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authorJeenu Viswambharan <jeenu.viswambharan@arm.com>2014-02-06 10:36:15 +0000
committerDan Handley <dan.handley@arm.com>2014-02-17 18:51:44 +0000
commitcaa84939a4d8b1189dea8619ccc57bdb3026b125 (patch)
treea7eb5e977cc9971c051ef469877fc3d00cba24ad /plat/common
parent07f4e078b6871e5c74f6cb38f2726a2cfcb2b746 (diff)
downloadarm-trusted-firmware-caa84939a4d8b1189dea8619ccc57bdb3026b125.tar.gz
Add support for handling runtime service requests
This patch uses the reworked exception handling support to handle runtime service requests through SMCs following the SMC calling convention. This is a giant commit since all the changes are inter-related. It does the following: 1. Replace the old exception handling mechanism with the new one 2. Enforce that SP_EL0 is used C runtime stacks. 3. Ensures that the cold and warm boot paths use the 'cpu_context' structure to program an ERET into the next lower EL. 4. Ensures that SP_EL3 always points to the next 'cpu_context' structure prior to an ERET into the next lower EL 5. Introduces a PSCI SMC handler which completes the use of PSCI as a runtime service Change-Id: I661797f834c0803d2c674d20f504df1b04c2b852 Co-authored-by: Achin Gupta <achin.gupta@arm.com>
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