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authorKyösti Mälkki <kyosti.malkki@gmail.com>2016-12-01 22:08:18 +0200
committerKyösti Mälkki <kyosti.malkki@gmail.com>2016-12-07 12:59:28 +0100
commit6f66f414a0907f79abf492cd9eca839c0849c7f6 (patch)
tree3e74145128261014798af58111db31d616fd43dd /src/device/Kconfig
parent891b6c4d199418a08ba88e42d6c8945ce05205f1 (diff)
downloadcoreboot-6f66f414a0907f79abf492cd9eca839c0849c7f6.tar.xz
PCI ops: MMCONF_SUPPORT_DEFAULT is required
Doing PCI config operations via MMIO window by default is a requirement, if supported by the platform. This means chipset or CPU code must enable MMCONF operations early in bootblock already, or before platform-specific romstage entry. Platforms are allowed to have NO_MMCONF_SUPPORT only in the case it is actually not implemented in the silicon. Change-Id: Id4d9029dec2fe195f09373320de800fcdf88c15d Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/17693 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/device/Kconfig')
-rw-r--r--src/device/Kconfig23
1 files changed, 17 insertions, 6 deletions
diff --git a/src/device/Kconfig b/src/device/Kconfig
index fb0aaba2ca..622f3d5837 100644
--- a/src/device/Kconfig
+++ b/src/device/Kconfig
@@ -217,31 +217,42 @@ config PCI
bool
default n
+if PCI
+
+config NO_MMCONF_SUPPORT
+ bool
+ default !MMCONF_SUPPORT_DEFAULT
+
+config MMCONF_SUPPORT
+ bool
+ default MMCONF_SUPPORT_DEFAULT
+
+config MMCONF_SUPPORT_DEFAULT
+ bool
+ default n
+
config HYPERTRANSPORT_PLUGIN_SUPPORT
bool
- depends on PCI
default n
config PCIX_PLUGIN_SUPPORT
bool
- depends on PCI
default y
config CARDBUS_PLUGIN_SUPPORT
bool
- depends on PCI
default y
config AZALIA_PLUGIN_SUPPORT
bool
- depends on PCI
default n
config PCIEXP_PLUGIN_SUPPORT
bool
- depends on PCI
default y
+endif # PCI
+
if PCIEXP_PLUGIN_SUPPORT
config PCIEXP_COMMON_CLOCK
@@ -268,7 +279,7 @@ config PCIEXP_CLK_PM
config PCIEXP_L1_SUB_STATE
prompt "Enable PCIe ASPM L1 SubState"
bool
- depends on (MMCONF_SUPPORT_DEFAULT || PCI_IO_CFG_EXT)
+ depends on (MMCONF_SUPPORT || PCI_IO_CFG_EXT)
default n
help
Detect and enable ASPM on PCIe links.