_PREFETCH);

 	/* PCI memory space */
 	pci_set_region(hose->regions + 1,
 		       CONFIG_SYS_PCI1_MMIO_BASE,
 		       CONFIG_SYS_PCI1_MMIO_PHYS,
 		       CONFIG_SYS_PCI1_MMIO_SIZE,
 		       PCI_REGION_MEM);

 	/* PCI IO space */
 	pci_set_region(hose->regions + 2,
 		       CONFIG_SYS_PCI1_IO_BASE,
 		       CONFIG_SYS_PCI1_IO_PHYS,
 		       CONFIG_SYS_PCI1_IO_SIZE,
 		       PCI_REGION_IO);

 	/* System memory space */
 	pci_set_region(hose->regions + 3,
 		       CONFIG_PCI_SYS_MEM_BUS,
 		       CONFIG_PCI_SYS_MEM_PHYS,
 		       gd->ram_size,
 		       PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);

 	hose->region_count = 4;

 	pci_setup_indirect(hose,
 			   (CONFIG_SYS_IMMR+0x8300),
 			   (CONFIG_SYS_IMMR+0x8304));

 	pci_register_hose(hose);

 	/*
 	 * Write to Command register
 	 */
 	reg16 = 0xff;
 	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);
 	pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
 	pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);

 #ifdef CONFIG_PCI_SCAN_SHOW
 	printf("PCI:   Bus Dev VenId DevId Class Int\n");
 #endif
 	/*
 	 * Hose scan.
 	 */
 	hose->last_busno = pci_hose_scan(hose);

 #ifdef CONFIG_MPC83XX_PCI2
 	hose = &pci_hose[1];

 	/*
 	 * Configure PCI Outbound Translation Windows
 	 */

 	/* PCI2 mem space - prefetch */
 	pci_pot[3].potar = (CONFIG_SYS_PCI2_MEM_BASE >> 12) & POTAR_TA_MASK;
 	pci_pot[3].pobar = (CONFIG_SYS_PCI2_MEM_PHYS >> 12) & POBAR_BA_MASK;
 	pci_pot[3].pocmr = POCMR_EN | POCMR_PCI2 | POCMR_PREFETCH_EN | (POCMR_CM_256M & POCMR_CM_MASK);

 	/* PCI2 IO space */
 	pci_pot[4].potar = (CONFIG_SYS_PCI2_IO_BASE >> 12) & POTAR_TA_MASK;
 	pci_pot[4].pobar = (CONFIG_SYS_PCI2_IO_PHYS >> 12) & POBAR_BA_MASK;
 	pci_pot[4].pocmr = POCMR_EN | POCMR_PCI2 | POCMR_IO | (POCMR_CM_1M & POCMR_CM_MASK);

 	/* PCI2 mmio - non-prefetch mem space */
 	pci_pot[5].potar = (CONFIG_SYS_PCI2_MMIO_BASE >> 12) & POTAR_TA_MASK;
 	pci_pot[5].pobar = (CONFIG_SYS_PCI2_MMIO_PHYS >> 12) & POBAR_BA_MASK;
 	pci_pot[5].pocmr = POCMR_EN | POCMR_PCI2 | (POCMR_CM_256M & POCMR_CM_MASK);

 	/*
 	 * Configure PCI Inbound Translation Windows
 	 */

 	/* we need RAM mapped to PCI space for the devices to
 	 * access main memory */
 	pci_ctrl[1].pitar1 = 0x0;
 	pci_ctrl[1].pibar1 = 0x0;
 	pci_ctrl[1].piebar1 = 0x0;
 	pci_ctrl[1].piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP | PIWAR_WTT_SNOOP | (__ilog2(gd->ram_size) - 1);

 	hose->first_busno = pci_hose[0].last_busno + 1;
 	hose->last_busno = 0xff;

 	/* PCI memory prefetch space */
 	pci_set_region(hose->regions + 0,
 		       CONFIG_SYS_PCI2_MEM_BASE,
 		       CONFIG_SYS_PCI2_MEM_PHYS,
 		       CONFIG_SYS_PCI2_MEM_SIZE,
 		       PCI_REGION_MEM|PCI_REGION_PREFETCH);

 	/* PCI memory space */
 	pci_set_region(hose->regions + 1,
 		       CONFIG_SYS_PCI2_MMIO_BASE,
 		       CONFIG_SYS_PCI2_MMIO_PHYS,
 		       CONFIG_SYS_PCI2_MMIO_SIZE,
 		       PCI_REGION_MEM);

 	/* PCI IO space */
 	pci_set_region(hose->regions + 2,
 		       CONFIG_SYS_PCI2_IO_BASE,
 		       CONFIG_SYS_PCI2_IO_PHYS,
 		       CONFIG_SYS_PCI2_IO_SIZE,
 		       PCI_REGION_IO);

 	/* System memory space */
 	pci_set_region(hose->regions + 3,
 		       CONFIG_PCI_SYS_MEM_BUS,
 		       CONFIG_PCI_SYS_MEM_PHYS,
 		       gd->ram_size,
 		       PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);

 	hose->region_count = 4;

 	pci_setup_indirect(hose,
 			   (CONFIG_SYS_IMMR+0x8380),
 			   (CONFIG_SYS_IMMR+0x8384));

 	pci_register_hose(hose);

 	/*
 	 * Write to Command register
 	 */
 	reg16 = 0xff;
 	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);
 	pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
 	pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);

 	/*
 	 * Hose scan.
 	 */
 	hose->last_busno = pci_hose_scan(hose);
 #endif

 }

 #if defined(CONFIG_OF_LIBFDT)
 void ft_pci_setup(void *blob, bd_t *bd)
 {
 	int nodeoffset;
 	int tmp[2];
 	const char *path;

 	nodeoffset = fdt_path_offset(blob, "/aliases");
 	if (nodeoffset >= 0) {
 		path = fdt_getprop(blob, nodeoffset, "pci0", NULL);
 		if (path) {
 			tmp[0] = cpu_to_be32(pci_hose[0].first_busno);
 			tmp[1] = cpu_to_be32(pci_hose[0].last_busno);
 			do_fixup_by_path(blob, path, "bus-range",
 				&tmp, sizeof(tmp), 1);

 			tmp[0] = cpu_to_be32(gd->pci_clk);
 			do_fixup_by_path(blob, path, "clock-frequency",
 				&tmp, sizeof(tmp[0]), 1);
 		}
 #ifdef CONFIG_MPC83XX_PCI2
 		path = fdt_getprop(blob, nodeoffset, "pci1", NULL);
 		if (path) {
 			tmp[0] = cpu_to_be32(pci_hose[0].first_busno);
 			tmp[1] = cpu_to_be32(pci_hose[0].last_busno);
 			do_fixup_by_path(blob, path, "bus-range",
 				&tmp, sizeof(tmp), 1);

 			tmp[0] = cpu_to_be32(gd->pci_clk);
 			do_fixup_by_path(blob, path, "clock-frequency",
 				&tmp, sizeof(tmp[0]), 1);
 		}
 #endif
 	}
 }
 #endif /* CONFIG_OF_LIBFDT */
 #endif /* CONFIG_PCI */
	/*
	* pci.c -- WindRiver SBC8349 PCI board support.
	* Copyright (c) 2006 Wind River Systems, Inc.
	*
	* Based on MPC8349 PCI support but w/o PIB related code.
	*
	* 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 <asm/mmu.h>
	#include <common.h>
	#include <asm/global_data.h>
	#include <pci.h>
	#include <asm/mpc8349_pci.h>
	#include <i2c.h>
	#if defined(CONFIG_OF_LIBFDT)
	#include <libfdt.h>
	#include <fdt_support.h>
	#endif

	DECLARE_GLOBAL_DATA_PTR;

	#ifdef CONFIG_PCI

	/* System RAM mapped to PCI space */
	#define CONFIG_PCI_SYS_MEM_BUS CONFIG_SYS_SDRAM_BASE
	#define CONFIG_PCI_SYS_MEM_PHYS CONFIG_SYS_SDRAM_BASE

	#ifndef CONFIG_PCI_PNP
	static struct pci_config_table pci_mpc8349emds_config_table[] = {
	{PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
	PCI_IDSEL_NUMBER, PCI_ANY_ID,
	pci_cfgfunc_config_device, {PCI_ENET0_IOADDR,
	PCI_ENET0_MEMADDR,
	PCI_COMMAND_MEMORY \| PCI_COMMAND_MASTER
	}
	},
	{}
	};
	#endif

	static struct pci_controller pci_hose[] = {
	{
	#ifndef CONFIG_PCI_PNP
	config_table:pci_mpc8349emds_config_table,
	#endif
	},
	{
	#ifndef CONFIG_PCI_PNP
	config_table:pci_mpc8349emds_config_table,
	#endif
	}
	};

	/**************************************************************************
	* pci_init_board()
	*
	* NOTICE: PCI2 is not supported. There is only one
	* physical PCI slot on the board.
	*
	*/
	void
	pci_init_board(void)
	{
	volatile immap_t * immr;
	volatile clk83xx_t * clk;
	volatile law83xx_t * pci_law;
	volatile pot83xx_t * pci_pot;
	volatile pcictrl83xx_t * pci_ctrl;
	volatile pciconf83xx_t * pci_conf;
	u16 reg16;
	u32 reg32;
	u32 dev;
	struct pci_controller * hose;

	immr = (immap_t *)CONFIG_SYS_IMMR;
	clk = (clk83xx_t *)&immr->clk;
	pci_law = immr->sysconf.pcilaw;
	pci_pot = immr->ios.pot;
	pci_ctrl = immr->pci_ctrl;
	pci_conf = immr->pci_conf;

	hose = &pci_hose[0];

	/*
	* Configure PCI controller and PCI_CLK_OUTPUT both in 66M mode
	*/

	reg32 = clk->occr;
	udelay(2000);
	clk->occr = 0xff000000;
	udelay(2000);

	/*
	* Release PCI RST Output signal
	*/
	pci_ctrl[0].gcr = 0;
	udelay(2000);
	pci_ctrl[0].gcr = 1;

	#ifdef CONFIG_MPC83XX_PCI2
	pci_ctrl[1].gcr = 0;
	udelay(2000);
	pci_ctrl[1].gcr = 1;
	#endif

	/* We need to wait at least a 1sec based on PCI specs */
	{
	int i;

	for (i = 0; i < 1000; ++i)
	udelay (1000);
	}

	/*
	* Configure PCI Local Access Windows
	*/
	pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR;
	pci_law[0].ar = LAWAR_EN \| LAWAR_SIZE_1G;

	pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR;
	pci_law[1].ar = LAWAR_EN \| LAWAR_SIZE_4M;

	/*
	* Configure PCI Outbound Translation Windows
	*/

	/* PCI1 mem space - prefetch */
	pci_pot[0].potar = (CONFIG_SYS_PCI1_MEM_BASE >> 12) & POTAR_TA_MASK;
	pci_pot[0].pobar = (CONFIG_SYS_PCI1_MEM_PHYS >> 12) & POBAR_BA_MASK;
	pci_pot[0].pocmr = POCMR_EN \| POCMR_PREFETCH_EN \| (POCMR_CM_256M & POCMR_CM_MASK);

	/* PCI1 IO space */
	pci_pot[1].potar = (CONFIG_SYS_PCI1_IO_BASE >> 12) & POTAR_TA_MASK;
	pci_pot[1].pobar = (CONFIG_SYS_PCI1_IO_PHYS >> 12) & POBAR_BA_MASK;
	pci_pot[1].pocmr = POCMR_EN \| POCMR_IO \| (POCMR_CM_1M & POCMR_CM_MASK);

	/* PCI1 mmio - non-prefetch mem space */
	pci_pot[2].potar = (CONFIG_SYS_PCI1_MMIO_BASE >> 12) & POTAR_TA_MASK;
	pci_pot[2].pobar = (CONFIG_SYS_PCI1_MMIO_PHYS >> 12) & POBAR_BA_MASK;
	pci_pot[2].pocmr = POCMR_EN \| (POCMR_CM_256M & POCMR_CM_MASK);

	/*
	* Configure PCI Inbound Translation Windows
	*/

	/* we need RAM mapped to PCI space for the devices to
	* access main memory */
	pci_ctrl[0].pitar1 = 0x0;
	pci_ctrl[0].pibar1 = 0x0;
	pci_ctrl[0].piebar1 = 0x0;
	pci_ctrl[0].piwar1 = PIWAR_EN \| PIWAR_PF \| PIWAR_RTT_SNOOP \| PIWAR_WTT_SNOOP \| (__ilog2(gd->ram_size) - 1);

	hose->first_busno = 0;
	hose->last_busno = 0xff;

	/* PCI memory prefetch space */
	pci_set_region(hose->regions + 0,
	CONFIG_SYS_PCI1_MEM_BASE,
	CONFIG_SYS_PCI1_MEM_PHYS,
	CONFIG_SYS_PCI1_MEM_SIZE,
	PCI_REGION_MEM\|PCI_REGION_PREFETCH);

	/* PCI memory space */
	pci_set_region(hose->regions + 1,
	CONFIG_SYS_PCI1_MMIO_BASE,
	CONFIG_SYS_PCI1_MMIO_PHYS,
	CONFIG_SYS_PCI1_MMIO_SIZE,
	PCI_REGION_MEM);

	/* PCI IO space */
	pci_set_region(hose->regions + 2,
	CONFIG_SYS_PCI1_IO_BASE,
	CONFIG_SYS_PCI1_IO_PHYS,
	CONFIG_SYS_PCI1_IO_SIZE,
	PCI_REGION_IO);

	/* System memory space */
	pci_set_region(hose->regions + 3,
	CONFIG_PCI_SYS_MEM_BUS,
	CONFIG_PCI_SYS_MEM_PHYS,
	gd->ram_size,
	PCI_REGION_MEM \| PCI_REGION_SYS_MEMORY);

	hose->region_count = 4;

	pci_setup_indirect(hose,
	(CONFIG_SYS_IMMR+0x8300),
	(CONFIG_SYS_IMMR+0x8304));

	pci_register_hose(hose);

	/*
	* Write to Command register
	*/
	reg16 = 0xff;
	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);
	pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
	pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);

	#ifdef CONFIG_PCI_SCAN_SHOW
	printf("PCI: Bus Dev VenId DevId Class Int\n");
	#endif
	/*
	* Hose scan.
	*/
	hose->last_busno = pci_hose_scan(hose);

	#ifdef CONFIG_MPC83XX_PCI2
	hose = &pci_hose[1];

	/*
	* Configure PCI Outbound Translation Windows
	*/

	/* PCI2 mem space - prefetch */
	pci_pot[3].potar = (CONFIG_SYS_PCI2_MEM_BASE >> 12) & POTAR_TA_MASK;
	pci_pot[3].pobar = (CONFIG_SYS_PCI2_MEM_PHYS >> 12) & POBAR_BA_MASK;
	pci_pot[3].pocmr = POCMR_EN \| POCMR_PCI2 \| POCMR_PREFETCH_EN \| (POCMR_CM_256M & POCMR_CM_MASK);

	/* PCI2 IO space */
	pci_pot[4].potar = (CONFIG_SYS_PCI2_IO_BASE >> 12) & POTAR_TA_MASK;
	pci_pot[4].pobar = (CONFIG_SYS_PCI2_IO_PHYS >> 12) & POBAR_BA_MASK;
	pci_pot[4].pocmr = POCMR_EN \| POCMR_PCI2 \| POCMR_IO \| (POCMR_CM_1M & POCMR_CM_MASK);

	/* PCI2 mmio - non-prefetch mem space */
	pci_pot[5].potar = (CONFIG_SYS_PCI2_MMIO_BASE >> 12) & POTAR_TA_MASK;
	pci_pot[5].pobar = (CONFIG_SYS_PCI2_MMIO_PHYS >> 12) & POBAR_BA_MASK;
	pci_pot[5].pocmr = POCMR_EN \| POCMR_PCI2 \| (POCMR_CM_256M & POCMR_CM_MASK);

	/*
	* Configure PCI Inbound Translation Windows
	*/

	/* we need RAM mapped to PCI space for the devices to
	* access main memory */
	pci_ctrl[1].pitar1 = 0x0;
	pci_ctrl[1].pibar1 = 0x0;
	pci_ctrl[1].piebar1 = 0x0;
	pci_ctrl[1].piwar1 = PIWAR_EN \| PIWAR_PF \| PIWAR_RTT_SNOOP \| PIWAR_WTT_SNOOP \| (__ilog2(gd->ram_size) - 1);

	hose->first_busno = pci_hose[0].last_busno + 1;
	hose->last_busno = 0xff;

	/* PCI memory prefetch space */
	pci_set_region(hose->regions + 0,
	CONFIG_SYS_PCI2_MEM_BASE,
	CONFIG_SYS_PCI2_MEM_PHYS,
	CONFIG_SYS_PCI2_MEM_SIZE,
	PCI_REGION_MEM\|PCI_REGION_PREFETCH);

	/* PCI memory space */
	pci_set_region(hose->regions + 1,
	CONFIG_SYS_PCI2_MMIO_BASE,
	CONFIG_SYS_PCI2_MMIO_PHYS,
	CONFIG_SYS_PCI2_MMIO_SIZE,
	PCI_REGION_MEM);

	/* PCI IO space */
	pci_set_region(hose->regions + 2,
	CONFIG_SYS_PCI2_IO_BASE,
	CONFIG_SYS_PCI2_IO_PHYS,
	CONFIG_SYS_PCI2_IO_SIZE,
	PCI_REGION_IO);

	/* System memory space */
	pci_set_region(hose->regions + 3,
	CONFIG_PCI_SYS_MEM_BUS,
	CONFIG_PCI_SYS_MEM_PHYS,
	gd->ram_size,
	PCI_REGION_MEM \| PCI_REGION_SYS_MEMORY);

	hose->region_count = 4;

	pci_setup_indirect(hose,
	(CONFIG_SYS_IMMR+0x8380),
	(CONFIG_SYS_IMMR+0x8384));

	pci_register_hose(hose);

	/*
	* Write to Command register
	*/
	reg16 = 0xff;
	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);
	pci_hose_write_config_byte(hose, dev, PCI_LATENCY_TIMER, 0x80);
	pci_hose_write_config_byte(hose, dev, PCI_CACHE_LINE_SIZE, 0x08);

	/*
	* Hose scan.
	*/
	hose->last_busno = pci_hose_scan(hose);
	#endif

	}

	#if defined(CONFIG_OF_LIBFDT)
	void ft_pci_setup(void blob, bd_t bd)
	{
	int nodeoffset;
	int tmp[2];
	const char *path;

	nodeoffset = fdt_path_offset(blob, "/aliases");
	if (nodeoffset >= 0) {
	path = fdt_getprop(blob, nodeoffset, "pci0", NULL);
	if (path) {
	tmp[0] = cpu_to_be32(pci_hose[0].first_busno);
	tmp[1] = cpu_to_be32(pci_hose[0].last_busno);
	do_fixup_by_path(blob, path, "bus-range",
	&tmp, sizeof(tmp), 1);

	tmp[0] = cpu_to_be32(gd->pci_clk);
	do_fixup_by_path(blob, path, "clock-frequency",
	&tmp, sizeof(tmp[0]), 1);
	}
	#ifdef CONFIG_MPC83XX_PCI2
	path = fdt_getprop(blob, nodeoffset, "pci1", NULL);
	if (path) {
	tmp[0] = cpu_to_be32(pci_hose[0].first_busno);
	tmp[1] = cpu_to_be32(pci_hose[0].last_busno);
	do_fixup_by_path(blob, path, "bus-range",
	&tmp, sizeof(tmp), 1);

	tmp[0] = cpu_to_be32(gd->pci_clk);
	do_fixup_by_path(blob, path, "clock-frequency",
	&tmp, sizeof(tmp[0]), 1);
	}
	#endif
	}
	}
	#endif /* CONFIG_OF_LIBFDT */
	#endif /* CONFIG_PCI */