1 /* 2 * Written by: Patricia Gaughen <gone@us.ibm.com>, IBM Corporation 3 * August 2002: added remote node KVA remap - Martin J. Bligh 4 * 5 * Copyright (C) 2002, IBM Corp. 6 * 7 * All rights reserved. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, but 15 * WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 17 * NON INFRINGEMENT. See the GNU General Public License for more 18 * details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 23 */ 24 25 #include <linux/memblock.h> 26 #include <linux/init.h> 27 #include <linux/vmalloc.h> 28 #include <asm/pgtable_areas.h> 29 30 #include "numa_internal.h" 31 32 extern unsigned long highend_pfn, highstart_pfn; 33 34 void __init initmem_init(void) 35 { 36 x86_numa_init(); 37 38 #ifdef CONFIG_HIGHMEM 39 highstart_pfn = highend_pfn = max_pfn; 40 if (max_pfn > max_low_pfn) 41 highstart_pfn = max_low_pfn; 42 printk(KERN_NOTICE "%ldMB HIGHMEM available.\n", 43 pages_to_mb(highend_pfn - highstart_pfn)); 44 high_memory = (void *) __va(highstart_pfn * PAGE_SIZE - 1) + 1; 45 #else 46 high_memory = (void *) __va(max_low_pfn * PAGE_SIZE - 1) + 1; 47 #endif 48 printk(KERN_NOTICE "%ldMB LOWMEM available.\n", 49 pages_to_mb(max_low_pfn)); 50 printk(KERN_DEBUG "max_low_pfn = %lx, highstart_pfn = %lx\n", 51 max_low_pfn, highstart_pfn); 52 53 printk(KERN_DEBUG "Low memory ends at vaddr %08lx\n", 54 (ulong) pfn_to_kaddr(max_low_pfn)); 55 56 printk(KERN_DEBUG "High memory starts at vaddr %08lx\n", 57 (ulong) pfn_to_kaddr(highstart_pfn)); 58 59 __vmalloc_start_set = true; 60 setup_bootmem_allocator(); 61 } 62