From a2eb65fcad4c66ee6992e18d8bea15fd0b07886e Mon Sep 17 00:00:00 2001 From: Bin Meng Date: Mon, 27 Jul 2015 19:16:08 +0800 Subject: x86: qemu: Add MP initialization Add a cpu1 node to the device tree and enable the MP initialization on QEMU targets (i440fx and q35). Signed-off-by: Bin Meng Acked-by: Simon Glass Tested-by: Simon Glass --- doc/README.x86 | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'doc') diff --git a/doc/README.x86 b/doc/README.x86 index 5d712445df..1cab42cc41 100644 --- a/doc/README.x86 +++ b/doc/README.x86 @@ -281,6 +281,11 @@ QEMU emulates a graphic card which U-Boot supports. Removing '-nographic' will show QEMU's VGA console window. Note this will disable QEMU's serial output. If you want to check both consoles, use '-serial stdio'. +Multicore is also supported by QEMU via '-smp n' where n is the number of cores +to instantiate. Currently the default U-Boot built for QEMU supports 2 cores. +In order to support more cores, you need add additional cpu nodes in the device +tree and change CONFIG_MAX_CPUS accordingly. + CPU Microcode ------------- Modern CPUs usually require a special bit stream called microcode [8] to be -- cgit v1.2.1