MultiArchUefiSupport固件内PCIE速率设置导致XA61200主板网卡消失

[KatyushaScarlet]

• 主板：XA61200

• 固件：MultiArchUefiSupport

• 现象：在【插槽7A0 F0】配置中，将【插槽F0模式】设为【X4】时，主板板载网卡从固件中【PCIe设备信息】和lspci中消失。将其设为【X1】时，恢复正常。

• 将F0设置为X1时，【PCIe设备信息】内容如下
  

• 将F0设置为X4时，【PCIe设备信息】内容如下
  

[MarsDoge]

qdy@aosc-qdy [ Code ] $ lspci -tv
-[0000:00]-+-00.0 Loongson Technology LLC Hyper Transport Bridge Controller
+-00.1 Loongson Technology LLC Hyper Transport Bridge Controller
+-00.2 Loongson Technology LLC Device 7a20
+-00.3 Loongson Technology LLC Device 7a30
+-04.0 Loongson Technology LLC OHCI USB Controller
+-04.1 Loongson Technology LLC EHCI USB Controller
+-05.0 Loongson Technology LLC OHCI USB Controller
+-05.1 Loongson Technology LLC EHCI USB Controller
+-07.0 Loongson Technology LLC HDA (High Definition Audio) Controller
+-08.0 Loongson Technology LLC SATA 3 AHCI Controller
+-09.0-[01]--
+-0a.0-[02]----00.0 Realtek Semiconductor Co., Ltd. RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller
+-0b.0-[03]--
+-0c.0-[04]--
+-0d.0-[05]----00.0 Kingston Technology Company, Inc. OM3PDP3 NVMe SSD
+-0f.0-[06]--
+-10.0-[07]--+-00.0 Advanced Micro Devices, Inc. [AMD/ATI] Caicos [Radeon HD 6450/7450/8450 / R5 230 OEM]
| -00.1 Advanced Micro Devices, Inc. [AMD/ATI] Caicos HDMI Audio [Radeon HD 6450 / 7450/8450/8490 OEM / R5 230/235/235X OEM]
+-13.0-[08]--
+-16.0 Loongson Technology LLC SPI Controller
-19.0 Loongson Technology LLC xHCI USB Controller

7A F0控制器分4 X1或者1 X4模式：
当4 X1模式时，F0_P0 是device9/X1; F0_P1是device10/X1; F0_P2是device11/X1; F0_P3是Device12/X1;
当1 X4模式时，F0_P0 是device 9/X4;

XA61200 板卡自带的板载网口上游控制器是F0_P1，所以F0若设置成X4时，板载网口会消失; @KatyushaScarlet