1/*
2 *  linux/arch/cris/mm/init.c
3 *
4 *  Copyright (C) 1995  Linus Torvalds
5 *  Copyright (C) 2000,2001  Axis Communications AB
6 *
7 *  Authors:  Bjorn Wesen (bjornw@axis.com)
8 *
9 */
10
11#include <linux/gfp.h>
12#include <linux/init.h>
13#include <linux/bootmem.h>
14#include <linux/proc_fs.h>
15#include <linux/kcore.h>
16#include <asm/tlb.h>
17#include <asm/sections.h>
18
19unsigned long empty_zero_page;
20EXPORT_SYMBOL(empty_zero_page);
21
22void __init mem_init(void)
23{
24	BUG_ON(!mem_map);
25
26	/* max/min_low_pfn was set by setup.c
27	 * now we just copy it to some other necessary places...
28	 *
29	 * high_memory was also set in setup.c
30	 */
31	max_mapnr = max_low_pfn - min_low_pfn;
32        free_all_bootmem();
33	mem_init_print_info(NULL);
34}
35
36/* Free a range of init pages. Virtual addresses. */
37
38void free_init_pages(const char *what, unsigned long begin, unsigned long end)
39{
40	unsigned long addr;
41
42	for (addr = begin; addr < end; addr += PAGE_SIZE) {
43		ClearPageReserved(virt_to_page(addr));
44		init_page_count(virt_to_page(addr));
45		free_page(addr);
46		totalram_pages++;
47	}
48
49	printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
50}
51
52/* Free the pages occupied by initialization code. */
53
54void free_initmem(void)
55{
56	free_initmem_default(-1);
57}
58
59/* Free the pages occupied by initrd code. */
60
61#ifdef CONFIG_BLK_DEV_INITRD
62void free_initrd_mem(unsigned long start, unsigned long end)
63{
64	free_init_pages("initrd memory",
65	                start,
66	                end);
67}
68#endif
69