Aaron Durbin f69a99dbf8 coreboot: x86: enable gc-sections ...

Garbage collected sections allow for trimming the size of the
binaries as well as allowing for not needing to config off
unused functions. To that end, on a rambi build the following
differences are observed:

$ diff -up \
	<(readelf -l coreboot-builds/google_rambi/cbfs/fallback/ramstage.elf) \
	<(readelf -l coreboot-builds/google_rambi_gc_sections/cbfs/fallback/ramstage.elf)
--- /dev/fd/63  2015-03-10 12:07:27.927985430 -0500
+++ /dev/fd/62  2015-03-10 12:07:27.927985430 -0500
@@ -6,9 +6,9 @@ There are 4 program headers, starting at
 Program Headers:
   Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg
Align
   LOAD           0x001000 0x00000000 0x00000000 0x00040 0x00040 RWE 0
-  LOAD           0x001040 0x00000040 0x00000040 0x34560 0x34560 RWE 0
-  LOAD           0x0355a0 0x000345a0 0x000345a0 0x02578 0x02578 RWE 0
-  LOAD           0x037b18 0x00036b18 0x00036b18 0x00000 0x0b560     0
+  LOAD           0x001040 0x00000040 0x00000040 0x2cbf8 0x2cbf8 RWE 0
+  LOAD           0x02dc38 0x0002cc38 0x0002cc38 0x02208 0x02208 RWE 0
+  LOAD           0x02fe40 0x0002ee40 0x0002ee40 0x00000 0x0a888     0

  Section to Segment mapping:
   Segment Sections...

$ diff -up \
	<(readelf -l coreboot-builds/google_rambi/cbfs/fallback/romstage.elf) \
	<(readelf -l coreboot-builds/google_rambi_gc_sections/cbfs/fallback/romstage.elf)
--- /dev/fd/63  2015-03-10 12:08:16.855985880 -0500
+++ /dev/fd/62  2015-03-10 12:08:16.851985880 -0500
@@ -5,8 +5,8 @@ There are 1 program headers, starting at

 Program Headers:
   Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg
Align
-  LOAD           0x000060 0xfff20000 0xfff20000 0x08b81 0x08b81 R E
   0x10
+  LOAD           0x000060 0xfff20000 0xfff20000 0x06300 0x06300 R E
0x10

  Section to Segment mapping:
   Segment Sections...
-   00     .rom .text
+   00     .rom

The following warnings needed to be applied to CFLAGS_common because for
some reason gcc was miraculously emitting the warnings with the
unrelated *-sections options:
  -Wno-unused-but-set-variable

Change-Id: I210784fdfc273ce4cb9927352cbd5a51be3c6929
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/8635
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

2015-03-17 14:35:31 +01:00

..

loaders

misc: Drop print_ implementation from non-romcc boards

2015-01-09 06:12:22 +01:00

bootmem.c

coreboot: introduce notion of bootmem for memory map at boot

2014-03-03 21:47:27 +01:00

bootmode.c

ChromeOS: Remove oprom_is_loaded

2014-05-01 15:39:26 +02:00

cbfs_core.c

cbfs: add cbfs_read()

2015-01-13 21:30:14 +01:00

cbfs_core.h

lib/cbfs: Use linker symbols over .c include in cbfs.c

2014-11-19 00:13:26 +01:00

cbfs_spi.c

Provide a common CBFS wrapper for SPI storage

2014-12-30 19:29:47 +01:00

cbfs.c

aarch64: Fix 64-bit pointer related casts

2014-12-09 18:40:09 +01:00

cbmem_common.c

coreboot: fix munged license text

2015-03-09 02:32:19 +01:00

cbmem_console.c

CBMEM: Support DYNAMIC_CBMEM with LATE_CBMEM_INIT

2015-01-27 22:50:14 +01:00

clog2.c

src/lib/clog2.c: Fix style and clarity, remove some cruft

2014-06-20 08:06:51 +02:00

compute_ip_checksum.c

lib: Fix spelling

2013-07-10 20:17:51 +02:00

coreboot_table.c

build.h: remove variable for the builduser, -hostname and -domain

2015-03-09 17:53:16 +01:00

debug.c

misc: Drop print_ implementation from non-romcc boards

2015-01-09 06:12:22 +01:00

delay.c

- Major cleanup of the bootpath

2003-07-19 04:28:22 +00:00

dynamic_cbmem.c

coreboot: fix munged license text

2015-03-09 02:32:19 +01:00

edid.c

drivers/xgi/z9s: Port Linux framebuffer initialization to coreboot

2015-02-05 17:37:05 +01:00

fallback_boot.c

lib: Add Kconfig option to enable/disable auto fallback control

2015-03-17 04:22:23 +01:00

gcc.c

lib: Trivial - drop trailing blank lines at EOF

2014-07-08 13:52:15 +02:00

gcov-glue.c

coverage: use boot state callbacks

2013-05-01 07:08:44 +02:00

gcov-io.c

Implement GCC code coverage analysis

2013-01-12 19:09:55 +01:00

gcov-io.h

lib: Fix spelling

2013-07-10 20:17:51 +02:00

gcov-iov.h

Implement GCC code coverage analysis

2013-01-12 19:09:55 +01:00

generic_dump_spd.c

misc: Drop print_ implementation from non-romcc boards

2015-01-09 06:12:22 +01:00

generic_sdram.c

misc: Drop print_ implementation from non-romcc boards

2015-01-09 06:12:22 +01:00

halt.c

Introduce halt()

2014-11-30 12:20:05 +01:00

hardwaremain.c

Add stage information to coreboot banner

2015-03-04 19:46:25 +01:00

hexdump.c

lib/hexdump: Use size_t for length parameter of hexdump32()

2014-05-05 08:59:05 +02:00

jpeg.c

Since some people disapprove of white space cleanups mixed in regular commits

2010-04-27 06:56:47 +00:00

jpeg.h

Random cosmetic fixes (trivial).

2010-02-22 16:41:49 +00:00

libgcov.c

Fix whitespace leaked into tree

2013-09-17 21:04:35 +02:00

lzma.c

Add and consistently use wrapper macro for romstage static variables

2015-03-09 22:42:28 +01:00

lzmadecode.c

RISCV: get RISCV to build again

2014-12-04 19:17:51 +01:00

lzmadecode.h

Since some people disapprove of white space cleanups mixed in regular commits

2010-04-27 06:56:47 +00:00

Makefile.inc

coreboot: x86: enable gc-sections

2015-03-17 14:35:31 +01:00

malloc.c

lib/malloc.c: Remove pre-proc guard around include

2014-11-11 12:33:01 +01:00

memchr.c

Add an implementation for the memchr library function

2012-03-09 20:00:53 +01:00

memcmp.c

- Initial checkin of the freebios2 tree

2003-04-22 19:02:15 +00:00

memcpy.c

fix compiler warnings (trivial)

2009-01-20 21:40:16 +00:00

memmove.c

tidy

2004-03-13 03:40:29 +00:00

memrange.c

coreboot memrange: Two changes for zero size or empty memrange

2015-03-04 19:55:19 +01:00

memset.c

fix compiler warnings (trivial)

2009-01-20 21:40:16 +00:00

primitive_memtest.c

Primitive memory test

2015-01-09 16:50:55 +01:00

ramstage_cache.c

RELOCATABLE_RAMSTAGE: Fix weak symbols with ramstage_cache

2014-12-28 19:56:58 +01:00

ramtest.c

misc: Drop print_ implementation from non-romcc boards

2015-01-09 06:12:22 +01:00

reg_script.c

x86: Change MMIO addr in readN(addr)/writeN(addr, val) to pointer

2015-02-15 08:50:22 +01:00

rmodule.c

CBMEM: Always use DYNAMIC_CBMEM

2015-01-27 22:54:32 +01:00

rmodule.ld

coreboot: x86: enable gc-sections

2015-03-17 14:35:31 +01:00

selfboot.c

Print segment clean up information only when required.

2014-12-31 05:26:27 +01:00

stack.c

stack check: cosmetics

2014-09-12 22:03:53 +02:00

thread.c

Possible thread stack implementation.

2014-08-07 23:55:15 +02:00

timer_queue.c

coreboot: add timer queue implementation

2013-05-01 07:19:12 +02:00

timestamp.c

timestamps: Switch from tsc_t to uint64_t

2015-01-05 22:21:49 +01:00

tlcl_internal.h

vboot2: copy tlcl from vboot_reference as a preparation for vboot2 integration

2015-01-27 01:43:57 +01:00

tlcl_structures.h

vboot2: copy tlcl from vboot_reference as a preparation for vboot2 integration

2015-01-27 01:43:57 +01:00

tlcl.c

vboot2: copy tlcl from vboot_reference as a preparation for vboot2 integration

2015-01-27 01:43:57 +01:00

tpm_error_messages.h

TPM: Fix whitespace

2015-02-06 00:25:59 +01:00

trace.c

GPLv2 notice: Unify all files to just use one space in »MA 02110-1301«

2013-03-01 10:16:08 +01:00

version.c

build.h: remove variable for the builduser, -hostname and -domain

2015-03-09 17:53:16 +01:00