kernel-entry-init.h

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/*
 *  Atheros AR71XX/AR724X/AR913X specific kernel entry setup
 *
 *  Copyright (C) 2009 Gabor Juhos <[email protected]>
 *
 *  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 */