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Diffstat (limited to 'src/device/Kconfig')
| -rw-r--r-- | src/device/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/device/Kconfig b/src/device/Kconfig index d0d72f9a7765..439118f10c02 100644 --- a/src/device/Kconfig +++ b/src/device/Kconfig @@ -519,6 +519,19 @@ config PCIEXP_PLUGIN_SUPPORT bool default y +config PCI_ALLOW_BUS_MASTER + bool "Allow PCI bus master bit to be enabled by coreboot" + default y + help + For security reasons, bus mastering should be enabled as late as + possible. In coreboot, it's usually not necessary and payloads + should only enable it for devices they use. Since not all payloads + enable bus mastering properly yet, this option gives some sort of + "backwards compatibility" and is enabled by default to keep the + traditional behaviour for now. This is currently necessary, for + instance, for libpayload based payloads as the drivers don't enable + bus mastering for PCI bridges. + endif # PCI if PCIEXP_PLUGIN_SUPPORT |