diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h
index 85e374f873ac..b23c6c81c9ad 100644
--- a/arch/arm/include/asm/cputype.h
+++ b/arch/arm/include/asm/cputype.h
@@ -228,10 +228,26 @@ static inline int cpu_is_xsc3(void)
 }
 #endif
 
-#if !defined(CONFIG_CPU_XSCALE) && !defined(CONFIG_CPU_XSC3)
-#define	cpu_is_xscale()	0
+#if !defined(CONFIG_CPU_XSCALE) && !defined(CONFIG_CPU_XSC3) && \
+    !defined(CONFIG_CPU_MOHAWK)
+#define	cpu_is_xscale_family() 0
 #else
-#define	cpu_is_xscale()	1
+static inline int cpu_is_xscale_family(void)
+{
+	unsigned int id;
+	id = read_cpuid_id() & 0xffffe000;
+
+	switch (id) {
+	case 0x69052000: /* Intel XScale 1 */
+	case 0x69054000: /* Intel XScale 2 */
+	case 0x69056000: /* Intel XScale 3 */
+	case 0x56056000: /* Marvell XScale 3 */
+	case 0x56158000: /* Marvell Mohawk */
+		return 1;
+	}
+
+	return 0;
+}
 #endif
 
 /*
diff --git a/arch/arm/kernel/xscale-cp0.c b/arch/arm/kernel/xscale-cp0.c
index bdbb8853a19b..77a2eef72115 100644
--- a/arch/arm/kernel/xscale-cp0.c
+++ b/arch/arm/kernel/xscale-cp0.c
@@ -15,6 +15,9 @@
 #include <linux/init.h>
 #include <linux/io.h>
 #include <asm/thread_notify.h>
+#include <asm/cputype.h>
+
+asm("	.arch armv5te\n");
 
 static inline void dsp_save_state(u32 *state)
 {
@@ -152,6 +155,10 @@ static int __init xscale_cp0_init(void)
 {
 	u32 cp_access;
 
+	/* do not attempt to probe iwmmxt on non-xscale family CPUs */
+	if (!cpu_is_xscale_family())
+		return 0;
+
 	cp_access = xscale_cp_access_read() & ~3;
 	xscale_cp_access_write(cp_access | 1);
 
diff --git a/arch/arm/mm/idmap.c b/arch/arm/mm/idmap.c
index e7a81cebbb2e..d65909697165 100644
--- a/arch/arm/mm/idmap.c
+++ b/arch/arm/mm/idmap.c
@@ -86,7 +86,7 @@ static void identity_mapping_add(pgd_t *pgd, const char *text_start,
 
 	prot |= PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_AF;
 
-	if (cpu_architecture() <= CPU_ARCH_ARMv5TEJ && !cpu_is_xscale())
+	if (cpu_architecture() <= CPU_ARCH_ARMv5TEJ && !cpu_is_xscale_family())
 		prot |= PMD_BIT4;
 
 	pgd += pgd_index(addr);
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 4867f5daf82c..e0e911ea32e6 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -477,7 +477,7 @@ static void __init build_mem_type_table(void)
 	 * "update-able on write" bit on ARM610).  However, Xscale and
 	 * Xscale3 require this bit to be cleared.
 	 */
-	if (cpu_is_xscale() || cpu_is_xsc3()) {
+	if (cpu_is_xscale_family()) {
 		for (i = 0; i < ARRAY_SIZE(mem_types); i++) {
 			mem_types[i].prot_sect &= ~PMD_BIT4;
 			mem_types[i].prot_l1 &= ~PMD_BIT4;