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arch: acpi: Patch the 32-bit PCI device area in the APCI table

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Patch the table with the currently used constants. This will be relevant
when we want to adjust the size of the PCI device area to accomodate the
PCI MMCONFIG region.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
2019-09-30 13:33:44 +01:00
parent 09392f0530
commit a9eb352aea
1 changed files with 8 additions and 0 deletions
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8
arch/src/x86_64/acpi.rs
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@@ -151,6 +151,14 @@ pub fn create_dsdt_table(
0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x79, 0x00,
];
// Patch Range Minimum/Range Maximum/Length for the the 64-bit device area
pci_dsdt_data[170..174].copy_from_slice(&layout::MEM_32BIT_DEVICES_START.0.to_le_bytes()[0..4]);
pci_dsdt_data[174..178].copy_from_slice(
&(layout::MEM_32BIT_DEVICES_START.0 + layout::MEM_32BIT_DEVICES_SIZE - 1).to_le_bytes()
[0..4],
);
pci_dsdt_data[182..186].copy_from_slice(&layout::MEM_32BIT_DEVICES_SIZE.to_le_bytes()[0..4]);
// Patch the Range Minimum/Range Maximum/Length for the the 64-bit device area
pci_dsdt_data[200..208].copy_from_slice(&(start_of_device_area.0).to_le_bytes());
pci_dsdt_data[208..216].copy_from_slice(&end_of_device_area.0.to_le_bytes());