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1 | /* |
2 | * linux/arch/arm/mm/proc-arm9tdmi.S: utility functions for ARM9TDMI | |
3 | * | |
4 | * Copyright (C) 2003-2006 Hyok S. Choi <hyok.choi@samsung.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | */ | |
11 | #include <linux/linkage.h> | |
12 | #include <linux/init.h> | |
13 | #include <asm/assembler.h> | |
14 | #include <asm/asm-offsets.h> | |
ee90dabc | 15 | #include <asm/elf.h> |
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16 | #include <asm/pgtable-hwdef.h> |
17 | #include <asm/pgtable.h> | |
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18 | #include <asm/ptrace.h> |
19 | ||
20 | .text | |
21 | /* | |
22 | * cpu_arm9tdmi_proc_init() | |
23 | * cpu_arm9tdmi_do_idle() | |
24 | * cpu_arm9tdmi_dcache_clean_area() | |
25 | * cpu_arm9tdmi_switch_mm() | |
26 | * | |
27 | * These are not required. | |
28 | */ | |
29 | ENTRY(cpu_arm9tdmi_proc_init) | |
30 | ENTRY(cpu_arm9tdmi_do_idle) | |
31 | ENTRY(cpu_arm9tdmi_dcache_clean_area) | |
32 | ENTRY(cpu_arm9tdmi_switch_mm) | |
33 | mov pc, lr | |
34 | ||
35 | /* | |
36 | * cpu_arm9tdmi_proc_fin() | |
37 | */ | |
38 | ENTRY(cpu_arm9tdmi_proc_fin) | |
39 | mov r0, #PSR_F_BIT | PSR_I_BIT | SVC_MODE | |
40 | msr cpsr_c, r0 | |
41 | mov pc, lr | |
42 | ||
43 | /* | |
44 | * Function: cpu_arm9tdmi_reset(loc) | |
45 | * Params : loc(r0) address to jump to | |
46 | * Purpose : Sets up everything for a reset and jump to the location for soft reset. | |
47 | */ | |
48 | ENTRY(cpu_arm9tdmi_reset) | |
49 | mov pc, r0 | |
50 | ||
51 | __INIT | |
52 | ||
53 | .type __arm9tdmi_setup, #function | |
54 | __arm9tdmi_setup: | |
55 | mov pc, lr | |
56 | .size __arm9tdmi_setup, . - __arm9tdmi_setup | |
57 | ||
58 | __INITDATA | |
59 | ||
60 | /* | |
61 | * Purpose : Function pointers used to access above functions - all calls | |
62 | * come through these | |
63 | */ | |
64 | .type arm9tdmi_processor_functions, #object | |
65 | ENTRY(arm9tdmi_processor_functions) | |
0f45d7f3 | 66 | .word nommu_early_abort |
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67 | .word cpu_arm9tdmi_proc_init |
68 | .word cpu_arm9tdmi_proc_fin | |
69 | .word cpu_arm9tdmi_reset | |
70 | .word cpu_arm9tdmi_do_idle | |
71 | .word cpu_arm9tdmi_dcache_clean_area | |
72 | .word cpu_arm9tdmi_switch_mm | |
73 | .word 0 @ cpu_*_set_pte | |
74 | .size arm9tdmi_processor_functions, . - arm9tdmi_processor_functions | |
75 | ||
76 | .section ".rodata" | |
77 | ||
78 | .type cpu_arch_name, #object | |
79 | cpu_arch_name: | |
80 | .asciz "armv4t" | |
81 | .size cpu_arch_name, . - cpu_arch_name | |
82 | ||
83 | .type cpu_elf_name, #object | |
84 | cpu_elf_name: | |
85 | .asciz "v4" | |
86 | .size cpu_elf_name, . - cpu_elf_name | |
87 | ||
88 | .type cpu_arm9tdmi_name, #object | |
89 | cpu_arm9tdmi_name: | |
90 | .asciz "ARM9TDMI" | |
91 | .size cpu_arm9tdmi_name, . - cpu_arm9tdmi_name | |
92 | ||
93 | .type cpu_p2001_name, #object | |
94 | cpu_p2001_name: | |
95 | .asciz "P2001" | |
96 | .size cpu_p2001_name, . - cpu_p2001_name | |
97 | ||
98 | .align | |
99 | ||
100 | .section ".proc.info.init", #alloc, #execinstr | |
101 | ||
102 | .type __arm9tdmi_proc_info, #object | |
103 | __arm9tdmi_proc_info: | |
104 | .long 0x41009900 | |
105 | .long 0xfff8ff00 | |
106 | .long 0 | |
107 | .long 0 | |
108 | b __arm9tdmi_setup | |
109 | .long cpu_arch_name | |
110 | .long cpu_elf_name | |
111 | .long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT | |
112 | .long cpu_arm9tdmi_name | |
113 | .long arm9tdmi_processor_functions | |
114 | .long 0 | |
115 | .long 0 | |
116 | .long v4_cache_fns | |
117 | .size __arm9tdmi_proc_info, . - __arm9dmi_proc_info | |
118 | ||
119 | .type __p2001_proc_info, #object | |
120 | __p2001_proc_info: | |
121 | .long 0x41029000 | |
122 | .long 0xffffffff | |
123 | .long 0 | |
124 | .long 0 | |
125 | b __arm9tdmi_setup | |
126 | .long cpu_arch_name | |
127 | .long cpu_elf_name | |
128 | .long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT | |
129 | .long cpu_p2001_name | |
130 | .long arm9tdmi_processor_functions | |
131 | .long 0 | |
132 | .long 0 | |
133 | .long v4_cache_fns | |
134 | .size __p2001_proc_info, . - __p2001_proc_info |