misc.c
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- /* $Id: misc.c,v 1.15 1997/05/14 20:45:00 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/types.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <asm/sun3-head.h>
- #include <asm/idprom.h>
- #include <asm/openprom.h>
- #include <asm/oplib.h>
- #include <asm/movs.h>
- /* Reset and reboot the machine with the command 'bcommand'. */
- void
- prom_reboot(char *bcommand)
- {
- unsigned long flags;
- save_flags(flags); cli();
- (*(romvec->pv_reboot))(bcommand);
- restore_flags(flags);
- }
- /* Drop into the prom, with the chance to continue with the 'go'
- * prom command.
- */
- void
- prom_cmdline(void)
- {
- }
- /* Drop into the prom, but completely terminate the program.
- * No chance of continuing.
- */
- void
- prom_halt(void)
- {
- unsigned long flags;
- again:
- save_flags(flags); cli();
- (*(romvec->pv_halt))();
- restore_flags(flags);
- goto again; /* PROM is out to get me -DaveM */
- }
- typedef void (*sfunc_t)(void);
- /* 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 i, oldsfc;
- GET_SFC(oldsfc);
- SET_SFC(FC_CONTROL);
- for(i=0;i<num_bytes; i++)
- {
- /* There is a problem with the GET_CONTROL_BYTE
- macro; defining the extra variable
- gets around it.
- */
- int c;
- GET_CONTROL_BYTE(SUN3_IDPROM_BASE + i, c);
- idbuf[i] = c;
- }
- SET_SFC(oldsfc);
- return idbuf[0];
- }
- /* 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;
- }