| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 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 | */ |
| 31 | ENTRY(cpu_arm7tdmi_proc_init) |
| 32 | ENTRY(cpu_arm7tdmi_do_idle) |
| 33 | ENTRY(cpu_arm7tdmi_dcache_clean_area) |
| 34 | ENTRY(cpu_arm7tdmi_switch_mm) |
| 35 | ret lr |
| 36 | |
| 37 | /* |
| 38 | * cpu_arm7tdmi_proc_fin() |
| 39 | */ |
| 40 | ENTRY(cpu_arm7tdmi_proc_fin) |
| 41 | ret 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" |
| 49 | ENTRY(cpu_arm7tdmi_reset) |
| 50 | ret r0 |
| 51 | ENDPROC(cpu_arm7tdmi_reset) |
| 52 | .popsection |
| 53 | |
| 54 | .type __arm7tdmi_setup, #function |
| 55 | __arm7tdmi_setup: |
| 56 | ret lr |
| 57 | .size __arm7tdmi_setup, . - __arm7tdmi_setup |
| 58 | |
| 59 | __INITDATA |
| 60 | |
| 61 | @ define struct processor (see <asm/proc-fns.h> and proc-macros.S) |
| 62 | define_processor_functions arm7tdmi, dabort=v4t_late_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_arm7tdmi_name, "ARM7TDMI" |
| 69 | string cpu_triscenda7_name, "Triscend-A7x" |
| 70 | string cpu_at91_name, "Atmel-AT91M40xxx" |
| 71 | string cpu_s3c3410_name, "Samsung-S3C3410" |
| 72 | string cpu_s3c44b0x_name, "Samsung-S3C44B0x" |
| 73 | string cpu_s3c4510b_name, "Samsung-S3C4510B" |
| 74 | string cpu_s3c4530_name, "Samsung-S3C4530" |
| 75 | string cpu_netarm_name, "NETARM" |
| 76 | |
| 77 | .align |
| 78 | |
| 79 | .section ".proc.info.init", #alloc |
| 80 | |
| 81 | .macro arm7tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, \ |
| 82 | extra_hwcaps=0 |
| 83 | .type __\name\()_proc_info, #object |
| 84 | __\name\()_proc_info: |
| 85 | .long \cpu_val |
| 86 | .long \cpu_mask |
| 87 | .long 0 |
| 88 | .long 0 |
| 89 | initfn __arm7tdmi_setup, __\name\()_proc_info |
| 90 | .long cpu_arch_name |
| 91 | .long cpu_elf_name |
| 92 | .long HWCAP_SWP | HWCAP_26BIT | ( \extra_hwcaps ) |
| 93 | .long \cpu_name |
| 94 | .long arm7tdmi_processor_functions |
| 95 | .long 0 |
| 96 | .long 0 |
| 97 | .long v4_cache_fns |
| 98 | .size __\name\()_proc_info, . - __\name\()_proc_info |
| 99 | .endm |
| 100 | |
| 101 | arm7tdmi_proc_info arm7tdmi, 0x41007700, 0xfff8ff00, \ |
| 102 | cpu_arm7tdmi_name |
| 103 | arm7tdmi_proc_info triscenda7, 0x0001d2ff, 0x0001ffff, \ |
| 104 | cpu_triscenda7_name, extra_hwcaps=HWCAP_THUMB |
| 105 | arm7tdmi_proc_info at91, 0x14000040, 0xfff000e0, \ |
| 106 | cpu_at91_name, extra_hwcaps=HWCAP_THUMB |
| 107 | arm7tdmi_proc_info s3c4510b, 0x36365000, 0xfffff000, \ |
| 108 | cpu_s3c4510b_name, extra_hwcaps=HWCAP_THUMB |
| 109 | arm7tdmi_proc_info s3c4530, 0x4c000000, 0xfff000e0, \ |
| 110 | cpu_s3c4530_name, extra_hwcaps=HWCAP_THUMB |
| 111 | arm7tdmi_proc_info s3c3410, 0x34100000, 0xffff0000, \ |
| 112 | cpu_s3c3410_name, extra_hwcaps=HWCAP_THUMB |
| 113 | arm7tdmi_proc_info s3c44b0x, 0x44b00000, 0xffff0000, \ |
| 114 | cpu_s3c44b0x_name, extra_hwcaps=HWCAP_THUMB |