xref: /openbmc/linux/arch/arm/mm/proc-arm9tdmi.S (revision e8f6f3b4) 
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/hwcap.h>
16#include <asm/pgtable-hwdef.h>
17#include <asm/pgtable.h>
18#include <asm/ptrace.h>
19
20#include "proc-macros.S"
21
22	.text
23/*
24 * cpu_arm9tdmi_proc_init()
25 * cpu_arm9tdmi_do_idle()
26 * cpu_arm9tdmi_dcache_clean_area()
27 * cpu_arm9tdmi_switch_mm()
28 *
29 * These are not required.
30 */
31ENTRY(cpu_arm9tdmi_proc_init)
32ENTRY(cpu_arm9tdmi_do_idle)
33ENTRY(cpu_arm9tdmi_dcache_clean_area)
34ENTRY(cpu_arm9tdmi_switch_mm)
35		ret	lr
36
37/*
38 * cpu_arm9tdmi_proc_fin()
39 */
40ENTRY(cpu_arm9tdmi_proc_fin)
41		ret	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		.pushsection	.idmap.text, "ax"
49ENTRY(cpu_arm9tdmi_reset)
50		ret	r0
51ENDPROC(cpu_arm9tdmi_reset)
52		.popsection
53
54		.type	__arm9tdmi_setup, #function
55__arm9tdmi_setup:
56		ret	lr
57		.size	__arm9tdmi_setup, . - __arm9tdmi_setup
58
59		__INITDATA
60
61		@ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
62		define_processor_functions arm9tdmi, dabort=nommu_early_abort, pabort=legacy_pabort, nommu=1
63
64		.section ".rodata"
65
66		string	cpu_arch_name, "armv4t"
67		string	cpu_elf_name, "v4"
68		string	cpu_arm9tdmi_name, "ARM9TDMI"
69		string	cpu_p2001_name, "P2001"
70
71		.align
72
73		.section ".proc.info.init", #alloc, #execinstr
74
75.macro arm9tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req
76		.type	__\name\()_proc_info, #object
77__\name\()_proc_info:
78		.long	\cpu_val
79		.long	\cpu_mask
80		.long	0
81		.long	0
82		b	__arm9tdmi_setup
83		.long	cpu_arch_name
84		.long	cpu_elf_name
85		.long	HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
86		.long	\cpu_name
87		.long	arm9tdmi_processor_functions
88		.long	0
89		.long	0
90		.long	v4_cache_fns
91		.size	__\name\()_proc_info, . - __\name\()_proc_info
92.endm
93
94	arm9tdmi_proc_info arm9tdmi, 0x41009900, 0xfff8ff00, cpu_arm9tdmi_name
95	arm9tdmi_proc_info p2001, 0x41029000, 0xffffffff, cpu_p2001_name
96