kern/mips/yeeloong/init.c

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2009,2010  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <grub/kernel.h>
  20 #include <grub/misc.h>
  21 #include <grub/env.h>
  22 #include <grub/time.h>
  23 #include <grub/types.h>
  24 #include <grub/misc.h>
  25 #include <grub/mm.h>
  26 #include <grub/time.h>
  27 #include <grub/machine/kernel.h>
  28 #include <grub/machine/memory.h>
  29 #include <grub/cpu/kernel.h>
  30
  31 extern void grub_video_sm712_init (void);
  32 extern void grub_video_video_init (void);
  33 extern void grub_video_bitmap_init (void);
  34 extern void grub_font_manager_init (void);
  35 extern void grub_term_gfxterm_init (void);
  36 extern void grub_at_keyboard_init (void);
  37
  38 /* FIXME: use interrupt to count high.  */
  39 grub_uint64_t
  40 grub_get_rtc (void)
  41 {
  42   static grub_uint32_t high = 0;
  43   static grub_uint32_t last = 0;
  44   grub_uint32_t low;
  45
  46   asm volatile ("mfc0 %0, $9": "=r" (low));
  47   if (low < last)
  48     high++;
  49   last = low;
  50
  51   return (((grub_uint64_t) high) << 32) | low;
  52 }
  53
  54 grub_err_t
  55 grub_machine_mmap_iterate (int NESTED_FUNC_ATTR (*hook) (grub_uint64_t,
  56                                                          grub_uint64_t,
  57                                                          grub_uint32_t))
  58 {
  59   hook (GRUB_ARCH_LOWMEMPSTART, grub_arch_memsize << 20,
  60         GRUB_MACHINE_MEMORY_AVAILABLE);
  61   hook (GRUB_ARCH_HIGHMEMPSTART, grub_arch_highmemsize << 20,
  62         GRUB_MACHINE_MEMORY_AVAILABLE);
  63   return GRUB_ERR_NONE;
  64 }
  65
  66
  67 static void *
  68 get_modules_end (void)
  69 {
  70   struct grub_module_info *modinfo;
  71   struct grub_module_header *header;
  72   grub_addr_t modbase;
  73
  74   modbase = grub_arch_modules_addr ();
  75   modinfo = (struct grub_module_info *) modbase;
  76
  77   /* Check if there are any modules.  */
  78   if ((modinfo == 0) || modinfo->magic != GRUB_MODULE_MAGIC)
  79     return modinfo;
  80
  81   for (header = (struct grub_module_header *) (modbase + modinfo->offset);
  82        header < (struct grub_module_header *) (modbase + modinfo->size);
  83        header = (struct grub_module_header *) ((char *) header + header->size));
  84
  85   return header;
  86 }
  87
  88 void
  89 grub_machine_init (void)
  90 {
  91   void *modend;
  92   modend = get_modules_end ();
  93   grub_mm_init_region (modend, (grub_arch_memsize << 20)
  94                        - (((grub_addr_t) modend) - GRUB_ARCH_LOWMEMVSTART));
  95   /* FIXME: use upper memory as well.  */
  96   grub_install_get_time_ms (grub_rtc_get_time_ms);
  97
  98   /* Initialize output terminal (can't be done earlier, as gfxterm
  99      relies on a working heap.  */
 100   grub_video_sm712_init ();
 101   grub_video_video_init ();
 102   grub_video_bitmap_init ();
 103   grub_font_manager_init ();
 104   grub_term_gfxterm_init ();
 105
 106   grub_at_keyboard_init ();
 107 }
 108
 109 void
 110 grub_machine_fini (void)
 111 {
 112 }
 113
 114 void
 115 grub_exit (void)
 116 {
 117   while (1);
 118 }
 119
 120 void
 121 grub_halt (void)
 122 {
 123   while (1);
 124 }
 125
 126 void
 127 grub_reboot (void)
 128 {
 129   while (1);
 130 }
 131