[coreboot] [Broadwell] Why does refcode disable EHCI

[Zheng Bao]

On my board with broadwell, the EHCI controller is disable after refcode runs.
RCBA(FD) is 1. After refcode, RCBA(FD) is 0x8001.

So I doubt the PEI data is not filled correctly.
I change all ports like this.
    pei_data_usb2_port(pei_data, 0, 0x0080, 1, USB_OC_PIN_SKIP, //1,
               USB_PORT_BACK_PANEL);
But  it still does not work.

The refcode is extracted from SAMUS board shell ball.

Anybody has an idea? Thanks.

Zheng
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