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boot/at91dataflashboot: force arm mode instead of Thumb mode

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The at91dataflashboot code contains some hand-written ARM assembly
that uses ARM classic instructions, and will not build in Thumb-1
mode.

This issue has always existed in Buildroot, but it's only since we
started testing random configurations, including Thumb-1
configurations, that this issue popped up.

Fixes:

  http://autobuild.buildroot.net/results/68bf2291201ef1882d8e8d3eca2b1a5ad731e4b0/

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 07acc00add)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Bernd Kuhls 2023-08-02 22:31:46 +02:00 committed by Peter Korsgaard
parent 59d0adb63f
commit 7cf98ac971
1 changed files with 6 additions and 1 deletions
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7
boot/at91dataflashboot/at91dataflashboot.mk
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@ -11,9 +11,14 @@ AT91DATAFLASHBOOT_SITE = ftp://www.at91.com/pub/buildroot
AT91DATAFLASHBOOT_INSTALL_TARGET = NO
AT91DATAFLASHBOOT_INSTALL_IMAGES = YES
AT91DATAFLASHBOOT_CFLAGS = $(TARGET_CFLAGS) -fno-stack-protector
ifeq ($(BR2_ARM_INSTRUCTIONS_THUMB),y)
AT91DATAFLASHBOOT_CFLAGS += -marm
endif
define AT91DATAFLASHBOOT_BUILD_CMDS
make -C $(@D) CROSS_COMPILE=$(TARGET_CROSS) \
CFLAGS="$(TARGET_CFLAGS) -fno-stack-protector"
CFLAGS="$(AT91DATAFLASHBOOT_CFLAGS)"
endef
define AT91DATAFLASHBOOT_INSTALL_IMAGES_CMDS