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/* $OpenBSD: bugcrt.c,v 1.3 1998/08/22 09:16:47 smurph Exp $ */
#include <sys/types.h>
#include <machine/prom.h>
struct mvmeprom_args bugargs = { 1 }; /* not BSS */
asm (".text");
asm (".long 0x003ffff8");
asm (".long _start");
start()
{
register int dev_lun asm (MVMEPROM_REG_DEVLUN);
register int ctrl_lun asm (MVMEPROM_REG_CTRLLUN);
register int flags asm (MVMEPROM_REG_FLAGS);
register int ctrl_addr asm (MVMEPROM_REG_CTRLADDR);
register int entry asm (MVMEPROM_REG_ENTRY);
register int conf_blk asm (MVMEPROM_REG_CONFBLK);
register char *arg_start asm (MVMEPROM_REG_ARGSTART);
register char *arg_end asm (MVMEPROM_REG_ARGEND);
register char *nbarg_start asm (MVMEPROM_REG_NBARGSTART);
register char *nbarg_end asm (MVMEPROM_REG_NBARGEND);
extern int edata, end;
struct mvmeprom_brdid *id, *mvmeprom_brdid();
/* Do not use r10 to enable the SFU1. This wipes out
the netboot args. Not cool at all... r25 seems free. */
asm ("# enable SFU1");
asm (" ldcr r25,cr1");
asm (" xor r25,r25,0x8");
asm (" stcr r25,cr1");
bugargs.dev_lun = dev_lun;
bugargs.ctrl_lun = ctrl_lun;
bugargs.flags = flags;
bugargs.ctrl_addr = ctrl_addr;
bugargs.entry = entry;
bugargs.conf_blk = conf_blk;
bugargs.arg_start = arg_start;
bugargs.arg_end = arg_end;
bugargs.nbarg_start = nbarg_start;
bugargs.nbarg_end = nbarg_end;
*bugargs.arg_end = 0;
bzero(&edata, (&end - &edata));
id = mvmeprom_brdid();
bugargs.cputyp = id->model;
main();
mvmeprom_return();
/* NOTREACHED */
}
__main()
{
}
void
bugexec(addr)
void (*addr)();
{
register int dev_lun asm (MVMEPROM_REG_DEVLUN);
register int ctrl_lun asm (MVMEPROM_REG_CTRLLUN);
register int flags asm (MVMEPROM_REG_FLAGS);
register int ctrl_addr asm (MVMEPROM_REG_CTRLADDR);
register int entry asm (MVMEPROM_REG_ENTRY);
register int conf_blk asm (MVMEPROM_REG_CONFBLK);
register char *arg_start asm (MVMEPROM_REG_ARGSTART);
register char *arg_end asm (MVMEPROM_REG_ARGEND);
dev_lun = bugargs.dev_lun;
ctrl_lun = bugargs.ctrl_lun;
flags = bugargs.flags;
ctrl_addr = bugargs.ctrl_addr;
entry = bugargs.entry;
conf_blk = bugargs.conf_blk;
arg_start = bugargs.arg_start;
arg_end = bugargs.arg_end;
(*addr)();
printf("bugexec: 0x%x returned!\n", addr);
_rtt();
}
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