build(bl2): sort sections by alignment by default

This change forces LD to sort all input sections by alignment when
allocating them within an output section. This is done in some places
explicitly in the linker scripts today, but this makes sure we don't
miss any easy targets.

Change-Id: Id70be2a5399c4c75fcf2a736cab0991d20a6b863
Signed-off-by: Chris Kay <chris.kay@arm.com>

diff --git a/bl2/bl2.mk b/bl2/bl2.mk
index 778e2c3b679ab436738843447612929e960da374..41bcd127b4ac8da56257e20dbe33dbe783bd37e6 100644 (file)
--- a/bl2/bl2.mk
+++ b/bl2/bl2.mk
@@ -15,6 +15,12 @@ ifeq (${ARCH},aarch64)
 BL2_SOURCES            +=      common/aarch64/early_exceptions.S
 endif
 
+ifneq ($(findstring gcc,$(notdir $(LD))),)
+        BL2_LDFLAGS    +=      -Wl,--sort-section=alignment
+else ifneq ($(findstring ld,$(notdir $(LD))),)
+        BL2_LDFLAGS    +=      --sort-section=alignment
+endif
+
 ifeq (${ENABLE_RME},1)
 # Using RME, run BL2 at EL3
 include lib/gpt_rme/gpt_rme.mk