Re: [XenPPC] Cannot boot from local disk

[Kiyokuni Kawachiya <KAWATIYA@xxxxxxxxxx>]

> Kawachiya-san, seems that your problem today is different from
> yesterday.  You have however not answered any of my questions.

Some people in this list may be confusing, so let me summarize my boot
problem.

I am using JS20 (884241X) to run XenPPC, which is booted from local disk
through the /etc/yaboot.conf like this.

      # header section
      partition = 2
      timeout = 600
      default = xen
      # image section
      image = /boot/vmlinux
          label = linux
          root = /dev/hda3
          append = " quiet sysrq=1 insmod=sym53c8xx insmod=ipr"
          initrd = /boot/initrd
      # kawatiya 2006/08/24
      image = /boot/xen-3.0-unstable
          label = xen
          append = "xen -- root=/dev/hda3 sysrq=1 insmod=sym53c8xx
insmod=ipr"

However, I have several boot problems with recent versions.

1. I could not boot our internal version which is a little bit old version,
but contains the SMP patch.
   It failed like this.
            :
      Sharing PIC with Xen<6>mpic: Setting up MPIC "U3-MPIC" version 1.2 at
f8040000, max 4 CPUs
      mpic: ISU size: 124, shift: 7, mask: 7f
      mpic: Initializing for 124 sources
      mpic: Setting up HT PICs workarounds for U3/U4
      mpic:   - HT:01.0 [0xb8] vendor 1022 device 7450 has 4 irqs
      mpic:   - HT:02.0 [0xb8] vendor 1022 device 7450 has 4 irqs
      mpic:   - HT:03.0 [0xf0] vendor 1022 device 7460 has 24 irqs
      PID hash table entries: 1024 (order: 10, 8192 bytes)
      Maple: Found RTC at IO 0x1070
      Console: colour dummy device 80x25
      Dentry cache hash table entries: 32768 (order: 6, 262144 bytes)
      Inode-cache hash table entries: 16384 (order: 5, 131072 bytes)
      Memory: 185884k/196608k available (5296k kernel code, 10416k
reserved, 1240k data,

      I know this is caused by the SMP patch.

2. When I reverted xen/arch/powerpc/setup.c to non-SMP version, I
encountered another problem.
            :
      All bugs added by David S. Miller <davem@xxxxxxxxxx>
      Root-NFS: No NFS server available, giving up.
      VFS: Unable to mount root fs via NFS, trying floppy.
      VFS: Cannot open root device "<NULL>" or unknown-block(2,0)
      Please append a correct "root=" boot option
      Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(2,0)
       <0>Rebooting in 180 seconds..

      It seems that boot parameters (root=/dev/hda3) is not passed to dom0
Linux.

3. I also cannot boot the official XenPPC in XenSource, which I already
reported.
            :
      Welcome to yaboot version 10.1.14-r716.SuSE
      booted from '/ht/ata@4,1/disk@0'
      Enter "help" to get some basic usage information
      boot: xen
      Please wait, loading kernel...
      Can't find a loadable segment !
      boot:

      I think this is related to the boot wrapper removal.


Kiyokuni KAWACHIYA / IBM Tokyo Research Laboratory


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