patch-2.4.20 linux-2.4.20/arch/ppc/kernel/prep_setup.c

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diff -urN linux-2.4.19/arch/ppc/kernel/prep_setup.c linux-2.4.20/arch/ppc/kernel/prep_setup.c
@@ -1,906 +0,0 @@
-/*
- * BK Id: SCCS/s.prep_setup.c 1.52 04/05/02 10:17:22 trini
- */
-/*
- *  linux/arch/ppc/kernel/setup.c
- *
- *  Copyright (C) 1995  Linus Torvalds
- *  Adapted from 'alpha' version by Gary Thomas
- *  Modified by Cort Dougan (cort@cs.nmt.edu)
- *
- * Support for PReP (Motorola MTX/MVME)
- * by Troy Benjegerdes (hozer@drgw.net)
- */
-
-/*
- * bootup setup stuff..
- */
-
-#include <linux/config.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/stddef.h>
-#include <linux/unistd.h>
-#include <linux/ptrace.h>
-#include <linux/slab.h>
-#include <linux/user.h>
-#include <linux/a.out.h>
-#include <linux/tty.h>
-#include <linux/major.h>
-#include <linux/interrupt.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/blk.h>
-#include <linux/ioport.h>
-#include <linux/console.h>
-#include <linux/timex.h>
-#include <linux/pci.h>
-#include <linux/ide.h>
-#include <linux/seq_file.h>
-
-#include <asm/sections.h>
-#include <asm/mmu.h>
-#include <asm/processor.h>
-#include <asm/residual.h>
-#include <asm/io.h>
-#include <asm/pgtable.h>
-#include <asm/cache.h>
-#include <asm/dma.h>
-#include <asm/machdep.h>
-#include <asm/mk48t59.h>
-#include <asm/prep_nvram.h>
-#include <asm/raven.h>
-#include <asm/keyboard.h>
-#include <asm/vga.h>
-#include <asm/time.h>
-
-#include "local_irq.h"
-#include "i8259.h"
-#include "open_pic.h"
-
-#if defined(CONFIG_SOUND) || defined(CONFIG_SOUND_MODULE)
-#include <../drivers/sound/sound_config.h>
-#include <../drivers/sound/dev_table.h>
-#endif
-
-unsigned char ucSystemType;
-unsigned char ucBoardRev;
-unsigned char ucBoardRevMaj, ucBoardRevMin;
-
-extern unsigned long mc146818_get_rtc_time(void);
-extern int mc146818_set_rtc_time(unsigned long nowtime);
-extern unsigned long mk48t59_get_rtc_time(void);
-extern int mk48t59_set_rtc_time(unsigned long nowtime);
-
-extern unsigned char prep_nvram_read_val(int addr);
-extern void prep_nvram_write_val(int addr,
-				 unsigned char val);
-extern unsigned char rs_nvram_read_val(int addr);
-extern void rs_nvram_write_val(int addr,
-				 unsigned char val);
-extern void ibm_prep_init(void);
-
-extern int pckbd_setkeycode(unsigned int scancode, unsigned int keycode);
-extern int pckbd_getkeycode(unsigned int scancode);
-extern int pckbd_translate(unsigned char scancode, unsigned char *keycode,
-		char raw_mode);
-extern char pckbd_unexpected_up(unsigned char keycode);
-extern void pckbd_leds(unsigned char leds);
-extern void pckbd_init_hw(void);
-extern unsigned char pckbd_sysrq_xlate[];
-
-extern void prep_find_bridges(void);
-extern char saved_command_line[];
-
-int _prep_type;
-
-#define cached_21	(((char *)(ppc_cached_irq_mask))[3])
-#define cached_A1	(((char *)(ppc_cached_irq_mask))[2])
-
-/* for the mac fs */
-kdev_t boot_dev;
-/* used in nasty hack for sound - see prep_setup_arch() -- Cort */
-long ppc_cs4232_dma, ppc_cs4232_dma2;
-
-extern PTE *Hash, *Hash_end;
-extern unsigned long Hash_size, Hash_mask;
-extern int probingmem;
-extern unsigned long loops_per_jiffy;
-
-#ifdef CONFIG_SOUND_MODULE
-EXPORT_SYMBOL(ppc_cs4232_dma);
-EXPORT_SYMBOL(ppc_cs4232_dma2);
-#endif
-
-static int __prep
-prep_show_cpuinfo(struct seq_file *m)
-{
-	extern char *Motherboard_map_name;
-	int cachew;
-#ifdef CONFIG_PREP_RESIDUAL
-	int i;
-#endif
-
-	seq_printf(m, "machine\t\t: PReP %s\n", Motherboard_map_name);
-
-	switch ( _prep_type ) {
-	case _PREP_IBM:
-		cachew = inw(0x80c);
-		if (cachew & (1<<6))
-			seq_printf(m, "Upgrade CPU\n");
-		seq_printf(m, "L2\t\t: ");
-		if (cachew & (1<<7)) {
-			seq_printf(m, "not present\n");
-			goto no_l2;
-		}
-		seq_printf(m, "%sKb,", (cachew & (1 << 10))? "512" : "256");
-		seq_printf(m, "%ssync\n", (cachew & (1 << 15))? "" : "a");
-		break;
-	case _PREP_Motorola:
-		cachew = *((unsigned char *)CACHECRBA);
-		seq_printf(m, "L2\t\t: ");
-		switch (cachew & L2CACHE_MASK) {
-		case L2CACHE_512KB:
-			seq_printf(m, "512Kb");
-			break;
-		case L2CACHE_256KB:
-			seq_printf(m, "256Kb");
-			break;
-		case L2CACHE_1MB:
-			seq_printf(m, "1MB");
-			break;
-		case L2CACHE_NONE:
-			seq_printf(m, "none\n");
-			goto no_l2;
-			break;
-		default:
-			seq_printf(m, "%x\n", cachew);
-		}
-		
-		seq_printf(m, ", parity %s",
-			   (cachew & L2CACHE_PARITY)? "enabled" : "disabled");
-
-		seq_printf(m, " SRAM:");
-		
-		switch ( ((cachew & 0xf0) >> 4) & ~(0x3) ) {
-		case 1: seq_printf(m, "synchronous,parity,flow-through\n");
-			break;
-		case 2: seq_printf(m, "asynchronous,no parity\n");
-			break;
-		case 3: seq_printf(m, "asynchronous,parity\n");
-			break;
-		default:seq_printf(m, "synchronous,pipelined,no parity\n");
-			break;
-		}
-		break;
-	default:
-		break;
-	}
-
-no_l2:
-#ifdef CONFIG_PREP_RESIDUAL
-	if (res->ResidualLength != 0) {
-		/* print info about SIMMs */
-		seq_printf(m, "simms\t\t: ");
-		for (i = 0; (res->ActualNumMemories) && (i < MAX_MEMS); i++) {
-			if (res->Memories[i].SIMMSize != 0)
-				seq_printf(m, "%d:%ldM ", i,
-					(res->Memories[i].SIMMSize > 1024) ? 
-					res->Memories[i].SIMMSize>>20 : 
-					res->Memories[i].SIMMSize);
-		}
-		seq_printf(m, "\n");
-	}
-#endif
-
-	return 0;
-}
-
-static int __prep
-prep_show_percpuinfo(struct seq_file *m, int i)
-{
-	/* PREP's without residual data will give incorrect values here */
-	seq_printf(m, "clock\t\t: ");
-#ifdef CONFIG_PREP_RESIDUAL	
-	if (res->ResidualLength)
-		seq_printf(m, "%ldMHz\n",
-			   (res->VitalProductData.ProcessorHz > 1024) ?
-			   res->VitalProductData.ProcessorHz / 1000000 :
-			   res->VitalProductData.ProcessorHz);
-	else
-#endif /* CONFIG_PREP_RESIDUAL */
-		seq_printf(m, "???\n");
-
-	return 0;
-}
-
-static void __init
-prep_setup_arch(void)
-{
-	unsigned char reg;
-#if 0 /* unused?? */
-	unsigned char ucMothMemType;
-	unsigned char ucEquipPres1;
-#endif
-
-	/* init to some ~sane value until calibrate_delay() runs */
-	loops_per_jiffy = 50000000;
-	
-	/* Lookup PCI host bridges */
-	prep_find_bridges();
-	
-	/* Set up floppy in PS/2 mode */
-	outb(0x09, SIO_CONFIG_RA);
-	reg = inb(SIO_CONFIG_RD);
-	reg = (reg & 0x3F) | 0x40;
-	outb(reg, SIO_CONFIG_RD);
-	outb(reg, SIO_CONFIG_RD);	/* Have to write twice to change! */
-
-	/* we should determine this according to what we find! -- Cort */
-	switch ( _prep_type )
-	{
-	case _PREP_IBM:
-		/* Enable L2.  Assume we don't need to flush -- Cort*/
-		*(unsigned char *)(0x8000081c) |= 3;
-		ROOT_DEV = to_kdev_t(0x0301); /* hda1 */
-		break;
-	case _PREP_Motorola:
-		/* Enable L2.  Assume we don't need to flush -- Cort*/
-		*(unsigned char *)(0x8000081c) |= 3;
-#ifdef CONFIG_BLK_DEV_INITRD
-		if (initrd_start)
-			ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0); /* /dev/ram */
-		else
-#endif
-#ifdef CONFIG_ROOT_NFS
-			ROOT_DEV = to_kdev_t(0x00ff); /* /dev/nfs */
-#else
-			ROOT_DEV = to_kdev_t(0x0802); /* /dev/sda2 */
-#endif
-		break;
-	}
-
-	/* Read in NVRAM data */ 
-	init_prep_nvram();
-
-	/* if no bootargs, look in NVRAM */
-	if ( cmd_line[0] == '\0' ) {
-		char *bootargs;
-		 bootargs = prep_nvram_get_var("bootargs");
-		 if (bootargs != NULL) {
-			 strcpy(cmd_line, bootargs);
-			 /* again.. */
-			 strcpy(saved_command_line, cmd_line);
-		}
-	}
-
-#ifdef CONFIG_SOUND_CS4232
-	/*
-	 * setup proper values for the cs4232 driver so we don't have
-	 * to recompile for the motorola or ibm workstations sound systems.
-	 * This is a really nasty hack, but unless we change the driver
-	 * it's the only way to support both addrs from one binary.
-	 * -- Cort
-	 */
-	if ( _machine == _MACH_prep )
-	{
-		extern struct card_info snd_installed_cards[];
-		struct card_info *snd_ptr;
-
-		for ( snd_ptr = snd_installed_cards; 
-			snd_ptr < &snd_installed_cards[num_sound_cards];
-			snd_ptr++ )
-		{
-			if ( snd_ptr->card_type == SNDCARD_CS4232 )
-			{
-				if ( _prep_type == _PREP_Motorola )
-				{
-					snd_ptr->config.io_base = 0x830;
-					snd_ptr->config.irq = 10;
-					snd_ptr->config.dma = ppc_cs4232_dma = 6;
-					snd_ptr->config.dma2 = ppc_cs4232_dma2 = 7;
-				}
-				if ( _prep_type == _PREP_IBM )
-				{
-					snd_ptr->config.io_base = 0x530;
-					snd_ptr->config.irq = 5;
-					snd_ptr->config.dma = ppc_cs4232_dma = 1;
-					/* this is wrong - but leave it for now */
-					snd_ptr->config.dma2 = ppc_cs4232_dma2 = 7;
-				}
-			}
-		}
-	}
-#endif /* CONFIG_SOUND_CS4232 */	
-
-	/*print_residual_device_info();*/
-
-	switch (_prep_type) {
-	case _PREP_Motorola:
-		raven_init();
-		break;
-	case _PREP_IBM:
-		ibm_prep_init();
-		break;
-	}
-
-#ifdef CONFIG_VGA_CONSOLE
-	/* remap the VGA memory */
-	vgacon_remap_base = 0xf0000000;
-	/*vgacon_remap_base = ioremap(0xc0000000, 0xba000);*/
-	conswitchp = &vga_con;
-#elif defined(CONFIG_DUMMY_CONSOLE)
-	conswitchp = &dummy_con;
-#endif
-}
-
-/*
- * Determine the decrementer frequency from the residual data
- * This allows for a faster boot as we do not need to calibrate the
- * decrementer against another clock. This is important for embedded systems.
- */
-static int __init
-prep_res_calibrate_decr(void)
-{
-#ifdef CONFIG_PREP_RESIDUAL
-	unsigned long freq, divisor = 4;
-
-	if ( res->VitalProductData.ProcessorBusHz ) {
-		freq = res->VitalProductData.ProcessorBusHz;
-		printk("time_init: decrementer frequency = %lu.%.6lu MHz\n",
-				(freq/divisor)/1000000,
-				(freq/divisor)%1000000);
-		tb_to_us = mulhwu_scale_factor(freq/divisor, 1000000);
-		tb_ticks_per_jiffy = freq / HZ / divisor;
-		return 0;
-	} else
-#endif	
-		return 1;
-}
-
-/*
- * Uses the on-board timer to calibrate the on-chip decrementer register
- * for prep systems.  On the pmac the OF tells us what the frequency is
- * but on prep we have to figure it out.
- * -- Cort
- */
-/* Done with 3 interrupts: the first one primes the cache and the
- * 2 following ones measure the interval. The precision of the method
- * is still doubtful due to the short interval sampled.
- */
-static volatile int calibrate_steps __initdata = 3;
-static unsigned tbstamp __initdata = 0;
-
-static void __init
-prep_calibrate_decr_handler(int irq, void *dev, struct pt_regs *regs)
-{
-	unsigned long t, freq;
-	int step=--calibrate_steps;
-
-	t = get_tbl();
-	if (step > 0) {
-		tbstamp = t;
-	} else {
-		freq = (t - tbstamp)*HZ;
-		printk("time_init: decrementer frequency = %lu.%.6lu MHz\n",
-			 freq/1000000, freq%1000000);
-		tb_ticks_per_jiffy = freq / HZ;
-		tb_to_us = mulhwu_scale_factor(freq, 1000000);
-	}
-}
-
-static void __init
-prep_calibrate_decr(void)
-{
-	int res;
-
-	/* Try and get this from the residual data. */
-	res = prep_res_calibrate_decr();
-
-	/* If we didn't get it from the residual data, try this. */
-	if ( res ) {
-		unsigned long flags;
-
-		save_flags(flags);
-
-#define TIMER0_COUNT 0x40
-#define TIMER_CONTROL 0x43
-		/* set timer to periodic mode */
-		outb_p(0x34,TIMER_CONTROL);/* binary, mode 2, LSB/MSB, ch 0 */
-		/* set the clock to ~100 Hz */
-		outb_p(LATCH & 0xff , TIMER0_COUNT);	/* LSB */
-		outb(LATCH >> 8 , TIMER0_COUNT);	/* MSB */
-
-		if (request_irq(0, prep_calibrate_decr_handler, 0, "timer", NULL) != 0)
-			panic("Could not allocate timer IRQ!");
-		__sti();
-		/* wait for calibrate */
-		while ( calibrate_steps )
-			;
-		restore_flags(flags);
-		free_irq( 0, NULL);
-	}
-}
-
-static long __init
-mk48t59_init(void) {
-	unsigned char tmp;
-
-	tmp = ppc_md.nvram_read_val(MK48T59_RTC_CONTROLB);
-	if (tmp & MK48T59_RTC_CB_STOP) {
-		printk("Warning: RTC was stopped, date will be wrong.\n");
-		ppc_md.nvram_write_val(MK48T59_RTC_CONTROLB, 
-					 tmp & ~MK48T59_RTC_CB_STOP);
-		/* Low frequency crystal oscillators may take a very long
-		 * time to startup and stabilize. For now just ignore the
-		 * the issue, but attempting to calibrate the decrementer
-		 * from the RTC just after this wakeup is likely to be very 
-		 * inaccurate. Firmware should not allow to load
-		 * the OS with the clock stopped anyway...
-		 */
-	}
-	/* Ensure that the clock registers are updated */
-	tmp = ppc_md.nvram_read_val(MK48T59_RTC_CONTROLA);
-	tmp &= ~(MK48T59_RTC_CA_READ | MK48T59_RTC_CA_WRITE);
-	ppc_md.nvram_write_val(MK48T59_RTC_CONTROLA, tmp);
-	return 0;
-}
-
-/* We use the NVRAM RTC to time a second to calibrate the decrementer,
- * the RTC registers have just been set up in the right state by the
- * preceding routine.
- */
-static void __init
-mk48t59_calibrate_decr(void)
-{
-	unsigned long freq;
-	unsigned long t1;
-	unsigned char save_control;
-	long i;
-	unsigned char sec;
- 
-		
-	/* Make sure the time is not stopped. */
-	save_control = ppc_md.nvram_read_val(MK48T59_RTC_CONTROLB);
-	
-	ppc_md.nvram_write_val(MK48T59_RTC_CONTROLA,
-			(save_control & (~MK48T59_RTC_CB_STOP)));
-
-	/* Now make sure the read bit is off so the value will change. */
-	save_control = ppc_md.nvram_read_val(MK48T59_RTC_CONTROLA);
-	save_control &= ~MK48T59_RTC_CA_READ;
-	ppc_md.nvram_write_val(MK48T59_RTC_CONTROLA, save_control);
-
-
-	/* Read the seconds value to see when it changes. */
-	sec = ppc_md.nvram_read_val(MK48T59_RTC_SECONDS);
-	/* Actually this is bad for precision, we should have a loop in
-	 * which we only read the seconds counter. nvram_read_val writes
-	 * the address bytes on every call and this takes a lot of time.
-	 * Perhaps an nvram_wait_change method returning a time
-	 * stamp with a loop count as parameter would be the  solution.
-	 */
-	for (i = 0 ; i < 1000000 ; i++)	{ /* may take up to 1 second... */
-		t1 = get_tbl();
-		if (ppc_md.nvram_read_val(MK48T59_RTC_SECONDS) != sec) {
-			break;
-		}
-	}
-
-	sec = ppc_md.nvram_read_val(MK48T59_RTC_SECONDS);
-	for (i = 0 ; i < 1000000 ; i++)	{ /* Should take up 1 second... */
-		freq = get_tbl()-t1;
-		if (ppc_md.nvram_read_val(MK48T59_RTC_SECONDS) != sec)
-			break;
-	}
-
-	printk("time_init: decrementer frequency = %lu.%.6lu MHz\n",
-		 freq/1000000, freq%1000000);
-	tb_ticks_per_jiffy = freq / HZ;
-	tb_to_us = mulhwu_scale_factor(freq, 1000000);
-}
-
-static void __prep
-prep_restart(char *cmd)
-{
-	unsigned long i = 10000;
-
-	__cli();
-
-	/* set exception prefix high - to the prom */
-	_nmask_and_or_msr(0, MSR_IP);
-
-	/* make sure bit 0 (reset) is a 0 */
-	outb( inb(0x92) & ~1L , 0x92 );
-	/* signal a reset to system control port A - soft reset */
-	outb( inb(0x92) | 1 , 0x92 );
-
-	while ( i != 0 ) i++;
-	panic("restart failed\n");
-}
-
-static void __prep
-prep_halt(void)
-{
-	unsigned long flags;
-	__cli();
-	/* set exception prefix high - to the prom */
-	save_flags( flags );
-	restore_flags( flags|MSR_IP );
-
-	/* make sure bit 0 (reset) is a 0 */
-	outb( inb(0x92) & ~1L , 0x92 );
-	/* signal a reset to system control port A - soft reset */
-	outb( inb(0x92) | 1 , 0x92 );
-
-	while ( 1 ) ;
-	/*
-	 * Not reached
-	 */
-}
-
-/*
- * On IBM PReP's, power management is handled by a Signetics 87c750 behind the
- * Utah component on the ISA bus. To access the 750 you must write a series of
- * nibbles to port 0x82a (decoded by the Utah). This is described somewhat in
- * the IBM Carolina Technical Specification.
- * -Hollis
- */
-static void __prep
-utah_sig87c750_setbit(unsigned int bytenum, unsigned int bitnum, int value)
-{
-	/*
-	 * byte1: 0 0 0 1 0  d  a5 a4
-	 * byte2: 0 0 0 1 a3 a2 a1 a0
-	 *
-	 * d = the bit's value, enabled or disabled
-	 * (a5 a4 a3) = the byte number, minus 20
-	 * (a2 a1 a0) = the bit number
-	 *
-	 * example: set the 5th bit of byte 21 (21.5)
-	 *     a5 a4 a3 = 001 (byte 1)
-	 *     a2 a1 a0 = 101 (bit 5)
-	 *
-	 *     byte1 = 0001 0100 (0x14)
-	 *     byte2 = 0001 1101 (0x1d)
-	 */
-	unsigned char byte1=0x10, byte2=0x10;
-	const unsigned int pm_reg_1=0x82a; /* ISA address */
-
-	/* the 750's '20.0' is accessed as '0.0' through Utah (which adds 20) */
-	bytenum -= 20;
-
-	byte1 |= (!!value) << 2;		/* set d */
-	byte1 |= (bytenum >> 1) & 0x3;	/* set a5, a4 */
-
-	byte2 |= (bytenum & 0x1) << 3;	/* set a3 */
-	byte2 |= bitnum & 0x7;			/* set a2, a1, a0 */
-
-	outb(byte1, pm_reg_1);		/* first nibble */
-	mb();
-	udelay(100);				/* important: let controller recover */
-
-	outb(byte2, pm_reg_1);		/* second nibble */
-	mb();
-	udelay(100);				/* important: let controller recover */
-}
-
-static void __prep
-prep_power_off(void)
-{
-	if ( _prep_type == _PREP_IBM) {
-		/* tested on:
-		 * 		Carolina's: 7248-43P, 6070 (PowerSeries 850)
-		 * should work on:
-		 * 		Carolina: 6050 (PowerSeries 830)
-		 * 		7043-140 (Tiger 1)
-		 */
-		unsigned long flags;
-		__cli();
-		/* set exception prefix high - to the prom */
-		save_flags( flags );
-		restore_flags( flags|MSR_IP );
-
-		utah_sig87c750_setbit(21, 5, 1); /* set bit 21.5, "PMEXEC_OFF" */
-
-		while ( 1 ) ;
-		/* not reached */
-	} else {
-		prep_halt();
-	}
-}
-
-static unsigned int __prep
-prep_irq_cannonicalize(u_int irq)
-{
-	if (irq == 2)
-	{
-		return 9;
-	}
-	else
-	{
-		return irq;
-	}
-}
-
-static int __prep
-prep_get_irq(struct pt_regs *regs)
-{
-	return i8259_irq();
-}		
-
-static void __init
-prep_init_IRQ(void)
-{
-	int i;
-
-	if (OpenPIC_Addr != NULL)
-		openpic_init(1, NUM_8259_INTERRUPTS, 0, -1);
-	for ( i = 0 ; i < NUM_8259_INTERRUPTS ; i++ )
-		irq_desc[i].handler = &i8259_pic;
-	i8259_init(0xbffffff0); /* PCI interrupt ack address for MPC105 and 106 */
-}
-
-#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
-/*
- * IDE stuff.
- */
-static int __prep
-prep_ide_default_irq(ide_ioreg_t base)
-{
-	switch (base) {
-		case 0x1f0: return 13;
-		case 0x170: return 13;
-		case 0x1e8: return 11;
-		case 0x168: return 10;
-		case 0xfff0: return 14;		/* MCP(N)750 ide0 */
-		case 0xffe0: return 15;		/* MCP(N)750 ide1 */
-		default: return 0;
-	}
-}
-
-static ide_ioreg_t __prep
-prep_ide_default_io_base(int index)
-{
-	switch (index) {
-		case 0: return 0x1f0;
-		case 1: return 0x170;
-		case 2: return 0x1e8;
-		case 3: return 0x168;
-		default:
-			return 0;
-	}
-}
-
-static int __prep
-prep_ide_check_region(ide_ioreg_t from, unsigned int extent)
-{
-	return check_region(from, extent);
-}
-
-static void __prep
-prep_ide_request_region(ide_ioreg_t from,
-			unsigned int extent,
-			const char *name)
-{
-	request_region(from, extent, name);
-}
-
-static void __prep
-prep_ide_release_region(ide_ioreg_t from,
-			unsigned int extent)
-{
-	release_region(from, extent);
-}
-
-static void __init
-prep_ide_init_hwif_ports (hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq)
-{
-	ide_ioreg_t reg = data_port;
-	int i;
-
-	for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
-		hw->io_ports[i] = reg;
-		reg += 1;
-	}
-	if (ctrl_port) {
-		hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
-	} else {
-		hw->io_ports[IDE_CONTROL_OFFSET] = hw->io_ports[IDE_DATA_OFFSET] + 0x206;
-	}
-	if (irq != NULL)
-		*irq = 0;
-}
-#endif
-
-#ifdef CONFIG_SMP
-/* PReP (MTX) support */
-static int __init
-smp_prep_probe(void)
-{
-	extern int mot_multi;
-
-	if (mot_multi) {
-		openpic_request_IPIs();
-		smp_hw_index[1] = 1;
-		return 2;
-	}
-
-	return 1;
-}
-
-static void __init
-smp_prep_kick_cpu(int nr)
-{
-	*(unsigned long *)KERNELBASE = nr;
-	asm volatile("dcbf 0,%0"::"r"(KERNELBASE):"memory");
-	printk("CPU1 reset, waiting\n");
-}
-
-static void __init
-smp_prep_setup_cpu(int cpu_nr)
-{
-	if (OpenPIC_Addr)
-		do_openpic_setup_cpu();
-}
-
-static struct smp_ops_t prep_smp_ops __prepdata = {
-	smp_openpic_message_pass,
-	smp_prep_probe,
-	smp_prep_kick_cpu,
-	smp_prep_setup_cpu,
-};
-#endif /* CONFIG_SMP */
-
-/*
- * This finds the amount of physical ram and does necessary
- * setup for prep.  This is pretty architecture specific so
- * this will likely stay separate from the pmac.
- * -- Cort
- */
-static unsigned long __init
-prep_find_end_of_memory(void)
-{
-	unsigned long total = 0;
-	extern unsigned int boot_mem_size;
-
-#ifdef CONFIG_PREP_RESIDUAL	
-	total = res->TotalMemory;
-#endif	
-
-	if (total == 0 && boot_mem_size != 0)
-		total = boot_mem_size;
-	else if (total == 0) {
-		/*
-		 * I need a way to probe the amount of memory if the residual
-		 * data doesn't contain it. -- Cort
-		 */
-		total = 0x02000000;
-		printk(KERN_INFO "Ramsize from residual data was 0"
-			 " -- defaulting to %ldM\n", total>>20);
-	}
-
-	return (total);
-}
-
-/*
- * Setup the bat mappings we're going to load that cover
- * the io areas.  RAM was mapped by mapin_ram().
- * -- Cort
- */
-static void __init
-prep_map_io(void)
-{
-	io_block_mapping(0x80000000, PREP_ISA_IO_BASE, 0x10000000, _PAGE_IO);
-	io_block_mapping(0xf0000000, PREP_ISA_MEM_BASE, 0x08000000, _PAGE_IO);
-}
-
-static void __init
-prep_init2(void)
-{
-#ifdef CONFIG_NVRAM
-	request_region(PREP_NVRAM_AS0, 0x8, "nvram");
-#endif
-	request_region(0x20,0x20,"pic1");
-	request_region(0xa0,0x20,"pic2");
-	request_region(0x00,0x20,"dma1");
-	request_region(0x40,0x20,"timer");
-	request_region(0x80,0x10,"dma page reg");
-	request_region(0xc0,0x20,"dma2");
-}
-
-void __init
-prep_init(unsigned long r3, unsigned long r4, unsigned long r5,
-		unsigned long r6, unsigned long r7)
-{
-#ifdef CONFIG_PREP_RESIDUAL	
-	/* make a copy of residual data */
-	if ( r3 ) {
-		memcpy((void *)res,(void *)(r3+KERNELBASE),
-			 sizeof(RESIDUAL));
-	}
-#endif
-
-	isa_io_base = PREP_ISA_IO_BASE;
-	isa_mem_base = PREP_ISA_MEM_BASE;
-	pci_dram_offset = PREP_PCI_DRAM_OFFSET;
-	ISA_DMA_THRESHOLD = 0x00ffffff;
-	DMA_MODE_READ = 0x44;
-	DMA_MODE_WRITE = 0x48;
-
-	/* figure out what kind of prep workstation we are */
-#ifdef CONFIG_PREP_RESIDUAL	
-	if ( res->ResidualLength != 0 )
-	{
-		if ( !strncmp(res->VitalProductData.PrintableModel,"IBM",3) )
-			_prep_type = _PREP_IBM;
-		else
-			_prep_type = _PREP_Motorola;
-	}
-	else /* assume motorola if no residual (netboot?) */
-#endif
-	{
-		_prep_type = _PREP_Motorola;
-	}
-
-	ppc_md.setup_arch     = prep_setup_arch;
-	ppc_md.show_percpuinfo = prep_show_percpuinfo;
-	ppc_md.show_cpuinfo   = prep_show_cpuinfo;
-	ppc_md.irq_cannonicalize = prep_irq_cannonicalize;
-	ppc_md.init_IRQ       = prep_init_IRQ;
-	/* this gets changed later on if we have an OpenPIC -- Cort */
-	ppc_md.get_irq        = prep_get_irq;
-	ppc_md.init           = prep_init2;
-
-	ppc_md.restart        = prep_restart;
-	ppc_md.power_off      = prep_power_off;
-	ppc_md.halt           = prep_halt;
-
-	ppc_md.nvram_read_val = prep_nvram_read_val;
-	ppc_md.nvram_write_val = prep_nvram_write_val;
-
-	ppc_md.time_init      = NULL;
-	if (_prep_type == _PREP_IBM) {
-		ppc_md.set_rtc_time   = mc146818_set_rtc_time;
-		ppc_md.get_rtc_time   = mc146818_get_rtc_time;
-		ppc_md.calibrate_decr = prep_calibrate_decr;
-	} else {
-		ppc_md.set_rtc_time   = mk48t59_set_rtc_time;
-		ppc_md.get_rtc_time   = mk48t59_get_rtc_time;
-		ppc_md.calibrate_decr = mk48t59_calibrate_decr;
-		ppc_md.time_init      = mk48t59_init;
-	}
-
-	ppc_md.find_end_of_memory = prep_find_end_of_memory;
-	ppc_md.setup_io_mappings = prep_map_io;
-
-#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
-	ppc_ide_md.default_irq = prep_ide_default_irq;
-	ppc_ide_md.default_io_base = prep_ide_default_io_base;
-	ppc_ide_md.ide_check_region = prep_ide_check_region;
-	ppc_ide_md.ide_request_region = prep_ide_request_region;
-	ppc_ide_md.ide_release_region = prep_ide_release_region;
-	ppc_ide_md.ide_init_hwif = prep_ide_init_hwif_ports;
-#endif
-
-#ifdef CONFIG_VT
-	ppc_md.kbd_setkeycode    = pckbd_setkeycode;
-	ppc_md.kbd_getkeycode    = pckbd_getkeycode;
-	ppc_md.kbd_translate     = pckbd_translate;
-	ppc_md.kbd_unexpected_up = pckbd_unexpected_up;
-	ppc_md.kbd_leds          = pckbd_leds;
-	ppc_md.kbd_init_hw       = pckbd_init_hw;
-#ifdef CONFIG_MAGIC_SYSRQ
-	ppc_md.ppc_kbd_sysrq_xlate	 = pckbd_sysrq_xlate;
-	SYSRQ_KEY = 0x54;
-#endif
-#endif
-
-#ifdef CONFIG_SMP
-	ppc_md.smp_ops		 = &prep_smp_ops;
-#endif /* CONFIG_SMP */
-}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)