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>
15#include <asm/elf.h>
16#include <asm/pgtable-hwdef.h>
17#include <asm/pgtable.h>
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 */
29ENTRY(cpu_arm9tdmi_proc_init)
30ENTRY(cpu_arm9tdmi_do_idle)
31ENTRY(cpu_arm9tdmi_dcache_clean_area)
32ENTRY(cpu_arm9tdmi_switch_mm)
33		mov	pc, lr
34
35/*
36 * cpu_arm9tdmi_proc_fin()
37 */
38ENTRY(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 */
48ENTRY(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
65ENTRY(arm9tdmi_processor_functions)
66		.word	nommu_early_abort
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
79cpu_arch_name:
80		.asciz	"armv4t"
81		.size	cpu_arch_name, . - cpu_arch_name
82
83		.type	cpu_elf_name, #object
84cpu_elf_name:
85		.asciz	"v4"
86		.size	cpu_elf_name, . - cpu_elf_name
87
88		.type	cpu_arm9tdmi_name, #object
89cpu_arm9tdmi_name:
90		.asciz	"ARM9TDMI"
91		.size	cpu_arm9tdmi_name, . - cpu_arm9tdmi_name
92
93		.type	cpu_p2001_name, #object
94cpu_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
135