rom/kernel/kernel_base.h

   1 /*
   2     Copyright � 1995-2013, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6 */
   7
   8 #define __KERNEL_NOLIBBASE__
   9
  10 #include <exec/execbase.h>
  11 #include <exec/memory.h>
  12 #include <exec/semaphores.h>
  13 #include <aros/kernel.h>
  14
  15 /* Early declaration for ictl functions */
  16 struct KernelBase;
  17
  18 /* These two specify IRQ_COUNT and EXCEPTIONS_COUNT */
  19 #include <kernel_arch.h>
  20 #include <kernel_cpu.h>
  21
  22 /* Declare global variable at absolute address */
  23 #define IMPORT_GLOBAL(var, addr) \
  24     asm(".globl " # var "\n"     \
  25         ".set " # var ", " # addr )
  26
  27 /* Platform-specific stuff. Black box here. */
  28 struct PlatformData;
  29
  30 /* kernel.resource base. Nothing spectacular, really. */
  31 struct KernelBase
  32 {
  33     struct Node            kb_Node;
  34     struct MinList         kb_Exceptions[EXCEPTIONS_COUNT];
  35     struct List            kb_Interrupts[IRQ_COUNT];
  36     ULONG                  kb_ContextFlags;     /* Hints for KrnCreateContext() */
  37     ULONG                  kb_ContextSize;      /* Total length of CPU context  */
  38     ULONG                  kb_PageSize;         /* Physical memory page size    */
  39     struct PlatformData   *kb_PlatformData;
  40 };
  41
  42 /*
  43  * Some useful global variables. They are global because:
  44  * - BootMsg needs to be stored before KernelBase is allocated;
  45  * - KernelBase is needed by interrupt handling code
  46  */
  47 extern struct TagItem *BootMsg;
  48 extern struct KernelBase *KernelBase;
  49
  50 /* Allocation function */
  51 struct KernelBase *AllocKernelBase(struct ExecBase *SysBase);
  52
  53 /* Utility function to clear BSS segments. Call it before storing any globals!!! */
  54 void __clear_bss(const struct KernelBSS *bss);
  55
  56 /* Memory header initialization functions */
  57 void krnCreateMemHeader(CONST_STRPTR name, BYTE pri, APTR start, IPTR size, ULONG flags);
  58 struct MemHeader *krnCreateROMHeader(CONST_STRPTR name, APTR start, APTR end);
  59 /* Memhry header - TLSF support functions */
  60 void krnCreateTLSFMemHeader(CONST_STRPTR name, BYTE pri, APTR start, IPTR size, ULONG flags);
  61 struct MemHeader * krnConvertMemHeaderToTLSF(struct MemHeader * source);