diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2023-06-08 15:22:27 +0200 |
|---|---|---|
| committer | Lean Sheng Tan <sheng.tan@9elements.com> | 2023-07-20 10:38:42 +0000 |
| commit | a9a92ac961f8f46b7cdca2176428d5e363f44912 (patch) | |
| tree | 88e0ee1c1fae6b186cda16b4ee476a72f98b90b9 /src/northbridge/intel | |
| parent | d31cbc74d1317aa5beb8619d93b9337d2c1370de (diff) | |
acpi: Move ECAM resource below PNP0C02 device in a common place
From the Linux documentation (Documentation/PCI/acpi-info.rst):
[6] PCI Firmware 3.2, sec 4.1.2:
If the operating system does not natively comprehend reserving the
MMCFG region, the MMCFG region must be reserved by firmware. The
address range reported in the MCFG table or by _CBA method (see Section
4.1.3) must be reserved by declaring a motherboard resource. For most
systems, the motherboard resource would appear at the root of the ACPI
namespace (under \_SB) in a node with a _HID of EISAID (PNP0C02), and
the resources in this case should not be claimed in the root PCI bus’s
_CRS. The resources can optionally be returned in Int15 E820 or
EFIGetMemoryMap as reserved memory but must always be reported through
ACPI as a motherboard resource.
So in order for the OS to use ECAM MMCONF over legacy PCI IO
configuration, a PNP0C02 HID device needs to reserve this region.
As no AMD platform has this defined in DSDT this fixes Linux using
legacy PCI IO configuration over MMCONF. Tianocore messes with e820
table in such a way that it prevents Linux from using PCIe ECAM. This
change fixes that problem.
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I852e393726a1b086cf582f4d2d707e7cde05cbf4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75729
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Sean Rhodes <sean@starlabs.systems>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/northbridge/intel')
| -rw-r--r-- | src/northbridge/intel/gm45/acpi/gm45.asl | 1 | ||||
| -rw-r--r-- | src/northbridge/intel/haswell/acpi/hostbridge.asl | 1 | ||||
| -rw-r--r-- | src/northbridge/intel/i945/acpi/i945.asl | 2 | ||||
| -rw-r--r-- | src/northbridge/intel/ironlake/acpi/ironlake.asl | 1 | ||||
| -rw-r--r-- | src/northbridge/intel/pineview/acpi/pineview.asl | 1 | ||||
| -rw-r--r-- | src/northbridge/intel/sandybridge/acpi/sandybridge.asl | 7 | ||||
| -rw-r--r-- | src/northbridge/intel/x4x/acpi/x4x.asl | 1 |
7 files changed, 0 insertions, 14 deletions
diff --git a/src/northbridge/intel/gm45/acpi/gm45.asl b/src/northbridge/intel/gm45/acpi/gm45.asl index c4636beb3e..4e86092092 100644 --- a/src/northbridge/intel/gm45/acpi/gm45.asl +++ b/src/northbridge/intel/gm45/acpi/gm45.asl @@ -16,7 +16,6 @@ Device (PDRC) Memory32Fixed(ReadWrite, CONFIG_FIXED_MCHBAR_MMIO_BASE, 0x00004000) Memory32Fixed(ReadWrite, CONFIG_FIXED_DMIBAR_MMIO_BASE, 0x00001000) Memory32Fixed(ReadWrite, CONFIG_FIXED_EPBAR_MMIO_BASE, 0x00001000) - Memory32Fixed(ReadWrite, CONFIG_ECAM_MMCONF_BASE_ADDRESS, CONFIG_ECAM_MMCONF_LENGTH) Memory32Fixed(ReadWrite, 0xfed20000, 0x00020000) // Misc ICH Memory32Fixed(ReadWrite, 0xfed40000, 0x00005000) // Misc ICH Memory32Fixed(ReadWrite, 0xfed45000, 0x0004b000) // Misc ICH diff --git a/src/northbridge/intel/haswell/acpi/hostbridge.asl b/src/northbridge/intel/haswell/acpi/hostbridge.asl index 513e960a09..3ecc5b3b36 100644 --- a/src/northbridge/intel/haswell/acpi/hostbridge.asl +++ b/src/northbridge/intel/haswell/acpi/hostbridge.asl @@ -178,7 +178,6 @@ Device (PDRC) Memory32Fixed (ReadWrite, CONFIG_FIXED_MCHBAR_MMIO_BASE, MCH_BASE_SIZE) Memory32Fixed (ReadWrite, CONFIG_FIXED_DMIBAR_MMIO_BASE, DMI_BASE_SIZE) Memory32Fixed (ReadWrite, CONFIG_FIXED_EPBAR_MMIO_BASE, EP_BASE_SIZE) - Memory32Fixed (ReadWrite, CONFIG_ECAM_MMCONF_BASE_ADDRESS, CONFIG_ECAM_MMCONF_LENGTH) Memory32Fixed (ReadWrite, 0xfed20000, 0x00020000) // TXT Memory32Fixed (ReadWrite, 0xfed40000, 0x00005000) // TPM Memory32Fixed (ReadWrite, 0xfed45000, 0x0004b000) // Misc ICH diff --git a/src/northbridge/intel/i945/acpi/i945.asl b/src/northbridge/intel/i945/acpi/i945.asl index f935b716f6..7573e98b95 100644 --- a/src/northbridge/intel/i945/acpi/i945.asl +++ b/src/northbridge/intel/i945/acpi/i945.asl @@ -31,7 +31,6 @@ Device (PDRC) // Memory32Fixed(ReadWrite, 0x00000000, 0x00004000, MCHB) // MCHBAR // Memory32Fixed(ReadWrite, 0x00000000, 0x00001000, DMIB) // DMIBAR // Memory32Fixed(ReadWrite, 0x00000000, 0x00001000, EGPB) // EPBAR - // Memory32Fixed(ReadWrite, 0x00000000, 0x00000000, PCIE) // PCIE BAR // Memory32Fixed(ReadWrite, 0xfed20000, 0x00070000, ICHB) // Misc ICH //}) @@ -40,7 +39,6 @@ Device (PDRC) Memory32Fixed(ReadWrite, CONFIG_FIXED_MCHBAR_MMIO_BASE, 0x00004000) Memory32Fixed(ReadWrite, CONFIG_FIXED_DMIBAR_MMIO_BASE, 0x00001000) Memory32Fixed(ReadWrite, CONFIG_FIXED_EPBAR_MMIO_BASE, 0x00001000) - Memory32Fixed(ReadWrite, CONFIG_ECAM_MMCONF_BASE_ADDRESS, CONFIG_ECAM_MMCONF_LENGTH) Memory32Fixed(ReadWrite, 0xfed20000, 0x00020000) // Misc ICH Memory32Fixed(ReadWrite, 0xfed40000, 0x00005000) // Misc ICH Memory32Fixed(ReadWrite, 0xfed45000, 0x0004b000) // Misc ICH diff --git a/src/northbridge/intel/ironlake/acpi/ironlake.asl b/src/northbridge/intel/ironlake/acpi/ironlake.asl index b4bd8e9f52..f64ded4415 100644 --- a/src/northbridge/intel/ironlake/acpi/ironlake.asl +++ b/src/northbridge/intel/ironlake/acpi/ironlake.asl @@ -14,7 +14,6 @@ Device (PDRC) Memory32Fixed(ReadWrite, CONFIG_FIXED_MCHBAR_MMIO_BASE, 0x00008000) Memory32Fixed(ReadWrite, CONFIG_FIXED_DMIBAR_MMIO_BASE, 0x00001000) Memory32Fixed(ReadWrite, CONFIG_FIXED_EPBAR_MMIO_BASE, 0x00001000) - Memory32Fixed(ReadWrite, CONFIG_ECAM_MMCONF_BASE_ADDRESS, CONFIG_ECAM_MMCONF_LENGTH) Memory32Fixed(ReadWrite, 0xfed20000, 0x00020000) // Misc ICH Memory32Fixed(ReadWrite, 0xfed40000, 0x00005000) // Misc ICH Memory32Fixed(ReadWrite, 0xfed45000, 0x0004b000) // Misc ICH diff --git a/src/northbridge/intel/pineview/acpi/pineview.asl b/src/northbridge/intel/pineview/acpi/pineview.asl index 4901c2195a..ab7bbcd7f7 100644 --- a/src/northbridge/intel/pineview/acpi/pineview.asl +++ b/src/northbridge/intel/pineview/acpi/pineview.asl @@ -15,7 +15,6 @@ Device (PDRC) Memory32Fixed(ReadWrite, CONFIG_FIXED_MCHBAR_MMIO_BASE, 0x00004000) Memory32Fixed(ReadWrite, CONFIG_FIXED_DMIBAR_MMIO_BASE, 0x00001000) Memory32Fixed(ReadWrite, CONFIG_FIXED_EPBAR_MMIO_BASE, 0x00001000) - Memory32Fixed(ReadWrite, CONFIG_ECAM_MMCONF_BASE_ADDRESS, CONFIG_ECAM_MMCONF_LENGTH) Memory32Fixed(ReadWrite, 0xfed20000, 0x00020000) /* Misc ICH */ Memory32Fixed(ReadWrite, 0xfed40000, 0x00005000) /* Misc ICH */ Memory32Fixed(ReadWrite, 0xfed45000, 0x0004b000) /* Misc ICH */ diff --git a/src/northbridge/intel/sandybridge/acpi/sandybridge.asl b/src/northbridge/intel/sandybridge/acpi/sandybridge.asl index cf1d61ce9f..f269bf408c 100644 --- a/src/northbridge/intel/sandybridge/acpi/sandybridge.asl +++ b/src/northbridge/intel/sandybridge/acpi/sandybridge.asl @@ -15,7 +15,6 @@ Device (PDRC) Memory32Fixed(ReadWrite, 0, 0x00008000, MCHB) Memory32Fixed(ReadWrite, 0, 0x00001000, DMIB) Memory32Fixed(ReadWrite, 0, 0x00001000, EGPB) - Memory32Fixed(ReadWrite, 0, 0x04000000, PCIX) Memory32Fixed(ReadWrite, 0xfed20000, 0x00020000) // Misc ICH Memory32Fixed(ReadWrite, 0xfed40000, 0x00005000) // TPM TIS Memory32Fixed(ReadWrite, 0xfed45000, 0x0004b000) // Misc ICH @@ -37,12 +36,6 @@ Device (PDRC) CreateDwordField (PDRS, ^EGPB._BAS, EBR0) EBR0 = \_SB.PCI0.MCHC.EPBR << 12 - CreateDwordField (PDRS, ^PCIX._BAS, XBR0) - XBR0 = \_SB.PCI0.MCHC.PXBR << 26 - - CreateDwordField (PDRS, ^PCIX._LEN, XSZ0) - XSZ0 = 0x10000000 >> \_SB.PCI0.MCHC.PXSZ - Return(PDRS) } } diff --git a/src/northbridge/intel/x4x/acpi/x4x.asl b/src/northbridge/intel/x4x/acpi/x4x.asl index 462cdf9661..5425867cd7 100644 --- a/src/northbridge/intel/x4x/acpi/x4x.asl +++ b/src/northbridge/intel/x4x/acpi/x4x.asl @@ -13,7 +13,6 @@ Device (PDRC) Memory32Fixed(ReadWrite, CONFIG_FIXED_MCHBAR_MMIO_BASE, 0x00004000) Memory32Fixed(ReadWrite, CONFIG_FIXED_DMIBAR_MMIO_BASE, 0x00001000) Memory32Fixed(ReadWrite, CONFIG_FIXED_EPBAR_MMIO_BASE, 0x00001000) - Memory32Fixed(ReadWrite, CONFIG_ECAM_MMCONF_BASE_ADDRESS, CONFIG_ECAM_MMCONF_LENGTH) Memory32Fixed(ReadWrite, 0xfed20000, 0x00020000) // Misc ICH Memory32Fixed(ReadWrite, 0xfed40000, 0x00005000) // Misc ICH Memory32Fixed(ReadWrite, 0xfed45000, 0x0004b000) // Misc ICH |