[linux-block.git] / arch / m68k / kernel / setup_mm.c

// SPDX-License-Identifier: GPL-2.0
/*
 *  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/memblock.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);
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_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);
				memblock_add(m68k_memory[m68k_num_memory].addr,
					     m68k_memory[m68k_num_memory].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)
{
	/* 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:
		cf_bootmem_alloc();
		cf_mmu_context_init();
		config_BSP(NULL, 0);
		break;
#endif
	default:
		panic("No configuration setup");
	}

	paging_init();

#ifdef CONFIG_NATFEAT
	nf_init();
#endif

#ifndef CONFIG_SUN3
#ifdef CONFIG_BLK_DEV_INITRD
	if (m68k_ramdisk.size) {
		memblock_reserve(m68k_ramdisk.addr, m68k_ramdisk.size);
		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 __init proc_hardware_init(void)
{
	proc_create_single("hardware", 0, NULL, hardware_proc_show);
	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
b2441318	1	// SPDX-License-Identifier: GPL-2.0
66d857b0 GU	2	/*
	3	* linux/arch/m68k/kernel/setup.c
	4	*
	5	* Copyright (C) 1995 Hamish Macdonald
	6	*/
	7
	8	/*
	9	* This file handles the architecture-dependent parts of system setup
	10	*/
	11
	12	#include <linux/kernel.h>
	13	#include <linux/mm.h>
	14	#include <linux/sched.h>
	15	#include <linux/delay.h>
	16	#include <linux/interrupt.h>
	17	#include <linux/fs.h>
	18	#include <linux/console.h>
	19	#include <linux/genhd.h>
	20	#include <linux/errno.h>
	21	#include <linux/string.h>
	22	#include <linux/init.h>
1008a115	23	#include <linux/memblock.h>
66d857b0 GU	24	#include <linux/proc_fs.h>
	25	#include <linux/seq_file.h>
	26	#include <linux/module.h>
	27	#include <linux/initrd.h>
	28
	29	#include <asm/bootinfo.h>
abe48101	30	#include <asm/byteorder.h>
66d857b0 GU	31	#include <asm/sections.h>
	32	#include <asm/setup.h>
	33	#include <asm/fpu.h>
	34	#include <asm/irq.h>
	35	#include <asm/io.h>
	36	#include <asm/machdep.h>
	37	#ifdef CONFIG_AMIGA
	38	#include <asm/amigahw.h>
	39	#endif
	40	#ifdef CONFIG_ATARI
	41	#include <asm/atarihw.h>
	42	#include <asm/atari_stram.h>
	43	#endif
	44	#ifdef CONFIG_SUN3X
	45	#include <asm/dvma.h>
	46	#endif
	47	#include <asm/natfeat.h>
	48
	49	#if !FPSTATESIZE \|\| !NR_IRQS
	50	#warning No CPU/platform type selected, your kernel will not work!
	51	#warning Are you building an allnoconfig kernel?
	52	#endif
	53
	54	unsigned long m68k_machtype;
	55	EXPORT_SYMBOL(m68k_machtype);
	56	unsigned long m68k_cputype;
	57	EXPORT_SYMBOL(m68k_cputype);
	58	unsigned long m68k_fputype;
	59	unsigned long m68k_mmutype;
	60	EXPORT_SYMBOL(m68k_mmutype);
	61	#ifdef CONFIG_VME
	62	unsigned long vme_brdtype;
	63	EXPORT_SYMBOL(vme_brdtype);
	64	#endif
	65
	66	int m68k_is040or060;
	67	EXPORT_SYMBOL(m68k_is040or060);
	68
	69	extern unsigned long availmem;
	70
	71	int m68k_num_memory;
	72	EXPORT_SYMBOL(m68k_num_memory);
	73	int m68k_realnum_memory;
	74	EXPORT_SYMBOL(m68k_realnum_memory);
	75	unsigned long m68k_memoffset;
79930084	76	struct m68k_mem_info m68k_memory[NUM_MEMINFO];
66d857b0 GU	77	EXPORT_SYMBOL(m68k_memory);
66d857b0 GU	78
79930084	79	static struct m68k_mem_info m68k_ramdisk __initdata;
66d857b0	80
a4df02a2	81	static char m68k_command_line[CL_SIZE] __initdata;
66d857b0 GU	82
	83	void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
	84	/* machine dependent irq functions */
	85	void (*mach_init_IRQ) (void) __initdata = NULL;
	86	void (mach_get_model) (char model);
	87	void (mach_get_hardware_list) (struct seq_file m);
	88	/* machine dependent timer functions */
66d857b0 GU	89	int (mach_hwclk) (int, struct rtc_time);
66d857b0 GU	90	EXPORT_SYMBOL(mach_hwclk);
66d857b0 GU	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
66d857b0 GU	108	#if defined(CONFIG_ISA) && defined(MULTI_ISA)
	109	int isa_type;
	110	int isa_sex;
	111	EXPORT_SYMBOL(isa_type);
	112	EXPORT_SYMBOL(isa_sex);
	113	#endif
	114
	115	extern int amiga_parse_bootinfo(const struct bi_record *);
	116	extern int atari_parse_bootinfo(const struct bi_record *);
	117	extern int mac_parse_bootinfo(const struct bi_record *);
	118	extern int q40_parse_bootinfo(const struct bi_record *);
	119	extern int bvme6000_parse_bootinfo(const struct bi_record *);
	120	extern int mvme16x_parse_bootinfo(const struct bi_record *);
	121	extern int mvme147_parse_bootinfo(const struct bi_record *);
	122	extern int hp300_parse_bootinfo(const struct bi_record *);
	123	extern int apollo_parse_bootinfo(const struct bi_record *);
	124
	125	extern void config_amiga(void);
	126	extern void config_atari(void);
	127	extern void config_mac(void);
	128	extern void config_sun3(void);
	129	extern void config_apollo(void);
	130	extern void config_mvme147(void);
	131	extern void config_mvme16x(void);
	132	extern void config_bvme6000(void);
	133	extern void config_hp300(void);
	134	extern void config_q40(void);
	135	extern void config_sun3x(void);
	136
	137	#define MASK_256K 0xfffc0000
	138
	139	extern void paging_init(void);
	140
	141	static void __init m68k_parse_bootinfo(const struct bi_record *record)
	142	{
abe48101 GU	143	uint16_t tag;
abe48101 GU	144
7bc1e4d8 GU	145	save_bootinfo(record);
7bc1e4d8 GU	146
abe48101	147	while ((tag = be16_to_cpu(record->tag)) != BI_LAST) {
66d857b0	148	int unknown = 0;
abe48101 GU	149	const void *data = record->data;
abe48101 GU	150	uint16_t size = be16_to_cpu(record->size);
66d857b0	151
abe48101	152	switch (tag) {
66d857b0 GU	153	case BI_MACHTYPE:
	154	case BI_CPUTYPE:
	155	case BI_FPUTYPE:
	156	case BI_MMUTYPE:
	157	/* Already set up by head.S */
	158	break;
	159
	160	case BI_MEMCHUNK:
	161	if (m68k_num_memory < NUM_MEMINFO) {
abe48101 GU	162	const struct mem_info *m = data;
	163	m68k_memory[m68k_num_memory].addr =
	164	be32_to_cpu(m->addr);
	165	m68k_memory[m68k_num_memory].size =
	166	be32_to_cpu(m->size);
1008a115 MR	167	memblock_add(m68k_memory[m68k_num_memory].addr,
1008a115 MR	168	m68k_memory[m68k_num_memory].size);
66d857b0 GU	169	m68k_num_memory++;
66d857b0 GU	170	} else
6074a139 GU	171	pr_warn("%s: too many memory chunks\n",
6074a139 GU	172	__func__);
66d857b0 GU	173	break;
	174
	175	case BI_RAMDISK:
abe48101 GU	176	{
	177	const struct mem_info *m = data;
	178	m68k_ramdisk.addr = be32_to_cpu(m->addr);
	179	m68k_ramdisk.size = be32_to_cpu(m->size);
	180	}
66d857b0 GU	181	break;
	182
	183	case BI_COMMAND_LINE:
abe48101	184	strlcpy(m68k_command_line, data,
66d857b0 GU	185	sizeof(m68k_command_line));
	186	break;
	187
	188	default:
	189	if (MACH_IS_AMIGA)
	190	unknown = amiga_parse_bootinfo(record);
	191	else if (MACH_IS_ATARI)
	192	unknown = atari_parse_bootinfo(record);
	193	else if (MACH_IS_MAC)
	194	unknown = mac_parse_bootinfo(record);
	195	else if (MACH_IS_Q40)
	196	unknown = q40_parse_bootinfo(record);
	197	else if (MACH_IS_BVME6000)
	198	unknown = bvme6000_parse_bootinfo(record);
	199	else if (MACH_IS_MVME16x)
	200	unknown = mvme16x_parse_bootinfo(record);
	201	else if (MACH_IS_MVME147)
	202	unknown = mvme147_parse_bootinfo(record);
	203	else if (MACH_IS_HP300)
	204	unknown = hp300_parse_bootinfo(record);
	205	else if (MACH_IS_APOLLO)
	206	unknown = apollo_parse_bootinfo(record);
	207	else
	208	unknown = 1;
	209	}
	210	if (unknown)
6074a139	211	pr_warn("%s: unknown tag 0x%04x ignored\n", __func__,
abe48101 GU	212	tag);
abe48101 GU	213	record = (struct bi_record *)((unsigned long)record + size);
66d857b0 GU	214	}
	215
	216	m68k_realnum_memory = m68k_num_memory;
	217	#ifdef CONFIG_SINGLE_MEMORY_CHUNK
	218	if (m68k_num_memory > 1) {
6074a139 GU	219	pr_warn("%s: ignoring last %i chunks of physical memory\n",
6074a139 GU	220	__func__, (m68k_num_memory - 1));
66d857b0 GU	221	m68k_num_memory = 1;
	222	}
	223	#endif
	224	}
	225
	226	void __init setup_arch(char **cmdline_p)
	227	{
29a20203	228	/* The bootinfo is located right after the kernel */
37314540 GU	229	if (!CPU_IS_COLDFIRE)
37314540 GU	230	m68k_parse_bootinfo((const struct bi_record *)_end);
66d857b0 GU	231
	232	if (CPU_IS_040)
	233	m68k_is040or060 = 4;
	234	else if (CPU_IS_060)
	235	m68k_is040or060 = 6;
	236
	237	/* FIXME: m68k_fputype is passed in by Penguin booter, which can
	238	* be confused by software FPU emulation. BEWARE.
	239	* We should really do our own FPU check at startup.
	240	* [what do we do with buggy 68LC040s? if we have problems
	241	* with them, we should add a test to check_bugs() below] */
6d3ec805	242	#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU_ONLY)
66d857b0	243	/* clear the fpu if we have one */
0a2796da	244	if (m68k_fputype & (FPU_68881\|FPU_68882\|FPU_68040\|FPU_68060\|FPU_COLDFIRE)) {
66d857b0 GU	245	volatile int zero = 0;
	246	asm volatile ("frestore %0" : : "m" (zero));
	247	}
	248	#endif
	249
	250	if (CPU_IS_060) {
	251	u32 pcr;
	252
	253	asm (".chip 68060; movec %%pcr,%0; .chip 68k"
	254	: "=d" (pcr));
	255	if (((pcr >> 8) & 0xff) <= 5) {
6074a139	256	pr_warn("Enabling workaround for errata I14\n");
66d857b0 GU	257	asm (".chip 68060; movec %0,%%pcr; .chip 68k"
	258	: : "d" (pcr \| 0x20));
	259	}
	260	}
	261
	262	init_mm.start_code = PAGE_OFFSET;
	263	init_mm.end_code = (unsigned long)_etext;
	264	init_mm.end_data = (unsigned long)_edata;
	265	init_mm.brk = (unsigned long)_end;
	266
d1db9120 GU	267	#if defined(CONFIG_BOOTPARAM)
	268	strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);
	269	m68k_command_line[CL_SIZE - 1] = 0;
	270	#endif /* CONFIG_BOOTPARAM */
aa5ac789	271	process_uboot_commandline(&m68k_command_line[0], CL_SIZE);
66d857b0 GU	272	*cmdline_p = m68k_command_line;
	273	memcpy(boot_command_line, *cmdline_p, CL_SIZE);
	274
	275	parse_early_param();
	276
	277	#ifdef CONFIG_DUMMY_CONSOLE
	278	conswitchp = &dummy_con;
	279	#endif
	280
	281	switch (m68k_machtype) {
	282	#ifdef CONFIG_AMIGA
	283	case MACH_AMIGA:
	284	config_amiga();
	285	break;
	286	#endif
	287	#ifdef CONFIG_ATARI
	288	case MACH_ATARI:
	289	config_atari();
	290	break;
	291	#endif
	292	#ifdef CONFIG_MAC
	293	case MACH_MAC:
	294	config_mac();
	295	break;
	296	#endif
	297	#ifdef CONFIG_SUN3
	298	case MACH_SUN3:
	299	config_sun3();
	300	break;
	301	#endif
	302	#ifdef CONFIG_APOLLO
	303	case MACH_APOLLO:
	304	config_apollo();
	305	break;
	306	#endif
	307	#ifdef CONFIG_MVME147
	308	case MACH_MVME147:
	309	config_mvme147();
	310	break;
	311	#endif
	312	#ifdef CONFIG_MVME16x
	313	case MACH_MVME16x:
	314	config_mvme16x();
	315	break;
	316	#endif
	317	#ifdef CONFIG_BVME6000
	318	case MACH_BVME6000:
	319	config_bvme6000();
	320	break;
	321	#endif
	322	#ifdef CONFIG_HP300
	323	case MACH_HP300:
	324	config_hp300();
	325	break;
	326	#endif
	327	#ifdef CONFIG_Q40
	328	case MACH_Q40:
	329	config_q40();
	330	break;
	331	#endif
	332	#ifdef CONFIG_SUN3X
	333	case MACH_SUN3X:
	334	config_sun3x();
	335	break;
37314540 GU	336	#endif
	337	#ifdef CONFIG_COLDFIRE
	338	case MACH_M54XX:
81d33350	339	case MACH_M5441X:
34fa9b21 GU	340	cf_bootmem_alloc();
34fa9b21 GU	341	cf_mmu_context_init();
37314540 GU	342	config_BSP(NULL, 0);
37314540 GU	343	break;
66d857b0 GU	344	#endif
	345	default:
	346	panic("No configuration setup");
	347	}
	348
7a15dd5c GU	349	paging_init();
7a15dd5c GU	350
66d857b0 GU	351	#ifdef CONFIG_NATFEAT
	352	nf_init();
	353	#endif
	354
66d857b0	355	#ifndef CONFIG_SUN3
66d857b0 GU	356	#ifdef CONFIG_BLK_DEV_INITRD
66d857b0 GU	357	if (m68k_ramdisk.size) {
1008a115	358	memblock_reserve(m68k_ramdisk.addr, m68k_ramdisk.size);
66d857b0 GU	359	initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
66d857b0 GU	360	initrd_end = initrd_start + m68k_ramdisk.size;
6074a139	361	pr_info("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
66d857b0 GU	362	}
	363	#endif
	364
	365	#ifdef CONFIG_ATARI
	366	if (MACH_IS_ATARI)
	367	atari_stram_reserve_pages((void *)availmem);
	368	#endif
	369	#ifdef CONFIG_SUN3X
	370	if (MACH_IS_SUN3X) {
	371	dvma_init();
	372	}
	373	#endif
	374
	375	#endif /* !CONFIG_SUN3 */
	376
	377	/* set ISA defs early as possible */
	378	#if defined(CONFIG_ISA) && defined(MULTI_ISA)
	379	if (MACH_IS_Q40) {
	380	isa_type = ISA_TYPE_Q40;
	381	isa_sex = 0;
	382	}
	383	#ifdef CONFIG_AMIGA_PCMCIA
	384	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
	385	isa_type = ISA_TYPE_AG;
	386	isa_sex = 1;
	387	}
	388	#endif
84b16b7b MS	389	#ifdef CONFIG_ATARI_ROM_ISA
	390	if (MACH_IS_ATARI) {
	391	isa_type = ISA_TYPE_ENEC;
	392	isa_sex = 0;
	393	}
	394	#endif
66d857b0 GU	395	#endif
	396	}
	397
	398	static int show_cpuinfo(struct seq_file m, void v)
	399	{
	400	const char cpu, mmu, *fpu;
	401	unsigned long clockfreq, clockfactor;
	402
	403	#define LOOP_CYCLES_68020 (8)
	404	#define LOOP_CYCLES_68030 (8)
	405	#define LOOP_CYCLES_68040 (3)
	406	#define LOOP_CYCLES_68060 (1)
060632ad	407	#define LOOP_CYCLES_COLDFIRE (2)
66d857b0 GU	408
	409	if (CPU_IS_020) {
	410	cpu = "68020";
	411	clockfactor = LOOP_CYCLES_68020;
	412	} else if (CPU_IS_030) {
	413	cpu = "68030";
	414	clockfactor = LOOP_CYCLES_68030;
	415	} else if (CPU_IS_040) {
	416	cpu = "68040";
	417	clockfactor = LOOP_CYCLES_68040;
	418	} else if (CPU_IS_060) {
	419	cpu = "68060";
	420	clockfactor = LOOP_CYCLES_68060;
060632ad GU	421	} else if (CPU_IS_COLDFIRE) {
	422	cpu = "ColdFire";
	423	clockfactor = LOOP_CYCLES_COLDFIRE;
66d857b0 GU	424	} else {
	425	cpu = "680x0";
	426	clockfactor = 0;
	427	}
	428
	429	#ifdef CONFIG_M68KFPU_EMU_ONLY
	430	fpu = "none(soft float)";
	431	#else
	432	if (m68k_fputype & FPU_68881)
	433	fpu = "68881";
	434	else if (m68k_fputype & FPU_68882)
	435	fpu = "68882";
	436	else if (m68k_fputype & FPU_68040)
	437	fpu = "68040";
	438	else if (m68k_fputype & FPU_68060)
	439	fpu = "68060";
	440	else if (m68k_fputype & FPU_SUNFPA)
	441	fpu = "Sun FPA";
060632ad GU	442	else if (m68k_fputype & FPU_COLDFIRE)
060632ad GU	443	fpu = "ColdFire";
66d857b0 GU	444	else
	445	fpu = "none";
	446	#endif
	447
	448	if (m68k_mmutype & MMU_68851)
	449	mmu = "68851";
	450	else if (m68k_mmutype & MMU_68030)
	451	mmu = "68030";
	452	else if (m68k_mmutype & MMU_68040)
	453	mmu = "68040";
	454	else if (m68k_mmutype & MMU_68060)
	455	mmu = "68060";
	456	else if (m68k_mmutype & MMU_SUN3)
	457	mmu = "Sun-3";
	458	else if (m68k_mmutype & MMU_APOLLO)
	459	mmu = "Apollo";
060632ad GU	460	else if (m68k_mmutype & MMU_COLDFIRE)
060632ad GU	461	mmu = "ColdFire";
66d857b0 GU	462	else
	463	mmu = "unknown";
	464
	465	clockfreq = loops_per_jiffy * HZ * clockfactor;
	466
	467	seq_printf(m, "CPU:\t\t%s\n"
	468	"MMU:\t\t%s\n"
	469	"FPU:\t\t%s\n"
	470	"Clocking:\t%lu.%1luMHz\n"
	471	"BogoMips:\t%lu.%02lu\n"
	472	"Calibration:\t%lu loops\n",
	473	cpu, mmu, fpu,
	474	clockfreq/1000000,(clockfreq/100000)%10,
	475	loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
	476	loops_per_jiffy);
	477	return 0;
	478	}
	479
	480	static void c_start(struct seq_file m, loff_t *pos)
	481	{
	482	return pos < 1 ? (void )1 : NULL;
	483	}
	484	static void c_next(struct seq_file m, void v, loff_t pos)
	485	{
	486	++*pos;
	487	return NULL;
	488	}
	489	static void c_stop(struct seq_file m, void v)
	490	{
	491	}
	492	const struct seq_operations cpuinfo_op = {
	493	.start = c_start,
	494	.next = c_next,
	495	.stop = c_stop,
	496	.show = show_cpuinfo,
	497	};
	498
	499	#ifdef CONFIG_PROC_HARDWARE
	500	static int hardware_proc_show(struct seq_file m, void v)
	501	{
	502	char model[80];
	503	unsigned long mem;
	504	int i;
	505
	506	if (mach_get_model)
	507	mach_get_model(model);
	508	else
	509	strcpy(model, "Unknown m68k");
	510
	511	seq_printf(m, "Model:\t\t%s\n", model);
	512	for (mem = 0, i = 0; i < m68k_num_memory; i++)
	513	mem += m68k_memory[i].size;
	514	seq_printf(m, "System Memory:\t%ldK\n", mem >> 10);
	515
	516	if (mach_get_hardware_list)
	517	mach_get_hardware_list(m);
	518
	519	return 0;
	520	}
	521
66d857b0 GU	522	static int __init proc_hardware_init(void)
66d857b0 GU	523	{
3f3942ac	524	proc_create_single("hardware", 0, NULL, hardware_proc_show);
66d857b0 GU	525	return 0;
	526	}
	527	module_init(proc_hardware_init);
	528	#endif
	529
	530	void check_bugs(void)
	531	{
2a744007	532	#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU)
66d857b0	533	if (m68k_fputype == 0) {
6074a139	534	pr_emerg("*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
66d857b0	535	"WHICH IS REQUIRED BY LINUX/M68K ***\n");
6074a139	536	pr_emerg("Upgrade your hardware or join the FPU "
66d857b0 GU	537	"emulation project\n");
	538	panic("no FPU");
	539	}
	540	#endif /* !CONFIG_M68KFPU_EMU */
	541	}
	542
	543	#ifdef CONFIG_ADB
	544	static int __init adb_probe_sync_enable (char *str) {
	545	extern int __adb_probe_sync;
	546	__adb_probe_sync = 1;
	547	return 1;
	548	}
	549
	550	__setup("adb_sync", adb_probe_sync_enable);
	551	#endif /* CONFIG_ADB */