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kernel/linux-imx6_3.14.28/arch/mips/mm/page-funcs.S 1.31 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file "COPYING" in the main directory of this archive
   * for more details.
   *
   * Micro-assembler generated clear_page/copy_page functions.
   *
   * Copyright (C) 2012  MIPS Technologies, Inc.
   * Copyright (C) 2012  Ralf Baechle <ralf@linux-mips.org>
   */
  #include <asm/asm.h>
  #include <asm/regdef.h>
  
  #ifdef CONFIG_SIBYTE_DMA_PAGEOPS
  #define cpu_clear_page_function_name	clear_page_cpu
  #define cpu_copy_page_function_name	copy_page_cpu
  #else
  #define cpu_clear_page_function_name	clear_page
  #define cpu_copy_page_function_name	copy_page
  #endif
  
  /*
   * Maximum sizes:
   *
   * R4000 128 bytes S-cache:		0x058 bytes
   * R4600 v1.7:				0x05c bytes
   * R4600 v2.0:				0x060 bytes
   * With prefetching, 16 word strides	0x120 bytes
   */
  EXPORT(__clear_page_start)
  LEAF(cpu_clear_page_function_name)
  1:	j	1b		/* Dummy, will be replaced. */
  	.space 288
  END(cpu_clear_page_function_name)
  EXPORT(__clear_page_end)
  
  /*
   * Maximum sizes:
   *
   * R4000 128 bytes S-cache:		0x11c bytes
   * R4600 v1.7:				0x080 bytes
   * R4600 v2.0:				0x07c bytes
   * With prefetching, 16 word strides	0x540 bytes
   */
  EXPORT(__copy_page_start)
  LEAF(cpu_copy_page_function_name)
  1:	j	1b		/* Dummy, will be replaced. */
  	.space 1344
  END(cpu_copy_page_function_name)
  EXPORT(__copy_page_end)