GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

soc/intel/tigerlake: Hide PMC and IOM devices 

Windows complains on missing drivers for these ACPI devices. Hide them
from OS as it doesn't influence the hardware operation. Linux can
still probe the drivers correctly.

TEST=Boot Windows 11 and see there are no devices with missing drivers.
Boot Ubuntu 20.04 and check that drivers corresponding to ACPI HIDs are
still probed.

Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
Change-Id: I6c30c08ab730749bddef7ea67c7470c1554bd572
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62492
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This commit is contained in:
Michał Kopeć 2022-02-22 12:28:33 +01:00 committed by Felix Held
parent c3dab9c427
commit 45037f786c
2 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/soc/intel/tigerlake/acpi/tcss.asl
View File

@ -336,6 +336,8 @@ Scope (\_SB.PCI0)
Name (_CRS, ResourceTemplate () {
Memory32Fixed (ReadWrite, IOM_BASE_ADDRESS, IOM_BASE_SIZE)
})
/* Hide the device so that Windows does not complain on missing driver */
Name (_STA, 0xB)
}
/*

2
src/soc/intel/tigerlake/pmc.c
View File

@ -106,6 +106,8 @@ static void soc_pmc_fill_ssdt(const struct device *dev)
acpigen_write_name_string("_HID", PMC_HID);
acpigen_write_name_string("_DDN", "Intel(R) Tiger Lake IPC Controller");
/* Hide the device so that Windows does not complain on missing driver */
acpigen_write_STA(ACPI_STATUS_DEVICE_HIDDEN_ON);
/*
* Part of the PCH's reserved 32 MB MMIO range (0xFC800000 - 0xFE7FFFFF).