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/*

 *  linux/arch/m68k/kernel/setup.c

 *

 *  Copyright (C) 1995  Hamish Macdonald

 */

/*

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

 */

#include <linux/config.h>

#include <linux/kernel.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 <asm/bootinfo.h>

#include <asm/irq.h>

#include <asm/machdep.h>

#include <asm/amigatypes.h>

#include <asm/amigahw.h>

#ifdef CONFIG_BLK_DEV_INITRD

#include <linux/blk.h>

#include <asm/pgtable.h>

#endif

struct bootinfo boot_info = {0,};

int bisize = sizeof boot_info;

int m68k_is040or060 = 0;

char m68k_debug_device[6] = "";

extern int end;

extern unsigned long availmem;

char saved_command_line[CL_SIZE];

/* setup some dummy routines */

static void dummy_waitbut(void)

{

}

void (*mach_sched_init) (isrfunc);

int (*mach_keyb_init) (void);

int (*mach_kbdrate) (struct kbd_repeat *) = NULL;

void (*mach_kbd_leds) (unsigned int) = NULL;

void (*mach_init_INTS) (void);

int (*mach_add_isr) (unsigned long, isrfunc, int, void *, char *);

int (*mach_remove_isr) (unsigned long, isrfunc, void *);

void (*mach_process_int) (int, struct pt_regs *) = NULL;

void (*mach_enable_irq) (unsigned) = NULL;

void (*mach_disable_irq) (unsigned) = NULL;

int (*mach_get_irq_list) (char *, int) = NULL;

unsigned long (*mach_gettimeoffset) (void);

void (*mach_gettod) (int*, int*, int*, int*, int*, int*);

int (*mach_hwclk) (int, struct hwclk_time*) = NULL;

int (*mach_set_clock_mmss) (unsigned long) = NULL;

void (*mach_mksound)( unsigned int count, unsigned int ticks );

void (*mach_reset)( void );

void (*waitbut)(void) = dummy_waitbut;

struct fb_info *(*mach_fb_init)(long *);

long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */

void (*mach_debug_init)(void);

void (*mach_video_setup) (char *, int *);

#ifdef CONFIG_BLK_DEV_FD

int (*mach_floppy_init) (void) = NULL;

void (*mach_floppy_setup) (char *, int *) = NULL;

void (*mach_floppy_eject) (void) = NULL;

#endif

extern void config_amiga(void);

extern void config_atari(void);

extern void config_mac(void);

extern void register_console(void (*proc)(const char *));

extern void ami_serial_print (const char *str);

extern void ata_serial_print (const char *str);

extern void (*kd_mksound)(unsigned int, unsigned int);

extern void amiga_get_model(char *model);

extern void atari_get_model(char *model);

extern void mac_get_model(char *model);

extern int amiga_get_hardware_list(char *buffer);

extern int atari_get_hardware_list(char *buffer);

extern int mac_get_hardware_list(char *buffer);

#define MASK_256K 0xfffc0000

void setup_arch(char **cmdline_p,

                unsigned long * memory_start_p, unsigned long * memory_end_p)

{

        unsigned long memory_start, memory_end;

        extern int _etext, _edata, _end;

        int i;

        char *p, *q;

#ifdef CONFIG_AMIGA

        if (MACH_IS_AMIGA)

          register_console (ami_serial_print);

#endif

#ifdef CONFIG_ATARI

        if (MACH_IS_ATARI)

          register_console (ata_serial_print);

#endif

        if (boot_info.cputype & CPU_68040)

                m68k_is040or060 = 4;

        else if (boot_info.cputype & CPU_68060)

                m68k_is040or060 = 6;

        /* clear the fpu if we have one */

        if (boot_info.cputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) {

                volatile int zero = 0;

                asm __volatile__ ("frestore %0" : : "m" (zero));

        }

        memory_start = availmem;

        memory_end = 0;

        for (i = 0; i < boot_info.num_memory; i++)

                memory_end += boot_info.memory[i].size & MASK_256K;

        init_task.mm->start_code = 0;

        init_task.mm->end_code = (unsigned long) &_etext;

        init_task.mm->end_data = (unsigned long) &_edata;

        init_task.mm->brk = (unsigned long) &_end;

        *cmdline_p = boot_info.command_line;

        memcpy(saved_command_line, *cmdline_p, CL_SIZE);

        /* Parse the command line for arch-specific options.

         * For the m68k, this is currently only "debug=xxx" to enable printing

         * certain kernel messages to some machine-specific device.

         */

        for( p = *cmdline_p; p && *p; ) {

            i = 0;

            if (!strncmp( p, "debug=", 6 )) {

                strncpy( m68k_debug_device, p+6, sizeof(m68k_debug_device)-1 );

                m68k_debug_device[sizeof(m68k_debug_device)-1] = 0;

                if ((q = strchr( m68k_debug_device, ' ' ))) *q = 0;

                i = 1;

            }

            if (i) {

                /* option processed, delete it */

                if ((q = strchr( p, ' ' )))

                    strcpy( p, q+1 );

                else

                    *p = 0;

            } else {

                if ((p = strchr( p, ' ' ))) ++p;

            }

        }

        *memory_start_p = memory_start;

        *memory_end_p = memory_end;

        switch (boot_info.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

            default:

                panic ("No configuration setup");

        }

#ifdef CONFIG_BLK_DEV_INITRD

        if (boot_info.ramdisk_size) {

                initrd_start = PTOV (boot_info.ramdisk_addr);

                initrd_end = initrd_start + boot_info.ramdisk_size * 1024;

        }

#endif

}

int setkeycode(unsigned int scancode, unsigned int keycode)

{

        return -EOPNOTSUPP;

}

int getkeycode(unsigned int scancode)

{

        return -EOPNOTSUPP;

}

int get_cpuinfo(char * buffer)

{

    char *cpu, *mmu, *fpu;

    u_long clockfreq, clockfactor;

#define CLOCK_FACTOR_68020      (8046)  /*  3107016 loops/s @ 25 MHz (Sun-3) */

#define CLOCK_FACTOR_68030      (8010)  /*  3994575 loops/s @ 32 MHz */

#define CLOCK_FACTOR_68040      (3010)  /*  8305552 loops/s @ 25 MHz */

#define CLOCK_FACTOR_68060      (998)   /* 50081241 loops/s @ 50 MHz */

    if (boot_info.cputype & CPU_68020) {

        cpu = "68020";

        mmu = "68851";

        clockfactor = CLOCK_FACTOR_68020;

    } else if (boot_info.cputype & CPU_68030) {

        cpu = mmu = "68030";

        clockfactor = CLOCK_FACTOR_68030;

    } else if (boot_info.cputype & CPU_68040) {

        cpu = mmu = "68040";

        clockfactor = CLOCK_FACTOR_68040;

    } else if (boot_info.cputype & CPU_68060) {

        cpu = mmu = "68060";

        clockfactor = CLOCK_FACTOR_68060;

    } else {

        cpu = mmu = "680x0";

        clockfactor = 0;

    }

    if (boot_info.cputype & FPU_68881)

        fpu = "68881";

    else if (boot_info.cputype & FPU_68882)

        fpu = "68882";

    else if (boot_info.cputype & FPU_68040)

        fpu = "68040";

    else if (boot_info.cputype & FPU_68060)

        fpu = "68060";

    else

        fpu = "none";

    clockfreq = loops_per_sec/1000*clockfactor;

    return(sprintf(buffer, "CPU:\t\t%s\n"

                   "MMU:\t\t%s\n"

                   "FPU:\t\t%s\n"

                   "Clockspeed:\t%lu.%1luMHz\n"

                   "BogoMips:\t%lu.%02lu\n",

                   cpu, mmu, fpu, (clockfreq+50000)/1000000,

                   ((clockfreq+50000)/100000)%10, loops_per_sec/500000,

                   (loops_per_sec/5000)%100));

}

int get_hardware_list(char *buffer)

{

    int len = 0;

    char model[80];

    u_long mem;

    int i;

    switch (boot_info.machtype) {

#ifdef CONFIG_AMIGA

        case MACH_AMIGA:

            amiga_get_model(model);

            break;

#endif

#ifdef CONFIG_ATARI

        case MACH_ATARI:

            atari_get_model(model);

            break;

#endif

#ifdef CONFIG_MAC

        case MACH_MAC:

            mac_get_model(model);

            break;

#endif

        default:

            strcpy(model, "Unknown m68k");

    } /* boot_info.machtype */

    len += sprintf(buffer+len, "Model:\t\t%s\n", model);

    len += get_cpuinfo(buffer+len);

    for (mem = 0, i = 0; i < boot_info.num_memory; i++)

        mem += boot_info.memory[i].size;

    len += sprintf(buffer+len, "System Memory:\t%ldK\n", mem>>10);

    switch (boot_info.machtype) {

#ifdef CONFIG_AMIGA

        case MACH_AMIGA:

            len += amiga_get_hardware_list(buffer+len);

            break;

#endif

#ifdef CONFIG_ATARI

        case MACH_ATARI:

            len += atari_get_hardware_list(buffer+len);

            break;

#endif

#ifdef CONFIG_MAC

        case MACH_MAC:

            break;

#endif

    } /* boot_info.machtype */

    return(len);

}

#ifdef CONFIG_BLK_DEV_FD

int floppy_init(void)

{

        if (mach_floppy_init)

                return mach_floppy_init();

        else

                return 0;

}

void floppy_setup(char *str, int *ints)

{

        if (mach_floppy_setup)

                mach_floppy_setup (str, ints);

}

void floppy_eject(void)

{

        if (mach_floppy_eject)

                mach_floppy_eject();

}

#endif

unsigned long arch_kbd_init(void)

{

        return mach_keyb_init();

}

void arch_gettod(int *year, int *mon, int *day, int *hour,

                 int *min, int *sec)

{

        if (mach_gettod)

                mach_gettod(year, mon, day, hour, min, sec);

        else

                *year = *mon = *day = *hour = *min = *sec = 0;

}

void video_setup (char *options, int *ints)

{

        if (mach_video_setup)

                mach_video_setup (options, ints);

}