Re: [LinuxBIOS] PCI: Left over static devices. Check your Config.lb

[Steve Isaacs]

On Mon, 2007-12-10 at 13:19 -0800, ron minnich wrote:
> Your board is not working, and the best thing you can do is shrink
> down Config.lb until it works.

I performed a series of experiments stripping the Config.lb none of
which fixed my issue. The process I followed was to comment out devices
one at a time and see what the effect was. If a device had others nested
I commented out those as well. The results I observed either ran or
hung. If commenting a device caused a hang I power cycled the board and
tried again to verify that the result was repeatable -- all failures
were. I then un-commented the same device and repeated to verify that
the restoring the device in the config would run. If restoring the
device would run I then labeled the device as essential and moved to the
next in the list. Below I've included the results produced using this
method.

I'm thinking that stripping to the essential is a good thing but since
it didn't correct my problem I'm wondering if it might be an incorrectly
nested device.
> You need the ioapic, the 18. devices, and the superio. try starting there.
> > >   device pci 18.0 on end                    # Link 1
> > >   device pci 18.0 on end
>
> each 18. device connects to three HT channels. There's no real way to
> express this in PCI, so we got stuck with the three instances.

Something I learned is that in my case I need two 18.0s. The board I'm
using has nothing connected to link2 so I'm suspecting including a third
18.0 would hang the boot.

btw: I just now received YH's suggestions so will try that to see what
happens.

Here's the resulting config with the commented sections included:

device pci_domain 0 on
    chip northbridge/amd/amdk8
      device pci 18.0 on #  northbridge
                         #  devices on link 0
        chip southbridge/broadcom/bcm21000 # HT2100 VID=0x1166
          device pci 0.0 on # EXB0 DID=0x0140
          end
          device pci 1.0 off # EXB1 DID=0x0142
          end
          device pci 2.0 on # EXB2 DID=0x0144
          end
          device pci 3.0 off # EXB3 DID=0x0142
          end
          device pci 4.0 off # EXB4 DID=0x0144
          end
        end
        chip southbridge/broadcom/bcm11000 # HT1000
          device pci 0.0 on
          end
          device pci 0.1 on
          end
 #         device pci 1.0 on
 #           device pci e.0 on
 #           end
 #         end
 #         device pci 1.1 on
 #         end
 #         device pci 2.0 on
 #           device pci b.0 on
 #           end
 #           device pci b.1 on
 #           end
 #           device pci b.2 on
 #           end
 #           device pci c.0 on
 #           end
 #           device pci c.1 on
 #           end
 #           device pci c.2 on
 #           end
 #           device pci d.0 on
 #           end
 #           device pci d.1 on
 #           end
 #           device pci d.2 on
 #           end
 #         end
          device pci 2.1 on
          end
          device pci 3.0 on
          end
          device pci 3.1 on
          end
#          device pci 4.0 on
#          end
#          device pci 4.1 on
#          end
          device pci 6.0 on
            chip drivers/i2c/i2cmux2 # pca9544 smbus mux
              device i2c 71 on # MIS_ P40,28,39
              end #0 pca9544 0
              device i2c 71 on # HT_ P40,24,42
              end #0 pca9544 1
              device i2c 71 on # pca9544 2 P1_ P40,2,6,7
                chip drivers/generic/generic #dimm 0-0-0
                  device i2c 50 on
                  end
                end
                chip drivers/generic/generic #dimm 0-0-1
                  device i2c 51 on
                  end
                end
                chip drivers/generic/generic #dimm 0-1-0
                  device i2c 52 on
                  end
                end
                chip drivers/generic/generic #dimm 0-1-1
                  device i2c 53 on
                  end
                end
              end
              device i2c 71 on #pca9544 3 P2_ P40,8,12,13
                chip drivers/generic/generic #dimm 1-0-0
                  device i2c 50 on
                  end
                end
                chip drivers/generic/generic #dimm 1-0-1
                  device i2c 51 on
                  end
                end
                chip drivers/generic/generic #dimm 1-1-0
                  device i2c 52 on
                  end
                end
                chip drivers/generic/generic #dimm 1-1-1
                  device i2c 53 on
                  end
                end
              end
            end
          end
          device pci 6.1 on
          end
          device pci 6.2 on
            chip superio/smsc/sch4304
              device  pnp 2e.0 off  # Floppy
                io 0x60 = 0x3f0
                irq 0x70 = 6
                drq 0x74 = 2
              end
              device pnp 2e.3 on  # Parallel Port
                io 0x60 = 0x378
                irq 0x70 = 7
              end
              device pnp 2e.4 on  # Com 1
                io 0x60 = 0x3f8
                irq 0x70 = 4
              end
              device pnp 2e.5 on # Com 2
                io 0x60 = 0x2f8
                irq 0x70 = 3
              end
              device pnp 2e.6 on # RTC
                io 0x60 = 0x70
                io 0x62 = 0x72
              end
              device pnp 2e.7 on  # Keyboard
                io 0x60 = 0x60
                io 0x62 = 0x64
                irq 0x70 = 1
              end
            end
      end
#          device pci 6.3 off
#          end
#          device pci 6.4 on
#          end
#          device pci 6.5 on
#          end
#          device pci 6.6 on
#          end
        end # bcm11000
      end #  device pci 18.0
      device pci 18.0 on # Link 1
      end
#      device pci 18.0 on # Link 2
#      end
      device pci 18.1 on
      end
      device pci 18.2 on
      end
      device pci 18.3 on
      end
    end
  end #pci_domain