[deliverable/linux.git] / arch / m68k / kernel / setup_mm.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/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/module.h>
#include <linux/initrd.h>

#include <asm/bootinfo.h>
#include <asm/byteorder.h>
#include <asm/sections.h>
#include <asm/setup.h>
#include <asm/fpu.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
#include <asm/natfeat.h>

#if !FPSTATESIZE || !NR_IRQS
#warning No CPU/platform type selected, your kernel will not work!
#warning Are you building an allnoconfig kernel?
#endif

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

int m68k_is040or060;
EXPORT_SYMBOL(m68k_is040or060);

extern unsigned long availmem;

int m68k_num_memory;
EXPORT_SYMBOL(m68k_num_memory);
int m68k_realnum_memory;
EXPORT_SYMBOL(m68k_realnum_memory);
unsigned long m68k_memoffset;
struct m68k_mem_info m68k_memory[NUM_MEMINFO];
EXPORT_SYMBOL(m68k_memory);

static struct m68k_mem_info m68k_ramdisk __initdata;

static char m68k_command_line[CL_SIZE] __initdata;

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);
void (*mach_get_hardware_list) (struct seq_file *m);
/* machine dependent timer functions */
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 int apollo_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)
{
	uint16_t tag;

	save_bootinfo(record);

	while ((tag = be16_to_cpu(record->tag)) != BI_LAST) {
		int unknown = 0;
		const void *data = record->data;
		uint16_t size = be16_to_cpu(record->size);

		switch (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) {
				const struct mem_info *m = data;
				m68k_memory[m68k_num_memory].addr =
					be32_to_cpu(m->addr);
				m68k_memory[m68k_num_memory].size =
					be32_to_cpu(m->size);
				m68k_num_memory++;
			} else
				pr_warn("%s: too many memory chunks\n",
					__func__);
			break;

		case BI_RAMDISK:
			{
				const struct mem_info *m = data;
				m68k_ramdisk.addr = be32_to_cpu(m->addr);
				m68k_ramdisk.size = be32_to_cpu(m->size);
			}
			break;

		case BI_COMMAND_LINE:
			strlcpy(m68k_command_line, 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 if (MACH_IS_APOLLO)
				unknown = apollo_parse_bootinfo(record);
			else
				unknown = 1;
		}
		if (unknown)
			pr_warn("%s: unknown tag 0x%04x ignored\n", __func__,
				tag);
		record = (struct bi_record *)((unsigned long)record + size);
	}

	m68k_realnum_memory = m68k_num_memory;
#ifdef CONFIG_SINGLE_MEMORY_CHUNK
	if (m68k_num_memory > 1) {
		pr_warn("%s: ignoring last %i chunks of physical memory\n",
			__func__, (m68k_num_memory - 1));
		m68k_num_memory = 1;
	}
#endif
}

void __init setup_arch(char **cmdline_p)
{
#ifndef CONFIG_SUN3
	int i;
#endif

	/* The bootinfo is located right after the kernel */
	if (!CPU_IS_COLDFIRE)
		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] */
#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU_ONLY)
	/* clear the fpu if we have one */
	if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060|FPU_COLDFIRE)) {
		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) {
			pr_warn("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;

#if defined(CONFIG_BOOTPARAM)
	strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);
	m68k_command_line[CL_SIZE - 1] = 0;
#endif /* CONFIG_BOOTPARAM */
	process_uboot_commandline(&m68k_command_line[0], CL_SIZE);
	*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
#ifdef CONFIG_COLDFIRE
	case MACH_M54XX:
	case MACH_M5441X:
		config_BSP(NULL, 0);
		break;
#endif
	default:
		panic("No configuration setup");
	}

	paging_init();

#ifdef CONFIG_NATFEAT
	nf_init();
#endif

#ifndef CONFIG_SUN3
	for (i = 1; i < m68k_num_memory; i++)
		free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr,
				  m68k_memory[i].size);
#ifdef CONFIG_BLK_DEV_INITRD
	if (m68k_ramdisk.size) {
		reserve_bootmem_node(__virt_to_node(phys_to_virt(m68k_ramdisk.addr)),
				     m68k_ramdisk.addr, m68k_ramdisk.size,
				     BOOTMEM_DEFAULT);
		initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
		initrd_end = initrd_start + m68k_ramdisk.size;
		pr_info("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 */

/* set ISA defs early as possible */
#if defined(CONFIG_ISA) && defined(MULTI_ISA)
	if (MACH_IS_Q40) {
		isa_type = ISA_TYPE_Q40;
		isa_sex = 0;
	}
#ifdef CONFIG_AMIGA_PCMCIA
	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
		isa_type = ISA_TYPE_AG;
		isa_sex = 1;
	}
#endif
#ifdef CONFIG_ATARI_ROM_ISA
	if (MACH_IS_ATARI) {
		isa_type = ISA_TYPE_ENEC;
		isa_sex = 0;
	}
#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)
#define LOOP_CYCLES_COLDFIRE	(2)

	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 if (CPU_IS_COLDFIRE) {
		cpu = "ColdFire";
		clockfactor = LOOP_CYCLES_COLDFIRE;
	} 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 if (m68k_fputype & FPU_COLDFIRE)
		fpu = "ColdFire";
	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 if (m68k_mmutype & MMU_COLDFIRE)
		mmu = "ColdFire";
	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)
{
}
const struct seq_operations cpuinfo_op = {
	.start	= c_start,
	.next	= c_next,
	.stop	= c_stop,
	.show	= show_cpuinfo,
};

#ifdef CONFIG_PROC_HARDWARE
static int hardware_proc_show(struct seq_file *m, void *v)
{
	char model[80];
	unsigned long mem;
	int i;

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

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

	if (mach_get_hardware_list)
		mach_get_hardware_list(m);

	return 0;
}

static int hardware_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, hardware_proc_show, NULL);
}

static const struct file_operations hardware_proc_fops = {
	.open		= hardware_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

static int __init proc_hardware_init(void)
{
	proc_create("hardware", 0, NULL, &hardware_proc_fops);
	return 0;
}
module_init(proc_hardware_init);
#endif

void check_bugs(void)
{
#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU)
	if (m68k_fputype == 0) {
		pr_emerg("*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
			"WHICH IS REQUIRED BY LINUX/M68K ***\n");
		pr_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
66d857b0 GU	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
	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/proc_fs.h>
	24	#include <linux/seq_file.h>
	25	#include <linux/module.h>
	26	#include <linux/initrd.h>
	27
	28	#include <asm/bootinfo.h>
abe48101	29	#include <asm/byteorder.h>
66d857b0 GU	30	#include <asm/sections.h>
	31	#include <asm/setup.h>
	32	#include <asm/fpu.h>
	33	#include <asm/irq.h>
	34	#include <asm/io.h>
	35	#include <asm/machdep.h>
	36	#ifdef CONFIG_AMIGA
	37	#include <asm/amigahw.h>
	38	#endif
	39	#ifdef CONFIG_ATARI
	40	#include <asm/atarihw.h>
	41	#include <asm/atari_stram.h>
	42	#endif
	43	#ifdef CONFIG_SUN3X
	44	#include <asm/dvma.h>
	45	#endif
	46	#include <asm/natfeat.h>
	47
	48	#if !FPSTATESIZE \|\| !NR_IRQS
	49	#warning No CPU/platform type selected, your kernel will not work!
	50	#warning Are you building an allnoconfig kernel?
	51	#endif
	52
	53	unsigned long m68k_machtype;
	54	EXPORT_SYMBOL(m68k_machtype);
	55	unsigned long m68k_cputype;
	56	EXPORT_SYMBOL(m68k_cputype);
	57	unsigned long m68k_fputype;
	58	unsigned long m68k_mmutype;
	59	EXPORT_SYMBOL(m68k_mmutype);
	60	#ifdef CONFIG_VME
	61	unsigned long vme_brdtype;
	62	EXPORT_SYMBOL(vme_brdtype);
	63	#endif
	64
	65	int m68k_is040or060;
	66	EXPORT_SYMBOL(m68k_is040or060);
	67
	68	extern unsigned long availmem;
	69
	70	int m68k_num_memory;
	71	EXPORT_SYMBOL(m68k_num_memory);
	72	int m68k_realnum_memory;
	73	EXPORT_SYMBOL(m68k_realnum_memory);
	74	unsigned long m68k_memoffset;
79930084	75	struct m68k_mem_info m68k_memory[NUM_MEMINFO];
66d857b0 GU	76	EXPORT_SYMBOL(m68k_memory);
66d857b0 GU	77
79930084	78	static struct m68k_mem_info m68k_ramdisk __initdata;
66d857b0	79
a4df02a2	80	static char m68k_command_line[CL_SIZE] __initdata;
66d857b0 GU	81
	82	void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
	83	/* machine dependent irq functions */
	84	void (*mach_init_IRQ) (void) __initdata = NULL;
	85	void (mach_get_model) (char model);
	86	void (mach_get_hardware_list) (struct seq_file m);
	87	/* machine dependent timer functions */
66d857b0 GU	88	int (mach_hwclk) (int, struct rtc_time);
	89	EXPORT_SYMBOL(mach_hwclk);
	90	int (*mach_set_clock_mmss) (unsigned long);
	91	unsigned int (*mach_get_ss)(void);
	92	int (mach_get_rtc_pll)(struct rtc_pll_info );
	93	int (mach_set_rtc_pll)(struct rtc_pll_info );
	94	EXPORT_SYMBOL(mach_get_ss);
	95	EXPORT_SYMBOL(mach_get_rtc_pll);
	96	EXPORT_SYMBOL(mach_set_rtc_pll);
	97	void (*mach_reset)( void );
	98	void (*mach_halt)( void );
	99	void (*mach_power_off)( void );
	100	long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */
	101	#ifdef CONFIG_HEARTBEAT
	102	void (*mach_heartbeat) (int);
	103	EXPORT_SYMBOL(mach_heartbeat);
	104	#endif
	105	#ifdef CONFIG_M68K_L2_CACHE
	106	void (*mach_l2_flush) (int);
	107	#endif
	108	#if defined(CONFIG_INPUT_M68K_BEEP) \|\| defined(CONFIG_INPUT_M68K_BEEP_MODULE)
	109	void (*mach_beep)(unsigned int, unsigned int);
	110	EXPORT_SYMBOL(mach_beep);
	111	#endif
	112	#if defined(CONFIG_ISA) && defined(MULTI_ISA)
	113	int isa_type;
	114	int isa_sex;
	115	EXPORT_SYMBOL(isa_type);
	116	EXPORT_SYMBOL(isa_sex);
	117	#endif
	118
	119	extern int amiga_parse_bootinfo(const struct bi_record *);
	120	extern int atari_parse_bootinfo(const struct bi_record *);
	121	extern int mac_parse_bootinfo(const struct bi_record *);
	122	extern int q40_parse_bootinfo(const struct bi_record *);
	123	extern int bvme6000_parse_bootinfo(const struct bi_record *);
	124	extern int mvme16x_parse_bootinfo(const struct bi_record *);
	125	extern int mvme147_parse_bootinfo(const struct bi_record *);
	126	extern int hp300_parse_bootinfo(const struct bi_record *);
	127	extern int apollo_parse_bootinfo(const struct bi_record *);
	128
	129	extern void config_amiga(void);
	130	extern void config_atari(void);
	131	extern void config_mac(void);
	132	extern void config_sun3(void);
	133	extern void config_apollo(void);
	134	extern void config_mvme147(void);
	135	extern void config_mvme16x(void);
	136	extern void config_bvme6000(void);
	137	extern void config_hp300(void);
	138	extern void config_q40(void);
	139	extern void config_sun3x(void);
	140
	141	#define MASK_256K 0xfffc0000
	142
	143	extern void paging_init(void);
	144
	145	static void __init m68k_parse_bootinfo(const struct bi_record *record)
	146	{
abe48101 GU	147	uint16_t tag;
abe48101 GU	148
7bc1e4d8 GU	149	save_bootinfo(record);
7bc1e4d8 GU	150
abe48101	151	while ((tag = be16_to_cpu(record->tag)) != BI_LAST) {
66d857b0	152	int unknown = 0;
abe48101 GU	153	const void *data = record->data;
abe48101 GU	154	uint16_t size = be16_to_cpu(record->size);
66d857b0	155
abe48101	156	switch (tag) {
66d857b0 GU	157	case BI_MACHTYPE:
	158	case BI_CPUTYPE:
	159	case BI_FPUTYPE:
	160	case BI_MMUTYPE:
	161	/* Already set up by head.S */
	162	break;
	163
	164	case BI_MEMCHUNK:
	165	if (m68k_num_memory < NUM_MEMINFO) {
abe48101 GU	166	const struct mem_info *m = data;
	167	m68k_memory[m68k_num_memory].addr =
	168	be32_to_cpu(m->addr);
	169	m68k_memory[m68k_num_memory].size =
	170	be32_to_cpu(m->size);
66d857b0 GU	171	m68k_num_memory++;
66d857b0 GU	172	} else
6074a139 GU	173	pr_warn("%s: too many memory chunks\n",
6074a139 GU	174	__func__);
66d857b0 GU	175	break;
	176
	177	case BI_RAMDISK:
abe48101 GU	178	{
	179	const struct mem_info *m = data;
	180	m68k_ramdisk.addr = be32_to_cpu(m->addr);
	181	m68k_ramdisk.size = be32_to_cpu(m->size);
	182	}
66d857b0 GU	183	break;
	184
	185	case BI_COMMAND_LINE:
abe48101	186	strlcpy(m68k_command_line, data,
66d857b0 GU	187	sizeof(m68k_command_line));
	188	break;
	189
	190	default:
	191	if (MACH_IS_AMIGA)
	192	unknown = amiga_parse_bootinfo(record);
	193	else if (MACH_IS_ATARI)
	194	unknown = atari_parse_bootinfo(record);
	195	else if (MACH_IS_MAC)
	196	unknown = mac_parse_bootinfo(record);
	197	else if (MACH_IS_Q40)
	198	unknown = q40_parse_bootinfo(record);
	199	else if (MACH_IS_BVME6000)
	200	unknown = bvme6000_parse_bootinfo(record);
	201	else if (MACH_IS_MVME16x)
	202	unknown = mvme16x_parse_bootinfo(record);
	203	else if (MACH_IS_MVME147)
	204	unknown = mvme147_parse_bootinfo(record);
	205	else if (MACH_IS_HP300)
	206	unknown = hp300_parse_bootinfo(record);
	207	else if (MACH_IS_APOLLO)
	208	unknown = apollo_parse_bootinfo(record);
	209	else
	210	unknown = 1;
	211	}
	212	if (unknown)
6074a139	213	pr_warn("%s: unknown tag 0x%04x ignored\n", __func__,
abe48101 GU	214	tag);
abe48101 GU	215	record = (struct bi_record *)((unsigned long)record + size);
66d857b0 GU	216	}
	217
	218	m68k_realnum_memory = m68k_num_memory;
	219	#ifdef CONFIG_SINGLE_MEMORY_CHUNK
	220	if (m68k_num_memory > 1) {
6074a139 GU	221	pr_warn("%s: ignoring last %i chunks of physical memory\n",
6074a139 GU	222	__func__, (m68k_num_memory - 1));
66d857b0 GU	223	m68k_num_memory = 1;
	224	}
	225	#endif
	226	}
	227
	228	void __init setup_arch(char **cmdline_p)
	229	{
b2cb9241	230	#ifndef CONFIG_SUN3
66d857b0	231	int i;
b2cb9241	232	#endif
66d857b0	233
29a20203	234	/* The bootinfo is located right after the kernel */
37314540 GU	235	if (!CPU_IS_COLDFIRE)
37314540 GU	236	m68k_parse_bootinfo((const struct bi_record *)_end);
66d857b0 GU	237
	238	if (CPU_IS_040)
	239	m68k_is040or060 = 4;
	240	else if (CPU_IS_060)
	241	m68k_is040or060 = 6;
	242
	243	/* FIXME: m68k_fputype is passed in by Penguin booter, which can
	244	* be confused by software FPU emulation. BEWARE.
	245	* We should really do our own FPU check at startup.
	246	* [what do we do with buggy 68LC040s? if we have problems
	247	* with them, we should add a test to check_bugs() below] */
480ec1eb	248	#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU_ONLY)
66d857b0	249	/* clear the fpu if we have one */
0a2796da	250	if (m68k_fputype & (FPU_68881\|FPU_68882\|FPU_68040\|FPU_68060\|FPU_COLDFIRE)) {
66d857b0 GU	251	volatile int zero = 0;
	252	asm volatile ("frestore %0" : : "m" (zero));
	253	}
	254	#endif
	255
	256	if (CPU_IS_060) {
	257	u32 pcr;
	258
	259	asm (".chip 68060; movec %%pcr,%0; .chip 68k"
	260	: "=d" (pcr));
	261	if (((pcr >> 8) & 0xff) <= 5) {
6074a139	262	pr_warn("Enabling workaround for errata I14\n");
66d857b0 GU	263	asm (".chip 68060; movec %0,%%pcr; .chip 68k"
	264	: : "d" (pcr \| 0x20));
	265	}
	266	}
	267
	268	init_mm.start_code = PAGE_OFFSET;
	269	init_mm.end_code = (unsigned long)_etext;
	270	init_mm.end_data = (unsigned long)_edata;
	271	init_mm.brk = (unsigned long)_end;
	272
d1db9120 GU	273	#if defined(CONFIG_BOOTPARAM)
	274	strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);
	275	m68k_command_line[CL_SIZE - 1] = 0;
	276	#endif /* CONFIG_BOOTPARAM */
e93a0c76	277	process_uboot_commandline(&m68k_command_line[0], CL_SIZE);
66d857b0 GU	278	*cmdline_p = m68k_command_line;
	279	memcpy(boot_command_line, *cmdline_p, CL_SIZE);
	280
	281	parse_early_param();
	282
	283	#ifdef CONFIG_DUMMY_CONSOLE
	284	conswitchp = &dummy_con;
	285	#endif
	286
	287	switch (m68k_machtype) {
	288	#ifdef CONFIG_AMIGA
	289	case MACH_AMIGA:
	290	config_amiga();
	291	break;
	292	#endif
	293	#ifdef CONFIG_ATARI
	294	case MACH_ATARI:
	295	config_atari();
	296	break;
	297	#endif
	298	#ifdef CONFIG_MAC
	299	case MACH_MAC:
	300	config_mac();
	301	break;
	302	#endif
	303	#ifdef CONFIG_SUN3
	304	case MACH_SUN3:
	305	config_sun3();
	306	break;
	307	#endif
	308	#ifdef CONFIG_APOLLO
	309	case MACH_APOLLO:
	310	config_apollo();
	311	break;
	312	#endif
	313	#ifdef CONFIG_MVME147
	314	case MACH_MVME147:
	315	config_mvme147();
	316	break;
	317	#endif
	318	#ifdef CONFIG_MVME16x
	319	case MACH_MVME16x:
	320	config_mvme16x();
	321	break;
	322	#endif
	323	#ifdef CONFIG_BVME6000
	324	case MACH_BVME6000:
	325	config_bvme6000();
	326	break;
	327	#endif
	328	#ifdef CONFIG_HP300
	329	case MACH_HP300:
	330	config_hp300();
	331	break;
	332	#endif
	333	#ifdef CONFIG_Q40
	334	case MACH_Q40:
	335	config_q40();
	336	break;
	337	#endif
	338	#ifdef CONFIG_SUN3X
	339	case MACH_SUN3X:
	340	config_sun3x();
	341	break;
37314540 GU	342	#endif
	343	#ifdef CONFIG_COLDFIRE
	344	case MACH_M54XX:
657ae75f	345	case MACH_M5441X:
37314540 GU	346	config_BSP(NULL, 0);
37314540 GU	347	break;
66d857b0 GU	348	#endif
	349	default:
	350	panic("No configuration setup");
	351	}
	352
7a15dd5c GU	353	paging_init();
7a15dd5c GU	354
66d857b0 GU	355	#ifdef CONFIG_NATFEAT
	356	nf_init();
	357	#endif
	358
66d857b0 GU	359	#ifndef CONFIG_SUN3
	360	for (i = 1; i < m68k_num_memory; i++)
	361	free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr,
	362	m68k_memory[i].size);
	363	#ifdef CONFIG_BLK_DEV_INITRD
	364	if (m68k_ramdisk.size) {
	365	reserve_bootmem_node(__virt_to_node(phys_to_virt(m68k_ramdisk.addr)),
	366	m68k_ramdisk.addr, m68k_ramdisk.size,
	367	BOOTMEM_DEFAULT);
	368	initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
	369	initrd_end = initrd_start + m68k_ramdisk.size;
6074a139	370	pr_info("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
66d857b0 GU	371	}
	372	#endif
	373
	374	#ifdef CONFIG_ATARI
	375	if (MACH_IS_ATARI)
	376	atari_stram_reserve_pages((void *)availmem);
	377	#endif
	378	#ifdef CONFIG_SUN3X
	379	if (MACH_IS_SUN3X) {
	380	dvma_init();
	381	}
	382	#endif
	383
	384	#endif /* !CONFIG_SUN3 */
	385
	386	/* set ISA defs early as possible */
	387	#if defined(CONFIG_ISA) && defined(MULTI_ISA)
	388	if (MACH_IS_Q40) {
	389	isa_type = ISA_TYPE_Q40;
	390	isa_sex = 0;
	391	}
	392	#ifdef CONFIG_AMIGA_PCMCIA
	393	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
	394	isa_type = ISA_TYPE_AG;
	395	isa_sex = 1;
	396	}
	397	#endif
84b16b7b MS	398	#ifdef CONFIG_ATARI_ROM_ISA
	399	if (MACH_IS_ATARI) {
	400	isa_type = ISA_TYPE_ENEC;
	401	isa_sex = 0;
	402	}
	403	#endif
66d857b0 GU	404	#endif
	405	}
	406
	407	static int show_cpuinfo(struct seq_file m, void v)
	408	{
	409	const char cpu, mmu, *fpu;
	410	unsigned long clockfreq, clockfactor;
	411
	412	#define LOOP_CYCLES_68020 (8)
	413	#define LOOP_CYCLES_68030 (8)
	414	#define LOOP_CYCLES_68040 (3)
	415	#define LOOP_CYCLES_68060 (1)
060632ad	416	#define LOOP_CYCLES_COLDFIRE (2)
66d857b0 GU	417
	418	if (CPU_IS_020) {
	419	cpu = "68020";
	420	clockfactor = LOOP_CYCLES_68020;
	421	} else if (CPU_IS_030) {
	422	cpu = "68030";
	423	clockfactor = LOOP_CYCLES_68030;
	424	} else if (CPU_IS_040) {
	425	cpu = "68040";
	426	clockfactor = LOOP_CYCLES_68040;
	427	} else if (CPU_IS_060) {
	428	cpu = "68060";
	429	clockfactor = LOOP_CYCLES_68060;
060632ad GU	430	} else if (CPU_IS_COLDFIRE) {
	431	cpu = "ColdFire";
	432	clockfactor = LOOP_CYCLES_COLDFIRE;
66d857b0 GU	433	} else {
	434	cpu = "680x0";
	435	clockfactor = 0;
	436	}
	437
	438	#ifdef CONFIG_M68KFPU_EMU_ONLY
	439	fpu = "none(soft float)";
	440	#else
	441	if (m68k_fputype & FPU_68881)
	442	fpu = "68881";
	443	else if (m68k_fputype & FPU_68882)
	444	fpu = "68882";
	445	else if (m68k_fputype & FPU_68040)
	446	fpu = "68040";
	447	else if (m68k_fputype & FPU_68060)
	448	fpu = "68060";
	449	else if (m68k_fputype & FPU_SUNFPA)
	450	fpu = "Sun FPA";
060632ad GU	451	else if (m68k_fputype & FPU_COLDFIRE)
060632ad GU	452	fpu = "ColdFire";
66d857b0 GU	453	else
	454	fpu = "none";
	455	#endif
	456
	457	if (m68k_mmutype & MMU_68851)
	458	mmu = "68851";
	459	else if (m68k_mmutype & MMU_68030)
	460	mmu = "68030";
	461	else if (m68k_mmutype & MMU_68040)
	462	mmu = "68040";
	463	else if (m68k_mmutype & MMU_68060)
	464	mmu = "68060";
	465	else if (m68k_mmutype & MMU_SUN3)
	466	mmu = "Sun-3";
	467	else if (m68k_mmutype & MMU_APOLLO)
	468	mmu = "Apollo";
060632ad GU	469	else if (m68k_mmutype & MMU_COLDFIRE)
060632ad GU	470	mmu = "ColdFire";
66d857b0 GU	471	else
	472	mmu = "unknown";
	473
	474	clockfreq = loops_per_jiffy * HZ * clockfactor;
	475
	476	seq_printf(m, "CPU:\t\t%s\n"
	477	"MMU:\t\t%s\n"
	478	"FPU:\t\t%s\n"
	479	"Clocking:\t%lu.%1luMHz\n"
	480	"BogoMips:\t%lu.%02lu\n"
	481	"Calibration:\t%lu loops\n",
	482	cpu, mmu, fpu,
	483	clockfreq/1000000,(clockfreq/100000)%10,
	484	loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
	485	loops_per_jiffy);
	486	return 0;
	487	}
	488
	489	static void c_start(struct seq_file m, loff_t *pos)
	490	{
	491	return pos < 1 ? (void )1 : NULL;
	492	}
	493	static void c_next(struct seq_file m, void v, loff_t pos)
	494	{
	495	++*pos;
	496	return NULL;
	497	}
	498	static void c_stop(struct seq_file m, void v)
	499	{
	500	}
	501	const struct seq_operations cpuinfo_op = {
	502	.start = c_start,
	503	.next = c_next,
	504	.stop = c_stop,
	505	.show = show_cpuinfo,
	506	};
	507
	508	#ifdef CONFIG_PROC_HARDWARE
	509	static int hardware_proc_show(struct seq_file m, void v)
	510	{
	511	char model[80];
	512	unsigned long mem;
	513	int i;
	514
	515	if (mach_get_model)
	516	mach_get_model(model);
	517	else
	518	strcpy(model, "Unknown m68k");
	519
	520	seq_printf(m, "Model:\t\t%s\n", model);
	521	for (mem = 0, i = 0; i < m68k_num_memory; i++)
	522	mem += m68k_memory[i].size;
	523	seq_printf(m, "System Memory:\t%ldK\n", mem >> 10);
	524
	525	if (mach_get_hardware_list)
	526	mach_get_hardware_list(m);
	527
	528	return 0;
	529	}
	530
	531	static int hardware_proc_open(struct inode inode, struct file file)
	532	{
	533	return single_open(file, hardware_proc_show, NULL);
	534	}
535
536	static const struct file_operations hardware_proc_fops = {
537	.open = hardware_proc_open,
538	.read = seq_read,
539	.llseek = seq_lseek,
540	.release = single_release,
541	};
542
543	static int __init proc_hardware_init(void)
544	{
545	proc_create("hardware", 0, NULL, &hardware_proc_fops);
546	return 0;
547	}
548	module_init(proc_hardware_init);
549	#endif
550
551	void check_bugs(void)
552	{
7c60b291	553	#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU)
66d857b0	554	if (m68k_fputype == 0) {
6074a139	555	pr_emerg("*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
66d857b0	556	"WHICH IS REQUIRED BY LINUX/M68K ***\n");
6074a139	557	pr_emerg("Upgrade your hardware or join the FPU "
66d857b0 GU	558	"emulation project\n");
	559	panic("no FPU");
	560	}
	561	#endif /* !CONFIG_M68KFPU_EMU */
	562	}
	563
	564	#ifdef CONFIG_ADB
	565	static int __init adb_probe_sync_enable (char *str) {
	566	extern int __adb_probe_sync;
	567	__adb_probe_sync = 1;
	568	return 1;
	569	}
	570
	571	__setup("adb_sync", adb_probe_sync_enable);
	572	#endif /* CONFIG_ADB */