diff options
| author | Julius Werner <jwerner@chromium.org> | 2013-10-15 17:36:17 -0700 |
|---|---|---|
| committer | Isaac Christensen <isaac.christensen@se-eng.com> | 2014-09-22 18:41:54 +0200 |
| commit | c505837e67aa4fb89964c849d905fa8d44459152 (patch) | |
| tree | f7e18fbcb50e54509c3a2a6365cf9a3365dfde67 /toolchain.inc | |
| parent | 08539b3b986a1eb564815f72897b448e2bd69b5b (diff) | |
| download | coreboot-c505837e67aa4fb89964c849d905fa8d44459152.tar.xz | |
arm: Have the linker garbage-collect unused functions and variables
This patch activates -ffunction-sections and -fdata-sections for the
compiler and --gc-sections for the linker. This will strip out all
unused functions and static/global variables from the final binaries and
reduce the amount of data we need to read over SPI.
A quick test with ToT images shows a 2.5k (13%) / 10k (29%) / 12k (28%)
reduction on Nyan and 3k (38%) / 23k (50%) / 13k (29%) on Pit,
respectively for bootblock / romstage / ramstage.
Change-Id: I052411d4ad190d0395921ac4d4677341fb91568a
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/177111
(cherry picked from commit 5635b138778dea67a5f179e13003132be07f7e59)
Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com>
Reviewed-on: http://review.coreboot.org/6904
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'toolchain.inc')
| -rw-r--r-- | toolchain.inc | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/toolchain.inc b/toolchain.inc index 326e474bee..0e3c0d194c 100644 --- a/toolchain.inc +++ b/toolchain.inc @@ -57,10 +57,7 @@ ARCHDIR-i386 := x86 ARCHDIR-x86_32 := x86 ARCHDIR-arm := arm -CFLAGS_arm += \ - -mno-unaligned-access\ - -mthumb\ - -mthumb-interwork +CFLAGS_arm := -mno-unaligned-access -ffunction-sections -fdata-sections toolchain_to_dir = \ $(foreach arch,$(ARCH_SUPPORTED),\ |