ARC: Fix RTT boot printing

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

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[] = {