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/* $Id: misc.c,v 1.8 1997/07/14 23:45:28 davem Exp $
* misc.c: Miscellaneous prom functions that don't belong
* anywhere else.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
*/
#include <linux/config.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <asm/openprom.h>
#include <asm/oplib.h>
/* Reset and reboot the machine with the command 'bcommand'. */
void
prom_reboot(char *bcommand)
{
p1275_cmd ("boot", P1275_ARG(0,P1275_ARG_IN_STRING)|
P1275_INOUT(1,0), bcommand);
}
/* Forth evaluate the expression contained in 'fstring'. */
void
prom_feval(char *fstring)
{
if(!fstring || fstring[0] == 0)
return;
p1275_cmd ("interpret", P1275_ARG(0,P1275_ARG_IN_STRING)|
P1275_INOUT(1,1), fstring);
}
/* We want to do this more nicely some day. */
#ifdef 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.
*/
/* XXX Fix the pre and post calls as it locks up my Ultra at the moment -DaveM */
void
prom_cmdline(void)
{
extern void kernel_enter_debugger(void);
/* extern void install_obp_ticker(void); */
/* extern void install_linux_ticker(void); */
unsigned long flags;
/* kernel_enter_debugger(); */
#ifdef CONFIG_SUN_CONSOLE
#if 0
if(!serial_console)
console_restore_palette ();
#endif
#endif
/* install_obp_ticker(); */
save_flags(flags); cli();
p1275_cmd ("enter", P1275_INOUT(0,0));
restore_flags(flags);
/* install_linux_ticker(); */
#ifdef CONFIG_SUN_CONSOLE
#if 0
if(!serial_console)
set_palette ();
#endif
#endif
}
/* Drop into the prom, but completely terminate the program.
* No chance of continuing.
*/
void
prom_halt(void)
{
again:
p1275_cmd ("exit", P1275_INOUT(0,0));
goto again; /* PROM is out to get me -DaveM */
}
/* Set prom sync handler to call function 'funcp'. */
void
prom_setsync(sync_func_t funcp)
{
if(!funcp) return;
p1275_cmd ("set-callback", P1275_ARG(0,P1275_ARG_IN_FUNCTION)|
P1275_INOUT(1,1), funcp);
}
/* 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_get_idprom(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 PROM_P1275;
}
/* 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;
}
/* Install Linux trap table so PROM uses that instead of it's own. */
void prom_set_trap_table(unsigned long tba)
{
p1275_cmd("SUNW,set-trap-table", P1275_INOUT(1, 0), tba);
}
#ifdef __SMP__
void prom_start_cpu(int cpunode, unsigned long pc, unsigned long o0)
{
p1275_cmd("SUNW,start-cpu", P1275_INOUT(3, 0), cpunode, pc, o0);
}
#endif
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