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@@ -369,4 +369,14 @@ config PCIE_ECAM_BASE
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assigned to PCI devices - i.e. the memory and prefetch regions, as
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passed to pci_set_region().
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+config PCIE_ECAM_SIZE
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+ hex
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+ default 0x10000000
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+ help
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+ This is the size of memory-mapped address of PCI configuration space,
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+ which is only available through the Enhanced Configuration Access
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+ Mechanism (ECAM) with PCI Express. Each bus consumes 1 MiB memory,
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+ so a default 0x10000000 size covers all of the 256 buses which is the
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+ maximum number of PCI buses as defined by the PCI specification.
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+
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endmenu
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