From 4d8edbfefb630559220939ad5a3bdd8a75190cc3 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Fri, 8 Mar 2013 15:27:49 +0000 Subject: metag: cachepart: take into account small cache bits The CORE_CONFIG2 register has bits to indicate that the data or code cache is small, i.e. that the size described in the field should be divided by 64. Take this into account in get_icache_size() and get_dcache_size(). Signed-off-by: James Hogan --- arch/metag/kernel/cachepart.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) (limited to 'arch/metag') diff --git a/arch/metag/kernel/cachepart.c b/arch/metag/kernel/cachepart.c index 3a589dfb966b..c737edb5b2d5 100644 --- a/arch/metag/kernel/cachepart.c +++ b/arch/metag/kernel/cachepart.c @@ -24,15 +24,21 @@ unsigned int get_dcache_size(void) { unsigned int config2 = metag_in32(METAC_CORE_CONFIG2); - return 0x1000 << ((config2 & METAC_CORECFG2_DCSZ_BITS) - >> METAC_CORECFG2_DCSZ_S); + unsigned int sz = 0x1000 << ((config2 & METAC_CORECFG2_DCSZ_BITS) + >> METAC_CORECFG2_DCSZ_S); + if (config2 & METAC_CORECFG2_DCSMALL_BIT) + sz >>= 6; + return sz; } unsigned int get_icache_size(void) { unsigned int config2 = metag_in32(METAC_CORE_CONFIG2); - return 0x1000 << ((config2 & METAC_CORE_C2ICSZ_BITS) - >> METAC_CORE_C2ICSZ_S); + unsigned int sz = 0x1000 << ((config2 & METAC_CORE_C2ICSZ_BITS) + >> METAC_CORE_C2ICSZ_S); + if (config2 & METAC_CORECFG2_ICSMALL_BIT) + sz >>= 6; + return sz; } unsigned int get_global_dcache_size(void) -- cgit v1.2.3