| /* |
| * 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) |
| { |
| } |