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authorAndrew F. Davis <afd@ti.com>2020-01-02 16:19:43 -0500
committerTony Lindgren <tony@atomide.com>2020-01-13 10:06:46 -0800
commit8ab871f8bdfcca627802b6992e556fba5722a268 (patch)
treefff99e2a081bf703657856160ce4869d4a4e99bd /arch/arm/mach-omap2/Makefile
parent48840e16c299d886a1fc333375f0564c34cab127 (diff)
downloadlinux-next-8ab871f8bdfcca627802b6992e556fba5722a268.tar.gz
ARM: OMAP2+: sleep43xx: Call secure suspend/resume handlers
During suspend CPU context may be lost in both non-secure and secure CPU states. The kernel can handle saving and restoring the non-secure context but must call into the secure side to allow it to save any context it may lose. Add these calls here. Note that on systems with OP-TEE available the suspend call is issued to OP-TEE using the ARM SMCCC, but the resume call is always issued to the ROM. This is because on waking from suspend the ROM is restored as the secure monitor. It is this resume call that instructs the ROM to restore OP-TEE, all subsequent calls will be handled by OP-TEE and should use the ARM SMCCC. Signed-off-by: Andrew F. Davis <afd@ti.com> Acked-by: Dave Gerlach <d-gerlach@ti.com> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
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