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authorFelix Held <felix-coreboot@felixheld.de>2023-06-02 15:30:50 +0200
committerArthur Heymans <arthur@aheymans.xyz>2023-06-15 08:20:50 +0000
commit12a448224f512deba57221c0757f148e626240e0 (patch)
tree2b8fb113df223469245487f0e024ebc34289d152 /src/include/adainit.h
parentd0627c7595feb580c8c03f0335644b85bbc842aa (diff)
soc/amd/*/root_complex: reserve IOMMU MMIO area
This makes sure that the resource allocator won't use this address range for anything else. In the systems I looked at, this was between the end of the above 4GB memory and the beginning of the above 4GB PCI BAR MMIO region, but better reserve it here so nothing else will get allocated there if this expectation isn't met. TEST=Reserved region is printed in the console logs: update_constraints: PCI: 00:00.0 09 base fd00000000 limit fdffffffff mem (fixed) Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Change-Id: I5a8150873cb019ca1d903ed269e18d6f9fabb871 Reviewed-on: https://review.coreboot.org/c/coreboot/+/75611 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/include/adainit.h')
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