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boot/arm-trusted-firmware: don't enable SSP by default 

SSP support requires support in ATF platform code. Not all platforms
implement plat_get_stack_protector_canary() hook. The result is build
failure:

(.text.asm.update_stack_protector_canary+0x4): undefined reference to `plat_get_stack_protector_canary'

Commit cf176128ec ("boot/arm-trusted-firmware: add SSP option")
originally introduces this issue. But then commit ccac9a5bbb
("boot/arm-trusted-firmware: don't force ENABLE_STACK_PROTECTOR") hid
the problem by effectively disabling SSP for all platforms. So only
after commit 09acc7cbc9 ("boot/arm-trusted-firmware: fix SSP
support") the issue showed up.

Make SSP an opt-in for platform that actually provide the
plat_get_stack_protector_canary() hook.

Cc: Sergey Matyukevich <geomatsi@gmail.com>
Cc: Dick Olsson <hi@senzilla.io>
Tested-by: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2022.11.x
Baruch Siach 2022-10-28 08:36:27 +03:00 committed by Thomas Petazzoni
parent ce2e91bdc5
commit f03ae60451
1 changed files with 0 additions and 1 deletions
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boot/arm-trusted-firmware/Config.in
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@ -212,7 +212,6 @@ config BR2_TARGET_ARM_TRUSTED_FIRMWARE_NEEDS_ARM32_TOOLCHAIN
config BR2_TARGET_ARM_TRUSTED_FIRMWARE_SSP
bool "Build with SSP"
default y
depends on BR2_TOOLCHAIN_HAS_SSP
depends on !BR2_SSP_NONE
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