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40 lines
1.2 KiB
40 lines
1.2 KiB
20 years ago
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/*
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* arch/shmedia/boot/compressed/cache.c -- simple cache management functions
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*
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* Code extracted from sh-ipl+g, sh-stub.c, which has the copyright:
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*
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* This is originally based on an m68k software stub written by Glenn
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* Engel at HP, but has changed quite a bit.
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*
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* Modifications for the SH by Ben Lee and Steve Chamberlain
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*
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****************************************************************************
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THIS SOFTWARE IS NOT COPYRIGHTED
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HP offers the following for use in the public domain. HP makes no
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warranty with regard to the software or it's performance and the
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user accepts the software "AS IS" with all faults.
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HP DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD
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TO THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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****************************************************************************/
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#define CACHE_ENABLE 0
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#define CACHE_DISABLE 1
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int cache_control(unsigned int command)
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{
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volatile unsigned int *p = (volatile unsigned int *) 0x80000000;
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int i;
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for (i = 0; i < (32 * 1024); i += 32) {
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(void *) *p;
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p += (32 / sizeof (int));
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}
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return 0;
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}
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