xref: /openbmc/linux/arch/arm/mm/proc-arm7tdmi.S (revision 70342287) 
1/*
2 *  linux/arch/arm/mm/proc-arm7tdmi.S: utility functions for ARM7TDMI
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_arm7tdmi_proc_init()
25 * cpu_arm7tdmi_do_idle()
26 * cpu_arm7tdmi_dcache_clean_area()
27 * cpu_arm7tdmi_switch_mm()
28 *
29 * These are not required.
30 */
31ENTRY(cpu_arm7tdmi_proc_init)
32ENTRY(cpu_arm7tdmi_do_idle)
33ENTRY(cpu_arm7tdmi_dcache_clean_area)
34ENTRY(cpu_arm7tdmi_switch_mm)
35		mov	pc, lr
36
37/*
38 * cpu_arm7tdmi_proc_fin()
39 */
40ENTRY(cpu_arm7tdmi_proc_fin)
41		mov	pc, lr
42
43/*
44 * Function: cpu_arm7tdmi_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_arm7tdmi_reset)
50		mov	pc, r0
51ENDPROC(cpu_arm7tdmi_reset)
52		.popsection
53
54		__CPUINIT
55
56		.type	__arm7tdmi_setup, #function
57__arm7tdmi_setup:
58		mov	pc, lr
59		.size	__arm7tdmi_setup, . - __arm7tdmi_setup
60
61		__INITDATA
62
63		@ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
64		define_processor_functions arm7tdmi, dabort=v4t_late_abort, pabort=legacy_pabort, nommu=1
65
66		.section ".rodata"
67
68		string	cpu_arch_name, "armv4t"
69		string	cpu_elf_name, "v4"
70		string	cpu_arm7tdmi_name, "ARM7TDMI"
71		string	cpu_triscenda7_name, "Triscend-A7x"
72		string	cpu_at91_name, "Atmel-AT91M40xxx"
73		string	cpu_s3c3410_name, "Samsung-S3C3410"
74		string	cpu_s3c44b0x_name, "Samsung-S3C44B0x"
75		string	cpu_s3c4510b_name, "Samsung-S3C4510B"
76		string	cpu_s3c4530_name, "Samsung-S3C4530"
77		string	cpu_netarm_name, "NETARM"
78
79		.align
80
81		.section ".proc.info.init", #alloc, #execinstr
82
83.macro arm7tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, \
84	extra_hwcaps=0
85		.type	__\name\()_proc_info, #object
86__\name\()_proc_info:
87		.long	\cpu_val
88		.long	\cpu_mask
89		.long	0
90		.long	0
91		b	__arm7tdmi_setup
92		.long	cpu_arch_name
93		.long	cpu_elf_name
94		.long	HWCAP_SWP | HWCAP_26BIT | ( \extra_hwcaps )
95		.long	\cpu_name
96		.long	arm7tdmi_processor_functions
97		.long	0
98		.long	0
99		.long	v4_cache_fns
100		.size	__\name\()_proc_info, . - __\name\()_proc_info
101.endm
102
103		arm7tdmi_proc_info arm7tdmi, 0x41007700, 0xfff8ff00, \
104			cpu_arm7tdmi_name
105		arm7tdmi_proc_info triscenda7, 0x0001d2ff, 0x0001ffff, \
106			cpu_triscenda7_name, extra_hwcaps=HWCAP_THUMB
107		arm7tdmi_proc_info at91, 0x14000040, 0xfff000e0, \
108			cpu_at91_name, extra_hwcaps=HWCAP_THUMB
109		arm7tdmi_proc_info s3c4510b, 0x36365000, 0xfffff000, \
110			cpu_s3c4510b_name, extra_hwcaps=HWCAP_THUMB
111		arm7tdmi_proc_info s3c4530, 0x4c000000, 0xfff000e0, \
112			cpu_s3c4530_name, extra_hwcaps=HWCAP_THUMB
113		arm7tdmi_proc_info s3c3410, 0x34100000, 0xffff0000, \
114			cpu_s3c3410_name, extra_hwcaps=HWCAP_THUMB
115		arm7tdmi_proc_info s3c44b0x, 0x44b00000, 0xffff0000, \
116			cpu_s3c44b0x_name, extra_hwcaps=HWCAP_THUMB
117