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| author | Soby Mathew <soby.mathew@arm.com> | 2014-07-04 16:02:26 +0100 |
|---|---|---|
| committer | Soby Mathew <soby.mathew@arm.com> | 2014-07-31 10:09:58 +0100 |
| commit | fdfabec10ce9d6d56691007dce3bc2599baeb0f0 (patch) | |
| tree | 6a77ab51f2da53c76238602eb389770a3a0a86a7 /lib/stdlib | |
| parent | dd2bdee61682df0ec65dfc43371c126a86a30c30 (diff) | |
Optimize EL3 register state stored in cpu_context structure
This patch further optimizes the EL3 register state stored in
cpu_context. The 2 registers which are removed from cpu_context are:
* cntfrq_el0 is the system timer register which is writable
only in EL3 and it can be programmed during cold/warm boot. Hence
it need not be saved to cpu_context.
* cptr_el3 controls access to Trace, Floating-point, and Advanced
SIMD functionality and it is programmed every time during cold
and warm boot. The current BL3-1 implementation does not need to
modify the access controls during normal execution and hence
they are expected to remain static.
Fixes ARM-software/tf-issues#197
Change-Id: I599ceee3b73a7dcfd37069fd41b60e3d397a7b18
Diffstat (limited to 'lib/stdlib')
0 files changed, 0 insertions, 0 deletions