arch/ppc/platforms/mvme5100.c - kernel/msm-4.9 - Gitiles

 /*
  * Board setup routines for the Motorola MVME5100.
  *
  * Author: Matt Porter <mporter@mvista.com>
  *
  * 2001-2004 (c) MontaVista, Software, Inc.  This file is licensed under
  * the terms of the GNU General Public License version 2.  This program
  * is licensed "as is" without any warranty of any kind, whether express
  * or implied.
  */

 #include <linux/stddef.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/pci.h>
 #include <linux/initrd.h>
 #include <linux/console.h>
 #include <linux/delay.h>
 #include <linux/ide.h>
 #include <linux/seq_file.h>
 #include <linux/kdev_t.h>
 #include <linux/root_dev.h>

 #include <asm/system.h>
 #include <asm/pgtable.h>
 #include <asm/page.h>
 #include <asm/dma.h>
 #include <asm/io.h>
 #include <asm/machdep.h>
 #include <asm/open_pic.h>
 #include <asm/i8259.h>
 #include <asm/todc.h>
 #include <asm/pci-bridge.h>
 #include <asm/bootinfo.h>
 #include <asm/hawk.h>

 #include <platforms/pplus.h>
 #include <platforms/mvme5100.h>

 static u_char mvme5100_openpic_initsenses[16] __initdata = {
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* i8259 cascade */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* TL16C550 UART 1,2 */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Enet1 front panel or P2 */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Hawk Watchdog 1,2 */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* DS1621 thermal alarm */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Universe II LINT0# */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Universe II LINT1# */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Universe II LINT2# */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Universe II LINT3# */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PMC1 INTA#, PMC2 INTB# */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PMC1 INTB#, PMC2 INTC# */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PMC1 INTC#, PMC2 INTD# */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PMC1 INTD#, PMC2 INTA# */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Enet 2 (front panel) */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* Abort Switch */
 	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* RTC Alarm */
 };

 static inline int
 mvme5100_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
 {
 	int irq;

 	static char pci_irq_table[][4] =
 	/*
 	 *	PCI IDSEL/INTPIN->INTLINE
 	 * 	   A   B   C   D
 	 */
 	{
 		{  0,  0,  0,  0 },	/* IDSEL 11 - Winbond */
 		{  0,  0,  0,  0 },	/* IDSEL 12 - unused */
 		{ 21, 22, 23, 24 },	/* IDSEL 13 - Universe II */
 		{ 18,  0,  0,  0 },	/* IDSEL 14 - Enet 1 */
 		{  0,  0,  0,  0 },	/* IDSEL 15 - unused */
 		{ 25, 26, 27, 28 },	/* IDSEL 16 - PMC Slot 1 */
 		{ 28, 25, 26, 27 },	/* IDSEL 17 - PMC Slot 2 */
 		{  0,  0,  0,  0 },	/* IDSEL 18 - unused */
 		{ 29,  0,  0,  0 },	/* IDSEL 19 - Enet 2 */
 		{  0,  0,  0,  0 },	/* IDSEL 20 - PMCSPAN */
 	};

 	const long min_idsel = 11, max_idsel = 20, irqs_per_slot = 4;
 	irq = PCI_IRQ_TABLE_LOOKUP;
 	/* If lookup is zero, always return 0 */
 	if (!irq)
 		return 0;
 	else
 #ifdef CONFIG_MVME5100_IPMC761_PRESENT
 	/* If IPMC761 present, return table value */
 	return irq;
 #else
 	/* If IPMC761 not present, we don't have an i8259 so adjust */
 	return (irq - NUM_8259_INTERRUPTS);
 #endif
 }

 static void
 mvme5100_pcibios_fixup_resources(struct pci_dev *dev)
 {
 	int i;

 	if ((dev->vendor == PCI_VENDOR_ID_MOTOROLA) &&
 			(dev->device == PCI_DEVICE_ID_MOTOROLA_HAWK))
 		for (i=0; i<DEVICE_COUNT_RESOURCE; i++)
 		{
 			dev->resource[i].start = 0;
 			dev->resource[i].end = 0;
 		}
 }

 static void __init
 mvme5100_setup_bridge(void)
 {
 	struct pci_controller*	hose;

 	hose = pcibios_alloc_controller();

 	if (!hose)
 		return;

 	hose->first_busno = 0;
 	hose->last_busno = 0xff;
 	hose->pci_mem_offset = MVME5100_PCI_MEM_OFFSET;

 	pci_init_resource(&hose->io_resource, MVME5100_PCI_LOWER_IO,
 			MVME5100_PCI_UPPER_IO, IORESOURCE_IO,
 			"PCI host bridge");

 	pci_init_resource(&hose->mem_resources[0], MVME5100_PCI_LOWER_MEM,
 			MVME5100_PCI_UPPER_MEM, IORESOURCE_MEM,
 			"PCI host bridge");

 	hose->io_space.start = MVME5100_PCI_LOWER_IO;
 	hose->io_space.end = MVME5100_PCI_UPPER_IO;
 	hose->mem_space.start = MVME5100_PCI_LOWER_MEM;
 	hose->mem_space.end = MVME5100_PCI_UPPER_MEM;
 	hose->io_base_virt = (void *)MVME5100_ISA_IO_BASE;

 	/* Use indirect method of Hawk */
 	setup_indirect_pci(hose, MVME5100_PCI_CONFIG_ADDR,
 			MVME5100_PCI_CONFIG_DATA);

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

 	ppc_md.pcibios_fixup_resources = mvme5100_pcibios_fixup_resources;
 	ppc_md.pci_swizzle = common_swizzle;
 	ppc_md.pci_map_irq = mvme5100_map_irq;
 }

 static void __init
 mvme5100_setup_arch(void)
 {
 	if ( ppc_md.progress )
 		ppc_md.progress("mvme5100_setup_arch: enter", 0);

 	loops_per_jiffy = 50000000 / HZ;

 #ifdef CONFIG_BLK_DEV_INITRD
 	if (initrd_start)
 		ROOT_DEV = Root_RAM0;
 	else
 #endif
 #ifdef	CONFIG_ROOT_NFS
 		ROOT_DEV = Root_NFS;
 #else
 		ROOT_DEV = Root_SDA2;
 #endif

 	if ( ppc_md.progress )
 		ppc_md.progress("mvme5100_setup_arch: find_bridges", 0);

 	/* Setup PCI host bridge */
 	mvme5100_setup_bridge();

 	/* Find and map our OpenPIC */
 	hawk_mpic_init(MVME5100_PCI_MEM_OFFSET);
 	OpenPIC_InitSenses = mvme5100_openpic_initsenses;
 	OpenPIC_NumInitSenses = sizeof(mvme5100_openpic_initsenses);

 	printk("MVME5100 port (C) 2001 MontaVista Software, Inc. (source@mvista.com)\n");

 	if ( ppc_md.progress )
 		ppc_md.progress("mvme5100_setup_arch: exit", 0);

 	return;
 }

 static void __init
 mvme5100_init2(void)
 {
 #ifdef CONFIG_MVME5100_IPMC761_PRESENT
 		request_region(0x00,0x20,"dma1");
 		request_region(0x20,0x20,"pic1");
 		request_region(0x40,0x20,"timer");
 		request_region(0x80,0x10,"dma page reg");
 		request_region(0xa0,0x20,"pic2");
 		request_region(0xc0,0x20,"dma2");
 #endif
 	return;
 }

 /*
  * Interrupt setup and service.
  * Have MPIC on HAWK and cascaded 8259s on Winbond cascaded to MPIC.
  */
 static void __init
 mvme5100_init_IRQ(void)
 {
 #ifdef CONFIG_MVME5100_IPMC761_PRESENT
 	int i;
 #endif

 	if ( ppc_md.progress )
 		ppc_md.progress("init_irq: enter", 0);

 	openpic_set_sources(0, 16, OpenPIC_Addr + 0x10000);
 #ifdef CONFIG_MVME5100_IPMC761_PRESENT
 	openpic_init(NUM_8259_INTERRUPTS);
 	openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade",
 			&i8259_irq);

 	i8259_init(0, 0);
 #else
 	openpic_init(0);
 #endif

 	if ( ppc_md.progress )
 		ppc_md.progress("init_irq: exit", 0);

 	return;
 }

 /*
  * Set BAT 3 to map 0xf0000000 to end of physical memory space.
  */
 static __inline__ void
 mvme5100_set_bat(void)
 {
 	mb();
 	mtspr(SPRN_DBAT1U, 0xf0001ffe);
 	mtspr(SPRN_DBAT1L, 0xf000002a);
 	mb();
 }

 static unsigned long __init
 mvme5100_find_end_of_memory(void)
 {
 	return hawk_get_mem_size(MVME5100_HAWK_SMC_BASE);
 }

 static void __init
 mvme5100_map_io(void)
 {
 	io_block_mapping(0xfe000000, 0xfe000000, 0x02000000, _PAGE_IO);
 	ioremap_base = 0xfe000000;
 }

 static void
 mvme5100_reset_board(void)
 {
 	local_irq_disable();

 	/* Set exception prefix high - to the firmware */
 	_nmask_and_or_msr(0, MSR_IP);

 	out_8((u_char *)MVME5100_BOARD_MODRST_REG, 0x01);

 	return;
 }

 static void
 mvme5100_restart(char *cmd)
 {
 	volatile ulong i = 10000000;

 	mvme5100_reset_board();

 	while (i-- > 0);
 	panic("restart failed\n");
 }

 static void
 mvme5100_halt(void)
 {
 	local_irq_disable();
 	while (1);
 }

 static void
 mvme5100_power_off(void)
 {
 	mvme5100_halt();
 }

 static int
 mvme5100_show_cpuinfo(struct seq_file *m)
 {
 	seq_printf(m, "vendor\t\t: Motorola\n");
 	seq_printf(m, "machine\t\t: MVME5100\n");

 	return 0;
 }

 TODC_ALLOC();

 void __init
 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 	      unsigned long r6, unsigned long r7)
 {
 	parse_bootinfo(find_bootinfo());
 	mvme5100_set_bat();

 	isa_io_base = MVME5100_ISA_IO_BASE;
 	isa_mem_base = MVME5100_ISA_MEM_BASE;
 	pci_dram_offset = MVME5100_PCI_DRAM_OFFSET;

 	ppc_md.setup_arch = mvme5100_setup_arch;
 	ppc_md.show_cpuinfo = mvme5100_show_cpuinfo;
 	ppc_md.init_IRQ = mvme5100_init_IRQ;
 	ppc_md.get_irq = openpic_get_irq;
 	ppc_md.init = mvme5100_init2;

 	ppc_md.restart = mvme5100_restart;
 	ppc_md.power_off = mvme5100_power_off;
 	ppc_md.halt = mvme5100_halt;

 	ppc_md.find_end_of_memory = mvme5100_find_end_of_memory;
 	ppc_md.setup_io_mappings = mvme5100_map_io;

 	TODC_INIT(TODC_TYPE_MK48T37, MVME5100_NVRAM_AS0, MVME5100_NVRAM_AS1,
 			MVME5100_NVRAM_DATA, 8);

 	ppc_md.time_init = todc_time_init;
 	ppc_md.set_rtc_time = todc_set_rtc_time;
 	ppc_md.get_rtc_time = todc_get_rtc_time;
 	ppc_md.calibrate_decr = todc_calibrate_decr;

 	ppc_md.nvram_read_val = todc_m48txx_read_val;
 	ppc_md.nvram_write_val = todc_m48txx_write_val;
 }
	/*
	* Board setup routines for the Motorola MVME5100.
	*
	* Author: Matt Porter <mporter@mvista.com>
	*
	* 2001-2004 (c) MontaVista, Software, Inc. This file is licensed under
	* the terms of the GNU General Public License version 2. This program
	* is licensed "as is" without any warranty of any kind, whether express
	* or implied.
	*/

	#include <linux/stddef.h>
	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <linux/errno.h>
	#include <linux/pci.h>
	#include <linux/initrd.h>
	#include <linux/console.h>
	#include <linux/delay.h>
	#include <linux/ide.h>
	#include <linux/seq_file.h>
	#include <linux/kdev_t.h>
	#include <linux/root_dev.h>

	#include <asm/system.h>
	#include <asm/pgtable.h>
	#include <asm/page.h>
	#include <asm/dma.h>
	#include <asm/io.h>
	#include <asm/machdep.h>
	#include <asm/open_pic.h>
	#include <asm/i8259.h>
	#include <asm/todc.h>
	#include <asm/pci-bridge.h>
	#include <asm/bootinfo.h>
	#include <asm/hawk.h>

	#include <platforms/pplus.h>
	#include <platforms/mvme5100.h>

	static u_char mvme5100_openpic_initsenses[16] __initdata = {
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_POSITIVE), /* i8259 cascade */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* TL16C550 UART 1,2 */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* Enet1 front panel or P2 */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* Hawk Watchdog 1,2 */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* DS1621 thermal alarm */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* Universe II LINT0# */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* Universe II LINT1# */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* Universe II LINT2# */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* Universe II LINT3# */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* PMC1 INTA#, PMC2 INTB# */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* PMC1 INTB#, PMC2 INTC# */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* PMC1 INTC#, PMC2 INTD# */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* PMC1 INTD#, PMC2 INTA# */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* Enet 2 (front panel) */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* Abort Switch */
	(IRQ_SENSE_LEVEL \| IRQ_POLARITY_NEGATIVE), /* RTC Alarm */
	};

	static inline int
	mvme5100_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
	{
	int irq;

	static char pci_irq_table[][4] =
	/*
	* PCI IDSEL/INTPIN->INTLINE
	* A B C D
	*/
	{
	{ 0, 0, 0, 0 }, /* IDSEL 11 - Winbond */
	{ 0, 0, 0, 0 }, /* IDSEL 12 - unused */
	{ 21, 22, 23, 24 }, /* IDSEL 13 - Universe II */
	{ 18, 0, 0, 0 }, /* IDSEL 14 - Enet 1 */
	{ 0, 0, 0, 0 }, /* IDSEL 15 - unused */
	{ 25, 26, 27, 28 }, /* IDSEL 16 - PMC Slot 1 */
	{ 28, 25, 26, 27 }, /* IDSEL 17 - PMC Slot 2 */
	{ 0, 0, 0, 0 }, /* IDSEL 18 - unused */
	{ 29, 0, 0, 0 }, /* IDSEL 19 - Enet 2 */
	{ 0, 0, 0, 0 }, /* IDSEL 20 - PMCSPAN */
	};

	const long min_idsel = 11, max_idsel = 20, irqs_per_slot = 4;
	irq = PCI_IRQ_TABLE_LOOKUP;
	/* If lookup is zero, always return 0 */
	if (!irq)
	return 0;
	else
	#ifdef CONFIG_MVME5100_IPMC761_PRESENT
	/* If IPMC761 present, return table value */
	return irq;
	#else
	/* If IPMC761 not present, we don't have an i8259 so adjust */
	return (irq - NUM_8259_INTERRUPTS);
	#endif
	}

	static void
	mvme5100_pcibios_fixup_resources(struct pci_dev *dev)
	{
	int i;

	if ((dev->vendor == PCI_VENDOR_ID_MOTOROLA) &&
	(dev->device == PCI_DEVICE_ID_MOTOROLA_HAWK))
	for (i=0; i<DEVICE_COUNT_RESOURCE; i++)
	{
	dev->resource[i].start = 0;
	dev->resource[i].end = 0;
	}
	}

	static void __init
	mvme5100_setup_bridge(void)
	{
	struct pci_controller* hose;

	hose = pcibios_alloc_controller();

	if (!hose)
	return;

	hose->first_busno = 0;
	hose->last_busno = 0xff;
	hose->pci_mem_offset = MVME5100_PCI_MEM_OFFSET;

	pci_init_resource(&hose->io_resource, MVME5100_PCI_LOWER_IO,
	MVME5100_PCI_UPPER_IO, IORESOURCE_IO,
	"PCI host bridge");

	pci_init_resource(&hose->mem_resources[0], MVME5100_PCI_LOWER_MEM,
	MVME5100_PCI_UPPER_MEM, IORESOURCE_MEM,
	"PCI host bridge");

	hose->io_space.start = MVME5100_PCI_LOWER_IO;
	hose->io_space.end = MVME5100_PCI_UPPER_IO;
	hose->mem_space.start = MVME5100_PCI_LOWER_MEM;
	hose->mem_space.end = MVME5100_PCI_UPPER_MEM;
	hose->io_base_virt = (void *)MVME5100_ISA_IO_BASE;

	/* Use indirect method of Hawk */
	setup_indirect_pci(hose, MVME5100_PCI_CONFIG_ADDR,
	MVME5100_PCI_CONFIG_DATA);

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

	ppc_md.pcibios_fixup_resources = mvme5100_pcibios_fixup_resources;
	ppc_md.pci_swizzle = common_swizzle;
	ppc_md.pci_map_irq = mvme5100_map_irq;
	}

	static void __init
	mvme5100_setup_arch(void)
	{
	if ( ppc_md.progress )
	ppc_md.progress("mvme5100_setup_arch: enter", 0);

	loops_per_jiffy = 50000000 / HZ;

	#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start)
	ROOT_DEV = Root_RAM0;
	else
	#endif
	#ifdef CONFIG_ROOT_NFS
	ROOT_DEV = Root_NFS;
	#else
	ROOT_DEV = Root_SDA2;
	#endif

	if ( ppc_md.progress )
	ppc_md.progress("mvme5100_setup_arch: find_bridges", 0);

	/* Setup PCI host bridge */
	mvme5100_setup_bridge();

	/* Find and map our OpenPIC */
	hawk_mpic_init(MVME5100_PCI_MEM_OFFSET);
	OpenPIC_InitSenses = mvme5100_openpic_initsenses;
	OpenPIC_NumInitSenses = sizeof(mvme5100_openpic_initsenses);

	printk("MVME5100 port (C) 2001 MontaVista Software, Inc. (source@mvista.com)\n");

	if ( ppc_md.progress )
	ppc_md.progress("mvme5100_setup_arch: exit", 0);

	return;
	}

	static void __init
	mvme5100_init2(void)
	{
	#ifdef CONFIG_MVME5100_IPMC761_PRESENT
	request_region(0x00,0x20,"dma1");
	request_region(0x20,0x20,"pic1");
	request_region(0x40,0x20,"timer");
	request_region(0x80,0x10,"dma page reg");
	request_region(0xa0,0x20,"pic2");
	request_region(0xc0,0x20,"dma2");
	#endif
	return;
	}

	/*
	* Interrupt setup and service.
	* Have MPIC on HAWK and cascaded 8259s on Winbond cascaded to MPIC.
	*/
	static void __init
	mvme5100_init_IRQ(void)
	{
	#ifdef CONFIG_MVME5100_IPMC761_PRESENT
	int i;
	#endif

	if ( ppc_md.progress )
	ppc_md.progress("init_irq: enter", 0);

	openpic_set_sources(0, 16, OpenPIC_Addr + 0x10000);
	#ifdef CONFIG_MVME5100_IPMC761_PRESENT
	openpic_init(NUM_8259_INTERRUPTS);
	openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade",
	&i8259_irq);

	i8259_init(0, 0);
	#else
	openpic_init(0);
	#endif

	if ( ppc_md.progress )
	ppc_md.progress("init_irq: exit", 0);

	return;
	}

	/*
	* Set BAT 3 to map 0xf0000000 to end of physical memory space.
	*/
	static __inline__ void
	mvme5100_set_bat(void)
	{
	mb();
	mtspr(SPRN_DBAT1U, 0xf0001ffe);
	mtspr(SPRN_DBAT1L, 0xf000002a);
	mb();
	}

	static unsigned long __init
	mvme5100_find_end_of_memory(void)
	{
	return hawk_get_mem_size(MVME5100_HAWK_SMC_BASE);
	}

	static void __init
	mvme5100_map_io(void)
	{
	io_block_mapping(0xfe000000, 0xfe000000, 0x02000000, _PAGE_IO);
	ioremap_base = 0xfe000000;
	}

	static void
	mvme5100_reset_board(void)
	{
	local_irq_disable();

	/* Set exception prefix high - to the firmware */
	_nmask_and_or_msr(0, MSR_IP);

	out_8((u_char *)MVME5100_BOARD_MODRST_REG, 0x01);

	return;
	}

	static void
	mvme5100_restart(char *cmd)
	{
	volatile ulong i = 10000000;

	mvme5100_reset_board();

	while (i-- > 0);
	panic("restart failed\n");
	}

	static void
	mvme5100_halt(void)
	{
	local_irq_disable();
	while (1);
	}

	static void
	mvme5100_power_off(void)
	{
	mvme5100_halt();
	}

	static int
	mvme5100_show_cpuinfo(struct seq_file *m)
	{
	seq_printf(m, "vendor\t\t: Motorola\n");
	seq_printf(m, "machine\t\t: MVME5100\n");

	return 0;
	}

	TODC_ALLOC();

	void __init
	platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
	unsigned long r6, unsigned long r7)
	{
	parse_bootinfo(find_bootinfo());
	mvme5100_set_bat();

	isa_io_base = MVME5100_ISA_IO_BASE;
	isa_mem_base = MVME5100_ISA_MEM_BASE;
	pci_dram_offset = MVME5100_PCI_DRAM_OFFSET;

	ppc_md.setup_arch = mvme5100_setup_arch;
	ppc_md.show_cpuinfo = mvme5100_show_cpuinfo;
	ppc_md.init_IRQ = mvme5100_init_IRQ;
	ppc_md.get_irq = openpic_get_irq;
	ppc_md.init = mvme5100_init2;

	ppc_md.restart = mvme5100_restart;
	ppc_md.power_off = mvme5100_power_off;
	ppc_md.halt = mvme5100_halt;

	ppc_md.find_end_of_memory = mvme5100_find_end_of_memory;
	ppc_md.setup_io_mappings = mvme5100_map_io;

	TODC_INIT(TODC_TYPE_MK48T37, MVME5100_NVRAM_AS0, MVME5100_NVRAM_AS1,
	MVME5100_NVRAM_DATA, 8);

	ppc_md.time_init = todc_time_init;
	ppc_md.set_rtc_time = todc_set_rtc_time;
	ppc_md.get_rtc_time = todc_get_rtc_time;
	ppc_md.calibrate_decr = todc_calibrate_decr;

	ppc_md.nvram_read_val = todc_m48txx_read_val;
	ppc_md.nvram_write_val = todc_m48txx_write_val;
	}