[mirror_ubuntu-disco-kernel.git] / arch / m68k / kernel / setup.c

/*
 *  linux/arch/m68k/kernel/setup.c
 *
 *  Copyright (C) 1995  Hamish Macdonald
 */

/*
 * This file handles the architecture-dependent parts of system setup
 */

#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fs.h>
#include <linux/console.h>
#include <linux/genhd.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/seq_file.h>
#include <linux/module.h>
#include <linux/initrd.h>

#include <asm/bootinfo.h>
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/machdep.h>
#ifdef CONFIG_AMIGA
#include <asm/amigahw.h>
#endif
#ifdef CONFIG_ATARI
#include <asm/atarihw.h>
#include <asm/atari_stram.h>
#endif
#ifdef CONFIG_SUN3X
#include <asm/dvma.h>
#endif

unsigned long m68k_machtype;
unsigned long m68k_cputype;
EXPORT_SYMBOL(m68k_machtype);
EXPORT_SYMBOL(m68k_cputype);
unsigned long m68k_fputype;
unsigned long m68k_mmutype;
#ifdef CONFIG_VME
unsigned long vme_brdtype;
EXPORT_SYMBOL(vme_brdtype);
#endif

int m68k_is040or060;
EXPORT_SYMBOL(m68k_is040or060);

extern int end;
extern unsigned long availmem;

int m68k_num_memory;
int m68k_realnum_memory;
EXPORT_SYMBOL(m68k_realnum_memory);
#ifdef CONFIG_SINGLE_MEMORY_CHUNK
unsigned long m68k_memoffset;
EXPORT_SYMBOL(m68k_memoffset);
#endif
struct mem_info m68k_memory[NUM_MEMINFO];
EXPORT_SYMBOL(m68k_memory);

static struct mem_info m68k_ramdisk;

static char m68k_command_line[CL_SIZE];

void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
/* machine dependent irq functions */
void (*mach_init_IRQ) (void) __initdata = NULL;
void (*mach_get_model) (char *model);
int (*mach_get_hardware_list) (char *buffer);
/* machine dependent timer functions */
unsigned long (*mach_gettimeoffset) (void);
int (*mach_hwclk) (int, struct rtc_time*);
EXPORT_SYMBOL(mach_hwclk);
int (*mach_set_clock_mmss) (unsigned long);
unsigned int (*mach_get_ss)(void);
int (*mach_get_rtc_pll)(struct rtc_pll_info *);
int (*mach_set_rtc_pll)(struct rtc_pll_info *);
EXPORT_SYMBOL(mach_get_ss);
EXPORT_SYMBOL(mach_get_rtc_pll);
EXPORT_SYMBOL(mach_set_rtc_pll);
void (*mach_reset)( void );
void (*mach_halt)( void );
void (*mach_power_off)( void );
long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */
#ifdef CONFIG_HEARTBEAT
void (*mach_heartbeat) (int);
EXPORT_SYMBOL(mach_heartbeat);
#endif
#ifdef CONFIG_M68K_L2_CACHE
void (*mach_l2_flush) (int);
#endif
#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
void (*mach_beep)(unsigned int, unsigned int);
EXPORT_SYMBOL(mach_beep);
#endif
#if defined(CONFIG_ISA) && defined(MULTI_ISA)
int isa_type;
int isa_sex;
EXPORT_SYMBOL(isa_type);
EXPORT_SYMBOL(isa_sex);
#endif

extern int amiga_parse_bootinfo(const struct bi_record *);
extern int atari_parse_bootinfo(const struct bi_record *);
extern int mac_parse_bootinfo(const struct bi_record *);
extern int q40_parse_bootinfo(const struct bi_record *);
extern int bvme6000_parse_bootinfo(const struct bi_record *);
extern int mvme16x_parse_bootinfo(const struct bi_record *);
extern int mvme147_parse_bootinfo(const struct bi_record *);
extern int hp300_parse_bootinfo(const struct bi_record *);

extern void config_amiga(void);
extern void config_atari(void);
extern void config_mac(void);
extern void config_sun3(void);
extern void config_apollo(void);
extern void config_mvme147(void);
extern void config_mvme16x(void);
extern void config_bvme6000(void);
extern void config_hp300(void);
extern void config_q40(void);
extern void config_sun3x(void);

#define MASK_256K 0xfffc0000

extern void paging_init(void);

static void __init m68k_parse_bootinfo(const struct bi_record *record)
{
	while (record->tag != BI_LAST) {
		int unknown = 0;
		const unsigned long *data = record->data;

		switch (record->tag) {
		case BI_MACHTYPE:
		case BI_CPUTYPE:
		case BI_FPUTYPE:
		case BI_MMUTYPE:
			/* Already set up by head.S */
			break;

		case BI_MEMCHUNK:
			if (m68k_num_memory < NUM_MEMINFO) {
				m68k_memory[m68k_num_memory].addr = data[0];
				m68k_memory[m68k_num_memory].size = data[1];
				m68k_num_memory++;
			} else
				printk("m68k_parse_bootinfo: too many memory chunks\n");
			break;

		case BI_RAMDISK:
			m68k_ramdisk.addr = data[0];
			m68k_ramdisk.size = data[1];
			break;

		case BI_COMMAND_LINE:
			strlcpy(m68k_command_line, (const char *)data,
				sizeof(m68k_command_line));
			break;

		default:
			if (MACH_IS_AMIGA)
				unknown = amiga_parse_bootinfo(record);
			else if (MACH_IS_ATARI)
				unknown = atari_parse_bootinfo(record);
			else if (MACH_IS_MAC)
				unknown = mac_parse_bootinfo(record);
			else if (MACH_IS_Q40)
				unknown = q40_parse_bootinfo(record);
			else if (MACH_IS_BVME6000)
				unknown = bvme6000_parse_bootinfo(record);
			else if (MACH_IS_MVME16x)
				unknown = mvme16x_parse_bootinfo(record);
			else if (MACH_IS_MVME147)
				unknown = mvme147_parse_bootinfo(record);
			else if (MACH_IS_HP300)
				unknown = hp300_parse_bootinfo(record);
			else
				unknown = 1;
		}
		if (unknown)
			printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n",
			       record->tag);
		record = (struct bi_record *)((unsigned long)record +
					      record->size);
	}

	m68k_realnum_memory = m68k_num_memory;
#ifdef CONFIG_SINGLE_MEMORY_CHUNK
	if (m68k_num_memory > 1) {
		printk("Ignoring last %i chunks of physical memory\n",
		       (m68k_num_memory - 1));
		m68k_num_memory = 1;
	}
	m68k_memoffset = m68k_memory[0].addr-PAGE_OFFSET;
#endif
}

void __init setup_arch(char **cmdline_p)
{
	extern int _etext, _edata, _end;
#ifndef CONFIG_SUN3
	unsigned long endmem, startmem;
#endif
	int i;

	/* The bootinfo is located right after the kernel bss */
	m68k_parse_bootinfo((const struct bi_record *)&_end);

	if (CPU_IS_040)
		m68k_is040or060 = 4;
	else if (CPU_IS_060)
		m68k_is040or060 = 6;

	/* FIXME: m68k_fputype is passed in by Penguin booter, which can
	 * be confused by software FPU emulation. BEWARE.
	 * We should really do our own FPU check at startup.
	 * [what do we do with buggy 68LC040s? if we have problems
	 *  with them, we should add a test to check_bugs() below] */
#ifndef CONFIG_M68KFPU_EMU_ONLY
	/* clear the fpu if we have one */
	if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) {
		volatile int zero = 0;
		asm volatile ("frestore %0" : : "m" (zero));
	}
#endif

	if (CPU_IS_060) {
		u32 pcr;

		asm (".chip 68060; movec %%pcr,%0; .chip 68k"
		     : "=d" (pcr));
		if (((pcr >> 8) & 0xff) <= 5) {
			printk("Enabling workaround for errata I14\n");
			asm (".chip 68060; movec %0,%%pcr; .chip 68k"
			     : : "d" (pcr | 0x20));
		}
	}

	init_mm.start_code = PAGE_OFFSET;
	init_mm.end_code = (unsigned long) &_etext;
	init_mm.end_data = (unsigned long) &_edata;
	init_mm.brk = (unsigned long) &_end;

	*cmdline_p = m68k_command_line;
	memcpy(boot_command_line, *cmdline_p, CL_SIZE);

	parse_early_param();

#ifdef CONFIG_DUMMY_CONSOLE
	conswitchp = &dummy_con;
#endif

	switch (m68k_machtype) {
#ifdef CONFIG_AMIGA
	case MACH_AMIGA:
		config_amiga();
		break;
#endif
#ifdef CONFIG_ATARI
	case MACH_ATARI:
		config_atari();
		break;
#endif
#ifdef CONFIG_MAC
	case MACH_MAC:
		config_mac();
		break;
#endif
#ifdef CONFIG_SUN3
	case MACH_SUN3:
		config_sun3();
		break;
#endif
#ifdef CONFIG_APOLLO
	case MACH_APOLLO:
		config_apollo();
		break;
#endif
#ifdef CONFIG_MVME147
	case MACH_MVME147:
		config_mvme147();
		break;
#endif
#ifdef CONFIG_MVME16x
	case MACH_MVME16x:
		config_mvme16x();
		break;
#endif
#ifdef CONFIG_BVME6000
	case MACH_BVME6000:
		config_bvme6000();
		break;
#endif
#ifdef CONFIG_HP300
	case MACH_HP300:
		config_hp300();
		break;
#endif
#ifdef CONFIG_Q40
	case MACH_Q40:
		config_q40();
		break;
#endif
#ifdef CONFIG_SUN3X
	case MACH_SUN3X:
		config_sun3x();
		break;
#endif
	default:
		panic("No configuration setup");
	}

#ifndef CONFIG_SUN3
	startmem= m68k_memory[0].addr;
	endmem = startmem + m68k_memory[0].size;
	high_memory = (void *)PAGE_OFFSET;
	for (i = 0; i < m68k_num_memory; i++) {
		m68k_memory[i].size &= MASK_256K;
		if (m68k_memory[i].addr < startmem)
			startmem = m68k_memory[i].addr;
		if (m68k_memory[i].addr+m68k_memory[i].size > endmem)
			endmem = m68k_memory[i].addr+m68k_memory[i].size;
		high_memory += m68k_memory[i].size;
	}

	availmem += init_bootmem_node(NODE_DATA(0), availmem >> PAGE_SHIFT,
				      startmem >> PAGE_SHIFT, endmem >> PAGE_SHIFT);

	for (i = 0; i < m68k_num_memory; i++)
		free_bootmem(m68k_memory[i].addr, m68k_memory[i].size);

	reserve_bootmem(m68k_memory[0].addr, availmem - m68k_memory[0].addr);

#ifdef CONFIG_BLK_DEV_INITRD
	if (m68k_ramdisk.size) {
		reserve_bootmem(m68k_ramdisk.addr, m68k_ramdisk.size);
		initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
		initrd_end = initrd_start + m68k_ramdisk.size;
		printk("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
	}
#endif

#ifdef CONFIG_ATARI
	if (MACH_IS_ATARI)
		atari_stram_reserve_pages((void *)availmem);
#endif
#ifdef CONFIG_SUN3X
	if (MACH_IS_SUN3X) {
		dvma_init();
	}
#endif

#endif /* !CONFIG_SUN3 */

	paging_init();

/* set ISA defs early as possible */
#if defined(CONFIG_ISA) && defined(MULTI_ISA)
#if defined(CONFIG_Q40)
	if (MACH_IS_Q40) {
		isa_type = Q40_ISA;
		isa_sex = 0;
	}
#elif defined(CONFIG_GG2)
	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(GG2_ISA)) {
		isa_type = GG2_ISA;
		isa_sex = 0;
	}
#elif defined(CONFIG_AMIGA_PCMCIA)
	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
		isa_type = AG_ISA;
		isa_sex = 1;
	}
#endif
#endif
}

static int show_cpuinfo(struct seq_file *m, void *v)
{
	const char *cpu, *mmu, *fpu;
	unsigned long clockfreq, clockfactor;

#define LOOP_CYCLES_68020	(8)
#define LOOP_CYCLES_68030	(8)
#define LOOP_CYCLES_68040	(3)
#define LOOP_CYCLES_68060	(1)

	if (CPU_IS_020) {
		cpu = "68020";
		clockfactor = LOOP_CYCLES_68020;
	} else if (CPU_IS_030) {
		cpu = "68030";
		clockfactor = LOOP_CYCLES_68030;
	} else if (CPU_IS_040) {
		cpu = "68040";
		clockfactor = LOOP_CYCLES_68040;
	} else if (CPU_IS_060) {
		cpu = "68060";
		clockfactor = LOOP_CYCLES_68060;
	} else {
		cpu = "680x0";
		clockfactor = 0;
	}

#ifdef CONFIG_M68KFPU_EMU_ONLY
	fpu = "none(soft float)";
#else
	if (m68k_fputype & FPU_68881)
		fpu = "68881";
	else if (m68k_fputype & FPU_68882)
		fpu = "68882";
	else if (m68k_fputype & FPU_68040)
		fpu = "68040";
	else if (m68k_fputype & FPU_68060)
		fpu = "68060";
	else if (m68k_fputype & FPU_SUNFPA)
		fpu = "Sun FPA";
	else
		fpu = "none";
#endif

	if (m68k_mmutype & MMU_68851)
		mmu = "68851";
	else if (m68k_mmutype & MMU_68030)
		mmu = "68030";
	else if (m68k_mmutype & MMU_68040)
		mmu = "68040";
	else if (m68k_mmutype & MMU_68060)
		mmu = "68060";
	else if (m68k_mmutype & MMU_SUN3)
		mmu = "Sun-3";
	else if (m68k_mmutype & MMU_APOLLO)
		mmu = "Apollo";
	else
		mmu = "unknown";

	clockfreq = loops_per_jiffy * HZ * clockfactor;

	seq_printf(m, "CPU:\t\t%s\n"
		   "MMU:\t\t%s\n"
		   "FPU:\t\t%s\n"
		   "Clocking:\t%lu.%1luMHz\n"
		   "BogoMips:\t%lu.%02lu\n"
		   "Calibration:\t%lu loops\n",
		   cpu, mmu, fpu,
		   clockfreq/1000000,(clockfreq/100000)%10,
		   loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
		   loops_per_jiffy);
	return 0;
}

static void *c_start(struct seq_file *m, loff_t *pos)
{
	return *pos < 1 ? (void *)1 : NULL;
}
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
{
	++*pos;
	return NULL;
}
static void c_stop(struct seq_file *m, void *v)
{
}
struct seq_operations cpuinfo_op = {
	.start	= c_start,
	.next	= c_next,
	.stop	= c_stop,
	.show	= show_cpuinfo,
};

int get_hardware_list(char *buffer)
{
	int len = 0;
	char model[80];
	unsigned long mem;
	int i;

	if (mach_get_model)
		mach_get_model(model);
	else
		strcpy(model, "Unknown m68k");

	len += sprintf(buffer + len, "Model:\t\t%s\n", model);
	for (mem = 0, i = 0; i < m68k_num_memory; i++)
		mem += m68k_memory[i].size;
	len += sprintf(buffer + len, "System Memory:\t%ldK\n", mem >> 10);

	if (mach_get_hardware_list)
		len += mach_get_hardware_list(buffer + len);

	return len;
}

void check_bugs(void)
{
#ifndef CONFIG_M68KFPU_EMU
	if (m68k_fputype == 0) {
		printk(KERN_EMERG "*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
			"WHICH IS REQUIRED BY LINUX/M68K ***\n");
		printk(KERN_EMERG "Upgrade your hardware or join the FPU "
			"emulation project\n");
		panic("no FPU");
	}
#endif /* !CONFIG_M68KFPU_EMU */
}

#ifdef CONFIG_ADB
static int __init adb_probe_sync_enable (char *str) {
	extern int __adb_probe_sync;
	__adb_probe_sync = 1;
	return 1;
}

__setup("adb_sync", adb_probe_sync_enable);
#endif /* CONFIG_ADB */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/arch/m68k/kernel/setup.c
	3	*
	4	* Copyright (C) 1995 Hamish Macdonald
	5	*/
	6
	7	/*
	8	* This file handles the architecture-dependent parts of system setup
	9	*/
	10
1da177e4 LT	11	#include <linux/kernel.h>
	12	#include <linux/mm.h>
	13	#include <linux/sched.h>
	14	#include <linux/delay.h>
	15	#include <linux/interrupt.h>
	16	#include <linux/fs.h>
	17	#include <linux/console.h>
	18	#include <linux/genhd.h>
	19	#include <linux/errno.h>
	20	#include <linux/string.h>
	21	#include <linux/init.h>
	22	#include <linux/bootmem.h>
	23	#include <linux/seq_file.h>
	24	#include <linux/module.h>
	25	#include <linux/initrd.h>
	26
	27	#include <asm/bootinfo.h>
	28	#include <asm/setup.h>
	29	#include <asm/irq.h>
	30	#include <asm/io.h>
	31	#include <asm/machdep.h>
	32	#ifdef CONFIG_AMIGA
	33	#include <asm/amigahw.h>
	34	#endif
	35	#ifdef CONFIG_ATARI
	36	#include <asm/atarihw.h>
	37	#include <asm/atari_stram.h>
	38	#endif
	39	#ifdef CONFIG_SUN3X
	40	#include <asm/dvma.h>
	41	#endif
	42
	43	unsigned long m68k_machtype;
	44	unsigned long m68k_cputype;
2e811488 AV	45	EXPORT_SYMBOL(m68k_machtype);
2e811488 AV	46	EXPORT_SYMBOL(m68k_cputype);
1da177e4 LT	47	unsigned long m68k_fputype;
	48	unsigned long m68k_mmutype;
	49	#ifdef CONFIG_VME
	50	unsigned long vme_brdtype;
2e811488	51	EXPORT_SYMBOL(vme_brdtype);
1da177e4 LT	52	#endif
	53
	54	int m68k_is040or060;
2e811488	55	EXPORT_SYMBOL(m68k_is040or060);
1da177e4 LT	56
	57	extern int end;
	58	extern unsigned long availmem;
	59
	60	int m68k_num_memory;
	61	int m68k_realnum_memory;
2e811488 AV	62	EXPORT_SYMBOL(m68k_realnum_memory);
2e811488 AV	63	#ifdef CONFIG_SINGLE_MEMORY_CHUNK
1da177e4	64	unsigned long m68k_memoffset;
2e811488 AV	65	EXPORT_SYMBOL(m68k_memoffset);
2e811488 AV	66	#endif
1da177e4	67	struct mem_info m68k_memory[NUM_MEMINFO];
2e811488	68	EXPORT_SYMBOL(m68k_memory);
1da177e4 LT	69
	70	static struct mem_info m68k_ramdisk;
	71
	72	static char m68k_command_line[CL_SIZE];
	73
40220c1a	74	void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
1da177e4 LT	75	/* machine dependent irq functions */
1da177e4 LT	76	void (*mach_init_IRQ) (void) __initdata = NULL;
1da177e4 LT	77	void (mach_get_model) (char model);
1da177e4 LT	78	int (mach_get_hardware_list) (char buffer);
1da177e4 LT	79	/* machine dependent timer functions */
	80	unsigned long (*mach_gettimeoffset) (void);
	81	int (mach_hwclk) (int, struct rtc_time);
2e811488	82	EXPORT_SYMBOL(mach_hwclk);
1da177e4 LT	83	int (*mach_set_clock_mmss) (unsigned long);
	84	unsigned int (*mach_get_ss)(void);
	85	int (mach_get_rtc_pll)(struct rtc_pll_info );
	86	int (mach_set_rtc_pll)(struct rtc_pll_info );
2e811488 AV	87	EXPORT_SYMBOL(mach_get_ss);
	88	EXPORT_SYMBOL(mach_get_rtc_pll);
	89	EXPORT_SYMBOL(mach_set_rtc_pll);
1da177e4 LT	90	void (*mach_reset)( void );
	91	void (*mach_halt)( void );
	92	void (*mach_power_off)( void );
	93	long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */
1da177e4 LT	94	#ifdef CONFIG_HEARTBEAT
	95	void (*mach_heartbeat) (int);
	96	EXPORT_SYMBOL(mach_heartbeat);
	97	#endif
	98	#ifdef CONFIG_M68K_L2_CACHE
	99	void (*mach_l2_flush) (int);
	100	#endif
	101	#if defined(CONFIG_INPUT_M68K_BEEP) \|\| defined(CONFIG_INPUT_M68K_BEEP_MODULE)
	102	void (*mach_beep)(unsigned int, unsigned int);
2e811488	103	EXPORT_SYMBOL(mach_beep);
1da177e4 LT	104	#endif
	105	#if defined(CONFIG_ISA) && defined(MULTI_ISA)
	106	int isa_type;
	107	int isa_sex;
aa7e02fe AV	108	EXPORT_SYMBOL(isa_type);
aa7e02fe AV	109	EXPORT_SYMBOL(isa_sex);
1da177e4 LT	110	#endif
	111
	112	extern int amiga_parse_bootinfo(const struct bi_record *);
	113	extern int atari_parse_bootinfo(const struct bi_record *);
	114	extern int mac_parse_bootinfo(const struct bi_record *);
	115	extern int q40_parse_bootinfo(const struct bi_record *);
	116	extern int bvme6000_parse_bootinfo(const struct bi_record *);
	117	extern int mvme16x_parse_bootinfo(const struct bi_record *);
	118	extern int mvme147_parse_bootinfo(const struct bi_record *);
	119	extern int hp300_parse_bootinfo(const struct bi_record *);
	120
	121	extern void config_amiga(void);
	122	extern void config_atari(void);
	123	extern void config_mac(void);
	124	extern void config_sun3(void);
	125	extern void config_apollo(void);
	126	extern void config_mvme147(void);
	127	extern void config_mvme16x(void);
	128	extern void config_bvme6000(void);
	129	extern void config_hp300(void);
	130	extern void config_q40(void);
	131	extern void config_sun3x(void);
	132
1da177e4 LT	133	#define MASK_256K 0xfffc0000
	134
	135	extern void paging_init(void);
	136
	137	static void __init m68k_parse_bootinfo(const struct bi_record *record)
	138	{
6ff5801a RZ	139	while (record->tag != BI_LAST) {
	140	int unknown = 0;
	141	const unsigned long *data = record->data;
	142
	143	switch (record->tag) {
	144	case BI_MACHTYPE:
	145	case BI_CPUTYPE:
	146	case BI_FPUTYPE:
	147	case BI_MMUTYPE:
	148	/* Already set up by head.S */
	149	break;
	150
	151	case BI_MEMCHUNK:
	152	if (m68k_num_memory < NUM_MEMINFO) {
	153	m68k_memory[m68k_num_memory].addr = data[0];
	154	m68k_memory[m68k_num_memory].size = data[1];
	155	m68k_num_memory++;
	156	} else
	157	printk("m68k_parse_bootinfo: too many memory chunks\n");
	158	break;
	159
	160	case BI_RAMDISK:
	161	m68k_ramdisk.addr = data[0];
	162	m68k_ramdisk.size = data[1];
	163	break;
	164
	165	case BI_COMMAND_LINE:
	166	strlcpy(m68k_command_line, (const char *)data,
	167	sizeof(m68k_command_line));
	168	break;
	169
	170	default:
	171	if (MACH_IS_AMIGA)
	172	unknown = amiga_parse_bootinfo(record);
	173	else if (MACH_IS_ATARI)
	174	unknown = atari_parse_bootinfo(record);
	175	else if (MACH_IS_MAC)
	176	unknown = mac_parse_bootinfo(record);
	177	else if (MACH_IS_Q40)
	178	unknown = q40_parse_bootinfo(record);
	179	else if (MACH_IS_BVME6000)
	180	unknown = bvme6000_parse_bootinfo(record);
	181	else if (MACH_IS_MVME16x)
	182	unknown = mvme16x_parse_bootinfo(record);
	183	else if (MACH_IS_MVME147)
	184	unknown = mvme147_parse_bootinfo(record);
	185	else if (MACH_IS_HP300)
	186	unknown = hp300_parse_bootinfo(record);
	187	else
	188	unknown = 1;
	189	}
	190	if (unknown)
	191	printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n",
	192	record->tag);
	193	record = (struct bi_record *)((unsigned long)record +
	194	record->size);
1da177e4	195	}
1da177e4	196
6ff5801a	197	m68k_realnum_memory = m68k_num_memory;
1da177e4	198	#ifdef CONFIG_SINGLE_MEMORY_CHUNK
6ff5801a RZ	199	if (m68k_num_memory > 1) {
	200	printk("Ignoring last %i chunks of physical memory\n",
	201	(m68k_num_memory - 1));
	202	m68k_num_memory = 1;
	203	}
	204	m68k_memoffset = m68k_memory[0].addr-PAGE_OFFSET;
1da177e4 LT	205	#endif
	206	}
	207
	208	void __init setup_arch(char **cmdline_p)
	209	{
	210	extern int _etext, _edata, _end;
	211	#ifndef CONFIG_SUN3
	212	unsigned long endmem, startmem;
	213	#endif
	214	int i;
1da177e4 LT	215
	216	/* The bootinfo is located right after the kernel bss */
	217	m68k_parse_bootinfo((const struct bi_record *)&_end);
	218
	219	if (CPU_IS_040)
	220	m68k_is040or060 = 4;
	221	else if (CPU_IS_060)
	222	m68k_is040or060 = 6;
	223
	224	/* FIXME: m68k_fputype is passed in by Penguin booter, which can
	225	* be confused by software FPU emulation. BEWARE.
	226	* We should really do our own FPU check at startup.
	227	* [what do we do with buggy 68LC040s? if we have problems
	228	* with them, we should add a test to check_bugs() below] */
	229	#ifndef CONFIG_M68KFPU_EMU_ONLY
	230	/* clear the fpu if we have one */
	231	if (m68k_fputype & (FPU_68881\|FPU_68882\|FPU_68040\|FPU_68060)) {
	232	volatile int zero = 0;
6ff5801a	233	asm volatile ("frestore %0" : : "m" (zero));
1da177e4 LT	234	}
	235	#endif
	236
	237	if (CPU_IS_060) {
	238	u32 pcr;
	239
	240	asm (".chip 68060; movec %%pcr,%0; .chip 68k"
	241	: "=d" (pcr));
	242	if (((pcr >> 8) & 0xff) <= 5) {
	243	printk("Enabling workaround for errata I14\n");
	244	asm (".chip 68060; movec %0,%%pcr; .chip 68k"
	245	: : "d" (pcr \| 0x20));
	246	}
	247	}
	248
	249	init_mm.start_code = PAGE_OFFSET;
	250	init_mm.end_code = (unsigned long) &_etext;
	251	init_mm.end_data = (unsigned long) &_edata;
	252	init_mm.brk = (unsigned long) &_end;
	253
	254	*cmdline_p = m68k_command_line;
187959f3	255	memcpy(boot_command_line, *cmdline_p, CL_SIZE);
1da177e4	256
d6713b40	257	parse_early_param();
1da177e4	258
0c79358b AV	259	#ifdef CONFIG_DUMMY_CONSOLE
	260	conswitchp = &dummy_con;
	261	#endif
	262
1da177e4 LT	263	switch (m68k_machtype) {
1da177e4 LT	264	#ifdef CONFIG_AMIGA
6ff5801a	265	case MACH_AMIGA:
1da177e4 LT	266	config_amiga();
	267	break;
	268	#endif
	269	#ifdef CONFIG_ATARI
6ff5801a	270	case MACH_ATARI:
1da177e4 LT	271	config_atari();
	272	break;
	273	#endif
	274	#ifdef CONFIG_MAC
6ff5801a	275	case MACH_MAC:
1da177e4 LT	276	config_mac();
	277	break;
	278	#endif
	279	#ifdef CONFIG_SUN3
6ff5801a	280	case MACH_SUN3:
1da177e4 LT	281	config_sun3();
	282	break;
	283	#endif
	284	#ifdef CONFIG_APOLLO
6ff5801a	285	case MACH_APOLLO:
1da177e4 LT	286	config_apollo();
	287	break;
	288	#endif
	289	#ifdef CONFIG_MVME147
6ff5801a	290	case MACH_MVME147:
1da177e4 LT	291	config_mvme147();
	292	break;
	293	#endif
	294	#ifdef CONFIG_MVME16x
6ff5801a	295	case MACH_MVME16x:
1da177e4 LT	296	config_mvme16x();
	297	break;
	298	#endif
	299	#ifdef CONFIG_BVME6000
6ff5801a	300	case MACH_BVME6000:
1da177e4 LT	301	config_bvme6000();
	302	break;
	303	#endif
	304	#ifdef CONFIG_HP300
6ff5801a	305	case MACH_HP300:
1da177e4 LT	306	config_hp300();
	307	break;
	308	#endif
	309	#ifdef CONFIG_Q40
6ff5801a RZ	310	case MACH_Q40:
6ff5801a RZ	311	config_q40();
1da177e4 LT	312	break;
	313	#endif
	314	#ifdef CONFIG_SUN3X
6ff5801a	315	case MACH_SUN3X:
1da177e4 LT	316	config_sun3x();
	317	break;
	318	#endif
6ff5801a RZ	319	default:
6ff5801a RZ	320	panic("No configuration setup");
1da177e4 LT	321	}
	322
	323	#ifndef CONFIG_SUN3
	324	startmem= m68k_memory[0].addr;
	325	endmem = startmem + m68k_memory[0].size;
	326	high_memory = (void *)PAGE_OFFSET;
	327	for (i = 0; i < m68k_num_memory; i++) {
	328	m68k_memory[i].size &= MASK_256K;
	329	if (m68k_memory[i].addr < startmem)
	330	startmem = m68k_memory[i].addr;
	331	if (m68k_memory[i].addr+m68k_memory[i].size > endmem)
	332	endmem = m68k_memory[i].addr+m68k_memory[i].size;
	333	high_memory += m68k_memory[i].size;
	334	}
	335
	336	availmem += init_bootmem_node(NODE_DATA(0), availmem >> PAGE_SHIFT,
	337	startmem >> PAGE_SHIFT, endmem >> PAGE_SHIFT);
	338
	339	for (i = 0; i < m68k_num_memory; i++)
	340	free_bootmem(m68k_memory[i].addr, m68k_memory[i].size);
	341
	342	reserve_bootmem(m68k_memory[0].addr, availmem - m68k_memory[0].addr);
	343
	344	#ifdef CONFIG_BLK_DEV_INITRD
	345	if (m68k_ramdisk.size) {
	346	reserve_bootmem(m68k_ramdisk.addr, m68k_ramdisk.size);
	347	initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
	348	initrd_end = initrd_start + m68k_ramdisk.size;
6ff5801a	349	printk("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
1da177e4 LT	350	}
	351	#endif
	352
	353	#ifdef CONFIG_ATARI
	354	if (MACH_IS_ATARI)
	355	atari_stram_reserve_pages((void *)availmem);
	356	#endif
	357	#ifdef CONFIG_SUN3X
	358	if (MACH_IS_SUN3X) {
	359	dvma_init();
	360	}
	361	#endif
	362
	363	#endif /* !CONFIG_SUN3 */
	364
	365	paging_init();
	366
	367	/* set ISA defs early as possible */
	368	#if defined(CONFIG_ISA) && defined(MULTI_ISA)
	369	#if defined(CONFIG_Q40)
	370	if (MACH_IS_Q40) {
6ff5801a RZ	371	isa_type = Q40_ISA;
6ff5801a RZ	372	isa_sex = 0;
1da177e4 LT	373	}
1da177e4 LT	374	#elif defined(CONFIG_GG2)
6ff5801a RZ	375	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(GG2_ISA)) {
	376	isa_type = GG2_ISA;
	377	isa_sex = 0;
1da177e4 LT	378	}
1da177e4 LT	379	#elif defined(CONFIG_AMIGA_PCMCIA)
6ff5801a RZ	380	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
	381	isa_type = AG_ISA;
	382	isa_sex = 1;
1da177e4 LT	383	}
	384	#endif
	385	#endif
	386	}
	387
	388	static int show_cpuinfo(struct seq_file m, void v)
	389	{
6ff5801a RZ	390	const char cpu, mmu, *fpu;
6ff5801a RZ	391	unsigned long clockfreq, clockfactor;
1da177e4 LT	392
	393	#define LOOP_CYCLES_68020 (8)
	394	#define LOOP_CYCLES_68030 (8)
	395	#define LOOP_CYCLES_68040 (3)
	396	#define LOOP_CYCLES_68060 (1)
	397
6ff5801a RZ	398	if (CPU_IS_020) {
	399	cpu = "68020";
	400	clockfactor = LOOP_CYCLES_68020;
	401	} else if (CPU_IS_030) {
	402	cpu = "68030";
	403	clockfactor = LOOP_CYCLES_68030;
	404	} else if (CPU_IS_040) {
	405	cpu = "68040";
	406	clockfactor = LOOP_CYCLES_68040;
	407	} else if (CPU_IS_060) {
	408	cpu = "68060";
	409	clockfactor = LOOP_CYCLES_68060;
	410	} else {
	411	cpu = "680x0";
	412	clockfactor = 0;
	413	}
1da177e4 LT	414
1da177e4 LT	415	#ifdef CONFIG_M68KFPU_EMU_ONLY
6ff5801a	416	fpu = "none(soft float)";
1da177e4	417	#else
6ff5801a RZ	418	if (m68k_fputype & FPU_68881)
	419	fpu = "68881";
	420	else if (m68k_fputype & FPU_68882)
	421	fpu = "68882";
	422	else if (m68k_fputype & FPU_68040)
	423	fpu = "68040";
	424	else if (m68k_fputype & FPU_68060)
	425	fpu = "68060";
	426	else if (m68k_fputype & FPU_SUNFPA)
	427	fpu = "Sun FPA";
	428	else
	429	fpu = "none";
1da177e4 LT	430	#endif
1da177e4 LT	431
6ff5801a RZ	432	if (m68k_mmutype & MMU_68851)
	433	mmu = "68851";
	434	else if (m68k_mmutype & MMU_68030)
	435	mmu = "68030";
	436	else if (m68k_mmutype & MMU_68040)
	437	mmu = "68040";
	438	else if (m68k_mmutype & MMU_68060)
	439	mmu = "68060";
	440	else if (m68k_mmutype & MMU_SUN3)
	441	mmu = "Sun-3";
	442	else if (m68k_mmutype & MMU_APOLLO)
	443	mmu = "Apollo";
	444	else
	445	mmu = "unknown";
	446
	447	clockfreq = loops_per_jiffy * HZ * clockfactor;
	448
	449	seq_printf(m, "CPU:\t\t%s\n"
1da177e4 LT	450	"MMU:\t\t%s\n"
	451	"FPU:\t\t%s\n"
	452	"Clocking:\t%lu.%1luMHz\n"
	453	"BogoMips:\t%lu.%02lu\n"
	454	"Calibration:\t%lu loops\n",
	455	cpu, mmu, fpu,
	456	clockfreq/1000000,(clockfreq/100000)%10,
	457	loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
	458	loops_per_jiffy);
6ff5801a	459	return 0;
1da177e4 LT	460	}
	461
	462	static void c_start(struct seq_file m, loff_t *pos)
	463	{
	464	return pos < 1 ? (void )1 : NULL;
	465	}
	466	static void c_next(struct seq_file m, void v, loff_t pos)
	467	{
	468	++*pos;
	469	return NULL;
	470	}
	471	static void c_stop(struct seq_file m, void v)
	472	{
	473	}
	474	struct seq_operations cpuinfo_op = {
6ff5801a RZ	475	.start = c_start,
	476	.next = c_next,
	477	.stop = c_stop,
	478	.show = show_cpuinfo,
1da177e4 LT	479	};
	480
	481	int get_hardware_list(char *buffer)
	482	{
6ff5801a RZ	483	int len = 0;
	484	char model[80];
	485	unsigned long mem;
	486	int i;
1da177e4	487
6ff5801a RZ	488	if (mach_get_model)
	489	mach_get_model(model);
	490	else
	491	strcpy(model, "Unknown m68k");
1da177e4	492
6ff5801a RZ	493	len += sprintf(buffer + len, "Model:\t\t%s\n", model);
	494	for (mem = 0, i = 0; i < m68k_num_memory; i++)
	495	mem += m68k_memory[i].size;
	496	len += sprintf(buffer + len, "System Memory:\t%ldK\n", mem >> 10);
1da177e4	497
6ff5801a RZ	498	if (mach_get_hardware_list)
6ff5801a RZ	499	len += mach_get_hardware_list(buffer + len);
1da177e4	500
6ff5801a	501	return len;
1da177e4 LT	502	}
1da177e4 LT	503
1da177e4 LT	504	void check_bugs(void)
	505	{
	506	#ifndef CONFIG_M68KFPU_EMU
	507	if (m68k_fputype == 0) {
6ff5801a RZ	508	printk(KERN_EMERG "*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
	509	"WHICH IS REQUIRED BY LINUX/M68K ***\n");
	510	printk(KERN_EMERG "Upgrade your hardware or join the FPU "
	511	"emulation project\n");
	512	panic("no FPU");
1da177e4 LT	513	}
	514	#endif /* !CONFIG_M68KFPU_EMU */
	515	}
d95fd5fc FT	516
	517	#ifdef CONFIG_ADB
	518	static int __init adb_probe_sync_enable (char *str) {
	519	extern int __adb_probe_sync;
	520	__adb_probe_sync = 1;
	521	return 1;
	522	}
	523
	524	__setup("adb_sync", adb_probe_sync_enable);
	525	#endif /* CONFIG_ADB */