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Commit 34b9c07a authored by Michal Simek's avatar Michal Simek
Browse files

microblaze: Disable stack protection from bootloader 



Microblaze without MMU can use stack protection in bootloader
and kernel should clear this setting ASAP.

Signed-off-by: default avatarMichal Simek <michal.simek@xilinx.com>
parent 17578ea1

arch/microblaze/kernel/head.S

+4 −0
Original line number Original line Diff line number Diff line
@@ -64,6 +64,10 @@ real_start: 
#endif

#endif





	mts	rmsr, r0

	mts	rmsr, r0

/* Disable stack protection from bootloader */

	mts	rslr, r0

	addi	r8, r0, 0xFFFFFFF

	mts	rshr, r8

/*

/*

 * According to Xilinx, msrclr instruction behaves like 'mfs rX,rpc'

 * According to Xilinx, msrclr instruction behaves like 'mfs rX,rpc'

 * if the msrclr instruction is not enabled. We use this to detect

 * if the msrclr instruction is not enabled. We use this to detect