root/sys/arch/shark/stand/ofwboot/srt0.S
/*      $NetBSD: srt0.S,v 1.1 2002/02/10 01:58:20 thorpej Exp $ */

/*
 * Copyright (c) 2001 Wasabi Systems, Inc.
 * All rights reserved.
 *
 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed for the NetBSD Project by
 *      Wasabi Systems, Inc.
 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
 *    or promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <machine/asm.h>

ASENTRY_NP(_start)
        b       _C_LABEL(startup)

ENTRY(cpufunc_id)
        mrc     p15, 0, r0, c0, c0, 0
        mov     pc, lr

        .data

        .global _C_LABEL(sa110_cache_clean_addr)
_C_LABEL(sa110_cache_clean_addr):
        .word   0x00000000

        .global _C_LABEL(sa110_cache_clean_size)
_C_LABEL(sa110_cache_clean_size):
        .word   0x00008000

        .text
Lsa110_cache_clean_addr:
        .word   _C_LABEL(sa110_cache_clean_addr)
Lsa110_cache_clean_size:
        .word   _C_LABEL(sa110_cache_clean_size)

ENTRY(sa110_cache_syncI)
        ldr     r2, Lsa110_cache_clean_addr
        ldmia   r2, {r0, r1}

1:      ldr     r2, [r0], #32                   /* clean D$ */
        subs    r1, r1, #32
        bne     1b

        mcr     p15, 0, r0, c7, c10, 4          /* drain write buffer */
        mcr     p15, 0, r0, c7, c5, 0           /* flush I$ */

        mov     pc, lr