diff --git a/device/device.c b/device/device.c
index 2a0d251294..da86a64b95 100644
--- a/device/device.c
+++ b/device/device.c
@@ -446,10 +446,10 @@ void compute_allocate_resource(struct bus *bus, struct resource *bridge,
 	 * resource type specific.
 	 */
 	if (bridge->flags & IORESOURCE_IO) {
-		min_align = log2(DEVICE_IO_ALIGN);
+		min_align = log2c(DEVICE_IO_ALIGN);
 	}
 	if (bridge->flags & IORESOURCE_MEM) {
-		min_align = log2(DEVICE_MEM_ALIGN);
+		min_align = log2c(DEVICE_MEM_ALIGN);
 	}
 
 	/* Make certain we have read in all of the resources. */
diff --git a/include/lib.h b/include/lib.h
index 9a614820c0..31c685daaa 100644
--- a/include/lib.h
+++ b/include/lib.h
@@ -28,7 +28,13 @@
  */
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
 
-int log2(unsigned int n);
+/* you have to explicity pick logc2 (ceiling) or log2f (floor) 
+ * it is a no-op if you KNOW that your number is a power of 2. 
+ * It is important to know what you are doing otherwise. 
+ * example: log2c(72) is 7, log2f(72) is 6!
+ */
+int log2c(unsigned int n);
+int log2f(unsigned int n);
 
 void udelay(unsigned int usecs);
 void mdelay(unsigned int msecs);
diff --git a/include/spd_ddr2.h b/include/spd_ddr2.h
index a1deb36c96..4e28bb57f5 100644
--- a/include/spd_ddr2.h
+++ b/include/spd_ddr2.h
@@ -86,3 +86,6 @@
 #define SPD_TRFC	42	/* add byte 0x40 bit [6:4] , so final val42+ table[((val40>>4) & 0x7)] + (val40 & 1)*256*/
 
 #define SPD_TREF	12
+
+/* prototypes for dealing with spd */
+u8 spd_read_byte(u16 device, u8 address);