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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 <[email protected]>
Signed-off-by: Rajesh Ravi <[email protected]>
Signed-off-by: Vladimir Olovyannikov <[email protected]>
Signed-off-by: Rayagonda Kokatanur <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
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