root/arch/sparc/prom/misc.c

/* */

DEFINITIONS

1. prom_reboot
2. prom_feval
3. prom_halt
4. prom_die
5. prom_setsync
6. prom_getidp
7. prom_version
8. prom_getrev
9. prom_getprev

   1 /* $Id: misc.c,v 1.8 1996/04/17 23:03:23 davem Exp $
   2  * misc.c:  Miscellaneous prom functions that don't belong
   3  *          anywhere else.
   4  *
   5  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   6  */
   7 
   8 #include <linux/config.h>
   9 #include <asm/openprom.h>
  10 #include <asm/oplib.h>
  11 
  12 /* Reset and reboot the machine with the command 'bcommand'. */
  13 void
  14 prom_reboot(char *bcommand)
     /*  */
  15 {
  16         (*(romvec->pv_reboot))(bcommand);
  17         /* Never get here. */
  18         return;
  19 }
  20 
  21 /* Forth evaluate the expression contained in 'fstring'. */
  22 void
  23 prom_feval(char *fstring)
     /*  */
  24 {
  25         if(!fstring || fstring[0] == 0) return;
  26         if(prom_vers == PROM_V0)
  27                 (*(romvec->pv_fortheval.v0_eval))(strlen(fstring), fstring);
  28         else
  29                 (*(romvec->pv_fortheval.v2_eval))(fstring);
  30         return;
  31 }
  32 
  33 /* We want to do this more nicely some day. */
  34 #if CONFIG_SUN_CONSOLE
  35 extern void console_restore_palette(void);
  36 extern void set_palette(void);
  37 extern int serial_console;
  38 #endif
  39 
  40 /* Drop into the prom, with the chance to continue with the 'go'
  41  * prom command.
  42  */
  43 void
  44 prom_halt(void)
     /*  */
  45 {
  46         extern void kernel_enter_debugger(void);
  47         extern void install_obp_ticker(void);
  48         extern void install_linux_ticker(void);
  49     
  50         kernel_enter_debugger();
  51 #if CONFIG_SUN_CONSOLE
  52         if(!serial_console)
  53                 console_restore_palette ();
  54 #endif
  55         install_obp_ticker();
  56         (*(romvec->pv_abort))();
  57         install_linux_ticker();
  58 #if CONFIG_SUN_CONSOLE
  59         if(!serial_console)
  60                 set_palette ();
  61 #endif
  62         return;
  63 }
  64 
  65 /* Drop into the prom, but completely terminate the program.
  66  * No chance of continuing.
  67  */
  68 void
  69 prom_die(void)
     /*  */
  70 {
  71         (*(romvec->pv_halt))();
  72         /* Never get here. */
  73         return;
  74 }
  75 
  76 typedef void (*sfunc_t)(void);
  77 
  78 /* Set prom sync handler to call function 'funcp'. */
  79 void
  80 prom_setsync(sfunc_t funcp)
     /*  */
  81 {
  82 #if CONFIG_AP1000
  83   printk("not doing setsync\n");
  84   return;
  85 #endif
  86         if(!funcp) return;
  87         *romvec->pv_synchook = funcp;
  88         return;
  89 }
  90 
  91 /* Get the idprom and stuff it into buffer 'idbuf'.  Returns the
  92  * format type.  'num_bytes' is the number of bytes that your idbuf
  93  * has space for.  Returns 0xff on error.
  94  */
  95 unsigned char
  96 prom_getidp(char *idbuf, int num_bytes)
     /*  */
  97 {
  98         int len;
  99 
 100         len = prom_getproplen(prom_root_node, "idprom");
 101         if((len>num_bytes) || (len==-1)) return 0xff;
 102         if(!prom_getproperty(prom_root_node, "idprom", idbuf, num_bytes))
 103                 return idbuf[0];
 104 
 105         return 0xff;
 106 }
 107 
 108 /* Get the major prom version number. */
 109 int
 110 prom_version(void)
     /*  */
 111 {
 112         return romvec->pv_romvers;
 113 }
 114 
 115 /* Get the prom plugin-revision. */
 116 int
 117 prom_getrev(void)
     /*  */
 118 {
 119         return prom_rev;
 120 }
 121 
 122 /* Get the prom firmware print revision. */
 123 int
 124 prom_getprev(void)
     /*  */
 125 {
 126         return prom_prev;
 127 }

/* */