diff options
Diffstat (limited to 'arch/m68k/mm/init.c')
-rw-r--r-- | arch/m68k/mm/init.c | 153 |
1 files changed, 4 insertions, 149 deletions
diff --git a/arch/m68k/mm/init.c b/arch/m68k/mm/init.c index 8bc842554e5b..27b5ce089a34 100644 --- a/arch/m68k/mm/init.c +++ b/arch/m68k/mm/init.c | |||
@@ -1,150 +1,5 @@ | |||
1 | /* | 1 | #ifdef CONFIG_MMU |
2 | * linux/arch/m68k/mm/init.c | 2 | #include "init_mm.c" |
3 | * | 3 | #else |
4 | * Copyright (C) 1995 Hamish Macdonald | 4 | #include "init_no.c" |
5 | * | ||
6 | * Contains common initialization routines, specific init code moved | ||
7 | * to motorola.c and sun3mmu.c | ||
8 | */ | ||
9 | |||
10 | #include <linux/module.h> | ||
11 | #include <linux/signal.h> | ||
12 | #include <linux/sched.h> | ||
13 | #include <linux/mm.h> | ||
14 | #include <linux/swap.h> | ||
15 | #include <linux/kernel.h> | ||
16 | #include <linux/string.h> | ||
17 | #include <linux/types.h> | ||
18 | #include <linux/init.h> | ||
19 | #include <linux/bootmem.h> | ||
20 | #include <linux/gfp.h> | ||
21 | |||
22 | #include <asm/setup.h> | ||
23 | #include <asm/uaccess.h> | ||
24 | #include <asm/page.h> | ||
25 | #include <asm/pgalloc.h> | ||
26 | #include <asm/system.h> | ||
27 | #include <asm/machdep.h> | ||
28 | #include <asm/io.h> | ||
29 | #ifdef CONFIG_ATARI | ||
30 | #include <asm/atari_stram.h> | ||
31 | #endif | ||
32 | #include <asm/sections.h> | ||
33 | #include <asm/tlb.h> | ||
34 | |||
35 | DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); | ||
36 | |||
37 | pg_data_t pg_data_map[MAX_NUMNODES]; | ||
38 | EXPORT_SYMBOL(pg_data_map); | ||
39 | |||
40 | int m68k_virt_to_node_shift; | ||
41 | |||
42 | #ifndef CONFIG_SINGLE_MEMORY_CHUNK | ||
43 | pg_data_t *pg_data_table[65]; | ||
44 | EXPORT_SYMBOL(pg_data_table); | ||
45 | #endif | ||
46 | |||
47 | void __init m68k_setup_node(int node) | ||
48 | { | ||
49 | #ifndef CONFIG_SINGLE_MEMORY_CHUNK | ||
50 | struct mem_info *info = m68k_memory + node; | ||
51 | int i, end; | ||
52 | |||
53 | i = (unsigned long)phys_to_virt(info->addr) >> __virt_to_node_shift(); | ||
54 | end = (unsigned long)phys_to_virt(info->addr + info->size - 1) >> __virt_to_node_shift(); | ||
55 | for (; i <= end; i++) { | ||
56 | if (pg_data_table[i]) | ||
57 | printk("overlap at %u for chunk %u\n", i, node); | ||
58 | pg_data_table[i] = pg_data_map + node; | ||
59 | } | ||
60 | #endif | ||
61 | pg_data_map[node].bdata = bootmem_node_data + node; | ||
62 | node_set_online(node); | ||
63 | } | ||
64 | |||
65 | |||
66 | /* | ||
67 | * ZERO_PAGE is a special page that is used for zero-initialized | ||
68 | * data and COW. | ||
69 | */ | ||
70 | |||
71 | void *empty_zero_page; | ||
72 | EXPORT_SYMBOL(empty_zero_page); | ||
73 | |||
74 | extern void init_pointer_table(unsigned long ptable); | ||
75 | |||
76 | /* References to section boundaries */ | ||
77 | |||
78 | extern pmd_t *zero_pgtable; | ||
79 | |||
80 | void __init mem_init(void) | ||
81 | { | ||
82 | pg_data_t *pgdat; | ||
83 | int codepages = 0; | ||
84 | int datapages = 0; | ||
85 | int initpages = 0; | ||
86 | int i; | ||
87 | |||
88 | #ifdef CONFIG_ATARI | ||
89 | if (MACH_IS_ATARI) | ||
90 | atari_stram_mem_init_hook(); | ||
91 | #endif | ||
92 | |||
93 | /* this will put all memory onto the freelists */ | ||
94 | totalram_pages = num_physpages = 0; | ||
95 | for_each_online_pgdat(pgdat) { | ||
96 | num_physpages += pgdat->node_present_pages; | ||
97 | |||
98 | totalram_pages += free_all_bootmem_node(pgdat); | ||
99 | for (i = 0; i < pgdat->node_spanned_pages; i++) { | ||
100 | struct page *page = pgdat->node_mem_map + i; | ||
101 | char *addr = page_to_virt(page); | ||
102 | |||
103 | if (!PageReserved(page)) | ||
104 | continue; | ||
105 | if (addr >= _text && | ||
106 | addr < _etext) | ||
107 | codepages++; | ||
108 | else if (addr >= __init_begin && | ||
109 | addr < __init_end) | ||
110 | initpages++; | ||
111 | else | ||
112 | datapages++; | ||
113 | } | ||
114 | } | ||
115 | |||
116 | #ifndef CONFIG_SUN3 | ||
117 | /* insert pointer tables allocated so far into the tablelist */ | ||
118 | init_pointer_table((unsigned long)kernel_pg_dir); | ||
119 | for (i = 0; i < PTRS_PER_PGD; i++) { | ||
120 | if (pgd_present(kernel_pg_dir[i])) | ||
121 | init_pointer_table(__pgd_page(kernel_pg_dir[i])); | ||
122 | } | ||
123 | |||
124 | /* insert also pointer table that we used to unmap the zero page */ | ||
125 | if (zero_pgtable) | ||
126 | init_pointer_table((unsigned long)zero_pgtable); | ||
127 | #endif | ||
128 | |||
129 | printk("Memory: %luk/%luk available (%dk kernel code, %dk data, %dk init)\n", | ||
130 | nr_free_pages() << (PAGE_SHIFT-10), | ||
131 | totalram_pages << (PAGE_SHIFT-10), | ||
132 | codepages << (PAGE_SHIFT-10), | ||
133 | datapages << (PAGE_SHIFT-10), | ||
134 | initpages << (PAGE_SHIFT-10)); | ||
135 | } | ||
136 | |||
137 | #ifdef CONFIG_BLK_DEV_INITRD | ||
138 | void free_initrd_mem(unsigned long start, unsigned long end) | ||
139 | { | ||
140 | int pages = 0; | ||
141 | for (; start < end; start += PAGE_SIZE) { | ||
142 | ClearPageReserved(virt_to_page(start)); | ||
143 | init_page_count(virt_to_page(start)); | ||
144 | free_page(start); | ||
145 | totalram_pages++; | ||
146 | pages++; | ||
147 | } | ||
148 | printk ("Freeing initrd memory: %dk freed\n", pages); | ||
149 | } | ||
150 | #endif | 5 | #endif |