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 | */ |
27 | ENTRY(cpu_arm9tdmi_proc_init) |
28 | ENTRY(cpu_arm9tdmi_do_idle) |
29 | ENTRY(cpu_arm9tdmi_dcache_clean_area) |
30 | ENTRY(cpu_arm9tdmi_switch_mm) |
31 | ret lr |
32 | |
33 | /* |
34 | * cpu_arm9tdmi_proc_fin() |
35 | */ |
36 | ENTRY(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" |
45 | ENTRY(cpu_arm9tdmi_reset) |
46 | ret r0 |
47 | ENDPROC(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 | |