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 <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 */ 27ENTRY(cpu_arm9tdmi_proc_init) 28ENTRY(cpu_arm9tdmi_do_idle) 29ENTRY(cpu_arm9tdmi_dcache_clean_area) 30ENTRY(cpu_arm9tdmi_switch_mm) 31 ret lr 32 33/* 34 * cpu_arm9tdmi_proc_fin() 35 */ 36ENTRY(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" 45ENTRY(cpu_arm9tdmi_reset) 46 ret r0 47ENDPROC(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 92