src/system/kernel/arch/m68k/arch_030_mmu.cpp

   1 /*
   2  * Copyright 2007, Haiku Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              François Revol <revol@free.fr>
   7  */
   8
   9 #include <arch/cpu.h>
  10
  11 #include <arch_030_mmu.h>
  12
  13 #define ARCH_M68K_MMU_TYPE 68030
  14
  15 #include "arch_vm_translation_map_impl.cpp"
  16
  17 static void
  18 set_pgdir(void *rt)
  19 {
  20         long_page_directory_entry entry;
  21         *(uint64 *)&entry = DFL_PAGEENT_VAL;
  22         entry.type = DT_ROOT;
  23         entry.addr = TA_TO_PREA(((addr_t)rt));
  24
  25         asm volatile( \
  26                 "pmove (%0),%%srp\n" \
  27                 "pmove (%0),%%crp\n" \
  28                 : : "a"((uint64 *)&entry));
  29
  30 }
  31
  32
  33 struct m68k_vm_ops m68030_vm_ops = {
  34         _m68k_translation_map_get_pgdir,
  35         m68k_vm_translation_map_init_map,
  36         m68k_vm_translation_map_init_kernel_map_post_sem,
  37         m68k_vm_translation_map_init,
  38         m68k_vm_translation_map_init_post_area,
  39         m68k_vm_translation_map_init_post_sem,
  40         m68k_vm_translation_map_early_map,
  41         /*m68k_vm_translation_map_*/early_query,
  42         set_pgdir,
  43 #if 0
  44         m68k_map_address_range,
  45         m68k_unmap_address_range,
  46         m68k_remap_address_range
  47 #endif
  48         m68k_vm_translation_map_is_kernel_page_accessible
  49 };