Re: Custom kernel bootloader crash on MTX604

["John D. Baker" <jdbaker%mylinuxisp.com@localhost>]

I was finally able to build a pristine GENERIC and it boots and runs
fine. (NetBSD-current as of 16 Feb 2008).

Then I tweaked the GENERIC config to turn on USB host adapters, hubs,
umodem/ucom and add cdce (diff below) and rebuilt everything.

The resulting netboot kernel (installation/floppy/generic_com0.fs),
which I copied to my tftp server as "nbsd-prep-test.fs" crashes
immediately upon loading.  Resetting the system via switch or PPC1-Bug
has no effect.  The sequence of events is as follows:

PPC1-Bug>nbo ,,,,,nbsd-prep-test.fs
Network Booting from: DEC21140, Controller 0, Device 0
Device Name: /pci@80000000/pci1011,9@e,0:0,0
Loading: nbsd-prep-test.fs

Client IP Address      = 192.168.17.11
Server IP Address      = 192.168.17.104
Gateway IP Address     = 192.168.17.8
Subnet IP Address Mask = 255.255.255.0
Boot File Name         = nbsd-prep-test.fs
Argument File Name     =

Network Boot File load in progress... To abort hit <BREAK>

Bytes Received =&2140828, Bytes Loaded =&2140828
Bytes/Second   =&713609, Elapsed Time =3 Second(s)

Residual-Data Located at: $1FF78000

Exception: Program (Illegal Instruction)
SRR0 =00800DA8 SRR1 =00080040 Vector-Offset =00700
IP     =00800DA8 MSR    =00000040 CR     =40000088 FPSCR  =00000000
R0     =008002A0 R1     =00808850 R2     =0000000F R3     =00600000
R4     =0000D5A8 R5     =00600000 R6     =00000000 R7     =00809958
R8     =000003F8 R9     =00600000 R10    =00800000 R11    =00809944
R12    =00000000 R13    =00000000 R14    =00000000 R15    =00000000
R16    =00000000 R17    =00000000 R18    =00000000 R19    =00000000
R20    =00000000 R21    =00000000 R22    =FFFFD16D R23    =00000000
R24    =00000000 R25    =FFFFFFFF R26    =00000000 R27    =00810384
R28    =00810370 R29    =008104C0 R30    =0000C864 R31    =0000D5A0
SPR0   =00000000 SPR1   =00000000 SPR8   =00800D80 SPR9   =00000000
00800DA8 EDACDD58  WORD        $EDACDD58
PPC1-Bug>


Below is a diff showing my modifications to the GENERIC configuration
file:

Index: sys/arch/prep/conf/GENERIC
===================================================================
RCS file: /cvsroot/src/sys/arch/prep/conf/GENERIC,v
retrieving revision 1.148
diff -u -p -r1.148 GENERIC
--- sys/arch/prep/conf/GENERIC  24 Jan 2009 05:06:07 -0000      1.148
+++ sys/arch/prep/conf/GENERIC  17 Feb 2009 12:49:22 -0000
@@ -397,20 +397,22 @@ ukphy*    at mii? phy ?                   # generic 
unknown
 # USB Controller and Devices

 # PCI USB controllers
-#uhci* at pci? dev ? function ?        # Universal Host Controller (Intel)
-#ohci* at pci? dev ? function ?        # Open Host Controller
+ehci*  at pci? dev ? function ?        # Enhanced Host Controller (2.0)
+uhci*  at pci? dev ? function ?        # Universal Host Controller (Intel)
+ohci*  at pci? dev ? function ?        # Open Host Controller

 # PCMCIA USB controllers
 #slhci*        at pcmcia? function ?           # ScanLogic SL811HS

 # USB bus support
-#usb*  at uhci?
-#usb*  at ohci?
+usb*   at ehci?
+usb*   at uhci?
+usb*   at ohci?
 #usb*  at slhci?

 # USB Hubs
-#uhub* at usb?
-#uhub* at uhub? port ?
+uhub*  at usb?
+uhub*  at uhub? port ?

 # USB HID device
 #uhidev*       at uhub? port ? configuration ? interface ?
@@ -433,8 +435,8 @@ ukphy*      at mii? phy ?                   # generic 
unknown
 #ulpt* at uhub? port ? configuration ? interface ?

 # USB Modem
-#umodem* at uhub? port ? configuration ?
-#ucom* at umodem?
+umodem* at uhub? port ? configuration ?
+ucom*  at umodem?

 # USB Mass Storage
 #umass*        at uhub? port ? configuration ? interface ?
@@ -447,6 +449,7 @@ ukphy*      at mii? phy ?                   # generic 
unknown
 # USB Ethernet adapters
 #aue*  at uhub? port ?         # ADMtek AN986 Pegasus based adapters
 #axe*  at uhub? port ?         # ASIX AX88172 based adapters
+cdce*  at uhub? port ?         # Communication Device Class for Ethernet
 #cue*  at uhub? port ?         # CATC USB-EL1201A based adapters
 #kue*  at uhub? port ?         # Kawasaki LSI KL5KUSB101B based adapters
 #url*  at uhub? port ?         # Realtek RTL8150L based adapters


Bootimage creation (or maybe load address?) for PReP seems brittle.  Is
there anyone else having this problem?

--
John D. Baker, KN5UKS                    NetBSD     Darwin/MacOS X
jdbaker[snail]mylinuxisp[flyspeck]com         OpenBSD            FreeBSD
BSD -- It just sits there and _works_!
GPG fingerprint:  D703 4A7E 479F 63F8 D3F4  BD99 9572 8F23 E4AD 1645