PPC: Use r2 instead of r29 as global data pointer
R29 was an unlucky choice as with recent toolchains (gcc-4.2.x) gcc
will refuse to use load/store multiple insns; instead, it issues a
list of simple load/store instructions upon function entry and exit,
resulting in bigger code size, which in turn makes the build for a
few boards fail.
Use r2 instead.
Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/cpu/74xx_7xx/config.mk b/cpu/74xx_7xx/config.mk
index 417d99f..324f62b 100644
--- a/cpu/74xx_7xx/config.mk
+++ b/cpu/74xx_7xx/config.mk
@@ -23,4 +23,4 @@
PLATFORM_RELFLAGS += -fPIC -ffixed-r14 -meabi -fno-strict-aliasing
-PLATFORM_CPPFLAGS += -DCONFIG_74xx_7xx -ffixed-r2 -ffixed-r29 -mstring
+PLATFORM_CPPFLAGS += -DCONFIG_74xx_7xx -ffixed-r2 -mstring