diff --git a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S
index b933fe8..90b3c8a 100644
--- a/arch/arm/cpu/armv7/omap-common/lowlevel_init.S
+++ b/arch/arm/cpu/armv7/omap-common/lowlevel_init.S
@@ -60,10 +60,14 @@
 	ldr	r3, =boot_params
 	strb	r2, [r3, #BOOT_DEVICE_OFFSET]	@ spl_boot_device <- r1
 
-	/* boot mode is passed only for devices that can raw/fat mode */
-	cmp	r2, #BOOT_DEVICE_XIP
+	/*
+	 * boot mode is only valid for device that can be raw or FAT booted.
+	 * in other cases it may be fatal to look.  While platforms differ
+	 * in the values used for each MMC slot, they are contiguous.
+	 */
+	cmp	r2, #MMC_BOOT_DEVICES_START
 	blt	2f
-	cmp	r2, #BOOT_DEVICE_MMC2
+	cmp	r2, #MMC_BOOT_DEVICES_END
 	bgt	2f
 	/* Store the boot mode (raw/FAT) in omap_bootmode */
 	ldr	r2, [r0, #DEV_DESC_PTR_OFFSET]	@ get the device descriptor ptr
diff --git a/arch/arm/include/asm/arch-am33xx/spl.h b/arch/arm/include/asm/arch-am33xx/spl.h
index f60b086..14a2c7c 100644
--- a/arch/arm/include/asm/arch-am33xx/spl.h
+++ b/arch/arm/include/asm/arch-am33xx/spl.h
@@ -37,4 +37,7 @@
 #define BOOT_DEVICE_USBETH	68
 #define BOOT_DEVICE_CPGMAC	70
 #define BOOT_DEVICE_MMC2_2      0xFF
+
+#define MMC_BOOT_DEVICES_START	BOOT_DEVICE_MMC1
+#define MMC_BOOT_DEVICES_END	BOOT_DEVICE_MMC2
 #endif
diff --git a/arch/arm/include/asm/arch-omap3/spl.h b/arch/arm/include/asm/arch-omap3/spl.h
index dec4dac..84e6d7b 100644
--- a/arch/arm/include/asm/arch-omap3/spl.h
+++ b/arch/arm/include/asm/arch-omap3/spl.h
@@ -31,4 +31,7 @@
 #define BOOT_DEVICE_MMC1	6
 #define BOOT_DEVICE_XIPWAIT	7
 #define BOOT_DEVICE_MMC2_2      0xFF
+
+#define MMC_BOOT_DEVICES_START	BOOT_DEVICE_MMC2
+#define MMC_BOOT_DEVICES_END	BOOT_DEVICE_MMC1
 #endif
diff --git a/arch/arm/include/asm/arch-omap4/spl.h b/arch/arm/include/asm/arch-omap4/spl.h
index 4e094f9..f61627f 100644
--- a/arch/arm/include/asm/arch-omap4/spl.h
+++ b/arch/arm/include/asm/arch-omap4/spl.h
@@ -32,4 +32,6 @@
 #define BOOT_DEVICE_MMC2	6
 #define BOOT_DEVICE_MMC2_2	0xFF
 
+#define MMC_BOOT_DEVICES_START	BOOT_DEVICE_MMC1
+#define MMC_BOOT_DEVICES_END	BOOT_DEVICE_MMC2
 #endif
diff --git a/arch/arm/include/asm/arch-omap5/spl.h b/arch/arm/include/asm/arch-omap5/spl.h
index 323cd63..d4d353c 100644
--- a/arch/arm/include/asm/arch-omap5/spl.h
+++ b/arch/arm/include/asm/arch-omap5/spl.h
@@ -32,4 +32,6 @@
 #define BOOT_DEVICE_MMC2        6
 #define BOOT_DEVICE_MMC2_2	7
 
+#define MMC_BOOT_DEVICES_START	BOOT_DEVICE_MMC1
+#define MMC_BOOT_DEVICES_END	BOOT_DEVICE_MMC2_2
 #endif