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Fix video on PCI heuristic

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The video on PCI heuristic was broken. It was supposed to infer a
video device when the last element of the path was a PCI DEVICE PATH
node. However, the last node in the device path is an END node, so
this heuristic never fired.

This leads, among other things, to bhyve only producing output in the
serial connection once we leave the boot loader. This restores the
dual headed boot on bhyve + UEFI (as we did in 11.2), but will favor
serial in the absence of other config which may be a change from 11.2.

MFC After: 3 days
Differential Revision: https://reviews.freebsd.org/D26572
This commit is contained in:
Warner Losh 2020-09-28 06:00:39 +00:00
parent 5e8221100a
commit d53ed73590
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=366216
1 changed files with 4 additions and 2 deletions
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6
stand/efi/loader/main.c
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@ -739,6 +739,10 @@ parse_uefi_con_out(void)
ep = buf + sz;
node = (EFI_DEVICE_PATH *)buf;
while ((char *)node < ep) {
if (IsDevicePathEndType(node)) {
if (pci_pending && vid_seen == 0)
vid_seen = ++seen;
}
pci_pending = false;
if (DevicePathType(node) == ACPI_DEVICE_PATH &&
(DevicePathSubType(node) == ACPI_DP ||
@ -772,8 +776,6 @@ parse_uefi_con_out(void)
}
node = NextDevicePathNode(node);
}
if (pci_pending && vid_seen == 0)
vid_seen = ++seen;
/*
* Truth table for RB_MULTIPLE | RB_SERIAL