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/*
* misc.c: Miscellaneous ARCS PROM routines.
*
* Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <asm/sgialib.h>
#include <asm/bootinfo.h>
#include <asm/system.h>
extern unsigned long mips_cputype;
extern int initialize_kbd(void);
extern void *sgiwd93_host;
extern void reset_wd33c93(void *instance);
static inline void shutoff_r4600_cache(void)
{
unsigned long tmp1, tmp2, tmp3;
if(mips_cputype != CPU_R4600 &&
mips_cputype != CPU_R4640 &&
mips_cputype != CPU_R4700)
return;
printk("Disabling R4600 SCACHE\n");
__asm__ __volatile__("
.set noreorder
.set mips3
li %0, 0x1
dsll %0, 31
lui %1, 0x9000
dsll32 %1, 0
or %0, %1, %0
mfc0 %2, $12
nop; nop; nop; nop;
li %1, 0x80
mtc0 %1, $12
nop; nop; nop; nop;
sh $0, 0(%0)
mtc0 $0, $12
nop; nop; nop; nop;
mtc0 %2, $12
nop; nop; nop; nop;
.set mips2
.set reorder
" : "=r" (tmp1), "=r" (tmp2), "=r" (tmp3));
}
void prom_halt(void)
{
shutoff_r4600_cache();
initialize_kbd();
#if CONFIG_SCSI_SGIWD93
reset_wd33c93(sgiwd93_host);
#endif
cli();
romvec->halt();
}
void prom_powerdown(void)
{
shutoff_r4600_cache();
initialize_kbd();
#if CONFIG_SCSI_SGIWD93
reset_wd33c93(sgiwd93_host);
#endif
cli();
romvec->pdown();
}
/* XXX is this a soft reset basically? XXX */
void prom_restart(void)
{
shutoff_r4600_cache();
initialize_kbd();
#if CONFIG_SCSI_SGIWD93
reset_wd33c93(sgiwd93_host);
#endif
cli();
romvec->restart();
}
void prom_reboot(void)
{
shutoff_r4600_cache();
initialize_kbd();
#if CONFIG_SCSI_SGIWD93
reset_wd33c93(sgiwd93_host);
#endif
cli();
romvec->reboot();
}
void prom_imode(void)
{
shutoff_r4600_cache();
initialize_kbd();
#if CONFIG_SCSI_SGIWD93
reset_wd33c93(sgiwd93_host);
#endif
cli();
romvec->imode();
}
long prom_cfgsave(void)
{
return romvec->cfg_save();
}
struct linux_sysid *prom_getsysid(void)
{
return romvec->get_sysid();
}
void prom_cacheflush(void)
{
romvec->cache_flush();
}
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