linux 2.6 boot failure with rfs installed in the flash disk (xupv2p + ppc)

Hi all,

After booting successfully the kernel with the ramdisk, I tried to boot the kernel with a root file system installed on the third partition of the flas= h
disk.=20
Partition 1: Type =3D FAT16, Size =3D 32Mbyte
Partition 2 : Type =3D Linux Swap, Size =3D 256Mbyte
partition 3: Type=3DLinux, Size =3D 950 Mbyte

I installed the filesystem (using BusyBox 1.12.1, and the script mkrootfs.s= h
written by Wofgang Klingauf), and I configured the kernel to support xsysac= e
driver.

I changed bootargs to "console=3DttyUL0,9600 root=3D/dev/xsa3 rw"; /* it wa= s
console=3DttyS0, root=3D/dev/ram rw*/

I rebooted the kernel, it stops after "Warning: unable to open an initial console."

The output of the console is as follows:

***************************************************************************=
**************
zImage starting: loaded at 0x00400000 (sp: 0x0059eefc) Allocating 0x377124 bytes for kernel ...
gunzipping (0x00000000 <- 0x0040c000:0x0059d133)...done 0x3545e8 bytes

Linux/PowerPC load: console=3DttyUL0,9600 root=3D/dev/xsa3 rw Finalizing device tree... flat tree at 0x40ae18
Using Xilinx Virtex machine description
Linux version 2.6.27-rc9 (dhouib@lo-lester-030) (gcc version 3.4.5) #29 PREEMPT Mon Nov 3 16:23:09 CET 2008
Zone PFN ranges:
DMA 0x00000000 -> 0x00010000
Normal 0x00010000 -> 0x00010000
Movable zone start PFN for each node
early_node_map[1] active PFN ranges

    0: 0x00000000 -> 0x00010000

Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024 Kernel command line: console=3DttyUL0,9600 root=3D/dev/xsa3 rw Xilinx intc at 0x41200000 mapped to 0xfdfff000
PID hash table entries: 1024 (order: 10, 4096 bytes)
clocksource: timebase mult[d55555] shift[22] registered
Console: colour dummy device 80x25
console [ttyUL0] enabled
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes) Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Memory: 256000k/262144k available (3256k kernel code, 5832k reserved, 128k data, 136k bss, 160k init)
Calibrating delay loop... 598.01 BogoMIPS (lpj=3D1196032) Mount-cache hash table entries: 512
net_namespace: 756 bytes
NET: Registered protocol family 16
PCI: Probing PCI hardware
NET: Registered protocol family 2
IP route cache hash table entries: 2048 (order: 1, 8192 bytes) TCP established hash table entries: 8192 (order: 4, 65536 bytes) TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 8192 bind 8192)
TCP reno registered
NET: Registered protocol family 1
Installing knfsd (copyright (C) 1996 [email protected]). msgmni has been set to 500
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
Serial: 8250/16550 driver4 ports, IRQ sharing disabled 40600000.serial: ttyUL0 at MMIO 0x40600003 (irq =3D 16) is a uartlite
brd: module loaded
loop: module loaded
xsysace 41800000.sysace: Xilinx SystemACE revision 1.0.12 xsysace 41800000.sysace: capacity: 3940272 sectors
xsa: xsa1 xsa2 xsa3
Xilinx SystemACE device driver, major=3D254
mice: PS/2 mouse device common for all mice
i2c /dev entries driver
TCP cubic registered
NET: Registered protocol family 17
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
VFS: Mounted root (ext2 filesystem).
Freeing unused kernel memory: 160k init
Warning: unable to open an initial console.
=20

*******************************************************************

I made a search in the net and I have found in (
http://rm-rfroot.net/files/courses/xupv2p/docs/carithers/report.pdf) that:
If we do not include the option to automatically mount the =E2=80=98/dev=E2= =80=99 file
system, the init process will not be able to open a terminal since =E2=80= =98console=E2=80=99
is listed in =E2=80=98/dev=E2=80=99 as a device.=20

But there was no option in the kernel config that enable /dev Automatically mount at boot.

=20

My questions are:

1. can i configure the kernel to automatically mount /dev at boot?

2. how can I configure correctly the ram size (the default options virtex4_defconfig are: CONFIG_BLK_DEV_RAM_COUNT=3D16 CONFIG_BLK_DEV_RAM_SIZE=3D8192). But I have an SDRAM of 256 Megabytes size.

=20

Thanks=20

Saadia

--=20
View this message in context: http://www.nabble.com/linux-2.6-boot-failure-=
with-rfs-installed-in-the-flash-disk-%28xupv2p-%2B-ppc%29-tp20306038p203060= 38.html
Sent from the linuxppc-embedded mailing list archive at Nabble.com.

Finally I created a node for ttyUL0 in /dev
mknod /dev/ttyUL0 c 5 0
mknod /dev/console c 5 1

Then I modified /etc/inittab (from klingauf mkrootfs), I replaced the line :12345:respawn:/sbin/getty 9600 tts/0
by
ttyUL0:12345:respawn:/sbin/getty -L ttyUL0 9600 vt100

Then I rebooted the kernel, and there were errors:

zImage starting: loaded at 0x00400000 (sp: 0x0059eefc) Allocating 0x377124 bytes for kernel ...
gunzipping (0x00000000 <- 0x0040c000:0x0059d133)...done 0x3545e8 bytes

Linux/PowerPC load: console=ttyUL0,9600 root=/dev/xsa3 rw Finalizing device tree... flat tree at 0x40ae18
Using Xilinx Virtex machine description
Linux version 2.6.27-rc9 (dhouib@lo-lester-030) (gcc version 3.4.5) #29 PREEMPT Mon Nov 3 16:23:09 CET 2008
Zone PFN ranges:
DMA 0x00000000 -> 0x00010000
Normal 0x00010000 -> 0x00010000
Movable zone start PFN for each node
early_node_map[1] active PFN ranges

    0: 0x00000000 -> 0x00010000

Built 1 zonelists in Zone order, mobility grouping on. Total pages: 65024 Kernel command line: console=ttyUL0,9600 root=/dev/xsa3 rw Xilinx intc at 0x41200000 mapped to 0xfdfff000
PID hash table entries: 1024 (order: 10, 4096 bytes)
clocksource: timebase mult[d55555] shift[22] registered
Console: colour dummy device 80x25
console [ttyUL0] enabled
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes) Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Memory: 256000k/262144k available (3256k kernel code, 5832k reserved, 128k data, 136k bss, 160k init)
Calibrating delay loop... 598.01 BogoMIPS (lpj=1196032) Mount-cache hash table entries: 512
net_namespace: 756 bytes
NET: Registered protocol family 16
PCI: Probing PCI hardware
NET: Registered protocol family 2
IP route cache hash table entries: 2048 (order: 1, 8192 bytes) TCP established hash table entries: 8192 (order: 4, 65536 bytes) TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 8192 bind 8192)
TCP reno registered
NET: Registered protocol family 1
Installing knfsd (copyright (C) 1996 [email protected]).
msgmni has been set to 500
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
Serial: 8250/16550 driver4 ports, IRQ sharing disabled 40600000.serial: ttyUL0 at MMIO 0x40600003 (irq = 16) is a uartlite
brd: module loaded
loop: module loaded
xsysace 41800000.sysace: Xilinx SystemACE revision 1.0.12 xsysace 41800000.sysace: capacity: 3940272 sectors
xsa: xsa1 xsa2 xsa3
Xilinx SystemACE device driver, major=254
mice: PS/2 mouse device common for all mice
i2c /dev entries driver
TCP cubic registered
NET: Registered protocol family 17
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
EXT2-fs warning: mounting unchecked fs, running e2fsck is recommended
VFS: Mounted root (ext2 filesystem).
Freeing unused kernel memory: 160k init
xsysace 41800000.sysace: kicking stalled fsm; state=8 task=2 iter=12 dc=128 xsysace 41800000.sysace: kicking stalled fsm; state=8 task=2 iter=12 dc=128 xsysace 41800000.sysace: transfer failure
xsysace 41800000.sysace: ctrl: 0000038a seccnt/cmd: 0308 ver:100c

    status:0017e31a  mpu_lba:001f91e5  busmode:   1
    error: 00000014  cfg_lba:00000000  fatstat:0000
xsysace 41800000.sysace: transfer failure
xsysace 41800000.sysace:     ctrl:  0000038a  seccnt/cmd: 0308      ver:100c
    status:0017e31a  mpu_lba:001f91e5  busmode:   1
    error: 00000014  cfg_lba:00000000  fatstat:0000

xsysace 41800000.sysace: kicking stalled fsm; state=8 task=2 iter=12 dc=128 xsysace 41800000.sysace: kicking stalled fsm; state=8 task=2 iter=12 dc=128 xsysace 41800000.sysace: kicking stalled fsm; state=8 task=2 iter=12 dc=128 xsysace 41800000.sysace: kicking stalled fsm; state=8 task=2 iter=12 dc=128 xsysace 41800000.sysace: kicking stalled fsm; state=8 task=2 iter=12 dc=128 xsysace 41800000.sysace: kicking stalled fsm; state=8 task=2 iter=12 dc=128 xsysace 41800000.sysace: kicking stalled fsm; state=8 task=2 iter=12 dc=128

Could someone help me please?
Thanks

View this message in context: http://www.nabble.com/linux-2.6-boot-failure-with-rfs-installed-in-the-flash-disk-%28xupv2p-%2B-ppc%29-tp20306038p20307909.html
Sent from the linuxppc-embedded mailing list archive at Nabble.com.

The sysace device can very easily get wedged up and the current driver doesn't handle it very gracefully. Usually the problem is seen if the board gets reset mid-transaction (which looks a little bid different from what you've got here; but is probably related). The problem should be solvable, but I haven't been able to spend any time working on it recently. You'll need to dig into the sysace documentation and figure out what the status/ctrl registers mean to find out why it is wedged up and see if you can teach the driver to work around it.

g.

Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.