diff options
| author | Raul E Rangel <rrangel@chromium.org> | 2021-01-22 15:23:02 -0700 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2021-01-28 00:29:52 +0000 |
| commit | c3d7846a336e23168dc159e09e7c6b412c7a9cb7 (patch) | |
| tree | f4cfa764b6c576eaff1caa851faf1a242da106ea /src/soc/amd | |
| parent | ac7ec27e5c1a57ab7e9f8c6eb59ad90adbc198c0 (diff) | |
soc/amd/picasso/acpi: Fix PCI0 MMIO window
The PCI0 MMIO window was defined between TOM and 4 GiB. This was
overlapping with the FCH MMIO devices. The first MMIO device after TOM
is the FCH IOAPIC.
This wasn't causing a problem for linux other than the fact that
/proc/iomem showed all the MMIO devices under the PCI root bridge.
On Windows this was causing all the MMIO devices to have conflicting
resource errors.
BUG=b:175146875
BRANCH=zork
TEST=Boot linux and verify peripherals all work. Boot windows and
verify the i2c controllers show up. The GPIO controller still has a
problem related to power.
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: Idc409f1318e6da5a693ccbb3da74aafd13f1e058
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49853
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd')
| -rw-r--r-- | src/soc/amd/picasso/acpi/sb_pci0_fch.asl | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/src/soc/amd/picasso/acpi/sb_pci0_fch.asl b/src/soc/amd/picasso/acpi/sb_pci0_fch.asl index cbb1b91782..ed321f3e32 100644 --- a/src/soc/amd/picasso/acpi/sb_pci0_fch.asl +++ b/src/soc/amd/picasso/acpi/sb_pci0_fch.asl @@ -1,5 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0-only */ +#include <arch/ioapic.h> + External(\_SB.ALIB, MethodObj) /* System Bus */ @@ -71,16 +73,9 @@ Method(_CRS, 0) { CreateDWordField(CRES, ^MMIO._BAS, MM1B) CreateDWordField(CRES, ^MMIO._LEN, MM1L) - /* - * Declare memory between TOM1 and 4GB as available - * for PCI MMIO. - * Use ShiftLeft to avoid 64bit constant (for XP). - * This will work even if the OS does 32bit arithmetic, as - * 32bit (0x00000000 - TOM1) will wrap and give the same - * result as 64bit (0x100000000 - TOM1). - */ + /* Declare memory between TOM1 and IOAPIC as available for PCI MMIO. */ MM1B = TOM1 - Local0 = 0x10000000 << 4 + Local0 = IO_APIC_ADDR /* This is the first MMIO device after TOM1. */ Local0 -= TOM1 MM1L = Local0 |