forked from Minki/linux
97 lines
2.4 KiB
C
97 lines
2.4 KiB
C
/*
|
|
* Copyright (C) 2000, 2001 Broadcom Corporation
|
|
*
|
|
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/bootmem.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/initrd.h>
|
|
#include <linux/pm.h>
|
|
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/reboot.h>
|
|
|
|
#define MAX_RAM_SIZE ((CONFIG_SIBYTE_STANDALONE_RAM_SIZE * 1024 * 1024) - 1)
|
|
|
|
static __init void prom_meminit(void)
|
|
{
|
|
#ifdef CONFIG_BLK_DEV_INITRD
|
|
unsigned long initrd_pstart;
|
|
unsigned long initrd_pend;
|
|
|
|
initrd_pstart = __pa(initrd_start);
|
|
initrd_pend = __pa(initrd_end);
|
|
if (initrd_start &&
|
|
((initrd_pstart > MAX_RAM_SIZE)
|
|
|| (initrd_pend > MAX_RAM_SIZE))) {
|
|
panic("initrd out of addressable memory");
|
|
}
|
|
|
|
add_memory_region(0, initrd_pstart,
|
|
BOOT_MEM_RAM);
|
|
add_memory_region(initrd_pstart, initrd_pend - initrd_pstart,
|
|
BOOT_MEM_RESERVED);
|
|
add_memory_region(initrd_pend,
|
|
(CONFIG_SIBYTE_STANDALONE_RAM_SIZE * 1024 * 1024) - initrd_pend,
|
|
BOOT_MEM_RAM);
|
|
#else
|
|
add_memory_region(0, CONFIG_SIBYTE_STANDALONE_RAM_SIZE * 1024 * 1024,
|
|
BOOT_MEM_RAM);
|
|
#endif
|
|
}
|
|
|
|
void prom_cpu0_exit(void *unused)
|
|
{
|
|
while (1) ;
|
|
}
|
|
|
|
static void prom_linux_exit(void)
|
|
{
|
|
#ifdef CONFIG_SMP
|
|
if (smp_processor_id()) {
|
|
smp_call_function(prom_cpu0_exit, NULL, 1, 1);
|
|
}
|
|
#endif
|
|
while(1);
|
|
}
|
|
|
|
/*
|
|
* prom_init is called just after the cpu type is determined, from setup_arch()
|
|
*/
|
|
void __init prom_init(void)
|
|
{
|
|
_machine_restart = (void (*)(char *))prom_linux_exit;
|
|
_machine_halt = prom_linux_exit;
|
|
pm_power_off = prom_linux_exit;
|
|
|
|
strcpy(arcs_cmdline, "root=/dev/ram0 ");
|
|
|
|
prom_meminit();
|
|
}
|
|
|
|
void __init prom_free_prom_memory(void)
|
|
{
|
|
/* Not sure what I'm supposed to do here. Nothing, I think */
|
|
}
|
|
|
|
void prom_putchar(char c)
|
|
{
|
|
}
|