| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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> |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 6 | */ |
| 7 | #include <linux/linkage.h> |
| 8 | #include <linux/init.h> |
| 9 | #include <asm/assembler.h> |
| 10 | #include <asm/asm-offsets.h> |
| 11 | #include <asm/hwcap.h> |
| 12 | #include <asm/pgtable-hwdef.h> |
| 13 | #include <asm/pgtable.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", #alloc |
| 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 |