arch/arm-all/kernel/cpu_init.c

   1 /*
   2     Copyright � 1995-2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <aros/symbolsets.h>
   7 #include <exec/types.h>
   8
   9 #include "kernel_base.h"
  10 #include "kernel_cpu.h"
  11
  12 /*
  13  * The job of this function is to probe the CPU and set up kb_ContextFlags
  14  * and kb_ContextSize.
  15  * kb_ContextFlags is whatever needs to be passed to KrnCreateContext() in
  16  * order to create a right thing. kb_ContextSize is total length of our
  17  * context area (including FPU data and private data). It is needed for
  18  * complete context save/restore during Exec exceptions processing
  19  */
  20
  21 #ifndef ARM_FPU_TYPE
  22 #define ARM_FPU_TYPE    FPU_VFP
  23 #define ARM_FPU_SIZE    32*64
  24 #endif // !ARM_FPU_TYPE
  25
  26
  27 static int cpu_Init(struct KernelBase *KernelBase)
  28 {
  29     /*
  30      * On ARM the different thing is FPU type.
  31      * TODO: in future this can be extended to support more than
  32      * a single FPU type.
  33      */
  34     KernelBase->kb_ContextFlags = ARM_FPU_TYPE;
  35     KernelBase->kb_ContextSize  = sizeof(struct AROSCPUContext) + ARM_FPU_SIZE;
  36
  37     return TRUE;
  38 }
  39
  40 ADD2INITLIB(cpu_Init, 5);