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authorVineet Gupta <vgupta@synopsys.com>2015-03-08 14:18:21 +0530
committerVineet Gupta <vgupta@synopsys.com>2015-04-13 15:15:17 +0530
commita44ec8bd2a55c7644d458d8e79d83bd9204e1796 (patch)
tree7dc54872be8441517012137389957efe0e0d3cc3 /arch/arc
parentde60c1a1849c57e864f02f0d921993982b1648f8 (diff)
downloadkernel-a44ec8bd2a55c7644d458d8e79d83bd9204e1796.tar.gz
ARC: Fix RTT boot printing
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc')
-rw-r--r--arch/arc/include/asm/arcregs.h1
-rw-r--r--arch/arc/kernel/setup.c5
2 files changed, 5 insertions, 1 deletions
diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h
index fe2c3cf82281..e2b1b1211b0d 100644
--- a/arch/arc/include/asm/arcregs.h
+++ b/arch/arc/include/asm/arcregs.h
@@ -30,6 +30,7 @@
#define ARC_REG_D_UNCACH_BCR 0x6A
#define ARC_REG_BPU_BCR 0xc0
#define ARC_REG_ISA_CFG_BCR 0xc1
+#define ARC_REG_RTT_BCR 0xF2
#define ARC_REG_SMART_BCR 0xFF
/* status32 Bits Positions */
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index 900f68a70088..1d167c6df8ca 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -120,7 +120,10 @@ static void read_arc_build_cfg_regs(void)
READ_BCR(ARC_REG_SMART_BCR, bcr);
cpu->extn.smart = bcr.ver ? 1 : 0;
- cpu->extn.debug = cpu->extn.ap | cpu->extn.smart;
+ READ_BCR(ARC_REG_RTT_BCR, bcr);
+ cpu->extn.rtt = bcr.ver ? 1 : 0;
+
+ cpu->extn.debug = cpu->extn.ap | cpu->extn.smart | cpu->extn.rtt;
}
static const struct cpuinfo_data arc_cpu_tbl[] = {