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| author | Nico Huber <nico.h@gmx.de> | 2021-04-02 22:02:18 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-04-18 20:36:37 +0000 |
| commit | 2a1ad76f7849c8141408e8895e90527053aa3bd8 (patch) | |
| tree | 9e2d49f66d30a189f6bb00b6aeef59ec8fd4d6f7 | |
| parent | 2d82195f976f2716b44c36042d78a55c42f1ad34 (diff) | |
device/Kconfig: Adapt PCIEXP_HOTPLUG_BUSES
The default of 32 buses per hotplug bridge is rather high. Especially
for platforms that limit MMConf space to 64 buses: they run out of
numbers if there is more than a single hotplug bridge.
Lower the default to
* 8 if MMConf is limited to 64 or less buses,
* 16 if MMConf is limited to 128 or less buses.
Change-Id: I06d522dd92ceea9f4798273b26f947a5333800c3
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52069
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
| -rw-r--r-- | src/device/Kconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/device/Kconfig b/src/device/Kconfig index 1bfc34a982..63b7d6c9ee 100644 --- a/src/device/Kconfig +++ b/src/device/Kconfig @@ -626,6 +626,8 @@ if PCIEXP_HOTPLUG config PCIEXP_HOTPLUG_BUSES int "PCI Express Hotplug Buses" + default 8 if MMCONF_SUPPORT && MMCONF_BUS_NUMBER <= 64 + default 16 if MMCONF_SUPPORT && MMCONF_BUS_NUMBER <= 128 default 32 help This is the number of buses allocated for hotplug PCI express |