coreboot

Thank you for taking the time to reporting this issue. Could you please try coreboot first without modifying the management engine?

Maybe there's some private programming needed in T410, either a GPIO pin to
turn on/off power rail or some special sequence needed other than generic
pcie enumeration.

coreboot@fe80.eu 于2021年6月3日周四 下午9:45写道：

Issue #311 has been reported by Johannes Roith.

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Bug #311: T410 PCIe Endpoints missing after flashing coreboot
https://ticket.coreboot.org/issues/311

• Author: Johannes Roith
• Status: New
• Priority: Normal
• Assignee:
• Category:

* Target version:¶

After flashing coreboot on my Thinkpad T410, I realized the Mini PCIe Wifi
card was no longer detected by my system. I have tried a second Intel Mini
PCIe Wifi Card, I had lying around, but it was not recognized ether.

So I reflashed the original BIOS and checked lspci for devices (attached
in PCIe_Bus/lenovo). The Wifi Card was found again. After comparing it to
my lspci outputs with coreboot (PCIe_Bus/coreboot, it seems five devices
(including the Bridge to Mini PCIe) are not detected with coreboot.

On the old coreboot documentation site, I found the result of lspci on the
page of the T410 (https://www.coreboot.org/Board:lenovo/t410) and the
Wifi Card is missing, too.

Do you have any idea, how to get the bridge to Mini PCIe working with
coreboot, so I can use the Wifi Card? As far as I have understood, coreboot
does not a full PCIe Enumeration. If so, can I force a full enumeration in
coreboot or by changing a parameter in grub? Or is there already a
workaround?

I have attached my coreboot configuration, too. I have used the ME_Cleaner
to remove some parts of the Intel ME. I have tested it with Linux Mint and
Fedora 34.

---Files--------------------------------
T410.zip (6.05 KB)
.config (24.8 KB)

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