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2 Commits

Author SHA1 Message Date
Simon Glass
d116b53f87 x86: Add comments to the SIPI vector 
The Intel SIPI (start-up inter-processor interrupt) vector is the entry
point for each secondary CPU (also called an AP - applications processor).
The assembler and C code are linked, so add comments to indicate this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
 2016-03-17 10:27:23 +08:00
Simon Glass
45b5a37836 x86: Add multi-processor init 
Most modern x86 CPUs include more than one CPU core. The OS normally requires
that these 'Application Processors' (APs) be brought up by the boot loader.
Add the required support to U-Boot to init additional APs.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
 2015-04-30 16:13:38 -06:00