[linux-2.6-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/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_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:
		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
	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
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>
	23	#include <linux/bootmem.h>
	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);
	90	EXPORT_SYMBOL(mach_hwclk);
	91	int (*mach_set_clock_mmss) (unsigned long);
	92	unsigned int (*mach_get_ss)(void);
	93	int (mach_get_rtc_pll)(struct rtc_pll_info );
	94	int (mach_set_rtc_pll)(struct rtc_pll_info );
	95	EXPORT_SYMBOL(mach_get_ss);
	96	EXPORT_SYMBOL(mach_get_rtc_pll);
	97	EXPORT_SYMBOL(mach_set_rtc_pll);
	98	void (*mach_reset)( void );
	99	void (*mach_halt)( void );
	100	void (*mach_power_off)( void );
	101	long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */
	102	#ifdef CONFIG_HEARTBEAT
	103	void (*mach_heartbeat) (int);
	104	EXPORT_SYMBOL(mach_heartbeat);
	105	#endif
	106	#ifdef CONFIG_M68K_L2_CACHE
	107	void (*mach_l2_flush) (int);
	108	#endif
66d857b0 GU	109	#if defined(CONFIG_ISA) && defined(MULTI_ISA)
	110	int isa_type;
	111	int isa_sex;
	112	EXPORT_SYMBOL(isa_type);
	113	EXPORT_SYMBOL(isa_sex);
	114	#endif
	115
	116	extern int amiga_parse_bootinfo(const struct bi_record *);
	117	extern int atari_parse_bootinfo(const struct bi_record *);
	118	extern int mac_parse_bootinfo(const struct bi_record *);
	119	extern int q40_parse_bootinfo(const struct bi_record *);
	120	extern int bvme6000_parse_bootinfo(const struct bi_record *);
	121	extern int mvme16x_parse_bootinfo(const struct bi_record *);
	122	extern int mvme147_parse_bootinfo(const struct bi_record *);
	123	extern int hp300_parse_bootinfo(const struct bi_record *);
	124	extern int apollo_parse_bootinfo(const struct bi_record *);
	125
	126	extern void config_amiga(void);
	127	extern void config_atari(void);
	128	extern void config_mac(void);
	129	extern void config_sun3(void);
	130	extern void config_apollo(void);
	131	extern void config_mvme147(void);
	132	extern void config_mvme16x(void);
	133	extern void config_bvme6000(void);
	134	extern void config_hp300(void);
	135	extern void config_q40(void);
	136	extern void config_sun3x(void);
	137
	138	#define MASK_256K 0xfffc0000
	139
	140	extern void paging_init(void);
	141
	142	static void __init m68k_parse_bootinfo(const struct bi_record *record)
	143	{
abe48101 GU	144	uint16_t tag;
abe48101 GU	145
7bc1e4d8 GU	146	save_bootinfo(record);
7bc1e4d8 GU	147
abe48101	148	while ((tag = be16_to_cpu(record->tag)) != BI_LAST) {
66d857b0	149	int unknown = 0;
abe48101 GU	150	const void *data = record->data;
abe48101 GU	151	uint16_t size = be16_to_cpu(record->size);
66d857b0	152
abe48101	153	switch (tag) {
66d857b0 GU	154	case BI_MACHTYPE:
	155	case BI_CPUTYPE:
	156	case BI_FPUTYPE:
	157	case BI_MMUTYPE:
	158	/* Already set up by head.S */
	159	break;
	160
	161	case BI_MEMCHUNK:
	162	if (m68k_num_memory < NUM_MEMINFO) {
abe48101 GU	163	const struct mem_info *m = data;
	164	m68k_memory[m68k_num_memory].addr =
	165	be32_to_cpu(m->addr);
	166	m68k_memory[m68k_num_memory].size =
	167	be32_to_cpu(m->size);
66d857b0 GU	168	m68k_num_memory++;
66d857b0 GU	169	} else
6074a139 GU	170	pr_warn("%s: too many memory chunks\n",
6074a139 GU	171	__func__);
66d857b0 GU	172	break;
	173
	174	case BI_RAMDISK:
abe48101 GU	175	{
	176	const struct mem_info *m = data;
	177	m68k_ramdisk.addr = be32_to_cpu(m->addr);
	178	m68k_ramdisk.size = be32_to_cpu(m->size);
	179	}
66d857b0 GU	180	break;
	181
	182	case BI_COMMAND_LINE:
abe48101	183	strlcpy(m68k_command_line, data,
66d857b0 GU	184	sizeof(m68k_command_line));
	185	break;
	186
	187	default:
	188	if (MACH_IS_AMIGA)
	189	unknown = amiga_parse_bootinfo(record);
	190	else if (MACH_IS_ATARI)
	191	unknown = atari_parse_bootinfo(record);
	192	else if (MACH_IS_MAC)
	193	unknown = mac_parse_bootinfo(record);
	194	else if (MACH_IS_Q40)
	195	unknown = q40_parse_bootinfo(record);
	196	else if (MACH_IS_BVME6000)
	197	unknown = bvme6000_parse_bootinfo(record);
	198	else if (MACH_IS_MVME16x)
	199	unknown = mvme16x_parse_bootinfo(record);
	200	else if (MACH_IS_MVME147)
	201	unknown = mvme147_parse_bootinfo(record);
	202	else if (MACH_IS_HP300)
	203	unknown = hp300_parse_bootinfo(record);
	204	else if (MACH_IS_APOLLO)
	205	unknown = apollo_parse_bootinfo(record);
	206	else
	207	unknown = 1;
	208	}
	209	if (unknown)
6074a139	210	pr_warn("%s: unknown tag 0x%04x ignored\n", __func__,
abe48101 GU	211	tag);
abe48101 GU	212	record = (struct bi_record *)((unsigned long)record + size);
66d857b0 GU	213	}
	214
	215	m68k_realnum_memory = m68k_num_memory;
	216	#ifdef CONFIG_SINGLE_MEMORY_CHUNK
	217	if (m68k_num_memory > 1) {
6074a139 GU	218	pr_warn("%s: ignoring last %i chunks of physical memory\n",
6074a139 GU	219	__func__, (m68k_num_memory - 1));
66d857b0 GU	220	m68k_num_memory = 1;
	221	}
	222	#endif
	223	}
	224
	225	void __init setup_arch(char **cmdline_p)
	226	{
b2cb9241	227	#ifndef CONFIG_SUN3
66d857b0	228	int i;
b2cb9241	229	#endif
66d857b0	230
29a20203	231	/* The bootinfo is located right after the kernel */
37314540 GU	232	if (!CPU_IS_COLDFIRE)
37314540 GU	233	m68k_parse_bootinfo((const struct bi_record *)_end);
66d857b0 GU	234
	235	if (CPU_IS_040)
	236	m68k_is040or060 = 4;
	237	else if (CPU_IS_060)
	238	m68k_is040or060 = 6;
	239
	240	/* FIXME: m68k_fputype is passed in by Penguin booter, which can
	241	* be confused by software FPU emulation. BEWARE.
	242	* We should really do our own FPU check at startup.
	243	* [what do we do with buggy 68LC040s? if we have problems
	244	* with them, we should add a test to check_bugs() below] */
6d3ec805	245	#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU_ONLY)
66d857b0	246	/* clear the fpu if we have one */
0a2796da	247	if (m68k_fputype & (FPU_68881\|FPU_68882\|FPU_68040\|FPU_68060\|FPU_COLDFIRE)) {
66d857b0 GU	248	volatile int zero = 0;
	249	asm volatile ("frestore %0" : : "m" (zero));
	250	}
	251	#endif
	252
	253	if (CPU_IS_060) {
	254	u32 pcr;
	255
	256	asm (".chip 68060; movec %%pcr,%0; .chip 68k"
	257	: "=d" (pcr));
	258	if (((pcr >> 8) & 0xff) <= 5) {
6074a139	259	pr_warn("Enabling workaround for errata I14\n");
66d857b0 GU	260	asm (".chip 68060; movec %0,%%pcr; .chip 68k"
	261	: : "d" (pcr \| 0x20));
	262	}
	263	}
	264
	265	init_mm.start_code = PAGE_OFFSET;
	266	init_mm.end_code = (unsigned long)_etext;
	267	init_mm.end_data = (unsigned long)_edata;
	268	init_mm.brk = (unsigned long)_end;
	269
d1db9120 GU	270	#if defined(CONFIG_BOOTPARAM)
	271	strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);
	272	m68k_command_line[CL_SIZE - 1] = 0;
	273	#endif /* CONFIG_BOOTPARAM */
aa5ac789	274	process_uboot_commandline(&m68k_command_line[0], CL_SIZE);
66d857b0 GU	275	*cmdline_p = m68k_command_line;
	276	memcpy(boot_command_line, *cmdline_p, CL_SIZE);
	277
	278	parse_early_param();
	279
	280	#ifdef CONFIG_DUMMY_CONSOLE
	281	conswitchp = &dummy_con;
	282	#endif
	283
	284	switch (m68k_machtype) {
	285	#ifdef CONFIG_AMIGA
	286	case MACH_AMIGA:
	287	config_amiga();
	288	break;
	289	#endif
	290	#ifdef CONFIG_ATARI
	291	case MACH_ATARI:
	292	config_atari();
	293	break;
	294	#endif
	295	#ifdef CONFIG_MAC
	296	case MACH_MAC:
	297	config_mac();
	298	break;
	299	#endif
	300	#ifdef CONFIG_SUN3
	301	case MACH_SUN3:
	302	config_sun3();
	303	break;
	304	#endif
	305	#ifdef CONFIG_APOLLO
	306	case MACH_APOLLO:
	307	config_apollo();
	308	break;
	309	#endif
	310	#ifdef CONFIG_MVME147
	311	case MACH_MVME147:
	312	config_mvme147();
	313	break;
	314	#endif
	315	#ifdef CONFIG_MVME16x
	316	case MACH_MVME16x:
	317	config_mvme16x();
	318	break;
	319	#endif
	320	#ifdef CONFIG_BVME6000
	321	case MACH_BVME6000:
	322	config_bvme6000();
	323	break;
	324	#endif
	325	#ifdef CONFIG_HP300
	326	case MACH_HP300:
	327	config_hp300();
	328	break;
	329	#endif
	330	#ifdef CONFIG_Q40
	331	case MACH_Q40:
	332	config_q40();
	333	break;
	334	#endif
	335	#ifdef CONFIG_SUN3X
	336	case MACH_SUN3X:
	337	config_sun3x();
	338	break;
37314540 GU	339	#endif
	340	#ifdef CONFIG_COLDFIRE
	341	case MACH_M54XX:
81d33350	342	case MACH_M5441X:
34fa9b21 GU	343	cf_bootmem_alloc();
34fa9b21 GU	344	cf_mmu_context_init();
37314540 GU	345	config_BSP(NULL, 0);
37314540 GU	346	break;
66d857b0 GU	347	#endif
	348	default:
	349	panic("No configuration setup");
	350	}
	351
7a15dd5c GU	352	paging_init();
7a15dd5c GU	353
66d857b0 GU	354	#ifdef CONFIG_NATFEAT
	355	nf_init();
	356	#endif
	357
66d857b0 GU	358	#ifndef CONFIG_SUN3
	359	for (i = 1; i < m68k_num_memory; i++)
	360	free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr,
	361	m68k_memory[i].size);
	362	#ifdef CONFIG_BLK_DEV_INITRD
	363	if (m68k_ramdisk.size) {
	364	reserve_bootmem_node(__virt_to_node(phys_to_virt(m68k_ramdisk.addr)),
	365	m68k_ramdisk.addr, m68k_ramdisk.size,
	366	BOOTMEM_DEFAULT);
	367	initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
	368	initrd_end = initrd_start + m68k_ramdisk.size;
6074a139	369	pr_info("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
66d857b0 GU	370	}
	371	#endif
	372
	373	#ifdef CONFIG_ATARI
	374	if (MACH_IS_ATARI)
	375	atari_stram_reserve_pages((void *)availmem);
	376	#endif
	377	#ifdef CONFIG_SUN3X
	378	if (MACH_IS_SUN3X) {
	379	dvma_init();
	380	}
	381	#endif
	382
	383	#endif /* !CONFIG_SUN3 */
	384
	385	/* set ISA defs early as possible */
	386	#if defined(CONFIG_ISA) && defined(MULTI_ISA)
	387	if (MACH_IS_Q40) {
	388	isa_type = ISA_TYPE_Q40;
	389	isa_sex = 0;
	390	}
	391	#ifdef CONFIG_AMIGA_PCMCIA
	392	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
	393	isa_type = ISA_TYPE_AG;
	394	isa_sex = 1;
	395	}
	396	#endif
84b16b7b MS	397	#ifdef CONFIG_ATARI_ROM_ISA
	398	if (MACH_IS_ATARI) {
	399	isa_type = ISA_TYPE_ENEC;
	400	isa_sex = 0;
	401	}
	402	#endif
66d857b0 GU	403	#endif
	404	}
	405
	406	static int show_cpuinfo(struct seq_file m, void v)
	407	{
	408	const char cpu, mmu, *fpu;
	409	unsigned long clockfreq, clockfactor;
	410
	411	#define LOOP_CYCLES_68020 (8)
	412	#define LOOP_CYCLES_68030 (8)
	413	#define LOOP_CYCLES_68040 (3)
	414	#define LOOP_CYCLES_68060 (1)
060632ad	415	#define LOOP_CYCLES_COLDFIRE (2)
66d857b0 GU	416
	417	if (CPU_IS_020) {
	418	cpu = "68020";
	419	clockfactor = LOOP_CYCLES_68020;
	420	} else if (CPU_IS_030) {
	421	cpu = "68030";
	422	clockfactor = LOOP_CYCLES_68030;
	423	} else if (CPU_IS_040) {
	424	cpu = "68040";
	425	clockfactor = LOOP_CYCLES_68040;
	426	} else if (CPU_IS_060) {
	427	cpu = "68060";
	428	clockfactor = LOOP_CYCLES_68060;
060632ad GU	429	} else if (CPU_IS_COLDFIRE) {
	430	cpu = "ColdFire";
	431	clockfactor = LOOP_CYCLES_COLDFIRE;
66d857b0 GU	432	} else {
	433	cpu = "680x0";
	434	clockfactor = 0;
	435	}
	436
	437	#ifdef CONFIG_M68KFPU_EMU_ONLY
	438	fpu = "none(soft float)";
	439	#else
	440	if (m68k_fputype & FPU_68881)
	441	fpu = "68881";
	442	else if (m68k_fputype & FPU_68882)
	443	fpu = "68882";
	444	else if (m68k_fputype & FPU_68040)
	445	fpu = "68040";
	446	else if (m68k_fputype & FPU_68060)
	447	fpu = "68060";
	448	else if (m68k_fputype & FPU_SUNFPA)
	449	fpu = "Sun FPA";
060632ad GU	450	else if (m68k_fputype & FPU_COLDFIRE)
060632ad GU	451	fpu = "ColdFire";
66d857b0 GU	452	else
	453	fpu = "none";
	454	#endif
	455
	456	if (m68k_mmutype & MMU_68851)
	457	mmu = "68851";
	458	else if (m68k_mmutype & MMU_68030)
	459	mmu = "68030";
	460	else if (m68k_mmutype & MMU_68040)
	461	mmu = "68040";
	462	else if (m68k_mmutype & MMU_68060)
	463	mmu = "68060";
	464	else if (m68k_mmutype & MMU_SUN3)
	465	mmu = "Sun-3";
	466	else if (m68k_mmutype & MMU_APOLLO)
	467	mmu = "Apollo";
060632ad GU	468	else if (m68k_mmutype & MMU_COLDFIRE)
060632ad GU	469	mmu = "ColdFire";
66d857b0 GU	470	else
	471	mmu = "unknown";
	472
	473	clockfreq = loops_per_jiffy * HZ * clockfactor;
	474
	475	seq_printf(m, "CPU:\t\t%s\n"
	476	"MMU:\t\t%s\n"
	477	"FPU:\t\t%s\n"
	478	"Clocking:\t%lu.%1luMHz\n"
	479	"BogoMips:\t%lu.%02lu\n"
	480	"Calibration:\t%lu loops\n",
	481	cpu, mmu, fpu,
	482	clockfreq/1000000,(clockfreq/100000)%10,
	483	loops_per_jiffy/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
	484	loops_per_jiffy);
	485	return 0;
	486	}
	487
	488	static void c_start(struct seq_file m, loff_t *pos)
	489	{
	490	return pos < 1 ? (void )1 : NULL;
	491	}
	492	static void c_next(struct seq_file m, void v, loff_t pos)
	493	{
	494	++*pos;
	495	return NULL;
	496	}
	497	static void c_stop(struct seq_file m, void v)
	498	{
	499	}
	500	const struct seq_operations cpuinfo_op = {
	501	.start = c_start,
	502	.next = c_next,
	503	.stop = c_stop,
	504	.show = show_cpuinfo,
	505	};
	506
	507	#ifdef CONFIG_PROC_HARDWARE
	508	static int hardware_proc_show(struct seq_file m, void v)
	509	{
	510	char model[80];
	511	unsigned long mem;
	512	int i;
	513
	514	if (mach_get_model)
	515	mach_get_model(model);
	516	else
	517	strcpy(model, "Unknown m68k");
	518
	519	seq_printf(m, "Model:\t\t%s\n", model);
	520	for (mem = 0, i = 0; i < m68k_num_memory; i++)
	521	mem += m68k_memory[i].size;
	522	seq_printf(m, "System Memory:\t%ldK\n", mem >> 10);
	523
	524	if (mach_get_hardware_list)
	525	mach_get_hardware_list(m);
	526
	527	return 0;
	528	}
	529
	530	static int hardware_proc_open(struct inode inode, struct file file)
	531	{
	532	return single_open(file, hardware_proc_show, NULL);
	533	}
534
535	static const struct file_operations hardware_proc_fops = {
536	.open = hardware_proc_open,
537	.read = seq_read,
538	.llseek = seq_lseek,
539	.release = single_release,
540	};
541
542	static int __init proc_hardware_init(void)
543	{
544	proc_create("hardware", 0, NULL, &hardware_proc_fops);
545	return 0;
546	}
547	module_init(proc_hardware_init);
548	#endif
549
550	void check_bugs(void)
551	{
2a744007	552	#if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU)
66d857b0	553	if (m68k_fputype == 0) {
6074a139	554	pr_emerg("*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
66d857b0	555	"WHICH IS REQUIRED BY LINUX/M68K ***\n");
6074a139	556	pr_emerg("Upgrade your hardware or join the FPU "
66d857b0 GU	557	"emulation project\n");
	558	panic("no FPU");
	559	}
	560	#endif /* !CONFIG_M68KFPU_EMU */
	561	}
	562
	563	#ifdef CONFIG_ADB
	564	static int __init adb_probe_sync_enable (char *str) {
	565	extern int __adb_probe_sync;
	566	__adb_probe_sync = 1;
	567	return 1;
	568	}
	569
	570	__setup("adb_sync", adb_probe_sync_enable);
	571	#endif /* CONFIG_ADB */