On 26 January 2016 at 11:10, Stephen Warren <swar...@wwwdotorg.org> wrote: > From: Stephen Warren <swar...@nvidia.com> > > With CONFIG_DM_PCI enabled, PCI buses are not enumerated at boot, as they > are without that config option enabled. No command exists to enumerate the > PCI buses. Hence, unless some board-specific code causes PCI enumeration, > PCI-based Ethernet devices are not detected, and network access is not > available. > > This patch implements "pci enum" in the CONFIG_DM_PCI case, thus giving a > mechanism whereby PCI can be enumerated. > > do_pci()'s handling of case 'e' is moved into a single location before the > dev variable is assigned, in order to skip calculation of dev. The enum > sub-command doesn't need the dev value, and skipping its calculation > avoids an irrelevant error being printed. > > Using a command to initialize PCI like this has a disadvantage relative to > enumerating PCI at boot. In particular, Ethernet devices are not probed > during PCI enumeration, but only when used. This defers setting variables > such as ethact, ethaddr, etc. until the first network-related command is > executed. Hopefully this will not cause further issues. Perhaps in the > long term, we need a "net start/enum" command too? > > Signed-off-by: Stephen Warren <swar...@nvidia.com> > --- > This series naturally needs to be applied in order in a single branch. > This series depends on all previous applied test/py patches. > > common/cmd_pci.c | 18 +++++------------- > drivers/pci/pci-uclass.c | 15 +++++++++++++++ > 2 files changed, 20 insertions(+), 13 deletions(-)
Reviewed-by: Simon Glass <s...@chromium.org> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
