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authorTom Rini <trini@ti.com>2014-02-25 10:27:01 -0500
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2014-02-26 21:19:32 +0100
commit1551df35f296f0a8df32f4f2054254f46e8be252 (patch)
tree5c93d004be051b5b3cfae8c5cbdf297f8b07bb9b /lib
parentf503cc49a570b1e28a93b75bc912aedc93ba2cd0 (diff)
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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 <albert.u.boot@aribaud.net> Cc: Mans Rullgard <mans@mansr.com> Signed-off-by: Tom Rini <trini@ti.com>
Diffstat (limited to 'lib')
-rw-r--r--lib/Makefile3
1 files changed, 0 insertions, 3 deletions
diff --git a/lib/Makefile b/lib/Makefile
index 8c483c9..dedb97b 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -65,6 +65,3 @@ obj-y += vsprintf.o
obj-$(CONFIG_RANDOM_MACADDR) += rand.o
obj-$(CONFIG_BOOTP_RANDOM_DELAY) += rand.o
obj-$(CONFIG_CMD_LINK_LOCAL) += rand.o
-
-# SEE README.arm-unaligned-accesses
-CFLAGS_bzlib.o := $(PLATFORM_NO_UNALIGNED)