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metag: cachepart: take into account small cache bits

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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 <james.hogan@imgtec.com>
This commit is contained in:
James Hogan 2013-03-08 15:27:49 +00:00
parent 9e71296303
commit 4d8edbfefb
1 changed files with 10 additions and 4 deletions

14
arch/metag/kernel/cachepart.c
View file

@ -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)