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/cfi_types.h> 10 #include <linux/pgtable.h> 11 #include <asm/assembler.h> 12 #include <asm/asm-offsets.h> 13 #include <asm/hwcap.h> 14 #include <asm/pgtable-hwdef.h> 15 #include <asm/ptrace.h> 16 17 #include "proc-macros.S" 18 19 .text 20 /* 21 * cpu_arm9tdmi_proc_init() 22 * cpu_arm9tdmi_do_idle() 23 * cpu_arm9tdmi_dcache_clean_area() 24 * cpu_arm9tdmi_switch_mm() 25 * 26 * These are not required. 27 */ 28 SYM_TYPED_FUNC_START(cpu_arm9tdmi_proc_init) 29 ret lr 30 SYM_FUNC_END(cpu_arm9tdmi_proc_init) 31 32 SYM_TYPED_FUNC_START(cpu_arm9tdmi_do_idle) 33 ret lr 34 SYM_FUNC_END(cpu_arm9tdmi_do_idle) 35 36 SYM_TYPED_FUNC_START(cpu_arm9tdmi_dcache_clean_area) 37 ret lr 38 SYM_FUNC_END(cpu_arm9tdmi_dcache_clean_area) 39 40 SYM_TYPED_FUNC_START(cpu_arm9tdmi_switch_mm) 41 ret lr 42 SYM_FUNC_END(cpu_arm9tdmi_switch_mm) 43 44 /* 45 * cpu_arm9tdmi_proc_fin() 46 */ 47 SYM_TYPED_FUNC_START(cpu_arm9tdmi_proc_fin) 48 ret lr 49 SYM_FUNC_END(cpu_arm9tdmi_proc_fin) 50 51 /* 52 * Function: cpu_arm9tdmi_reset(loc) 53 * Params : loc(r0) address to jump to 54 * Purpose : Sets up everything for a reset and jump to the location for soft reset. 55 */ 56 .pushsection .idmap.text, "ax" 57 SYM_TYPED_FUNC_START(cpu_arm9tdmi_reset) 58 ret r0 59 SYM_FUNC_END(cpu_arm9tdmi_reset) 60 .popsection 61 62 .type __arm9tdmi_setup, #function 63 __arm9tdmi_setup: 64 ret lr 65 .size __arm9tdmi_setup, . - __arm9tdmi_setup 66 67 __INITDATA 68 69 @ define struct processor (see <asm/proc-fns.h> and proc-macros.S) 70 define_processor_functions arm9tdmi, dabort=nommu_early_abort, pabort=legacy_pabort, nommu=1 71 72 .section ".rodata" 73 74 string cpu_arch_name, "armv4t" 75 string cpu_elf_name, "v4" 76 string cpu_arm9tdmi_name, "ARM9TDMI" 77 string cpu_p2001_name, "P2001" 78 79 .align 80 81 .section ".proc.info.init", "a" 82 83 .macro arm9tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req 84 .type __\name\()_proc_info, #object 85 __\name\()_proc_info: 86 .long \cpu_val 87 .long \cpu_mask 88 .long 0 89 .long 0 90 initfn __arm9tdmi_setup, __\name\()_proc_info 91 .long cpu_arch_name 92 .long cpu_elf_name 93 .long HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT 94 .long \cpu_name 95 .long arm9tdmi_processor_functions 96 .long 0 97 .long 0 98 .long v4_cache_fns 99 .size __\name\()_proc_info, . - __\name\()_proc_info 100 .endm 101 102 arm9tdmi_proc_info arm9tdmi, 0x41009900, 0xfff8ff00, cpu_arm9tdmi_name 103 arm9tdmi_proc_info p2001, 0x41029000, 0xffffffff, cpu_p2001_name
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