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| author | Mike Frysinger <vapier@gentoo.org> | 2008-11-04 00:04:03 -0500 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-02-02 12:24:44 -0500 |
| commit | fdce83c108846d6f0d5b1774e1cc29f2573a6ad3 (patch) | |
| tree | 139791e83afe2517baa6ac1867565c580e91219e /lib_blackfin/cache.c | |
| parent | 84c5f0dc47d17593fd81206614891bdc94f6d51c (diff) | |
| download | u-boot-imx-fdce83c108846d6f0d5b1774e1cc29f2573a6ad3.zip u-boot-imx-fdce83c108846d6f0d5b1774e1cc29f2573a6ad3.tar.gz u-boot-imx-fdce83c108846d6f0d5b1774e1cc29f2573a6ad3.tar.bz2 | |
Blackfin: rewrite cache handling functions
Take the cache flush functions from the kernel as they use hardware loops in
order to get optimal performance.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'lib_blackfin/cache.c')
| -rw-r--r-- | lib_blackfin/cache.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/lib_blackfin/cache.c b/lib_blackfin/cache.c index 870c5bf..1557864 100644 --- a/lib_blackfin/cache.c +++ b/lib_blackfin/cache.c @@ -15,15 +15,25 @@ void flush_cache(unsigned long addr, unsigned long size) { + void *start_addr, *end_addr; + int istatus, dstatus; + /* no need to flush stuff in on chip memory (L1/L2/etc...) */ if (addr >= 0xE0000000) return; - if (icache_status()) - blackfin_icache_flush_range((void *)addr, (void *)(addr + size)); + start_addr = (void *)addr; + end_addr = (void *)(addr + size); + istatus = icache_status(); + dstatus = dcache_status(); - if (dcache_status()) - blackfin_dcache_flush_range((void *)addr, (void *)(addr + size)); + if (istatus) { + if (dstatus) + blackfin_icache_dcache_flush_range(start_addr, end_addr); + else + blackfin_icache_flush_range(start_addr, end_addr); + } else if (dstatus) + blackfin_dcache_flush_range(start_addr, end_addr); } void icache_enable(void) |