11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* init.c: memory initialisation for FRV 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Written by David Howells (dhowells@redhat.com) 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * modify it under the terms of the GNU General Public License 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * as published by the Free Software Foundation; either version 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2 of the License, or (at your option) any later version. 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Derived from: 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - linux/arch/m68knommu/mm/init.c 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>, Kenneth Albanowski <kjahds@kjahds.com>, 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Copyright (C) 2000 Lineo, Inc. (www.lineo.com) 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - linux/arch/m68k/mm/init.c 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * - Copyright (C) 1995 Hamish Macdonald 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/signal.h> 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sched.h> 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/pagemap.h> 225a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/gfp.h> 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/swap.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mm.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/string.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/types.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/bootmem.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/highmem.h> 30fb56f0f9922d3fb2c5503cdc346dc3f86c897bc4Adrian Bunk#include <linux/module.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/setup.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/segment.h> 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/page.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/pgtable.h> 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/mmu_context.h> 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/virtconvert.h> 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/sections.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/tlb.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#undef DEBUG 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * BAD_PAGE is the page that is used for page faults when linux 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * is out-of-memory. Older versions of linux just did a 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * do_exit(), but using this instead means there is less risk 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for a process dying in kernel mode, possibly leaving a inode 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * unused etc.. 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * BAD_PAGETABLE is the accompanying page-table: it is initialized 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * to point to BAD_PAGE entries. 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ZERO_PAGE is a special page that is used for zero-initialized 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * data and COW. 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic unsigned long empty_bad_page_table; 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic unsigned long empty_bad_page; 58fb56f0f9922d3fb2c5503cdc346dc3f86c897bc4Adrian Bunk 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsunsigned long empty_zero_page; 60fb56f0f9922d3fb2c5503cdc346dc3f86c897bc4Adrian BunkEXPORT_SYMBOL(empty_zero_page); 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*****************************************************************************/ 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * paging_init() continues the virtual memory environment setup which 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * was begun by the code in arch/head.S. 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The parameters are pointers to where to stick the starting and ending 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * addresses of available kernel virtual memory. 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid __init paging_init(void) 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 71f06a96844a577c43249fce25809a4fae07407f46Christoph Lameter unsigned long zones_size[MAX_NR_ZONES] = {0, }; 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* allocate some pages for kernel housekeeping tasks */ 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds empty_bad_page_table = (unsigned long) alloc_bootmem_pages(PAGE_SIZE); 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds empty_bad_page = (unsigned long) alloc_bootmem_pages(PAGE_SIZE); 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds empty_zero_page = (unsigned long) alloc_bootmem_pages(PAGE_SIZE); 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset((void *) empty_zero_page, 0, PAGE_SIZE); 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 808080f231224ccd3169f39e73fd750ba98d5b98a7David Howells#ifdef CONFIG_HIGHMEM 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (num_physpages - num_mappedpages) { 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pgd_t *pge; 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pud_t *pue; 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pmd_t *pme; 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pkmap_page_table = alloc_bootmem_pages(PAGE_SIZE); 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pge = swapper_pg_dir + pgd_index_k(PKMAP_BASE); 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pue = pud_offset(pge, PKMAP_BASE); 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pme = pmd_offset(pue, PKMAP_BASE); 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __set_pmd(pme, virt_to_phys(pkmap_page_table) | _PAGE_TABLE); 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* distribute the allocatable pages across the various zones and pass them to the allocator 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 97fa6427542cfd2811f48186c68057273c6537f261David Howells zones_size[ZONE_NORMAL] = max_low_pfn - min_low_pfn; 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_HIGHMEM 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds zones_size[ZONE_HIGHMEM] = num_physpages - num_mappedpages; 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_area_init(zones_size); 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_MMU 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* initialise init's MMU context */ 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_new_context(&init_task, &init_mm); 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} /* end paging_init() */ 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*****************************************************************************/ 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid __init mem_init(void) 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long npages = (memory_end - memory_start) >> PAGE_SHIFT; 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long tmp; 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_MMU 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long loop, pfn; 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int datapages = 0; 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int codek = 0, datak = 0; 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* this will put all memory onto the freelists */ 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds totalram_pages = free_all_bootmem(); 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_MMU 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (loop = 0 ; loop < npages ; loop++) 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (PageReserved(&mem_map[loop])) 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds datapages++; 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_HIGHMEM 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (pfn = num_physpages - 1; pfn >= num_mappedpages; pfn--) { 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct page *page = &mem_map[pfn]; 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ClearPageReserved(page); 1387835e98b2e3c66dba79cb0ff8ebb90a2fe030c29Nick Piggin init_page_count(page); 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __free_page(page); 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds totalram_pages++; 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds codek = ((unsigned long) &_etext - (unsigned long) &_stext) >> 10; 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds datak = datapages << (PAGE_SHIFT - 10); 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#else 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds codek = (_etext - _stext) >> 10; 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds datak = 0; //(_ebss - _sdata) >> 10; 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp = nr_free_pages() << PAGE_SHIFT; 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Memory available: %luKiB/%luKiB RAM, %luKiB/%luKiB ROM (%dKiB kernel code, %dKiB data)\n", 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp >> 10, 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds npages << (PAGE_SHIFT - 10), 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (rom_length > 0) ? ((rom_length >> 10) - codek) : 0, 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rom_length >> 10, 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds codek, 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds datak 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ); 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} /* end mem_init() */ 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*****************************************************************************/ 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * free the memory that was only required for initialisation 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 168e4fc5a1a2acab67867c9858cd4c8e9abb5b242f7David Howellsvoid free_initmem(void) 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if defined(CONFIG_RAMKERNEL) && !defined(CONFIG_PROTECT_KERNEL) 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long start, end, addr; 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds start = PAGE_ALIGN((unsigned long) &__init_begin); /* round up */ 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds end = ((unsigned long) &__init_end) & PAGE_MASK; /* round down */ 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* next to check that the page we free is not a partial page */ 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (addr = start; addr < end; addr += PAGE_SIZE) { 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ClearPageReserved(virt_to_page(addr)); 1797835e98b2e3c66dba79cb0ff8ebb90a2fe030c29Nick Piggin init_page_count(virt_to_page(addr)); 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_page(addr); 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds totalram_pages++; 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Freeing unused kernel memory: %ldKiB freed (0x%lx - 0x%lx)\n", 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (end - start) >> 10, start, end); 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} /* end free_initmem() */ 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*****************************************************************************/ 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * free the initial ramdisk memory 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef CONFIG_BLK_DEV_INITRD 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsvoid __init free_initrd_mem(unsigned long start, unsigned long end) 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int pages = 0; 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (; start < end; start += PAGE_SIZE) { 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ClearPageReserved(virt_to_page(start)); 1997835e98b2e3c66dba79cb0ff8ebb90a2fe030c29Nick Piggin init_page_count(virt_to_page(start)); 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds free_page(start); 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds totalram_pages++; 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pages++; 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds printk("Freeing initrd memory: %dKiB freed\n", (pages * PAGE_SIZE) >> 10); 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} /* end free_initrd_mem() */ 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 207