2 * linux/arch/cris/mm/init.c
4 * Copyright (C) 1995 Linus Torvalds
5 * Copyright (C) 2000,2001 Axis Communications AB
7 * Authors: Bjorn Wesen (bjornw@axis.com)
11 #include <linux/init.h>
12 #include <linux/bootmem.h>
15 DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
17 unsigned long empty_zero_page;
19 extern char _stext, _edata, _etext; /* From linkerscript */
20 extern char __init_begin, __init_end;
25 int codesize, reservedpages, datasize, initsize;
30 /* max/min_low_pfn was set by setup.c
31 * now we just copy it to some other necessary places...
33 * high_memory was also set in setup.c
36 max_mapnr = num_physpages = max_low_pfn - min_low_pfn;
38 /* this will put all memory onto the freelists */
39 totalram_pages = free_all_bootmem();
42 for (tmp = 0; tmp < max_mapnr; tmp++) {
44 * Only count reserved RAM pages
46 if (PageReserved(mem_map + tmp))
50 codesize = (unsigned long) &_etext - (unsigned long) &_stext;
51 datasize = (unsigned long) &_edata - (unsigned long) &_etext;
52 initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
55 "Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, "
57 (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
58 max_mapnr << (PAGE_SHIFT-10),
60 reservedpages << (PAGE_SHIFT-10),
66 /* free the pages occupied by initialization code */
73 addr = (unsigned long)(&__init_begin);
74 for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
75 ClearPageReserved(virt_to_page(addr));
76 init_page_count(virt_to_page(addr));
80 printk (KERN_INFO "Freeing unused kernel memory: %luk freed\n",
81 (unsigned long)((&__init_end - &__init_begin) >> 10));