arch/arm/mm/proc-arm9tdmi.S

root/arch/arm/mm/proc-arm9tdmi.S
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *  linux/arch/arm/mm/proc-arm9tdmi.S: utility functions for ARM9TDMI
 *
 *  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_arm9tdmi_proc_init()
 * cpu_arm9tdmi_do_idle()
 * cpu_arm9tdmi_dcache_clean_area()
 * cpu_arm9tdmi_switch_mm()
 *
 * These are not required.
 */
SYM_TYPED_FUNC_START(cpu_arm9tdmi_proc_init)
                ret     lr
SYM_FUNC_END(cpu_arm9tdmi_proc_init)

SYM_TYPED_FUNC_START(cpu_arm9tdmi_do_idle)
                ret     lr
SYM_FUNC_END(cpu_arm9tdmi_do_idle)

SYM_TYPED_FUNC_START(cpu_arm9tdmi_dcache_clean_area)
                ret     lr
SYM_FUNC_END(cpu_arm9tdmi_dcache_clean_area)

SYM_TYPED_FUNC_START(cpu_arm9tdmi_switch_mm)
                ret     lr
SYM_FUNC_END(cpu_arm9tdmi_switch_mm)

/*
 * cpu_arm9tdmi_proc_fin()
 */
SYM_TYPED_FUNC_START(cpu_arm9tdmi_proc_fin)
                ret     lr
SYM_FUNC_END(cpu_arm9tdmi_proc_fin)

/*
 * Function: cpu_arm9tdmi_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_arm9tdmi_reset)
                ret     r0
SYM_FUNC_END(cpu_arm9tdmi_reset)
                .popsection

                .type   __arm9tdmi_setup, #function
__arm9tdmi_setup:
                ret     lr
                .size   __arm9tdmi_setup, . - __arm9tdmi_setup

                __INITDATA

                @ define struct processor (see <asm/proc-fns.h> and proc-macros.S)
                define_processor_functions arm9tdmi, dabort=nommu_early_abort, pabort=legacy_pabort, nommu=1

                .section ".rodata"

                string  cpu_arch_name, "armv4t"
                string  cpu_elf_name, "v4"
                string  cpu_arm9tdmi_name, "ARM9TDMI"
                string  cpu_p2001_name, "P2001"

                .align

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

.macro arm9tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req
                .type   __\name\()_proc_info, #object
__\name\()_proc_info:
                .long   \cpu_val
                .long   \cpu_mask
                .long   0
                .long   0
                initfn  __arm9tdmi_setup, __\name\()_proc_info
                .long   cpu_arch_name
                .long   cpu_elf_name
                .long   HWCAP_SWP | HWCAP_THUMB | HWCAP_26BIT
                .long   \cpu_name
                .long   arm9tdmi_processor_functions
                .long   0
                .long   0
                .long   v4_cache_fns
                .size   __\name\()_proc_info, . - __\name\()_proc_info
.endm

        arm9tdmi_proc_info arm9tdmi, 0x41009900, 0xfff8ff00, cpu_arm9tdmi_name
        arm9tdmi_proc_info p2001, 0x41029000, 0xffffffff, cpu_p2001_name
Linux
