Jeenu Viswambharan 2da8d8bfc0 Add build configuration for timer save/restore ... At present, non-secure timer register contents are saved and restored as part of world switch by BL3-1. This effectively means that the non-secure timer stops, and non-secure timer interrupts are prevented from asserting until BL3-1 switches back, introducing latency for non-secure services. Often, secure world might depend on alternate sources for secure interrupts (secure timer or platform timer) instead of non-secure timers, in which case this save and restore is unnecessary. This patch introduces a boolean build-time configuration NS_TIMER_SWITCH to choose whether or not to save and restore non-secure timer registers upon world switch. The default choice is made not to save and restore them. Fixes ARM-software/tf-issues#148 Change-Id: I1b9d623606acb9797c3e0b02fb5ec7c0a414f37e		2014-05-16 17:11:31 +01:00
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diagrams	Add EL3 runtime services and SPD documentation	2014-02-28 17:51:07 +00:00
change-log.md	Add v0.3 release documentation	2014-02-28 18:23:42 +00:00
firmware-design.md	FVP secure memory support documentation	2014-04-24 19:34:01 +01:00
porting-guide.md	Fixes for TZC configuration on FVP	2014-05-12 14:21:53 +01:00
rt-svc-writers-guide.md	Implement ARM Standard Service	2014-03-20 11:16:23 +00:00
user-guide.md	Add build configuration for timer save/restore	2014-05-16 17:11:31 +01:00