1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * linux/arch/arm/mm/proc-arm9tdmi.S: utility functions for ARM9TDMI
4 *
5 * Copyright (C) 2003-2006 Hyok S. Choi <hyok.choi@samsung.com>
6 */
7#include <linux/linkage.h>
8#include <linux/init.h>
9#include <linux/pgtable.h>
10#include <asm/assembler.h>
11#include <asm/asm-offsets.h>
12#include <asm/hwcap.h>
13#include <asm/pgtable-hwdef.h>
14#include <asm/ptrace.h>
15
16#include "proc-macros.S"
17
18 .text
19/*
20 * cpu_arm9tdmi_proc_init()
21 * cpu_arm9tdmi_do_idle()
22 * cpu_arm9tdmi_dcache_clean_area()
23 * cpu_arm9tdmi_switch_mm()
24 *
25 * These are not required.
26 */
27ENTRY(cpu_arm9tdmi_proc_init)
28ENTRY(cpu_arm9tdmi_do_idle)
29ENTRY(cpu_arm9tdmi_dcache_clean_area)
30ENTRY(cpu_arm9tdmi_switch_mm)
31 ret lr
32
33/*
34 * cpu_arm9tdmi_proc_fin()
35 */
36ENTRY(cpu_arm9tdmi_proc_fin)
37 ret lr
38
39/*
40 * Function: cpu_arm9tdmi_reset(loc)
41 * Params : loc(r0) address to jump to
42 * Purpose : Sets up everything for a reset and jump to the location for soft reset.
43 */
44 .pushsection .idmap.text, "ax"
45ENTRY(cpu_arm9tdmi_reset)
46 ret r0
47ENDPROC(cpu_arm9tdmi_reset)
48 .popsection
49
50 .type __arm9tdmi_setup, #function
51__arm9tdmi_setup:
52 ret lr
53 .size __arm9tdmi_setup, . - __arm9tdmi_setup
54
55 __INITDATA
56
57 @ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
58 define_processor_functions arm9tdmi, dabort=nommu_early_abort, pabort=legacy_pabort, nommu=1
59
60 .section ".rodata"
61
62 string cpu_arch_name, "armv4t"
63 string cpu_elf_name, "v4"
64 string cpu_arm9tdmi_name, "ARM9TDMI"
65 string cpu_p2001_name, "P2001"
66
67 .align
68
69 .section ".proc.info.init", "a"
70
71.macro arm9tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req
72 .type __\name\()_proc_info, #object
73__\name\()_proc_info:
74 .long \cpu_val
75 .long \cpu_mask
76 .long 0
77 .long 0
78 initfn __arm9tdmi_setup, __\name\()_proc_info
79 .long cpu_arch_name
80 .long cpu_elf_name
81 .long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
82 .long \cpu_name
83 .long arm9tdmi_processor_functions
84 .long 0
85 .long 0
86 .long v4_cache_fns
87 .size __\name\()_proc_info, . - __\name\()_proc_info
88.endm
89
90 arm9tdmi_proc_info arm9tdmi, 0x41009900, 0xfff8ff00, cpu_arm9tdmi_name
91 arm9tdmi_proc_info p2001, 0x41029000, 0xffffffff, cpu_p2001_name
92

source code of linux/arch/arm/mm/proc-arm9tdmi.S