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2015-07-14x86: bios: Synchronize stack between real and protected modeJian Luo
PCI option rom may use different SS during its execution, so it is not safe to assume esp pointed to the same location in the protected mode. Signed-off-by: Jian Luo <jian.luo4@boschrexroth.de> Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
2014-11-25x86: Add support for running option ROMs nativelySimon Glass
On x86 machines we can use an emulator to run option ROMS as with other architectures. But with some additional effort (mostly due to the 16-bit nature of option ROMs) we can run them natively. Add support for this. Signed-off-by: Simon Glass <sjg@chromium.org>