diff options
| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2020-04-22 16:43:44 +0200 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-04-26 18:29:01 +0200 |
| commit | 0cf2ea1121aa14f6873ed2907a3e27b62c87fcbe (patch) | |
| tree | 9c8831235a0663dfc7231d8170713c1d1980e395 /arch/mips/mm | |
| parent | MIPS: Loongson: Add support for perf tool (diff) | |
| download | linux-0cf2ea1121aa14f6873ed2907a3e27b62c87fcbe.tar.xz linux-0cf2ea1121aa14f6873ed2907a3e27b62c87fcbe.zip | |
MIPS: Kernel: Identify Loongson-2K processors
Loongson-2K (Loongson64 Reduced) is a family of SoC shipped with
gs264e core.
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/mm')
| -rw-r--r-- | arch/mips/mm/c-r4k.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index 89b6839140d7..85eb62e40e2b 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -1303,7 +1303,8 @@ static void probe_pcache(void) c->dcache.linesz; c->dcache.waybit = 0; if ((c->processor_id & (PRID_IMP_MASK | PRID_REV_MASK)) >= - (PRID_IMP_LOONGSON_64C | PRID_REV_LOONGSON3A_R2_0)) + (PRID_IMP_LOONGSON_64C | PRID_REV_LOONGSON3A_R2_0) || + (c->processor_id & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64R) c->options |= MIPS_CPU_PREFETCH; break; @@ -1629,8 +1630,13 @@ static void __init loongson3_sc_init(void) scache_size = c->scache.sets * c->scache.ways * c->scache.linesz; - /* Loongson-3 has 4 cores, 1MB scache for each. scaches are shared */ - scache_size *= 4; + + /* Loongson-3 has 4-Scache banks, while Loongson-2K have only 2 banks */ + if ((c->processor_id & PRID_IMP_MASK) == PRID_IMP_LOONGSON_64R) + scache_size *= 2; + else + scache_size *= 4; + c->scache.waybit = 0; c->scache.waysize = scache_size / c->scache.ways; pr_info("Unified secondary cache %ldkB %s, linesize %d bytes.\n", |