[U-Boot] powerpc/85xx: select -mcpu=8540 to match -Wa, e500

Message ID 20130109014318.GA31134@buserror.net
State Superseded
Delegated to: Andy Fleming
Headers show

Commit Message

Scott Wood Jan. 9, 2013, 1:43 a.m.
This allows building with toolchains that by default target e6500.

When targetting e6500, GCC generates a two-operand form of mfcr which gas
normally maps to mfocr.  However, when we tell gas to target e500 rather
than e6500, it rejects two-operand mfcr.  Tell GCC to target a
least-common-denominator e500 to match what we tell the assembler.

Signed-off-by: Scott Wood <scottwood@freescale.com>
 arch/powerpc/cpu/mpc85xx/config.mk |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


diff --git a/arch/powerpc/cpu/mpc85xx/config.mk b/arch/powerpc/cpu/mpc85xx/config.mk
index f36d823..d1765cd 100644
--- a/arch/powerpc/cpu/mpc85xx/config.mk
+++ b/arch/powerpc/cpu/mpc85xx/config.mk
@@ -23,7 +23,7 @@ 
-PLATFORM_CPPFLAGS += -ffixed-r2 -Wa,-me500 -msoft-float -mno-string
+PLATFORM_CPPFLAGS += -ffixed-r2 -mcpu=8540 -Wa,-me500 -msoft-float -mno-string
 # -mspe=yes is needed to have -mno-spe accepted by a buggy GCC;
 # see "[PATCH,rs6000] make -mno-spe work as expected" on