/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *  linux/arch/arm/mm/proc-arm7tdmi.S: utility functions for ARM7TDMI
 *
 *  Copyright (C) 2003-2006 Hyok S. Choi <hyok.choi@samsung.com>
 */
#include <linux/linkage.h>
#include <linux/init.h>
#include <linux/cfi_types.h>
#include <linux/pgtable.h>
#include <asm/assembler.h>
#include <asm/asm-offsets.h>
#include <asm/hwcap.h>
#include <asm/pgtable-hwdef.h>
#include <asm/ptrace.h>

#include "proc-macros.S"

        .text
/*
 * cpu_arm7tdmi_proc_init()
 * cpu_arm7tdmi_do_idle()
 * cpu_arm7tdmi_dcache_clean_area()
 * cpu_arm7tdmi_switch_mm()
 *
 * These are not required.
*/
SYM_TYPED_FUNC_START(cpu_arm7tdmi_proc_init)
        ret lr
SYM_FUNC_END(cpu_arm7tdmi_proc_init)

SYM_TYPED_FUNC_START(cpu_arm7tdmi_do_idle)
        ret lr
SYM_FUNC_END(cpu_arm7tdmi_do_idle)

SYM_TYPED_FUNC_START(cpu_arm7tdmi_dcache_clean_area)
        ret lr
SYM_FUNC_END(cpu_arm7tdmi_dcache_clean_area)

SYM_TYPED_FUNC_START(cpu_arm7tdmi_switch_mm)
        ret     lr
SYM_FUNC_END(cpu_arm7tdmi_switch_mm)

/*
 * cpu_arm7tdmi_proc_fin()
*/
SYM_TYPED_FUNC_START(cpu_arm7tdmi_proc_fin)
        ret     lr
SYM_FUNC_END(cpu_arm7tdmi_proc_fin)

/*
 * Function: cpu_arm7tdmi_reset(loc)
 * Params  : loc(r0)    address to jump to
 * Purpose : Sets up everything for a reset and jump to the location for soft reset.
 */
                .pushsection    .idmap.text, "ax"
SYM_TYPED_FUNC_START(cpu_arm7tdmi_reset)
                ret     r0
SYM_FUNC_END(cpu_arm7tdmi_reset)
                .popsection

                .type   __arm7tdmi_setup, #function
__arm7tdmi_setup:
                ret     lr
                .size   __arm7tdmi_setup, . - __arm7tdmi_setup

                __INITDATA

                @ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
                define_processor_functions arm7tdmi, dabort=v4t_late_abort, pabort=legacy_pabort, nommu=1

                .section ".rodata"

                string  cpu_arch_name, "armv4t"
                string  cpu_elf_name, "v4"
                string  cpu_arm7tdmi_name, "ARM7TDMI"
                string  cpu_triscenda7_name, "Triscend-A7x"
                string  cpu_at91_name, "Atmel-AT91M40xxx"
                string  cpu_s3c3410_name, "Samsung-S3C3410"
                string  cpu_s3c44b0x_name, "Samsung-S3C44B0x"
                string  cpu_s3c4510b_name, "Samsung-S3C4510B"
                string  cpu_s3c4530_name, "Samsung-S3C4530"
                string  cpu_netarm_name, "NETARM"

                .align

                .section ".proc.info.init", "a"

.macro arm7tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req, \
        extra_hwcaps=0
                .type   __\name\()_proc_info, #object
__\name\()_proc_info:
                .long   \cpu_val
                .long   \cpu_mask
                .long   0
                .long   0
                initfn  __arm7tdmi_setup, __\name\()_proc_info
                .long   cpu_arch_name
                .long   cpu_elf_name
                .long   HWCAP_SWP | HWCAP_26BIT | ( \extra_hwcaps )
                .long   \cpu_name
                .long   arm7tdmi_processor_functions
                .long   0
                .long   0
                .long   v4_cache_fns
                .size   __\name\()_proc_info, . - __\name\()_proc_info
.endm

                arm7tdmi_proc_info arm7tdmi, 0x41007700, 0xfff8ff00, \
                        cpu_arm7tdmi_name
                arm7tdmi_proc_info triscenda7, 0x0001d2ff, 0x0001ffff, \
                        cpu_triscenda7_name, extra_hwcaps=HWCAP_THUMB
                arm7tdmi_proc_info at91, 0x14000040, 0xfff000e0, \
                        cpu_at91_name, extra_hwcaps=HWCAP_THUMB
                arm7tdmi_proc_info s3c4510b, 0x36365000, 0xfffff000, \
                        cpu_s3c4510b_name, extra_hwcaps=HWCAP_THUMB
                arm7tdmi_proc_info s3c4530, 0x4c000000, 0xfff000e0, \
                        cpu_s3c4530_name, extra_hwcaps=HWCAP_THUMB
                arm7tdmi_proc_info s3c3410, 0x34100000, 0xffff0000, \
                        cpu_s3c3410_name, extra_hwcaps=HWCAP_THUMB
                arm7tdmi_proc_info s3c44b0x, 0x44b00000, 0xffff0000, \
                        cpu_s3c44b0x_name, extra_hwcaps=HWCAP_THUMB