diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index f7a8415..a263fb7 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -623,6 +623,9 @@
 		c->options &= ~(MIPS_CPU_FPU | MIPS_CPU_32FPR);
 #endif
 		break;
+	case PRID_IMP_SB1A:
+		c->cputype = CPU_SB1A;
+		break;
 	}
 }
 
diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c
index f2b0446..86fe15b 100644
--- a/arch/mips/kernel/proc.c
+++ b/arch/mips/kernel/proc.c
@@ -56,6 +56,7 @@
         [CPU_5KC]	= "MIPS 5Kc",
 	[CPU_R4310]	= "R4310",
 	[CPU_SB1]	= "SiByte SB1",
+	[CPU_SB1A]	= "SiByte SB1A",
 	[CPU_TX3912]	= "TX3912",
 	[CPU_TX3922]	= "TX3922",
 	[CPU_TX3927]	= "TX3927",
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 240537d..0f94858 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -854,6 +854,7 @@
 	case CPU_R12000:
 	case CPU_4KC:
 	case CPU_SB1:
+	case CPU_SB1A:
 	case CPU_4KSC:
 	case CPU_20KC:
 	case CPU_25KF: