51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/******************************************************************************
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* Copyright (c) 2004, 2008 IBM Corporation
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* All rights reserved.
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* This program and the accompanying materials
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* are made available under the terms of the BSD License
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* which accompanies this distribution, and is available at
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* http://www.opensource.org/licenses/bsd-license.php
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*
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* Contributors:
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* IBM Corporation - initial implementation
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*****************************************************************************/
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#ifndef __CPU_H
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#define __CPU_H
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/* Used in boot_abort.S, will need something better for KVM */
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#define HSPRG0 304
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/* XXX FIXME: Can be more efficient, no dcbst nor loop needed on P7 */
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/* This macro uses r0 */
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#define FLUSH_CACHE(r, n) add n, n, r; \
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addi n, n, 127; \
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rlwinm r, r, 0,0,24; \
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rlwinm n, n, 0,0,24; \
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sub n, n, r; \
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srwi n, n, 7; \
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mtctr n; \
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0: dcbst 0, r; \
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sync; \
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icbi 0, r; \
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sync; \
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isync; \
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addi r, r, 128; \
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bdnz 0b;
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#ifndef __ASSEMBLER__
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#define STRINGIFY(x...) #x
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#define EXPAND(x) STRINGIFY(x)
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static inline void flush_cache(void* r, long n)
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{
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asm volatile(EXPAND(FLUSH_CACHE(%0, %1))
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: "+r"(r), "+r"(n)
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:: "memory", "cc", "r0", "ctr");
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}
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#endif /* __ASSEMBLER__ */
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#endif
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