/* * 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; local_irq_save(flags); (*(romvec->pv_reboot))(bcommand); local_irq_restore(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: local_irq_save(flags); (*(romvec->pv_halt))(); local_irq_restore(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; }