tree 662e5f568a281eeac201be2ebe92213f210397a6
parent b28cecdfb8976a88d208879df0aff1ca69c07de5
author Miao Yan <yanmiaobest@gmail.com> 1452159124 -0800
committer Bin Meng <bmeng.cn@gmail.com> 1452658816 +0800

x86: qemu: fix cpu device in smp boot

Currently, when booting with more that one CPU enabled, U-Boot scans
'cpu' node in device tree and calculates CPU number. This does not scale
well as changing CPU number also requires modifying .dts and re-compiling
U-Boot.

This patch uses fw_cfg interface provided by QEMU to detect online CPU
number at runtime, and dynamically adds 'cpu' device to U-Boot's driver
model.

Signed-off-by: Miao Yan <yanmiaobest@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>