1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * linux/arch/arm/mm/proc-arm7tdmi.S: utility functions for ARM7TDMI |
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_arm7tdmi_proc_init() |
21 | * cpu_arm7tdmi_do_idle() |
22 | * cpu_arm7tdmi_dcache_clean_area() |
23 | * cpu_arm7tdmi_switch_mm() |
24 | * |
25 | * These are not required. |
26 | */ |
27 | ENTRY(cpu_arm7tdmi_proc_init) |
28 | ENTRY(cpu_arm7tdmi_do_idle) |
29 | ENTRY(cpu_arm7tdmi_dcache_clean_area) |
30 | ENTRY(cpu_arm7tdmi_switch_mm) |
31 | ret lr |
32 | |
33 | /* |
34 | * cpu_arm7tdmi_proc_fin() |
35 | */ |
36 | ENTRY(cpu_arm7tdmi_proc_fin) |
37 | ret lr |
38 | |
39 | /* |
40 | * Function: cpu_arm7tdmi_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_arm7tdmi_reset) |
46 | ret r0 |
47 | ENDPROC(cpu_arm7tdmi_reset) |
48 | .popsection |
49 | |
50 | .type __arm7tdmi_setup, #function |
51 | __arm7tdmi_setup: |
52 | ret lr |
53 | .size __arm7tdmi_setup, . - __arm7tdmi_setup |
54 | |
55 | __INITDATA |
56 | |
57 | @ define struct processor (see <asm/proc-fns.h> and proc-macros.S) |
58 | define_processor_functions arm7tdmi, dabort=v4t_late_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_arm7tdmi_name, "ARM7TDMI" |
65 | string cpu_triscenda7_name, "Triscend-A7x" |
66 | string cpu_at91_name, "Atmel-AT91M40xxx" |
67 | string cpu_s3c3410_name, "Samsung-S3C3410" |
68 | string cpu_s3c44b0x_name, "Samsung-S3C44B0x" |
69 | string cpu_s3c4510b_name, "Samsung-S3C4510B" |
70 | string cpu_s3c4530_name, "Samsung-S3C4530" |
71 | string cpu_netarm_name, "NETARM" |
72 | |
73 | .align |
74 | |
75 | .section ".proc.info.init" , "a" |
76 | |
77 | .macro arm7tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, \ |
78 | extra_hwcaps=0 |
79 | .type __\name\()_proc_info, #object |
80 | __\name\()_proc_info: |
81 | .long \cpu_val |
82 | .long \cpu_mask |
83 | .long 0 |
84 | .long 0 |
85 | initfn __arm7tdmi_setup, __\name\()_proc_info |
86 | .long cpu_arch_name |
87 | .long cpu_elf_name |
88 | .long HWCAP_SWP | HWCAP_26BIT | ( \extra_hwcaps ) |
89 | .long \cpu_name |
90 | .long arm7tdmi_processor_functions |
91 | .long 0 |
92 | .long 0 |
93 | .long v4_cache_fns |
94 | .size __\name\()_proc_info, . - __\name\()_proc_info |
95 | .endm |
96 | |
97 | arm7tdmi_proc_info arm7tdmi, 0x41007700, 0xfff8ff00, \ |
98 | cpu_arm7tdmi_name |
99 | arm7tdmi_proc_info triscenda7, 0x0001d2ff, 0x0001ffff, \ |
100 | cpu_triscenda7_name, extra_hwcaps=HWCAP_THUMB |
101 | arm7tdmi_proc_info at91, 0x14000040, 0xfff000e0, \ |
102 | cpu_at91_name, extra_hwcaps=HWCAP_THUMB |
103 | arm7tdmi_proc_info s3c4510b, 0x36365000, 0xfffff000, \ |
104 | cpu_s3c4510b_name, extra_hwcaps=HWCAP_THUMB |
105 | arm7tdmi_proc_info s3c4530, 0x4c000000, 0xfff000e0, \ |
106 | cpu_s3c4530_name, extra_hwcaps=HWCAP_THUMB |
107 | arm7tdmi_proc_info s3c3410, 0x34100000, 0xffff0000, \ |
108 | cpu_s3c3410_name, extra_hwcaps=HWCAP_THUMB |
109 | arm7tdmi_proc_info s3c44b0x, 0x44b00000, 0xffff0000, \ |
110 | cpu_s3c44b0x_name, extra_hwcaps=HWCAP_THUMB |
111 | |