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/*

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

 *

 *  Copyright (C) 1995  Linus Torvalds

 *  Copyright (C) 1995  Ralf Baechle

 */

#include <linux/config.h>

#include <linux/delay.h>

#include <linux/errno.h>

#include <linux/sched.h>

#include <linux/kernel.h>

#include <linux/mm.h>

#include <linux/stddef.h>

#include <linux/string.h>

#include <linux/unistd.h>

#include <linux/ptrace.h>

#include <linux/malloc.h>

#include <linux/ldt.h>

#include <linux/user.h>

#include <linux/a.out.h>

#include <linux/tty.h>

#include <asm/asm.h>

#include <asm/bootinfo.h>

#include <asm/vector.h>

#include <asm/segment.h>

#include <asm/stackframe.h>

#include <asm/system.h>

/*

 * How to handle the machine's features

 */

struct feature *feature;

#ifdef CONFIG_ACER_PICA_61

void acer_pica_61_handle_int(void);

/*

 * How to access the floppy controller's ports

 */

unsigned char jazz_fd_inb(unsigned int port);

void jazz_fd_outb(unsigned char value, unsigned int port);

/*

 * How to access the floppy DMA functions.

 */

void jazz_fd_enable_dma(void);

void jazz_fd_disable_dma(void);

int jazz_fd_request_dma(void);

void jazz_fd_free_dma(void);

void jazz_fd_clear_dma_ff(void);

void jazz_fd_set_dma_mode(char mode);

void jazz_fd_set_dma_addr(unsigned int a);

void jazz_fd_set_dma_count(unsigned int count);

int jazz_fd_get_dma_residue(void);

void jazz_fd_enable_irq(void);

void jazz_fd_disable_irq(void);

void jazz_fd_cacheflush(unsigned char *addr, unsigned int size);

/*

 * How to access the RTC functions.

 */

unsigned char jazz_rtc_read_data(void);

void jazz_rtc_write_data(unsigned char data);

struct feature acer_pica_61_feature = {

        acer_pica_61_handle_int,

        /*

         * How to access the floppy controller's ports

         */

        jazz_fd_inb,

        jazz_fd_outb,

        /*

         * How to access the floppy DMA functions.

         */

        jazz_fd_enable_dma,

        jazz_fd_disable_dma,

        jazz_fd_request_dma,

        jazz_fd_free_dma,

        jazz_fd_clear_dma_ff,

        jazz_fd_set_dma_mode,

        jazz_fd_set_dma_addr,

        jazz_fd_set_dma_count,

        jazz_fd_get_dma_residue,

        jazz_fd_enable_irq,

        jazz_fd_disable_irq,

        jazz_fd_cacheflush,

        /*

         * How to access the RTC functions.

         */

        jazz_rtc_read_data,

        jazz_rtc_write_data

};

#endif

#ifdef CONFIG_DECSTATION

void decstation_handle_handle_int(void);

void isa_outb(unsigned char value, unsigned int port);

unsigned char isa_inb(unsigned int port);

struct feature decstation_feature = {

        decstation_handle_handle_int,

        isa_inb /* Dummy - dunno how to handle this yet */

        isa_outb, /* Dummy - dunno how to handle this yet */

};

#endif

#ifdef CONFIG_DESKSTATION_RPC44

void deskstation_rpc44_handle_int(void);

void isa_outb(unsigned char value, unsigned int port);

unsigned char isa_inb(unsigned int port);

struct feature deskstation_rpc44_feature = {

        deskstation_rpc44_handle_int,

        isa_inb

        isa_outb,

};

#endif

#ifdef CONFIG_DESKSTATION_TYNE

void deskstation_tyne_handle_int(void);

void isa_outb(unsigned char value, unsigned int port);

unsigned char isa_inb(unsigned int port);

struct feature deskstation_tyne_feature = {

        deskstation_tyne_handle_int,

        isa_inb,

        isa_outb,

};

#endif

#ifdef CONFIG_MIPS_MAGNUM_4000

void mips_magnum_4000_handle_int(void);

/*

 * How to access the floppy controller's ports

 */

unsigned char jazz_fd_inb(unsigned int port);

void jazz_fd_outb(unsigned char value, unsigned int port);

/*

 * How to access the floppy DMA functions.

 */

void jazz_fd_enable_dma(void);

void jazz_fd_disable_dma(void);

int jazz_fd_request_dma(void);

void jazz_fd_free_dma(void);

void jazz_fd_clear_dma_ff(void);

void jazz_fd_set_dma_mode(char mode);

void jazz_fd_set_dma_addr(unsigned int a);

void jazz_fd_set_dma_count(unsigned int count);

int jazz_fd_get_dma_residue(void);

void jazz_fd_enable_irq(void);

void jazz_fd_disable_irq(void);

void jazz_fd_cacheflush(unsigned char *addr, unsigned int size);

/*

 * How to access the RTC functions.

 */

unsigned char jazz_rtc_read_data(void);

void jazz_rtc_write_data(unsigned char data);

struct feature mips_magnum_4000_feature = {

        mips_magnum_4000_handle_int,

        /*

         * How to access the floppy controller's ports

         */

        jazz_fd_inb,

        jazz_fd_outb,

        /*

         * How to access the floppy DMA functions.

         */

        jazz_fd_enable_dma,

        jazz_fd_disable_dma,

        jazz_fd_request_dma,

        jazz_fd_free_dma,

        jazz_fd_clear_dma_ff,

        jazz_fd_set_dma_mode,

        jazz_fd_set_dma_addr,

        jazz_fd_set_dma_count,

        jazz_fd_get_dma_residue,

        jazz_fd_enable_irq,

        jazz_fd_disable_irq,

        jazz_fd_cacheflush,

        /*

         * How to access the RTC functions.

         */

        jazz_rtc_read_data,

        jazz_rtc_write_data

};

#endif

/*

 * Tell us the machine setup..

 */

char wait_available;            /* set if the "wait" instruction available */

/*

 * Bus types ..

 */

int EISA_bus = 0;

/*

 * Setup options

 */

struct drive_info_struct drive_info;

struct screen_info screen_info = SCREEN_INFO;

unsigned char aux_device_present;

extern int ramdisk_size;

extern int root_mountflags;

extern int _end;

extern char empty_zero_page[PAGE_SIZE];

/*

 * Initialise this structure so that it will be placed in the

 * .data section of the object file

 */

struct bootinfo boot_info = BOOT_INFO;

/*

 * This is set up by the setup-routine at boot-time

 */

#define PARAM   empty_zero_page

#if 0

#define ORIG_ROOT_DEV (*(unsigned short *) (PARAM+0x1FC))

#define AUX_DEVICE_INFO (*(unsigned char *) (PARAM+0x1FF))

#endif

static char command_line[CL_SIZE] = { 0, };

       char saved_command_line[CL_SIZE];

#if 0

/*

 * Code for easy access to new style bootinfo

 *

 * Parameter:  tag      -- taglist entry

 *

 * returns  :  (tag *) -- pointer to taglist entry, NULL for not found

 */

tag *

bi_TagFind(enum bi_tag tag)

{

        /* TBD */

        return 0;

}

/*

 * Only for taglist creators (bootloaders)

 *

 * Parameter:  tag       -- (enum bi_tag) taglist entry

 *

 * returns  :  1         -- success

 *             0         -- failure

 */

int

bi_TagAdd(enum bi_tag tag, unsigned long size, void *tagdata)

{

        /* TBD */

        return 0;

}

#endif /* 0 */

void setup_arch(char **cmdline_p,

        unsigned long * memory_start_p, unsigned long * memory_end_p)

{

        unsigned long memory_start, memory_end;

        switch(boot_info.machtype)

        {

#ifdef CONFIG_ACER_PICA_61

        case MACH_ACER_PICA_61:

                feature = &acer_pica_61_feature;

                break;

#endif

#ifdef CONFIG_DECSTATION

        case MACH_DECSTATION:

                feature = &decstation_feature;

                break;

#endif

#ifdef CONFIG_DESKSTATION_RPC

        case MACH_DESKSTATION_RPC:

                feature = &deskstation_rpc44_feature;

                break;

#endif

#ifdef CONFIG_DESKSTATION_TYNE

        case MACH_DESKSTATION_TYNE:

                feature = &deskstation_tyne_feature;

                break;

#endif

#ifdef CONFIG_MIPS_MAGNUM_4000

        case MACH_MIPS_MAGNUM_4000:

                feature = &mips_magnum_4000_feature;

                break;

#endif

        default:

                panic("Unsupported architecture");

        }

#if 0

        ROOT_DEV = to_kdev_t(ORIG_ROOT_DEV);

#else

#ifdef CONFIG_BLK_DEV_FD

        ROOT_DEV = to_kdev_t(0x021c);   /* fd0H1440 */

#else

        ROOT_DEV = to_kdev_t(0x0101);   /* ram */

#endif

/*      ROOT_DEV = to_kdev_t(0x00ff); */        /* NFS */

#endif

        memcpy(&drive_info, &boot_info.drive_info, sizeof(drive_info));

#if 0

        aux_device_present = AUX_DEVICE_INFO;

#endif

        memory_end = boot_info.memupper;

        memory_end &= PAGE_MASK;

        ramdisk_size = boot_info.ramdisk_size;

        if (boot_info.mount_root_rdonly)

                root_mountflags |= MS_RDONLY;

        memory_start = (unsigned long) &_end;

        memory_start += (ramdisk_size << 10);

        memcpy(saved_command_line, command_line, CL_SIZE);

        saved_command_line[CL_SIZE-1] = '\0';

        *cmdline_p = command_line;

        *memory_start_p = memory_start;

        *memory_end_p = memory_end;

#if 0

        /*

         * Check that struct pt_regs is defined properly

         * (Should be optimized away, but gcc 2.6.3 is too bad..)

         */

        if (FR_SIZE != sizeof(struct pt_regs) ||

            FR_SIZE & 7)

        {

                panic("Check_definition_of_struct_pt_regs\n");

        }

#endif

}

#ifdef CONFIG_PROC_FS

/*

 * BUFFER is PAGE_SIZE bytes long.

 */

int get_cpuinfo(char *buffer)

{

        const char *cpu_name[] = CPU_NAMES;

        const char *mach_name[] = MACH_NAMES;

        return sprintf(buffer,

                       "cpu\t\t\t: MIPS\n"

                       "cpu model\t\t: %s\n"

                       "system type\t\t: %s\n"

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

                       cpu_name[boot_info.cputype < CPU_LAST ? boot_info.cputype : CPU_UNKNOWN],

                       mach_name[boot_info.machtype < CPU_LAST ? boot_info.machtype : CPU_UNKNOWN],

                       loops_per_sec / 500000, (loops_per_sec / 5000) % 100);

}

#endif /* CONFIG_PROC_FS */