arm: Enable -ffunction-sections / -fdata-sections / --gc-sections

While other architectures have enabled these gcc / ld options for some
time on U-Boot itself, ARM has only been doing this on SPL.  Enable this
on full U-Boot as well now.

Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
Signed-off-by: Tom Rini <trini@ti.com>

diff --git a/arch/arm/config.mk b/arch/arm/config.mk
index 24b9d7c..c43ebdd 100644 (file)
--- a/arch/arm/config.mk
+++ b/arch/arm/config.mk
@@ -31,6 +31,9 @@ CONFIG_STANDALONE_LOAD_ADDR = 0xc100000
 endif
 endif
 
+LDFLAGS_FINAL += --gc-sections
+PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections
+
 PLATFORM_CPPFLAGS += -DCONFIG_ARM -D__ARM__
 
 # Choose between ARM/Thumb instruction sets