arch/ppc/syslib/ppc85xx_setup.c - arm/linux - Git at Google


            
            /*

            
             * MPC85XX common board code

            
             *

            
             * Maintainer: Kumar Gala <galak@kernel.crashing.org>

            
             *

            
             * Copyright 2004 Freescale Semiconductor Inc.

            
             *

            
             * 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.

            
             */


            #include <linux/types.h>

            
            #include <linux/module.h>

            
            #include <linux/init.h>

            
            #include <linux/pci.h>

            
            #include <linux/serial.h>

            
            #include <linux/tty.h>	/* for linux/serial_core.h */

            
            #include <linux/serial_core.h>

            
            #include <linux/serial_8250.h>


            #include <asm/time.h>

            
            #include <asm/mpc85xx.h>

            
            #include <asm/immap_85xx.h>

            
            #include <asm/mmu.h>

            
            #include <asm/ppc_sys.h>

            
            #include <asm/kgdb.h>

            
            #include <asm/machdep.h>


            #include <syslib/ppc85xx_setup.h>


            extern void abort(void);


            /* Return the amount of memory */

            
            unsigned long __init

            
            mpc85xx_find_end_of_memory(void)

            
            {

            
                    bd_t *binfo;


                    binfo = (bd_t *) __res;


                    return binfo->bi_memsize;

            
            }


            /* The decrementer counts at the system (internal) clock freq divided by 8 */

            
            void __init

            
            mpc85xx_calibrate_decr(void)

            
            {

            
                    bd_t *binfo = (bd_t *) __res;

            
                    unsigned int freq, divisor;


                    /* get the core frequency */

            
                    freq = binfo->bi_busfreq;


                    /* The timebase is updated every 8 bus clocks, HID0[SEL_TBCLK] = 0 */

            
                    divisor = 8;

            
                    tb_ticks_per_jiffy = freq / divisor / HZ;

            
                    tb_to_us = mulhwu_scale_factor(freq / divisor, 1000000);


            	/* Set the time base to zero */

            
            	mtspr(SPRN_TBWL, 0);

            
            	mtspr(SPRN_TBWU, 0);


            	/* Clear any pending timer interrupts */

            
            	mtspr(SPRN_TSR, TSR_ENW | TSR_WIS | TSR_DIS | TSR_FIS);


            	/* Enable decrementer interrupt */

            
            	mtspr(SPRN_TCR, TCR_DIE);

            
            }


            #ifdef CONFIG_SERIAL_8250

            
            void __init

            
            mpc85xx_early_serial_map(void)

            
            {

            
            #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)

            
            	struct uart_port serial_req;

            
            #endif

            
            	struct plat_serial8250_port *pdata;

            
            	bd_t *binfo = (bd_t *) __res;

            
            	pdata = (struct plat_serial8250_port *) ppc_sys_get_pdata(MPC85xx_DUART);


            	/* Setup serial port access */

            
            	pdata[0].uartclk = binfo->bi_busfreq;

            
            	pdata[0].mapbase += binfo->bi_immr_base;

            
            	pdata[0].membase = ioremap(pdata[0].mapbase, MPC85xx_UART0_SIZE);


            #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)

            
            	memset(&serial_req, 0, sizeof (serial_req));

            
            	serial_req.iotype = UPIO_MEM;

            
            	serial_req.mapbase = pdata[0].mapbase;

            
            	serial_req.membase = pdata[0].membase;

            
            	serial_req.regshift = 0;


            	gen550_init(0, &serial_req);

            
            #endif


            	pdata[1].uartclk = binfo->bi_busfreq;

            
            	pdata[1].mapbase += binfo->bi_immr_base;

            
            	pdata[1].membase = ioremap(pdata[1].mapbase, MPC85xx_UART0_SIZE);


            #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)

            
            	/* Assume gen550_init() doesn't modify serial_req */

            
            	serial_req.mapbase = pdata[1].mapbase;

            
            	serial_req.membase = pdata[1].membase;


            	gen550_init(1, &serial_req);

            
            #endif

            
            }

            
            #endif


            void

            
            mpc85xx_restart(char *cmd)

            
            {

            
            	local_irq_disable();

            
            	abort();

            
            }


            void

            
            mpc85xx_power_off(void)

            
            {

            
            	local_irq_disable();

            
            	for(;;);

            
            }


            void

            
            mpc85xx_halt(void)

            
            {

            
            	local_irq_disable();

            
            	for(;;);

            
            }


            #ifdef CONFIG_PCI


            #if defined(CONFIG_MPC8555_CDS) || defined(CONFIG_MPC8548_CDS)

            
            extern void mpc85xx_cds_enable_via(struct pci_controller *hose);

            
            extern void mpc85xx_cds_fixup_via(struct pci_controller *hose);

            
            #endif


            static void __init

            
            mpc85xx_setup_pci1(struct pci_controller *hose)

            
            {

            
            	volatile struct ccsr_pci *pci;

            
            	volatile struct ccsr_guts *guts;

            
            	unsigned short temps;

            
            	bd_t *binfo = (bd_t *) __res;


            	pci = ioremap(binfo->bi_immr_base + MPC85xx_PCI1_OFFSET,

            
            		    MPC85xx_PCI1_SIZE);


            	guts = ioremap(binfo->bi_immr_base + MPC85xx_GUTS_OFFSET,

            
            		    MPC85xx_GUTS_SIZE);


            	early_read_config_word(hose, 0, 0, PCI_COMMAND, &temps);

            
            	temps |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;

            
            	early_write_config_word(hose, 0, 0, PCI_COMMAND, temps);


            #define PORDEVSR_PCI	(0x00800000)	/* PCI Mode */

            
            	if (guts->pordevsr & PORDEVSR_PCI) {

            
             		early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80);

            
             	} else {

            
            		/* PCI-X init */

            
            		temps = PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ

            
            			| PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E;

            
            		early_write_config_word(hose, 0, 0, PCIX_COMMAND, temps);

            
            	}


            	/* Disable all windows (except powar0 since its ignored) */

            
            	pci->powar1 = 0;

            
            	pci->powar2 = 0;

            
            	pci->powar3 = 0;

            
            	pci->powar4 = 0;

            
            	pci->piwar1 = 0;

            
            	pci->piwar2 = 0;

            
            	pci->piwar3 = 0;


            	/* Setup Phys:PCI 1:1 outbound mem window @ MPC85XX_PCI1_LOWER_MEM */

            
            	pci->potar1 = (MPC85XX_PCI1_LOWER_MEM >> 12) & 0x000fffff;

            
            	pci->potear1 = 0x00000000;

            
            	pci->powbar1 = (MPC85XX_PCI1_LOWER_MEM >> 12) & 0x000fffff;

            
            	/* Enable, Mem R/W */

            
            	pci->powar1 = 0x80044000 |

            
            	   (__ilog2(MPC85XX_PCI1_UPPER_MEM - MPC85XX_PCI1_LOWER_MEM + 1) - 1);


            	/* Setup outbound IO windows @ MPC85XX_PCI1_IO_BASE */

            
            	pci->potar2 = (MPC85XX_PCI1_LOWER_IO >> 12) & 0x000fffff;

            
            	pci->potear2 = 0x00000000;

            
            	pci->powbar2 = (MPC85XX_PCI1_IO_BASE >> 12) & 0x000fffff;

            
            	/* Enable, IO R/W */

            
            	pci->powar2 = 0x80088000 | (__ilog2(MPC85XX_PCI1_IO_SIZE) - 1);


            	/* Setup 2G inbound Memory Window @ 0 */

            
            	pci->pitar1 = 0x00000000;

            
            	pci->piwbar1 = 0x00000000;

            
            	pci->piwar1 = 0xa0f5501e;	/* Enable, Prefetch, Local

            
            					   Mem, Snoop R/W, 2G */

            
            }


            extern int mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin);

            
            extern int mpc85xx_exclude_device(u_char bus, u_char devfn);


            #ifdef CONFIG_85xx_PCI2

            
            static void __init

            
            mpc85xx_setup_pci2(struct pci_controller *hose)

            
            {

            
            	volatile struct ccsr_pci *pci;

            
            	unsigned short temps;

            
            	bd_t *binfo = (bd_t *) __res;


            	pci = ioremap(binfo->bi_immr_base + MPC85xx_PCI2_OFFSET,

            
            		    MPC85xx_PCI2_SIZE);


            	early_read_config_word(hose, hose->bus_offset, 0, PCI_COMMAND, &temps);

            
            	temps |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;

            
            	early_write_config_word(hose, hose->bus_offset, 0, PCI_COMMAND, temps);

            
            	early_write_config_byte(hose, hose->bus_offset, 0, PCI_LATENCY_TIMER, 0x80);


            	/* Disable all windows (except powar0 since its ignored) */

            
            	pci->powar1 = 0;

            
            	pci->powar2 = 0;

            
            	pci->powar3 = 0;

            
            	pci->powar4 = 0;

            
            	pci->piwar1 = 0;

            
            	pci->piwar2 = 0;

            
            	pci->piwar3 = 0;


            	/* Setup Phys:PCI 1:1 outbound mem window @ MPC85XX_PCI2_LOWER_MEM */

            
            	pci->potar1 = (MPC85XX_PCI2_LOWER_MEM >> 12) & 0x000fffff;

            
            	pci->potear1 = 0x00000000;

            
            	pci->powbar1 = (MPC85XX_PCI2_LOWER_MEM >> 12) & 0x000fffff;

            
            	/* Enable, Mem R/W */

            
            	pci->powar1 = 0x80044000 |

            
            	   (__ilog2(MPC85XX_PCI2_UPPER_MEM - MPC85XX_PCI2_LOWER_MEM + 1) - 1);


            	/* Setup outbound IO windows @ MPC85XX_PCI2_IO_BASE */

            
            	pci->potar2 = (MPC85XX_PCI2_LOWER_IO >> 12) & 0x000fffff;

            
            	pci->potear2 = 0x00000000;

            
            	pci->powbar2 = (MPC85XX_PCI2_IO_BASE >> 12) & 0x000fffff;

            
            	/* Enable, IO R/W */

            
            	pci->powar2 = 0x80088000 | (__ilog2(MPC85XX_PCI2_IO_SIZE) - 1);


            	/* Setup 2G inbound Memory Window @ 0 */

            
            	pci->pitar1 = 0x00000000;

            
            	pci->piwbar1 = 0x00000000;

            
            	pci->piwar1 = 0xa0f5501e;	/* Enable, Prefetch, Local

            
            					   Mem, Snoop R/W, 2G */

            
            }

            
            #endif /* CONFIG_85xx_PCI2 */


            int mpc85xx_pci1_last_busno = 0;


            void __init

            
            mpc85xx_setup_hose(void)

            
            {

            
            	struct pci_controller *hose_a;

            
            #ifdef CONFIG_85xx_PCI2

            
            	struct pci_controller *hose_b;

            
            #endif

            
            	bd_t *binfo = (bd_t *) __res;


            	hose_a = pcibios_alloc_controller();


            	if (!hose_a)

            
            		return;


            	ppc_md.pci_swizzle = common_swizzle;

            
            	ppc_md.pci_map_irq = mpc85xx_map_irq;


            	hose_a->first_busno = 0;

            
            	hose_a->bus_offset = 0;

            
            	hose_a->last_busno = 0xff;


            	setup_indirect_pci(hose_a, binfo->bi_immr_base + PCI1_CFG_ADDR_OFFSET,

            
            			   binfo->bi_immr_base + PCI1_CFG_DATA_OFFSET);

            
            	hose_a->set_cfg_type = 1;


            	mpc85xx_setup_pci1(hose_a);


            	hose_a->pci_mem_offset = MPC85XX_PCI1_MEM_OFFSET;

            
            	hose_a->mem_space.start = MPC85XX_PCI1_LOWER_MEM;

            
            	hose_a->mem_space.end = MPC85XX_PCI1_UPPER_MEM;


            	hose_a->io_space.start = MPC85XX_PCI1_LOWER_IO;

            
            	hose_a->io_space.end = MPC85XX_PCI1_UPPER_IO;

            
            	hose_a->io_base_phys = MPC85XX_PCI1_IO_BASE;

            
            #ifdef CONFIG_85xx_PCI2

            
            	hose_a->io_base_virt =  ioremap(MPC85XX_PCI1_IO_BASE,

            
            					MPC85XX_PCI1_IO_SIZE +

            
            					MPC85XX_PCI2_IO_SIZE);

            
            #else

            
            	hose_a->io_base_virt =  ioremap(MPC85XX_PCI1_IO_BASE,

            
            					MPC85XX_PCI1_IO_SIZE);

            
            #endif

            
            	isa_io_base = (unsigned long)hose_a->io_base_virt;


            	/* setup resources */

            
            	pci_init_resource(&hose_a->mem_resources[0],

            
            			MPC85XX_PCI1_LOWER_MEM,

            
            			MPC85XX_PCI1_UPPER_MEM,

            
            			IORESOURCE_MEM, "PCI1 host bridge");


            	pci_init_resource(&hose_a->io_resource,

            
            			MPC85XX_PCI1_LOWER_IO,

            
            			MPC85XX_PCI1_UPPER_IO,

            
            			IORESOURCE_IO, "PCI1 host bridge");


            	ppc_md.pci_exclude_device = mpc85xx_exclude_device;


            #if defined(CONFIG_MPC8555_CDS) || defined(CONFIG_MPC8548_CDS)

            
            	/* Pre pciauto_bus_scan VIA init */

            
            	mpc85xx_cds_enable_via(hose_a);

            
            #endif


            	hose_a->last_busno = pciauto_bus_scan(hose_a, hose_a->first_busno);


            #if defined(CONFIG_MPC8555_CDS) || defined(CONFIG_MPC8548_CDS)

            
            	/* Post pciauto_bus_scan VIA fixup */

            
            	mpc85xx_cds_fixup_via(hose_a);

            
            #endif


            #ifdef CONFIG_85xx_PCI2

            
            	hose_b = pcibios_alloc_controller();


            	if (!hose_b)

            
            		return;


            	hose_b->bus_offset = hose_a->last_busno + 1;

            
            	hose_b->first_busno = hose_a->last_busno + 1;

            
            	hose_b->last_busno = 0xff;


            	setup_indirect_pci(hose_b, binfo->bi_immr_base + PCI2_CFG_ADDR_OFFSET,

            
            			   binfo->bi_immr_base + PCI2_CFG_DATA_OFFSET);

            
            	hose_b->set_cfg_type = 1;


            	mpc85xx_setup_pci2(hose_b);


            	hose_b->pci_mem_offset = MPC85XX_PCI2_MEM_OFFSET;

            
            	hose_b->mem_space.start = MPC85XX_PCI2_LOWER_MEM;

            
            	hose_b->mem_space.end = MPC85XX_PCI2_UPPER_MEM;


            	hose_b->io_space.start = MPC85XX_PCI2_LOWER_IO;

            
            	hose_b->io_space.end = MPC85XX_PCI2_UPPER_IO;

            
            	hose_b->io_base_phys = MPC85XX_PCI2_IO_BASE;

            
            	hose_b->io_base_virt = hose_a->io_base_virt + MPC85XX_PCI1_IO_SIZE;


            	/* setup resources */

            
            	pci_init_resource(&hose_b->mem_resources[0],

            
            			MPC85XX_PCI2_LOWER_MEM,

            
            			MPC85XX_PCI2_UPPER_MEM,

            
            			IORESOURCE_MEM, "PCI2 host bridge");


            	pci_init_resource(&hose_b->io_resource,

            
            			MPC85XX_PCI2_LOWER_IO,

            
            			MPC85XX_PCI2_UPPER_IO,

            
            			IORESOURCE_IO, "PCI2 host bridge");


            	hose_b->last_busno = pciauto_bus_scan(hose_b, hose_b->first_busno);


            	/* let board code know what the last bus number was on PCI1 */

            
            	mpc85xx_pci1_last_busno = hose_a->last_busno;

            
            #endif

            
            	return;

            
            }

            
            #endif /* CONFIG_PCI */
	/*
	* MPC85XX common board code
	*
	* Maintainer: Kumar Gala <galak@kernel.crashing.org>
	*
	* Copyright 2004 Freescale Semiconductor Inc.
	*
	* 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.
	*/

	#include <linux/types.h>
	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/pci.h>
	#include <linux/serial.h>
	#include <linux/tty.h> /* for linux/serial_core.h */
	#include <linux/serial_core.h>
	#include <linux/serial_8250.h>

	#include <asm/time.h>
	#include <asm/mpc85xx.h>
	#include <asm/immap_85xx.h>
	#include <asm/mmu.h>
	#include <asm/ppc_sys.h>
	#include <asm/kgdb.h>
	#include <asm/machdep.h>

	#include <syslib/ppc85xx_setup.h>

	extern void abort(void);

	/* Return the amount of memory */
	unsigned long __init
	mpc85xx_find_end_of_memory(void)
	{
	bd_t *binfo;

	binfo = (bd_t *) __res;

	return binfo->bi_memsize;
	}

	/* The decrementer counts at the system (internal) clock freq divided by 8 */
	void __init
	mpc85xx_calibrate_decr(void)
	{
	bd_t binfo = (bd_t ) __res;
	unsigned int freq, divisor;

	/* get the core frequency */
	freq = binfo->bi_busfreq;

	/* The timebase is updated every 8 bus clocks, HID0[SEL_TBCLK] = 0 */
	divisor = 8;
	tb_ticks_per_jiffy = freq / divisor / HZ;
	tb_to_us = mulhwu_scale_factor(freq / divisor, 1000000);

	/* Set the time base to zero */
	mtspr(SPRN_TBWL, 0);
	mtspr(SPRN_TBWU, 0);

	/* Clear any pending timer interrupts */
	mtspr(SPRN_TSR, TSR_ENW \| TSR_WIS \| TSR_DIS \| TSR_FIS);

	/* Enable decrementer interrupt */
	mtspr(SPRN_TCR, TCR_DIE);
	}

	#ifdef CONFIG_SERIAL_8250
	void __init
	mpc85xx_early_serial_map(void)
	{
	#if defined(CONFIG_SERIAL_TEXT_DEBUG) \|\| defined(CONFIG_KGDB)
	struct uart_port serial_req;
	#endif
	struct plat_serial8250_port *pdata;
	bd_t binfo = (bd_t ) __res;
	pdata = (struct plat_serial8250_port *) ppc_sys_get_pdata(MPC85xx_DUART);

	/* Setup serial port access */
	pdata[0].uartclk = binfo->bi_busfreq;
	pdata[0].mapbase += binfo->bi_immr_base;
	pdata[0].membase = ioremap(pdata[0].mapbase, MPC85xx_UART0_SIZE);

	#if defined(CONFIG_SERIAL_TEXT_DEBUG) \|\| defined(CONFIG_KGDB)
	memset(&serial_req, 0, sizeof (serial_req));
	serial_req.iotype = UPIO_MEM;
	serial_req.mapbase = pdata[0].mapbase;
	serial_req.membase = pdata[0].membase;
	serial_req.regshift = 0;

	gen550_init(0, &serial_req);
	#endif

	pdata[1].uartclk = binfo->bi_busfreq;
	pdata[1].mapbase += binfo->bi_immr_base;
	pdata[1].membase = ioremap(pdata[1].mapbase, MPC85xx_UART0_SIZE);

	#if defined(CONFIG_SERIAL_TEXT_DEBUG) \|\| defined(CONFIG_KGDB)
	/* Assume gen550_init() doesn't modify serial_req */
	serial_req.mapbase = pdata[1].mapbase;
	serial_req.membase = pdata[1].membase;

	gen550_init(1, &serial_req);
	#endif
	}
	#endif

	void
	mpc85xx_restart(char *cmd)
	{
	local_irq_disable();
	abort();
	}

	void
	mpc85xx_power_off(void)
	{
	local_irq_disable();
	for(;;);
	}

	void
	mpc85xx_halt(void)
	{
	local_irq_disable();
	for(;;);
	}

	#ifdef CONFIG_PCI

	#if defined(CONFIG_MPC8555_CDS) \|\| defined(CONFIG_MPC8548_CDS)
	extern void mpc85xx_cds_enable_via(struct pci_controller *hose);
	extern void mpc85xx_cds_fixup_via(struct pci_controller *hose);
	#endif

	static void __init
	mpc85xx_setup_pci1(struct pci_controller *hose)
	{
	volatile struct ccsr_pci *pci;
	volatile struct ccsr_guts *guts;
	unsigned short temps;
	bd_t binfo = (bd_t ) __res;

	pci = ioremap(binfo->bi_immr_base + MPC85xx_PCI1_OFFSET,
	MPC85xx_PCI1_SIZE);

	guts = ioremap(binfo->bi_immr_base + MPC85xx_GUTS_OFFSET,
	MPC85xx_GUTS_SIZE);

	early_read_config_word(hose, 0, 0, PCI_COMMAND, &temps);
	temps \|= PCI_COMMAND_SERR \| PCI_COMMAND_MASTER \| PCI_COMMAND_MEMORY;
	early_write_config_word(hose, 0, 0, PCI_COMMAND, temps);

	#define PORDEVSR_PCI (0x00800000) /* PCI Mode */
	if (guts->pordevsr & PORDEVSR_PCI) {
	early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80);
	} else {
	/* PCI-X init */
	temps = PCI_X_CMD_MAX_SPLIT \| PCI_X_CMD_MAX_READ
	\| PCI_X_CMD_ERO \| PCI_X_CMD_DPERR_E;
	early_write_config_word(hose, 0, 0, PCIX_COMMAND, temps);
	}

	/* Disable all windows (except powar0 since its ignored) */
	pci->powar1 = 0;
	pci->powar2 = 0;
	pci->powar3 = 0;
	pci->powar4 = 0;
	pci->piwar1 = 0;
	pci->piwar2 = 0;
	pci->piwar3 = 0;

	/* Setup Phys:PCI 1:1 outbound mem window @ MPC85XX_PCI1_LOWER_MEM */
	pci->potar1 = (MPC85XX_PCI1_LOWER_MEM >> 12) & 0x000fffff;
	pci->potear1 = 0x00000000;
	pci->powbar1 = (MPC85XX_PCI1_LOWER_MEM >> 12) & 0x000fffff;
	/* Enable, Mem R/W */
	pci->powar1 = 0x80044000 \|
	(__ilog2(MPC85XX_PCI1_UPPER_MEM - MPC85XX_PCI1_LOWER_MEM + 1) - 1);

	/* Setup outbound IO windows @ MPC85XX_PCI1_IO_BASE */
	pci->potar2 = (MPC85XX_PCI1_LOWER_IO >> 12) & 0x000fffff;
	pci->potear2 = 0x00000000;
	pci->powbar2 = (MPC85XX_PCI1_IO_BASE >> 12) & 0x000fffff;
	/* Enable, IO R/W */
	pci->powar2 = 0x80088000 \| (__ilog2(MPC85XX_PCI1_IO_SIZE) - 1);

	/* Setup 2G inbound Memory Window @ 0 */
	pci->pitar1 = 0x00000000;
	pci->piwbar1 = 0x00000000;
	pci->piwar1 = 0xa0f5501e; /* Enable, Prefetch, Local
	Mem, Snoop R/W, 2G */
	}


	extern int mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin);
	extern int mpc85xx_exclude_device(u_char bus, u_char devfn);

	#ifdef CONFIG_85xx_PCI2
	static void __init
	mpc85xx_setup_pci2(struct pci_controller *hose)
	{
	volatile struct ccsr_pci *pci;
	unsigned short temps;
	bd_t binfo = (bd_t ) __res;

	pci = ioremap(binfo->bi_immr_base + MPC85xx_PCI2_OFFSET,
	MPC85xx_PCI2_SIZE);

	early_read_config_word(hose, hose->bus_offset, 0, PCI_COMMAND, &temps);
	temps \|= PCI_COMMAND_SERR \| PCI_COMMAND_MASTER \| PCI_COMMAND_MEMORY;
	early_write_config_word(hose, hose->bus_offset, 0, PCI_COMMAND, temps);
	early_write_config_byte(hose, hose->bus_offset, 0, PCI_LATENCY_TIMER, 0x80);

	/* Disable all windows (except powar0 since its ignored) */
	pci->powar1 = 0;
	pci->powar2 = 0;
	pci->powar3 = 0;
	pci->powar4 = 0;
	pci->piwar1 = 0;
	pci->piwar2 = 0;
	pci->piwar3 = 0;

	/* Setup Phys:PCI 1:1 outbound mem window @ MPC85XX_PCI2_LOWER_MEM */
	pci->potar1 = (MPC85XX_PCI2_LOWER_MEM >> 12) & 0x000fffff;
	pci->potear1 = 0x00000000;
	pci->powbar1 = (MPC85XX_PCI2_LOWER_MEM >> 12) & 0x000fffff;
	/* Enable, Mem R/W */
	pci->powar1 = 0x80044000 \|
	(__ilog2(MPC85XX_PCI2_UPPER_MEM - MPC85XX_PCI2_LOWER_MEM + 1) - 1);

	/* Setup outbound IO windows @ MPC85XX_PCI2_IO_BASE */
	pci->potar2 = (MPC85XX_PCI2_LOWER_IO >> 12) & 0x000fffff;
	pci->potear2 = 0x00000000;
	pci->powbar2 = (MPC85XX_PCI2_IO_BASE >> 12) & 0x000fffff;
	/* Enable, IO R/W */
	pci->powar2 = 0x80088000 \| (__ilog2(MPC85XX_PCI2_IO_SIZE) - 1);

	/* Setup 2G inbound Memory Window @ 0 */
	pci->pitar1 = 0x00000000;
	pci->piwbar1 = 0x00000000;
	pci->piwar1 = 0xa0f5501e; /* Enable, Prefetch, Local
	Mem, Snoop R/W, 2G */
	}
	#endif /* CONFIG_85xx_PCI2 */

	int mpc85xx_pci1_last_busno = 0;

	void __init
	mpc85xx_setup_hose(void)
	{
	struct pci_controller *hose_a;
	#ifdef CONFIG_85xx_PCI2
	struct pci_controller *hose_b;
	#endif
	bd_t binfo = (bd_t ) __res;

	hose_a = pcibios_alloc_controller();

	if (!hose_a)
	return;

	ppc_md.pci_swizzle = common_swizzle;
	ppc_md.pci_map_irq = mpc85xx_map_irq;

	hose_a->first_busno = 0;
	hose_a->bus_offset = 0;
	hose_a->last_busno = 0xff;

	setup_indirect_pci(hose_a, binfo->bi_immr_base + PCI1_CFG_ADDR_OFFSET,
	binfo->bi_immr_base + PCI1_CFG_DATA_OFFSET);
	hose_a->set_cfg_type = 1;

	mpc85xx_setup_pci1(hose_a);

	hose_a->pci_mem_offset = MPC85XX_PCI1_MEM_OFFSET;
	hose_a->mem_space.start = MPC85XX_PCI1_LOWER_MEM;
	hose_a->mem_space.end = MPC85XX_PCI1_UPPER_MEM;

	hose_a->io_space.start = MPC85XX_PCI1_LOWER_IO;
	hose_a->io_space.end = MPC85XX_PCI1_UPPER_IO;
	hose_a->io_base_phys = MPC85XX_PCI1_IO_BASE;
	#ifdef CONFIG_85xx_PCI2
	hose_a->io_base_virt = ioremap(MPC85XX_PCI1_IO_BASE,
	MPC85XX_PCI1_IO_SIZE +
	MPC85XX_PCI2_IO_SIZE);
	#else
	hose_a->io_base_virt = ioremap(MPC85XX_PCI1_IO_BASE,
	MPC85XX_PCI1_IO_SIZE);
	#endif
	isa_io_base = (unsigned long)hose_a->io_base_virt;

	/* setup resources */
	pci_init_resource(&hose_a->mem_resources[0],
	MPC85XX_PCI1_LOWER_MEM,
	MPC85XX_PCI1_UPPER_MEM,
	IORESOURCE_MEM, "PCI1 host bridge");

	pci_init_resource(&hose_a->io_resource,
	MPC85XX_PCI1_LOWER_IO,
	MPC85XX_PCI1_UPPER_IO,
	IORESOURCE_IO, "PCI1 host bridge");

	ppc_md.pci_exclude_device = mpc85xx_exclude_device;

	#if defined(CONFIG_MPC8555_CDS) \|\| defined(CONFIG_MPC8548_CDS)
	/* Pre pciauto_bus_scan VIA init */
	mpc85xx_cds_enable_via(hose_a);
	#endif

	hose_a->last_busno = pciauto_bus_scan(hose_a, hose_a->first_busno);

	#if defined(CONFIG_MPC8555_CDS) \|\| defined(CONFIG_MPC8548_CDS)
	/* Post pciauto_bus_scan VIA fixup */
	mpc85xx_cds_fixup_via(hose_a);
	#endif

	#ifdef CONFIG_85xx_PCI2
	hose_b = pcibios_alloc_controller();

	if (!hose_b)
	return;

	hose_b->bus_offset = hose_a->last_busno + 1;
	hose_b->first_busno = hose_a->last_busno + 1;
	hose_b->last_busno = 0xff;

	setup_indirect_pci(hose_b, binfo->bi_immr_base + PCI2_CFG_ADDR_OFFSET,
	binfo->bi_immr_base + PCI2_CFG_DATA_OFFSET);
	hose_b->set_cfg_type = 1;

	mpc85xx_setup_pci2(hose_b);

	hose_b->pci_mem_offset = MPC85XX_PCI2_MEM_OFFSET;
	hose_b->mem_space.start = MPC85XX_PCI2_LOWER_MEM;
	hose_b->mem_space.end = MPC85XX_PCI2_UPPER_MEM;

	hose_b->io_space.start = MPC85XX_PCI2_LOWER_IO;
	hose_b->io_space.end = MPC85XX_PCI2_UPPER_IO;
	hose_b->io_base_phys = MPC85XX_PCI2_IO_BASE;
	hose_b->io_base_virt = hose_a->io_base_virt + MPC85XX_PCI1_IO_SIZE;

	/* setup resources */
	pci_init_resource(&hose_b->mem_resources[0],
	MPC85XX_PCI2_LOWER_MEM,
	MPC85XX_PCI2_UPPER_MEM,
	IORESOURCE_MEM, "PCI2 host bridge");

	pci_init_resource(&hose_b->io_resource,
	MPC85XX_PCI2_LOWER_IO,
	MPC85XX_PCI2_UPPER_IO,
	IORESOURCE_IO, "PCI2 host bridge");

	hose_b->last_busno = pciauto_bus_scan(hose_b, hose_b->first_busno);

	/* let board code know what the last bus number was on PCI1 */
	mpc85xx_pci1_last_busno = hose_a->last_busno;
	#endif
	return;
	}
	#endif /* CONFIG_PCI */