/* * * BRIEF MODULE DESCRIPTION *	IT8172/QED5231 board setup. * * Copyright 2000 MontaVista Software Inc. * Author: MontaVista Software, Inc. *         	ppopov@mvista.com or source@mvista.com * *  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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT, *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * *  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 <linux/init.h>#include <linux/mm.h>#include <linux/sched.h>#include <linux/bootmem.h>#include <asm/addrspace.h>#include <asm/bootinfo.h>#include <linux/config.h>#include <linux/string.h>#include <linux/kernel.h>#include <linux/sched.h>#include <asm/it8172/it8172.h>#include <asm/it8172/it8172_dbg.h>int prom_argc;char **prom_argv, **prom_envp;extern char _end;extern void  __init prom_init_cmdline(void);extern unsigned long __init prom_get_memsize(void);extern void __init it8172_init_ram_resource(unsigned long memsize);#define PFN_UP(x)	(((x) + PAGE_SIZE-1) >> PAGE_SHIFT)#define PFN_ALIGN(x)	(((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)int __init prom_init(int argc, char **argv, char **envp, int *prom_vec){	unsigned long mem_size;	unsigned long pcicr;	prom_argc = argc;	prom_argv = argv;	prom_envp = envp;	puts("ITE board running...");	mips_machgroup = MACH_GROUP_ITE;	mips_machtype = MACH_QED_4N_S01B;  /* ITE board name/number */	prom_init_cmdline();	mem_size = prom_get_memsize();	printk("Memory size: %dMB\n", (unsigned)mem_size);	mem_size <<= 20; /* MB */	/*	 * make the entire physical memory visible to pci bus masters	 */	IT_READ(IT_MC_PCICR, pcicr);	pcicr &= ~0x1f; 	pcicr |= (mem_size - 1) >> 22;	IT_WRITE(IT_MC_PCICR, pcicr);	it8172_init_ram_resource(mem_size);	add_memory_region(0, mem_size, BOOT_MEM_RAM);	return 0;}