arm/mm/proc-arm9tdmi.S

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  *  linux/arch/arm/mm/proc-arm9tdmi.S: utility functions for ARM9TDMI
0004  *
0005  *  Copyright (C) 2003-2006 Hyok S. Choi <hyok.choi@samsung.com>
0006  */
0007 #include <linux/linkage.h>
0008 #include <linux/init.h>
0009 #include <linux/pgtable.h>
0010 #include <asm/assembler.h>
0011 #include <asm/asm-offsets.h>
0012 #include <asm/hwcap.h>
0013 #include <asm/pgtable-hwdef.h>
0014 #include <asm/ptrace.h>
0015
0016 #include "proc-macros.S"
0017
0018     .text
0019 /*
0020  * cpu_arm9tdmi_proc_init()
0021  * cpu_arm9tdmi_do_idle()
0022  * cpu_arm9tdmi_dcache_clean_area()
0023  * cpu_arm9tdmi_switch_mm()
0024  *
0025  * These are not required.
0026  */
0027 ENTRY(cpu_arm9tdmi_proc_init)
0028 ENTRY(cpu_arm9tdmi_do_idle)
0029 ENTRY(cpu_arm9tdmi_dcache_clean_area)
0030 ENTRY(cpu_arm9tdmi_switch_mm)
0031         ret lr
0032
0033 /*
0034  * cpu_arm9tdmi_proc_fin()
0035  */
0036 ENTRY(cpu_arm9tdmi_proc_fin)
0037         ret lr
0038
0039 /*
0040  * Function: cpu_arm9tdmi_reset(loc)
0041  * Params  : loc(r0)    address to jump to
0042  * Purpose : Sets up everything for a reset and jump to the location for soft reset.
0043  */
0044         .pushsection    .idmap.text, "ax"
0045 ENTRY(cpu_arm9tdmi_reset)
0046         ret r0
0047 ENDPROC(cpu_arm9tdmi_reset)
0048         .popsection
0049
0050         .type   __arm9tdmi_setup, #function
0051 __arm9tdmi_setup:
0052         ret lr
0053         .size   __arm9tdmi_setup, . - __arm9tdmi_setup
0054
0055         __INITDATA
0056
0057         @ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
0058         define_processor_functions arm9tdmi, dabort=nommu_early_abort, pabort=legacy_pabort, nommu=1
0059
0060         .section ".rodata"
0061
0062         string  cpu_arch_name, "armv4t"
0063         string  cpu_elf_name, "v4"
0064         string  cpu_arm9tdmi_name, "ARM9TDMI"
0065         string  cpu_p2001_name, "P2001"
0066
0067         .align
0068
0069         .section ".proc.info.init", "a"
0070
0071 .macro arm9tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req
0072         .type   __\name\()_proc_info, #object
0073 __\name\()_proc_info:
0074         .long   \cpu_val
0075         .long   \cpu_mask
0076         .long   0
0077         .long   0
0078         initfn  __arm9tdmi_setup, __\name\()_proc_info
0079         .long   cpu_arch_name
0080         .long   cpu_elf_name
0081         .long   HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
0082         .long   \cpu_name
0083         .long   arm9tdmi_processor_functions
0084         .long   0
0085         .long   0
0086         .long   v4_cache_fns
0087         .size   __\name\()_proc_info, . - __\name\()_proc_info
0088 .endm
0089
0090     arm9tdmi_proc_info arm9tdmi, 0x41009900, 0xfff8ff00, cpu_arm9tdmi_name
0091     arm9tdmi_proc_info p2001, 0x41029000, 0xffffffff, cpu_p2001_name