diff options
| author | Wilson Chou <Wilson.Chou@quantatw.com> | 2022-08-29 02:08:24 +0000 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-09-12 12:41:13 +0000 |
| commit | c8a86954f3336da19c96320b6c695ea4a25a8990 (patch) | |
| tree | 845c42ab3dea7f675524c51d7d461bc17721d7b1 /src/device/Kconfig | |
| parent | 46ffccd753f5a350265b8650a83ba51972a5a0cf (diff) | |
device: Clear lane error status
Refer to PCI Express Base rev6.0 v1.0, 4.2.7 Link Training and Status
State Rules, Lane Error Status is normal to record the error when link
training. To make sure Lane Error Status is correct in OS runtime,
add a Kconfig PCIEXP_LANE_ERR_STAT_CLEAR that clears the PCIe lane error
status register at the end of PCIe link training.
Test=On Crater Lake, lspci -vvv shows
bb:01.0 PCI bridge: Intel Corporation Device 352a (rev 03)
(prog-if 00 [Normal decode])
Capabilities: [a30 v1] Secondary PCI Express
LnkCtl3: LnkEquIntrruptEn- PerformEqu-
LaneErrStat: LaneErr at lane: 0
Signed-off-by: Wilson Chou <Wilson.Chou@quantatw.com>
Change-Id: I6344223636409d8fc25e365a6375fc81e69f41a5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67264
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Zhang <jonzhang@fb.com>
Diffstat (limited to 'src/device/Kconfig')
| -rw-r--r-- | src/device/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/device/Kconfig b/src/device/Kconfig index b9284cbcb3..c0ba3d1614 100644 --- a/src/device/Kconfig +++ b/src/device/Kconfig @@ -654,6 +654,13 @@ config PCIEXP_DEFAULT_MAX_RESIZABLE_BAR_BITS endif # PCIEXP_SUPPORT_RESIZABLE_BARS +config PCIEXP_LANE_ERR_STAT_CLEAR + prompt "Enable Clear PCIe Lane Error Status" + bool + default n + help + Clear the PCIe Lane Error Status at the end of link training. + config PCIEXP_HOTPLUG prompt "Enable PCIe Hotplug Support" bool |