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100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
/*
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* Copyright (C) 2000, 2001 Broadcom Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <linux/config.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/blkdev.h>
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#include <linux/bootmem.h>
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#include <linux/smp.h>
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#include <linux/initrd.h>
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#include <linux/pm.h>
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#include <asm/bootinfo.h>
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#include <asm/reboot.h>
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#define MAX_RAM_SIZE ((CONFIG_SIBYTE_STANDALONE_RAM_SIZE * 1024 * 1024) - 1)
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static __init void prom_meminit(void)
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{
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#ifdef CONFIG_BLK_DEV_INITRD
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unsigned long initrd_pstart;
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unsigned long initrd_pend;
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initrd_pstart = __pa(initrd_start);
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initrd_pend = __pa(initrd_end);
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if (initrd_start &&
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((initrd_pstart > MAX_RAM_SIZE)
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|| (initrd_pend > MAX_RAM_SIZE))) {
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panic("initrd out of addressable memory");
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}
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add_memory_region(0, initrd_pstart,
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BOOT_MEM_RAM);
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add_memory_region(initrd_pstart, initrd_pend - initrd_pstart,
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BOOT_MEM_RESERVED);
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add_memory_region(initrd_pend,
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(CONFIG_SIBYTE_STANDALONE_RAM_SIZE * 1024 * 1024) - initrd_pend,
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BOOT_MEM_RAM);
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#else
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add_memory_region(0, CONFIG_SIBYTE_STANDALONE_RAM_SIZE * 1024 * 1024,
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BOOT_MEM_RAM);
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#endif
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}
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void prom_cpu0_exit(void *unused)
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{
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while (1) ;
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}
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static void prom_linux_exit(void)
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{
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#ifdef CONFIG_SMP
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if (smp_processor_id()) {
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smp_call_function(prom_cpu0_exit,NULL,1,1);
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}
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#endif
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while(1);
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}
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/*
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* prom_init is called just after the cpu type is determined, from setup_arch()
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*/
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void __init prom_init(void)
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{
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_machine_restart = (void (*)(char *))prom_linux_exit;
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_machine_halt = prom_linux_exit;
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pm_power_off = prom_linux_exit;
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strcpy(arcs_cmdline, "root=/dev/ram0 ");
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mips_machgroup = MACH_GROUP_SIBYTE;
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prom_meminit();
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}
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unsigned long __init prom_free_prom_memory(void)
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{
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/* Not sure what I'm supposed to do here. Nothing, I think */
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return 0;
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}
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void prom_putchar(char c)
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{
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}
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