/* * arch/score/kernel/setup.c * * Score Processor version. * * Copyright (C) 2009 Sunplus Core Technology Co., Ltd. *  Chen Liqin <liqin.chen@sunplusct.com> *  Lennox Wu <lennox.wu@sunplusct.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 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, see the file COPYING, or write * to the Free Software Foundation, Inc., * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */ #include <linux/bootmem.h>#include <linux/initrd.h>#include <linux/ioport.h>#include <linux/memblock.h>#include <linux/mm.h>#include <linux/seq_file.h>#include <linux/screen_info.h> #include <asm-generic/sections.h>#include <asm/setup.h> struct screen_info screen_info;unsigned long kernelsp; static char command_line[COMMAND_LINE_SIZE];static struct resource code_resource = { .name = "Kernel code",};static struct resource data_resource = { .name = "Kernel data",}; static void __init bootmem_init(void){	unsigned long start_pfn, bootmap_size;	unsigned long size = initrd_end - initrd_start; 	start_pfn = PFN_UP(__pa(&_end)); 	min_low_pfn = PFN_UP(MEMORY_START);	max_low_pfn = PFN_UP(MEMORY_START + MEMORY_SIZE);	max_mapnr = max_low_pfn - min_low_pfn; 	/* Initialize the boot-time allocator with low memory only. */	bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn,					 min_low_pfn, max_low_pfn);	memblock_add_node(PFN_PHYS(min_low_pfn),			  PFN_PHYS(max_low_pfn - min_low_pfn), 0); 	free_bootmem(PFN_PHYS(start_pfn),		     (max_low_pfn - start_pfn) << PAGE_SHIFT);	memory_present(0, start_pfn, max_low_pfn); 	/* Reserve space for the bootmem bitmap. */	reserve_bootmem(PFN_PHYS(start_pfn), bootmap_size, BOOTMEM_DEFAULT); 	if (size == 0) {		printk(KERN_INFO "Initrd not found or empty");		goto disable;	} 	if (__pa(initrd_end) > PFN_PHYS(max_low_pfn)) {		printk(KERN_ERR "Initrd extends beyond end of memory");		goto disable;	} 	/* Reserve space for the initrd bitmap. */	reserve_bootmem(__pa(initrd_start), size, BOOTMEM_DEFAULT);	initrd_below_start_ok = 1; 	pr_info("Initial ramdisk at: 0x%lx (%lu bytes)\n",		 initrd_start, size);	return;disable:	printk(KERN_CONT " - disabling initrd\n");	initrd_start = 0;	initrd_end = 0;} static void __init resource_init(void){	struct resource *res; 	code_resource.start = __pa(&_text);	code_resource.end = __pa(&_etext) - 1;	data_resource.start = __pa(&_etext);	data_resource.end = __pa(&_edata) - 1; 	res = alloc_bootmem(sizeof(struct resource));	res->name = "System RAM";	res->start = MEMORY_START;	res->end = MEMORY_START + MEMORY_SIZE - 1;	res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;	request_resource(&iomem_resource, res); 	request_resource(res, &code_resource);	request_resource(res, &data_resource);} void __init setup_arch(char **cmdline_p){	randomize_va_space = 0;	*cmdline_p = command_line; 	cpu_cache_init();	tlb_init();	bootmem_init();	paging_init();	resource_init();} static int show_cpuinfo(struct seq_file *m, void *v){	unsigned long n = (unsigned long) v - 1; 	seq_printf(m, "processor\t\t: %ld\n", n);	seq_printf(m, "\n"); 	return 0;} static void *c_start(struct seq_file *m, loff_t *pos){	unsigned long i = *pos; 	return i < 1 ? (void *) (i + 1) : NULL;} static void *c_next(struct seq_file *m, void *v, loff_t *pos){	++*pos;	return c_start(m, pos);} static void c_stop(struct seq_file *m, void *v){} const struct seq_operations cpuinfo_op = {	.start	= c_start,	.next	= c_next,	.stop	= c_stop,	.show	= show_cpuinfo,}; static int __init topology_init(void){	return 0;} subsys_initcall(topology_init);