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Annotation of qemu/roms/SLOF/include/ppcp7/cpu.h, revision 1.1

1.1     ! root        1: /******************************************************************************
        !             2:  * Copyright (c) 2004, 2008 IBM Corporation
        !             3:  * All rights reserved.
        !             4:  * This program and the accompanying materials
        !             5:  * are made available under the terms of the BSD License
        !             6:  * which accompanies this distribution, and is available at
        !             7:  * http://www.opensource.org/licenses/bsd-license.php
        !             8:  *
        !             9:  * Contributors:
        !            10:  *     IBM Corporation - initial implementation
        !            11:  *****************************************************************************/
        !            12: 
        !            13: #ifndef __CPU_H
        !            14: #define __CPU_H
        !            15: 
        !            16: /* Used in boot_abort.S, will need something better for KVM */
        !            17: #define HSPRG0  304
        !            18: 
        !            19: /* XXX FIXME: Can be more efficient, no dcbst nor loop needed on P7 */
        !            20: /* This macro uses r0 */
        !            21: #define FLUSH_CACHE(r, n)      add     n, n, r; \
        !            22:                                addi    n, n, 127; \
        !            23:                                rlwinm  r, r, 0,0,24; \
        !            24:                                rlwinm  n, n, 0,0,24; \
        !            25:                                sub     n, n, r; \
        !            26:                                srwi    n, n, 7; \
        !            27:                                mtctr   n; \
        !            28:                        0:      dcbst   0, r; \
        !            29:                                sync; \
        !            30:                                icbi    0, r; \
        !            31:                                sync; \
        !            32:                                isync; \
        !            33:                                addi    r, r, 128; \
        !            34:                                bdnz    0b;
        !            35: 
        !            36: #ifndef __ASSEMBLER__
        !            37: #define STRINGIFY(x...) #x
        !            38: #define EXPAND(x) STRINGIFY(x)
        !            39: 
        !            40: static inline void flush_cache(void* r, long n)
        !            41: {
        !            42:        asm volatile(EXPAND(FLUSH_CACHE(%0, %1))
        !            43:                     : "+r"(r), "+r"(n)
        !            44:                     :: "memory", "cc", "r0", "ctr");
        !            45: }
        !            46: 
        !            47: 
        !            48: #endif /* __ASSEMBLER__ */
        !            49: 
        !            50: #endif

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