Commit | Line | Data |
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1da177e4 LT |
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 | * | |
1da177e4 LT |
9 | */ |
10 | ||
5a0e3ad6 | 11 | #include <linux/gfp.h> |
1da177e4 LT |
12 | #include <linux/init.h> |
13 | #include <linux/bootmem.h> | |
80d6170a JN |
14 | #include <linux/proc_fs.h> |
15 | #include <linux/kcore.h> | |
1da177e4 | 16 | #include <asm/tlb.h> |
2e529815 | 17 | #include <asm/sections.h> |
1da177e4 | 18 | |
1da177e4 | 19 | unsigned long empty_zero_page; |
80d6170a | 20 | EXPORT_SYMBOL(empty_zero_page); |
1da177e4 | 21 | |
80d6170a | 22 | void __init mem_init(void) |
1da177e4 | 23 | { |
59b97760 | 24 | BUG_ON(!mem_map); |
1da177e4 LT |
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 | */ | |
4e422de9 | 31 | max_mapnr = max_low_pfn - min_low_pfn; |
0c988534 | 32 | free_all_bootmem(); |
4e422de9 | 33 | mem_init_print_info(NULL); |
1da177e4 LT |
34 | } |
35 | ||
80d6170a | 36 | /* Free a range of init pages. Virtual addresses. */ |
1da177e4 | 37 | |
80d6170a JN |
38 | void 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 | ||
54 | void free_initmem(void) | |
1da177e4 | 55 | { |
dbe67df4 | 56 | free_initmem_default(-1); |
1da177e4 | 57 | } |
80d6170a JN |
58 | |
59 | /* Free the pages occupied by initrd code. */ | |
60 | ||
61 | #ifdef CONFIG_BLK_DEV_INITRD | |
62 | void free_initrd_mem(unsigned long start, unsigned long end) | |
63 | { | |
64 | free_init_pages("initrd memory", | |
65 | start, | |
66 | end); | |
67 | } | |
68 | #endif |