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tegra: override compiler flags for low level init code

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Override -march setting for tegra to -march=armv4t for files that are
necessary for low level init on tegra.

The recent change to use -march=armv7-a for armv7 caused a regression
on tegra because tegra starts boot on a arm7tdmi processor before
transferring control to the cortex-a9.  While still executing on the
arm7tdmi there are calls to getenv_ulong() and memset() that cause an
illegal instruction exception if compiled for armv7.

Signed-off-by: Allen Martin <amartin@nvidia.com>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
amartin@nvidia.com 2012-05-14 13:14:39 +00:00 committed by Albert ARIBAUD
parent 27c4a3318f
commit f3717ac584
1 changed files with 5 additions and 2 deletions
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7
arch/arm/cpu/armv7/tegra2/config.mk
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@ -24,10 +24,13 @@
# MA 02111-1307 USA
#
# Tegra has an ARMv4T CPU which runs board_init_f(), so we must build this
# file with compatible flags
# Tegra has an ARMv4T CPU which runs board_init_f(), so we must build these
# files with compatible flags
ifdef CONFIG_TEGRA2
CFLAGS_arch/arm/lib/board.o += -march=armv4t
CFLAGS_arch/arm/lib/memset.o += -march=armv4t
CFLAGS_lib/string.o += -march=armv4t
CFLAGS_common/cmd_nvedit.o += -march=armv4t
endif
USE_PRIVATE_LIBGCC = yes