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| author | Bin Meng <bmeng.cn@gmail.com> | 2015-07-27 19:16:08 +0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-08-05 08:42:38 -0600 |
| commit | a2eb65fcad4c66ee6992e18d8bea15fd0b07886e (patch) | |
| tree | 12f02c4b7aafaf51930ca8e3c8cfa9b39a364265 /doc/README.x86 | |
| parent | 417576c2f1f2c5392cd69ef3ed33668cc9900e6e (diff) | |
| download | u-boot-a2eb65fcad4c66ee6992e18d8bea15fd0b07886e.tar.gz | |
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 <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'doc/README.x86')
| -rw-r--r-- | doc/README.x86 | 5 |
1 files changed, 5 insertions, 0 deletions
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 |