174 lines
3.7 KiB
C
174 lines
3.7 KiB
C
/* init.c -- Initialize GRUB on SPARC64. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/kernel.h>
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#include <grub/mm.h>
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#include <grub/env.h>
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#include <grub/err.h>
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#include <grub/misc.h>
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#include <grub/time.h>
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#include <grub/machine/boot.h>
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#include <grub/machine/console.h>
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#include <grub/machine/kernel.h>
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#include <grub/machine/time.h>
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#include <grub/ieee1275/ofdisk.h>
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#include <grub/ieee1275/ieee1275.h>
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grub_addr_t grub_ieee1275_original_stack;
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void
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grub_exit (void)
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{
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grub_ieee1275_exit ();
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}
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static grub_uint64_t
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ieee1275_get_time_ms (void)
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{
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grub_uint32_t msecs = 0;
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grub_ieee1275_milliseconds (&msecs);
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return msecs;
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}
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grub_uint32_t
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grub_get_rtc (void)
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{
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return ieee1275_get_time_ms ();
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}
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grub_addr_t
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grub_arch_modules_addr (void)
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{
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extern char _end[];
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return (grub_addr_t) _end;
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}
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void
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grub_machine_set_prefix (void)
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{
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if (grub_prefix[0] != '(')
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{
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char bootpath[IEEE1275_MAX_PATH_LEN];
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char *prefix, *path, *colon;
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grub_ssize_t actual;
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if (grub_ieee1275_get_property (grub_ieee1275_chosen, "bootpath",
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&bootpath, sizeof (bootpath), &actual))
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{
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/* Should never happen. */
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grub_printf ("/chosen/bootpath property missing!\n");
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grub_env_set ("prefix", "");
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return;
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}
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/* Transform an OF device path to a GRUB path. */
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colon = grub_strchr (bootpath, ':');
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if (colon)
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{
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char *part = colon + 1;
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/* Consistently provide numbered partitions to GRUB.
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OpenBOOT traditionally uses alphabetical partition
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specifiers. */
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if (part[0] >= 'a' && part[0] <= 'z')
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part[0] = '1' + (part[0] - 'a');
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}
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prefix = grub_ieee1275_encode_devname (bootpath);
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path = grub_xasprintf("%s%s", prefix, grub_prefix);
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grub_strcpy (grub_prefix, path);
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grub_free (path);
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grub_free (prefix);
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}
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grub_env_set ("prefix", grub_prefix);
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}
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static void
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grub_heap_init (void)
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{
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grub_mm_init_region ((void *) (grub_modules_get_end ()
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+ GRUB_KERNEL_MACHINE_STACK_SIZE), 0x200000);
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}
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static void
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grub_parse_cmdline (void)
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{
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grub_ssize_t actual;
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char args[256];
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if (grub_ieee1275_get_property (grub_ieee1275_chosen, "bootargs", &args,
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sizeof args, &actual) == 0
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&& actual > 1)
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{
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int i = 0;
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while (i < actual)
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{
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char *command = &args[i];
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char *end;
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char *val;
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end = grub_strchr (command, ';');
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if (end == 0)
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i = actual; /* No more commands after this one. */
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else
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{
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*end = '\0';
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i += end - command + 1;
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while (grub_isspace(args[i]))
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i++;
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}
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/* Process command. */
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val = grub_strchr (command, '=');
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if (val)
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{
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*val = '\0';
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grub_env_set (command, val + 1);
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}
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}
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}
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}
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void
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grub_machine_init (void)
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{
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grub_ieee1275_init ();
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grub_console_init ();
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grub_heap_init ();
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grub_ieee1275_set_flag (GRUB_IEEE1275_FLAG_NO_PARTITION_0);
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grub_ofdisk_init ();
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grub_parse_cmdline ();
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grub_install_get_time_ms (ieee1275_get_time_ms);
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}
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void
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grub_machine_fini (void)
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{
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grub_ofdisk_fini ();
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grub_console_fini ();
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}
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