arch/all-pc/boot/grub2-aros/grub-core/kern/sparc64/ieee1275/init.c

   1 /*  init.c -- Initialize GRUB on SPARC64.  */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2009 Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <grub/kernel.h>
  21 #include <grub/mm.h>
  22 #include <grub/env.h>
  23 #include <grub/err.h>
  24 #include <grub/misc.h>
  25 #include <grub/time.h>
  26 #include <grub/machine/boot.h>
  27 #include <grub/ieee1275/console.h>
  28 #include <grub/machine/kernel.h>
  29 #include <grub/machine/time.h>
  30 #include <grub/ieee1275/ofdisk.h>
  31 #include <grub/ieee1275/ieee1275.h>
  32
  33 grub_addr_t grub_ieee1275_original_stack;
  34
  35 void
  36 grub_exit (void)
  37 {
  38   grub_ieee1275_exit ();
  39 }
  40
  41 static grub_uint64_t
  42 ieee1275_get_time_ms (void)
  43 {
  44   grub_uint32_t msecs = 0;
  45
  46   grub_ieee1275_milliseconds (&msecs);
  47
  48   return msecs;
  49 }
  50
  51 grub_uint32_t
  52 grub_get_rtc (void)
  53 {
  54   return ieee1275_get_time_ms ();
  55 }
  56
  57 grub_addr_t
  58 grub_arch_modules_addr (void)
  59 {
  60   extern char _end[];
  61   return (grub_addr_t) _end;
  62 }
  63
  64 void
  65 grub_machine_set_prefix (void)
  66 {
  67   if (grub_prefix[0] != '(')
  68     {
  69       char bootpath[IEEE1275_MAX_PATH_LEN];
  70       char *prefix, *path, *colon;
  71       grub_ssize_t actual;
  72
  73       if (grub_ieee1275_get_property (grub_ieee1275_chosen, "bootpath",
  74                                       &bootpath, sizeof (bootpath), &actual))
  75         {
  76           /* Should never happen.  */
  77           grub_printf ("/chosen/bootpath property missing!\n");
  78           grub_env_set ("prefix", "");
  79           return;
  80         }
  81
  82       /* Transform an OF device path to a GRUB path.  */
  83       colon = grub_strchr (bootpath, ':');
  84       if (colon)
  85         {
  86           char *part = colon + 1;
  87
  88           /* Consistently provide numbered partitions to GRUB.
  89              OpenBOOT traditionally uses alphabetical partition
  90              specifiers.  */
  91           if (part[0] >= 'a' && part[0] <= 'z')
  92             part[0] = '1' + (part[0] - 'a');
  93         }
  94       prefix = grub_ieee1275_encode_devname (bootpath);
  95
  96       path = grub_xasprintf("%s%s", prefix, grub_prefix);
  97
  98       grub_strcpy (grub_prefix, path);
  99
 100       grub_free (path);
 101       grub_free (prefix);
 102     }
 103
 104   grub_env_set ("prefix", grub_prefix);
 105 }
 106
 107 static void
 108 grub_heap_init (void)
 109 {
 110   grub_mm_init_region ((void *) (grub_modules_get_end ()
 111                                  + GRUB_KERNEL_MACHINE_STACK_SIZE), 0x200000);
 112 }
 113
 114 static void
 115 grub_parse_cmdline (void)
 116 {
 117   grub_ssize_t actual;
 118   char args[256];
 119
 120   if (grub_ieee1275_get_property (grub_ieee1275_chosen, "bootargs", &args,
 121                                   sizeof args, &actual) == 0
 122       && actual > 1)
 123     {
 124       int i = 0;
 125
 126       while (i < actual)
 127         {
 128           char *command = &args[i];
 129           char *end;
 130           char *val;
 131
 132           end = grub_strchr (command, ';');
 133           if (end == 0)
 134             i = actual; /* No more commands after this one.  */
 135           else
 136             {
 137               *end = '\0';
 138               i += end - command + 1;
 139               while (grub_isspace(args[i]))
 140                 i++;
 141             }
 142
 143           /* Process command.  */
 144           val = grub_strchr (command, '=');
 145           if (val)
 146             {
 147               *val = '\0';
 148               grub_env_set (command, val + 1);
 149             }
 150         }
 151     }
 152 }
 153
 154 void
 155 grub_machine_init (void)
 156 {
 157   grub_ieee1275_init ();
 158   grub_console_init_early ();
 159   grub_heap_init ();
 160   grub_console_init_lately ();
 161
 162   grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_NO_PARTITION_0);
 163   grub_ofdisk_init ();
 164
 165   grub_parse_cmdline ();
 166   grub_install_get_time_ms (ieee1275_get_time_ms);
 167 }
 168
 169 void
 170 grub_machine_fini (void)
 171 {
 172   grub_ofdisk_fini ();
 173   grub_console_fini ();
 174 }