S5PC100: Memory SubSystem Header file, register description(SROMC).

[karo-tx-uboot.git] / README

diff --git a/README b/README
index 7affe10fb2a781686b64b537c62e66ab69e50e77..263bb05076b7025d0ae00a1450d46a4f028301a4 100644 (file)
--- a/README
+++ b/README
@@ -3922,7 +3922,9 @@ For PowerPC, the following registers have specific use:
        R30:    GOT pointer
        R31:    frame pointer
 
-       (U-Boot also uses R14 as internal GOT pointer.)
+       (U-Boot also uses R12 as internal GOT pointer. r12
+       is a volatile register so r12 needs to be reset when
+       going back and forth between asm and C)
 
     ==> U-Boot will use R2 to hold a pointer to the global data