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/* $Id: misc.c,v 1.1 2005-12-20 09:49:32 jcastillo Exp $

 * misc.c:  Miscellaneous prom functions that don't belong

 *          anywhere else.

 *

 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)

 */

#include <linux/config.h>

#include <asm/openprom.h>

#include <asm/oplib.h>

/* Reset and reboot the machine with the command 'bcommand'. */

void

prom_reboot(char *bcommand)

{

        (*(romvec->pv_reboot))(bcommand);

        /* Never get here. */

        return;

}

/* Forth evaluate the expression contained in 'fstring'. */

void

prom_feval(char *fstring)

{

        if(!fstring || fstring[0] == 0) return;

        if(prom_vers == PROM_V0)

                (*(romvec->pv_fortheval.v0_eval))(strlen(fstring), fstring);

        else

                (*(romvec->pv_fortheval.v2_eval))(fstring);

        return;

}

/* We want to do this more nicely some day. */

#if CONFIG_SUN_CONSOLE

extern void console_restore_palette(void);

extern void set_palette(void);

extern int serial_console;

#endif

/* Drop into the prom, with the chance to continue with the 'go'

 * prom command.

 */

void

prom_halt(void)

{

        extern void kernel_enter_debugger(void);

        extern void install_obp_ticker(void);

        extern void install_linux_ticker(void);

        kernel_enter_debugger();

#if CONFIG_SUN_CONSOLE

        if(!serial_console)

                console_restore_palette ();

#endif

        install_obp_ticker();

        (*(romvec->pv_abort))();

        install_linux_ticker();

#if CONFIG_SUN_CONSOLE

        if(!serial_console)

                set_palette ();

#endif

        return;

}

/* Drop into the prom, but completely terminate the program.

 * No chance of continuing.

 */

void

prom_die(void)

{

        (*(romvec->pv_halt))();

        /* Never get here. */

        return;

}

typedef void (*sfunc_t)(void);

/* Set prom sync handler to call function 'funcp'. */

void

prom_setsync(sfunc_t funcp)

{

#if CONFIG_AP1000

  printk("not doing setsync\n");

  return;

#endif

        if(!funcp) return;

        *romvec->pv_synchook = funcp;

        return;

}

/* Get the idprom and stuff it into buffer 'idbuf'.  Returns the

 * format type.  'num_bytes' is the number of bytes that your idbuf

 * has space for.  Returns 0xff on error.

 */

unsigned char

prom_getidp(char *idbuf, int num_bytes)

{

        int len;

        len = prom_getproplen(prom_root_node, "idprom");

        if((len>num_bytes) || (len==-1)) return 0xff;

        if(!prom_getproperty(prom_root_node, "idprom", idbuf, num_bytes))

                return idbuf[0];

        return 0xff;

}

/* Get the major prom version number. */

int

prom_version(void)

{

        return romvec->pv_romvers;

}

/* Get the prom plugin-revision. */

int

prom_getrev(void)

{

        return prom_rev;

}

/* Get the prom firmware print revision. */

int

prom_getprev(void)

{

        return prom_prev;

}