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rk27xx - implement cache handling functions

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30451 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Marcin Bukat 2011-09-06 12:39:06 +00:00
parent 4e6daf0856
commit 6d959a0625
1 changed files with 20 additions and 2 deletions
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22
firmware/target/arm/rk27xx/system-rk27xx.c
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@ -169,13 +169,31 @@ void cpucache_commit_discard(void)
CACHEOP = 0x02; CACHEOP = 0x02;
/* wait for invalidate process to complete */ /* wait for invalidate process to complete */
while (CACHEOP & 0x01); while (CACHEOP & 0x03);
/* invalidate cache way 1 */ /* invalidate cache way 1 */
CACHEOP = 0x80000002; CACHEOP = 0x80000002;
/* wait for invalidate process to complete */ /* wait for invalidate process to complete */
while (CACHEOP & 0x01); while (CACHEOP & 0x03);
} }
void cpucache_invalidate(void) __attribute__((alias("cpucache_commit_discard"))); void cpucache_invalidate(void) __attribute__((alias("cpucache_commit_discard")));
void commit_discard_dcache_range (const void *base, unsigned int size)
{
int cnt = size + ((unsigned long)base & 0x1f);
unsigned long opcode = ((unsigned long)base & 0xffffffe0) | 0x01;
while (cnt > 0)
{
CACHEOP = opcode;
while (CACHEOP & 0x03);
cnt -= 32;
opcode += 32;
}
}
void clean_dcache_range(const void *base, unsigned int size) __attribute__((alias("commit_discard_dcache_range")));