grub2/kern/powerpc/ieee1275/init.c
hollisb 458786f8fc 2005-01-03 Hollis Blanchard <hollis@penguinppc.org>
* boot/powerpc/ieee1275/ieee1275.c (grub_ieee1275_milliseconds):
	New function.
	* include/grub/powerpc/ieee1275/ieee1275.h
	(grub_ieee1275_milliseconds): New prototype.
	* include/grub/powerpc/ieee1275/time.h (GRUB_TICKS_PER_SECOND):
	Change to 1000.
	* kern/powerpc/ieee1275/init.c (grub_get_rtc): Call
	grub_ieee1275_milliseconds.
2005-01-03 21:48:45 +00:00

92 lines
2.2 KiB
C

/* init.c -- Initialize GRUB on the newworld mac (PPC). */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2003, 2004,2005 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/kernel.h>
#include <grub/dl.h>
#include <grub/disk.h>
#include <grub/mm.h>
#include <grub/partition.h>
#include <grub/machine/ieee1275.h>
#include <grub/normal.h>
#include <grub/fs.h>
#include <grub/setjmp.h>
#include <grub/env.h>
#include <grub/misc.h>
#include <grub/machine/init.h>
#include <grub/machine/time.h>
/* XXX: Modules are not yet supported. */
grub_addr_t grub_end_addr = -1;
grub_addr_t grub_total_module_size = 0;
void
abort (void)
{
/* Trap to Open Firmware. */
asm ("trap");
for (;;);
}
void
grub_machine_init (void)
{
extern char _start;
grub_addr_t heap_start;
grub_addr_t heap_len;
grub_console_init ();
/* Apple OF 1.0.5 reserves 0x4000 bytes for the exception handlers. */
heap_start = 0x4000;
/* Apple OF 3.1.1 reserves an extra 0x1000 bytes below the load address
of an ELF file. */
heap_len = (grub_addr_t) &_start - 0x1000 - heap_start;
if (grub_ieee1275_claim (heap_start, heap_len, 0, 0))
{
grub_printf ("Failed to claim heap at 0x%x, len 0x%x\n", heap_start,
heap_len);
abort ();
}
grub_mm_init_region ((void *) heap_start, heap_len);
grub_env_set ("prefix", "");
grub_ofdisk_init ();
}
void
grub_stop (void)
{
for (;;);
}
grub_uint32_t
grub_get_rtc (void)
{
grub_uint32_t msecs;
if (grub_ieee1275_milliseconds (&msecs))
return 0;
return msecs;
}