diff options
| author | Tom Rini <[email protected]> | 2014-02-25 10:27:01 -0500 |
|---|---|---|
| committer | Albert ARIBAUD <[email protected]> | 2014-02-26 21:19:32 +0100 |
| commit | 1551df35f296f0a8df32f4f2054254f46e8be252 (patch) | |
| tree | 5c93d004be051b5b3cfae8c5cbdf297f8b07bb9b /common | |
| parent | f503cc49a570b1e28a93b75bc912aedc93ba2cd0 (diff) | |
arm: Switch to -mno-unaligned-access when supported by the compiler
When we tell the compiler to optimize for ARMv7 (and ARMv6 for that
matter) it assumes a default of SCTRL.A being cleared and unaligned
accesses being allowed and fast at the hardware level. We set this bit
and must pass along -mno-unaligned-access so that the compiler will
still breakdown accesses and not trigger a data abort.
To better help understand the requirements of the project with respect
to unaligned memory access, the
Documentation/unaligned-memory-access.txt file has been added as
doc/README.unaligned-memory-access.txt and is taken from the v3.14-rc1
tag of the kernel.
Cc: Albert ARIBAUD <[email protected]>
Cc: Mans Rullgard <[email protected]>
Signed-off-by: Tom Rini <[email protected]>
Diffstat (limited to 'common')
| -rw-r--r-- | common/Makefile | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/common/Makefile b/common/Makefile index 3b2ff9bb529..70f813e8b91 100644 --- a/common/Makefile +++ b/common/Makefile @@ -239,5 +239,3 @@ obj-y += memsize.o obj-y += stdio.o CFLAGS_env_embedded.o := -Wa,--no-warn -DENV_CRC=$(shell tools/envcrc 2>/dev/null) -CFLAGS_hush.o := $(PLATFORM_NO_UNALIGNED) -CFLAGS_fdt_support.o := $(PLATFORM_NO_UNALIGNED) |