From 5d9b23016852af99d285521f71a23ddea99ae7ee Mon Sep 17 00:00:00 2001 From: Marcin Bukat Date: Tue, 19 Jul 2011 06:49:03 +0000 Subject: rk27xx - implement cache_commit_discard(). Cache is still not enabled in crt0.S git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30167 a1c6a512-1295-4272-9138-f99709370657 --- firmware/target/arm/rk27xx/system-rk27xx.c | 16 ++++++++++++++++ firmware/target/arm/rk27xx/system-target.h | 4 ++++ 2 files changed, 20 insertions(+) (limited to 'firmware/target/arm') diff --git a/firmware/target/arm/rk27xx/system-rk27xx.c b/firmware/target/arm/rk27xx/system-rk27xx.c index 724273b61a..1459770b94 100644 --- a/firmware/target/arm/rk27xx/system-rk27xx.c +++ b/firmware/target/arm/rk27xx/system-rk27xx.c @@ -163,3 +163,19 @@ void udelay(unsigned usecs) ); } +void cpucache_commit_discard(void) +{ + /* invalidate cache way 0 */ + CACHEOP = 0x02; + + /* wait for invalidate process to complete */ + while (CACHEOP & 0x01); + + /* invalidate cache way 1 */ + CACHEOP = 0x80000002; + + /* wait for invalidate process to complete */ + while (CACHEOP & 0x01); +} + +void cpucache_invalidate(void) __attribute__((alias("cpucache_commit_discard"))); diff --git a/firmware/target/arm/rk27xx/system-target.h b/firmware/target/arm/rk27xx/system-target.h index fb904091b1..7fcf470ced 100644 --- a/firmware/target/arm/rk27xx/system-target.h +++ b/firmware/target/arm/rk27xx/system-target.h @@ -38,6 +38,10 @@ static inline void core_sleep(void) SCU_CPUPD = 0xdeedbabe; } +#define HAVE_CPUCACHE_COMMIT_DISCARD +/* deprecated alias */ +#define HAVE_CPUCACHE_INVALIDATE + #define CPUFREQ_NORMAL 200000000 #define CPUFREQ_MAX 200000000 -- cgit v1.2.3