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kernel/linux-imx6_3.14.28/arch/arm/mm/proc-arm9tdmi.S 2.29 KB
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  /*
   *  linux/arch/arm/mm/proc-arm9tdmi.S: utility functions for ARM9TDMI
   *
   *  Copyright (C) 2003-2006 Hyok S. Choi <hyok.choi@samsung.com>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   */
  #include <linux/linkage.h>
  #include <linux/init.h>
  #include <asm/assembler.h>
  #include <asm/asm-offsets.h>
  #include <asm/hwcap.h>
  #include <asm/pgtable-hwdef.h>
  #include <asm/pgtable.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.
   */
  ENTRY(cpu_arm9tdmi_proc_init)
  ENTRY(cpu_arm9tdmi_do_idle)
  ENTRY(cpu_arm9tdmi_dcache_clean_area)
  ENTRY(cpu_arm9tdmi_switch_mm)
  		mov	pc, lr
  
  /*
   * cpu_arm9tdmi_proc_fin()
   */
  ENTRY(cpu_arm9tdmi_proc_fin)
  		mov	pc, lr
  
  /*
   * 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"
  ENTRY(cpu_arm9tdmi_reset)
  		mov	pc, r0
  ENDPROC(cpu_arm9tdmi_reset)
  		.popsection
  
  		.type	__arm9tdmi_setup, #function
  __arm9tdmi_setup:
  		mov	pc, 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", #alloc, #execinstr
  
  .macro arm9tdmi_proc_info name:req, cpu_val:req, cpu_mask:req, cpu_name:req
  		.type	__
  ame\()_proc_info, #object
  __
  ame\()_proc_info:
  		.long	\cpu_val
  		.long	\cpu_mask
  		.long	0
  		.long	0
  		b	__arm9tdmi_setup
  		.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	__
  ame\()_proc_info, . - __
  ame\()_proc_info
  .endm
  
  	arm9tdmi_proc_info arm9tdmi, 0x41009900, 0xfff8ff00, cpu_arm9tdmi_name
  	arm9tdmi_proc_info p2001, 0x41029000, 0xffffffff, cpu_p2001_name