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