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kernel/linux-rt-4.4.41/arch/mips/include/asm/mach-ath79/kernel-entry-init.h 890 Bytes
5113f6f70   김현기   kernel add
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  /*
   *  Atheros AR71XX/AR724X/AR913X specific kernel entry setup
   *
   *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
   *
   *  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.
   *
   */
  #ifndef __ASM_MACH_ATH79_KERNEL_ENTRY_H
  #define __ASM_MACH_ATH79_KERNEL_ENTRY_H
  
  	/*
  	 * Some bootloaders set the 'Kseg0 coherency algorithm' to
  	 * 'Cacheable, noncoherent, write-through, no write allocate'
  	 * and this cause performance issues. Let's go and change it to
  	 * 'Cacheable, noncoherent, write-back, write allocate'
  	 */
  	.macro	kernel_entry_setup
  	mfc0	t0, CP0_CONFIG
  	li	t1, ~CONF_CM_CMASK
  	and	t0, t1
  	ori	t0, CONF_CM_CACHABLE_NONCOHERENT
  	mtc0	t0, CP0_CONFIG
  	nop
  	.endm
  
  	.macro	smp_slave_setup
  	.endm
  
  #endif /* __ASM_MACH_ATH79_KERNEL_ENTRY_H */