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105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
/* init.c -- Initialize GRUB on the newworld mac (PPC). */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.
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*
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* This program 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <grub/kernel.h>
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#include <grub/dl.h>
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#include <grub/disk.h>
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#include <grub/mm.h>
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#include <grub/partition.h>
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#include <grub/machine/ieee1275.h>
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#include <grub/normal.h>
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#include <grub/fs.h>
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#include <grub/setjmp.h>
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#include <grub/env.h>
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#include <grub/misc.h>
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#include <grub/machine/init.h>
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#include <grub/machine/time.h>
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#include <grub/machine/kernel.h>
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/* Apple OF 1.0.5 reserves 0x0 to 0x4000 for the exception handlers. */
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static const grub_addr_t grub_heap_start = 0x4000;
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static grub_addr_t grub_heap_len;
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void
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abort (void)
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{
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/* Trap to Open Firmware. */
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asm ("trap");
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for (;;);
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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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extern char _start;
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grub_console_init ();
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/* Apple OF 3.1.1 reserves an extra 0x1000 bytes below the load address
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of an ELF file. */
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grub_heap_len = (grub_addr_t) &_start - 0x1000 - grub_heap_start;
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if (grub_ieee1275_claim (grub_heap_start, grub_heap_len, 0, 0))
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{
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grub_printf ("Failed to claim heap at 0x%x, len 0x%x\n", grub_heap_start,
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grub_heap_len);
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abort ();
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}
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grub_mm_init_region ((void *) grub_heap_start, grub_heap_len);
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grub_env_set ("prefix", "");
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grub_ofdisk_init ();
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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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grub_ieee1275_release (grub_heap_start, grub_heap_len);
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/* XXX Release memory claimed for Old World firmware. */
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}
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void
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grub_stop (void)
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{
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for (;;);
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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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grub_uint32_t msecs;
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if (grub_ieee1275_milliseconds (&msecs))
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return 0;
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return msecs;
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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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return GRUB_IEEE1275_MODULE_BASE;
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}
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