diff options
Diffstat (limited to 'arch/mips/mm/c-r4k.c')
| -rw-r--r-- | arch/mips/mm/c-r4k.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index 49e572d879e1..c14259edd53f 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -1020,10 +1020,14 @@ static void probe_pcache(void) */ config1 = read_c0_config1(); - if ((lsize = ((config1 >> 19) & 7))) - c->icache.linesz = 2 << lsize; - else - c->icache.linesz = lsize; + lsize = (config1 >> 19) & 7; + + /* IL == 7 is reserved */ + if (lsize == 7) + panic("Invalid icache line size"); + + c->icache.linesz = lsize ? 2 << lsize : 0; + c->icache.sets = 32 << (((config1 >> 22) + 1) & 7); c->icache.ways = 1 + ((config1 >> 16) & 7); @@ -1040,10 +1044,14 @@ static void probe_pcache(void) */ c->dcache.flags = 0; - if ((lsize = ((config1 >> 10) & 7))) - c->dcache.linesz = 2 << lsize; - else - c->dcache.linesz= lsize; + lsize = (config1 >> 10) & 7; + + /* DL == 7 is reserved */ + if (lsize == 7) + panic("Invalid dcache line size"); + + c->dcache.linesz = lsize ? 2 << lsize : 0; + c->dcache.sets = 32 << (((config1 >> 13) + 1) & 7); c->dcache.ways = 1 + ((config1 >> 7) & 7); @@ -1105,6 +1113,8 @@ static void probe_pcache(void) case CPU_34K: case CPU_74K: case CPU_1004K: + case CPU_INTERAPTIV: + case CPU_PROAPTIV: if (current_cpu_type() == CPU_74K) alias_74k_erratum(c); if ((read_c0_config7() & (1 << 16))) { |