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authorRobin Getz <rgetz@blackfin.uclinux.org>2008-07-26 19:39:19 +0800
committerBryan Wu <cooloney@kernel.org>2008-07-26 19:39:19 +0800
commit9de3a0b6979a4839d67ca840e386ea06acaabe39 (patch)
tree9184c0ed0f74e5d0ebf585670567ccdd0bb10d3e /arch
parent0d1cdd7ab6e0e7ccaf9f3b1d2afa0ddeead23ccc (diff)
Blackfin arch: When icache is off, make sure people know it
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/blackfin/kernel/setup.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index 5a455b6bb54..c2248fe8058 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -948,7 +948,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
uint32_t revid;
u_long cclk = 0, sclk = 0;
- u_int dcache_size = 0, dsup_banks = 0;
+ u_int icache_size = BFIN_ICACHESIZE / 1024, dcache_size = 0, dsup_banks = 0;
cpu = CPU;
mmu = "none";
@@ -1017,12 +1017,15 @@ static int show_cpuinfo(struct seq_file *m, void *v)
}
/* Is it turned on? */
- if (!((bfin_read_DMEM_CONTROL()) & (ENDCPLB | DMC_ENABLE)))
+ if (bfin_read_DMEM_CONTROL() & (ENDCPLB | DMC_ENABLE) != (ENDCPLB | DMC_ENABLE))
dcache_size = 0;
+ if (bfin_read_IMEM_CONTROL() & (IMC | ENICPLB) == (IMC | ENICPLB))
+ icache_size = 0;
+
seq_printf(m, "cache size\t: %d KB(L1 icache) "
"%d KB(L1 dcache-%s) %d KB(L2 cache)\n",
- BFIN_ICACHESIZE / 1024, dcache_size,
+ icache_size, dcache_size,
#if defined CONFIG_BFIN_WB
"wb"
#elif defined CONFIG_BFIN_WT
@@ -1032,8 +1035,12 @@ static int show_cpuinfo(struct seq_file *m, void *v)
seq_printf(m, "%s\n", cache);
- seq_printf(m, "icache setup\t: %d Sub-banks/%d Ways, %d Lines/Way\n",
- BFIN_ISUBBANKS, BFIN_IWAYS, BFIN_ILINES);
+ if (icache_size)
+ seq_printf(m, "icache setup\t: %d Sub-banks/%d Ways, %d Lines/Way\n",
+ BFIN_ISUBBANKS, BFIN_IWAYS, BFIN_ILINES);
+ else
+ seq_printf(m, "icache setup\t: off\n");
+
seq_printf(m,
"dcache setup\t: %d Super-banks/%d Sub-banks/%d Ways, %d Lines/Way\n",
dsup_banks, BFIN_DSUBBANKS, BFIN_DWAYS,