On Thu, 2 Oct 2008 19:17:33 +0400 Anton Vorontsov <[EMAIL PROTECTED]> wrote:
> The MPC837xE-MDS board's CPLD can auto-detect if the board is on the PIB, > standalone or acting as a PCI agent. User's Guide says: > > - When the CPLD recognizes its location on the PIB it automatically > configures RCW to the PCI Host. > - If the CPLD fails to recognize its location then it is automatically > configured as an Agent and the PCI is configured to an external arbiter. > > This sounds good. Though in the standalone setup the CPLD sets PCI_HOST > flag (it's ok, we can't act as PCI agents since we receive CLKIN, not > PCICLK), but the CPLD doesn't set the ARBITER_ENABLE flag, and without > any arbiter bad things will happen (here the board hangs during any config > space reads). > > In this situation we must disable the PCI. And in case of anybody really > want to use an external arbiter, we provide "pci_external_aribter" > environment variable. > > Signed-off-by: Anton Vorontsov <[EMAIL PROTECTED]> applied to mpc83xx/next. Thanks, Kim _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
