coreboot-kgpe-d16/payloads/libpayload/arch/arm
Vadim Bendebury b7f82e9559 libpayload: arm: add code to clear bss
This adds some assembly code to clear .bss segment. It might have been
already cleared by the loader, but it is not guaranteed. This also
helps when the program is loaded by the debugger.

BUG=none
TEST=observed that .bss is now initialized when the program is
     restarted. Verified correct boundaries of the segment.

Original-Change-Id: I0aed0070da53881e4cf8c27049459040c006e765
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/201784
Original-Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Original-Reviewed-by: Trevor Bourget <tbourget@codeaurora.org>
(cherry picked from commit c89ecee5ddfc33a438d4d1926d3756a48f3c2576)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: Ic0c33d2a8ad22cd23b3ccb73c603cb14ae2aab29
Reviewed-on: http://review.coreboot.org/8060
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-01-06 16:56:23 +01:00
..
Config.in libpayload: arm: Pass the coreboot table location to the payload. 2014-12-09 18:38:48 +01:00
Makefile.inc libpayload: Provide selfboot function. 2014-12-30 19:41:40 +01:00
asmlib.h arm: Update mem* functions to newer versions 2014-09-22 18:47:42 +02:00
cache.c arm: Redesign, clarify and clean up cache related code 2014-11-10 21:34:49 +01:00
coreboot.c libpayload: arm: Pass the coreboot table location to the payload. 2014-12-09 18:38:48 +01:00
cpu.S arm: Fix minor mistake in cache maintenance assembly 2014-12-15 23:27:41 +01:00
dummy_media.c ARM: Generalize armv7 as arm. 2014-09-08 18:59:23 +02:00
eabi_compat.c libpayload: arm: Add EABI compatible utility functions. 2014-12-30 19:04:54 +01:00
exception.c libpayload: ARM: Keep track of the CPSR when exceptions happen. 2014-12-09 18:39:14 +01:00
exception_asm.S arm: Fix stored PC value when handling exceptions 2015-01-03 00:26:18 +01:00
head.S libpayload: arm: add code to clear bss 2015-01-06 16:56:23 +01:00
libpayload.ldscript ARM: Generalize armv7 as arm. 2014-09-08 18:59:23 +02:00
main.c libpayload: Make it possible to install callbacks for particular exceptions. 2014-12-09 18:39:06 +01:00
memcpy.S arm: Put assembly functions into separate sections 2014-11-13 06:49:41 +01:00
memmove.S arm: Put assembly functions into separate sections 2014-11-13 06:49:41 +01:00
memset.S arm: Put assembly functions into separate sections 2014-11-13 06:49:41 +01:00
selfboot.c libpayload: Provide selfboot function. 2014-12-30 19:41:40 +01:00
sysinfo.c ARM: Generalize armv7 as arm. 2014-09-08 18:59:23 +02:00
timer.c ARM: Generalize armv7 as arm. 2014-09-08 18:59:23 +02:00
util.S arm: Move libgcc assembly macros to arch/asm.h 2014-09-22 18:46:57 +02:00
virtual.c ARM: API to Map Physical Address to Wipe Memory above 4GB 2014-12-09 18:39:34 +01:00