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https://github.com/brain-hackers/u-boot-brain
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05b75e4883
Our dcache invalidate function doesn't just invalidate, it also flushes. So rename the function accordingly and fix the dma_memcpy() function so it doesn't inadvertently corrupt the data destination. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
62 lines
1.0 KiB
ArmAsm
62 lines
1.0 KiB
ArmAsm
/* cache.S - low level cache handling routines
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* Copyright (C) 2003-2007 Analog Devices Inc.
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* Licensed under the GPL-2 or later.
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*/
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#include <asm/linkage.h>
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#include <config.h>
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#include <asm/blackfin.h>
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.text
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.align 2
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ENTRY(_blackfin_icache_flush_range)
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R2 = -32;
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R2 = R0 & R2;
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P0 = R2;
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P1 = R1;
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CSYNC;
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1:
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IFLUSH[P0++];
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CC = P0 < P1(iu);
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IF CC JUMP 1b(bp);
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IFLUSH[P0];
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SSYNC;
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RTS;
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ENDPROC(_blackfin_icache_flush_range)
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ENTRY(_blackfin_dcache_flush_range)
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R2 = -32;
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R2 = R0 & R2;
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P0 = R2;
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P1 = R1;
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CSYNC;
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1:
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FLUSH[P0++];
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CC = P0 < P1(iu);
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IF CC JUMP 1b(bp);
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FLUSH[P0];
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SSYNC;
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RTS;
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ENDPROC(_blackfin_dcache_flush_range)
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ENTRY(_blackfin_dcache_flush_invalidate_range)
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R2 = -32;
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R2 = R0 & R2;
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P0 = R2;
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P1 = R1;
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CSYNC;
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1:
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FLUSHINV[P0++];
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CC = P0 < P1(iu);
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IF CC JUMP 1b(bp);
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/*
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* If the data crosses a cache line, then we'll be pointing to
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* the last cache line, but won't have flushed/invalidated it yet, so do
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* one more.
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*/
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FLUSHINV[P0];
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SSYNC;
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RTS;
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ENDPROC(_blackfin_dcache_flush_invalidate_range)
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