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/* $Id: misc.c,v 1.8 1996/04/17 23:03:23 davem 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;
}
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