On Wed, Jul 15, 2020 at 10:48:59PM +0530, Rayagonda Kokatanur wrote:
From: Abhishek Shah abhishek.shah@broadcom.com
Add API to save boot parameters passed from BL31
Use assembly implementation of save_boot_params instead of c function. Because generally ATF does not set up SP_EL2 on exiting. Thus, usage of a C function immediately after exiting with no stack setup done by ATF explicitly, may cause SP_EL2 to be not sane, which in turn causes a crash if this boot was not lucky to get an SP_EL2 in valid range. Replace C implementation with assembly one which does not use stack this early, and let u-boot to set up its stack later.
Signed-off-by: Abhishek Shah abhishek.shah@broadcom.com Signed-off-by: Rajesh Ravi rajesh.ravi@broadcom.com Signed-off-by: Vladimir Olovyannikov vladimir.olovyannikov@broadcom.com Signed-off-by: Rayagonda Kokatanur rayagonda.kokatanur@broadcom.com Reviewed-by: Simon Glass sjg@chromium.org
Applied to u-boot/master, thanks!