microblaze: Extend cpuinfo for support write-back caches
There is missing checking agains PVR but this is not important
for now. There are some missing checking too.
Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/include/asm/cpuinfo.h b/arch/microblaze/include/asm/cpuinfo.h
index aadf7a8..b4f5ca3 100644
--- a/arch/microblaze/include/asm/cpuinfo.h
+++ b/arch/microblaze/include/asm/cpuinfo.h
@@ -53,6 +53,7 @@
u32 dcache_write;
u32 dcache_line_length;
u32 dcache_size;
+ u32 dcache_wb;
unsigned long dcache_base;
unsigned long dcache_high;
diff --git a/arch/microblaze/kernel/cpu/cpuinfo-static.c b/arch/microblaze/kernel/cpu/cpuinfo-static.c
index 6558429e..6095aa6 100644
--- a/arch/microblaze/kernel/cpu/cpuinfo-static.c
+++ b/arch/microblaze/kernel/cpu/cpuinfo-static.c
@@ -96,6 +96,7 @@
ci->dcache_size = fcpu(cpu, "d-cache-size");
ci->dcache_base = fcpu(cpu, "d-cache-baseaddr");
ci->dcache_high = fcpu(cpu, "d-cache-highaddr");
+ ci->dcache_wb = fcpu(cpu, "xlnx,dcache-use-writeback");
ci->use_dopb = fcpu(cpu, "xlnx,d-opb");
ci->use_iopb = fcpu(cpu, "xlnx,i-opb");
diff --git a/arch/microblaze/kernel/cpu/mb.c b/arch/microblaze/kernel/cpu/mb.c
index 4dcfccd..0c912b2 100644
--- a/arch/microblaze/kernel/cpu/mb.c
+++ b/arch/microblaze/kernel/cpu/mb.c
@@ -103,11 +103,15 @@
else
count += seq_printf(m, "Icache:\t\tno\n");
- if (cpuinfo.use_dcache)
+ if (cpuinfo.use_dcache) {
count += seq_printf(m,
"Dcache:\t\t%ukB\n",
cpuinfo.dcache_size >> 10);
- else
+ if (cpuinfo.dcache_wb)
+ count += seq_printf(m, "\t\twrite-back\n");
+ else
+ count += seq_printf(m, "\t\twrite-through\n");
+ } else
count += seq_printf(m, "Dcache:\t\tno\n");
count += seq_printf(m,