diff options
| author | Stephen Warren <swarren@nvidia.com> | 2016-01-26 11:10:13 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2016-01-28 21:01:23 -0700 |
| commit | 986691fb97bc245be517a9db1297cfa71dd865cf (patch) | |
| tree | 36dde58b6269ef2844de3ee05282cde825297bb9 /doc | |
| parent | 3483b75d94716191b354d046b4ed3f322500a3ee (diff) | |
distro bootcmd: enumerate PCI before network operations
The PCI bus must be enumerated before PCI devices, such as Ethernet
devices, are known to U-Boot. Enhance the distro boot commands to perform
PCI enumeration when needed.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.distro | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/README.distro b/doc/README.distro index 019903ea7d..3715c8c3ba 100644 --- a/doc/README.distro +++ b/doc/README.distro @@ -349,6 +349,14 @@ boot_net_usb_start: device is not attached to USB, and you wish to increase boot speed by avoiding unnecessary actions. +boot_net_pci_enum: + + If you want to prevent PCI enumeration by distro boot commands which execute + network operations, set the value to something innocuous, e.g. setenv + boot_net_pci_enum true. This would be useful if you know your Ethernet + device is not attached to PCI, and you wish to increase boot speed by + avoiding unnecessary actions. + Interactively booting from a specific device at the u-boot prompt ================================================================= |