arch/sparc/prom/mp.c

/* */
This source file includes following definitions.
prom_startcpu
prom_stopcpu
prom_idlecpu
prom_restartcpu
   1 /* $Id: mp.c,v 1.4 1995/11/25 01:00:06 davem Exp $
   2  * mp.c:  OpenBoot Prom Multiprocessor support routines.  Don't call
   3  *        these on a UP or else you will halt and catch fire. ;)
   4  *
   5  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
   6  */
   7 
   8 #include <asm/openprom.h>
   9 #include <asm/oplib.h>
  10 
  11 /* Start cpu with prom-tree node 'cpunode' using context described
  12  * by 'ctable_reg' in context 'ctx' at program counter 'pc'.
  13  *
  14  * XXX Have to look into what the return values mean. XXX
  15  */
  16 int
  17 prom_startcpu(int cpunode, struct linux_prom_registers *ctable_reg, int ctx, char *pc)
     /*  */
  18 {
  19         switch(prom_vers) {
  20         case PROM_V0:
  21         case PROM_V2:
  22                 break;
  23         case PROM_V3:
  24         case PROM_P1275:
  25                 return (*(romvec->v3_cpustart))(cpunode, (int) ctable_reg, ctx, pc);
  26                 break;
  27         };
  28 
  29         return -1;
  30 }
  31 
  32 /* Stop CPU with device prom-tree node 'cpunode'.
  33  * XXX Again, what does the return value really mean? XXX
  34  */
  35 int
  36 prom_stopcpu(int cpunode)
     /*  */
  37 {
  38         switch(prom_vers) {
  39         case PROM_V0:
  40         case PROM_V2:
  41                 break;
  42         case PROM_V3:
  43         case PROM_P1275:
  44                 return (*(romvec->v3_cpustop))(cpunode);
  45                 break;
  46         };
  47 
  48         return -1;
  49 }
  50 
  51 /* Make CPU with device prom-tree node 'cpunode' idle.
  52  * XXX Return value, anyone? XXX
  53  */
  54 int
  55 prom_idlecpu(int cpunode)
     /*  */
  56 {
  57         switch(prom_vers) {
  58         case PROM_V0:
  59         case PROM_V2:
  60                 break;
  61         case PROM_V3:
  62         case PROM_P1275:
  63                 return (*(romvec->v3_cpuidle))(cpunode);
  64                 break;
  65         };
  66 
  67         return -1;
  68 }
  69 
  70 /* Resume the execution of CPU with nodeid 'cpunode'.
  71  * XXX Come on, somebody has to know... XXX
  72  */
  73 int
  74 prom_restartcpu(int cpunode)
     /*  */
  75 {
  76         switch(prom_vers) {
  77         case PROM_V0:
  78         case PROM_V2:
  79                 break;
  80         case PROM_V3:
  81         case PROM_P1275:
  82                 return (*(romvec->v3_cpuresume))(cpunode);
  83                 break;
  84         };
  85 
  86         return -1;
  87 }
/* */
root/arch/sparc/prom/mp.c

DEFINITIONS
