Re: Linux 2.6 boot failure on xup virtex II ppc405

Hi all,

After booting successfully the kernel without a root file system.

I  installed a file system on the flash disk. I used: BusyBox 1.12.1, and
the script mkrootfs.sh (written by=20

Wofgang Klingauf) to generate the rfs.

=20

I changed the boot arg in the kernel configuration as follows:

 [*] Default bootloader kernel arguments                                   =
                                =20
=E2=94=82 =E2=94=82=20
  =E2=94=82 =E2=94=82                                      (console=3DttyUL=
0,9600
root=3D/dev/xsysace/disc0/xsa3 rw) Initial kernel command string=20

=20

=20

Then I rebooted the kernel, and there were those errors :( :

=20

Linux/PowerPC load: console=3DttyUL0,9600 root=3D/dev/xsysace/disc0/part3 i=
p=3Don
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) #19
PREEMPT Fri Oct 31 15:41:03 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/xsysace/disc0/part3 =
ip=3Don
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: 257792k/262144k available (1564k kernel code, 4044k reserved, 84k
data, 89k bss, 76k init)
Calibrating delay loop... 598.01 BogoMIPS (lpj=3D1196032)
Mount-cache hash table entries: 512
msgmni has been set to 504
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
40600000.serial: ttyUL0 at MMIO 0x40600003 (irq =3D 16) is a uartlite
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
VFS: Cannot open root device "xsysace/disc0/part3" or unknown-block(0,0)
Please append a correct "root=3D" boot option; here are the available
partitions:
fe00    1970136 xsa (driver?)
  fe01      32098 xsa1
  fe02     265072 xsa2
  fe03    1020127 xsa3
Kernel panic - not syncing: VFS: Unable to mount root fs on
unknown-block(0,0)
Rebooting in 180 seconds..<2>init has generated signal 8 but has no handler
for it
note: swapper[1] exited with preempt_count 2
Kernel panic - not syncing: Attempted to kill init!
Rebooting in 180 seconds..Oops: Exception in kernel mode, sig: 8 [#1]
PREEMPT Xilinx Virtex
NIP: cf80ab60 LR: cf81fba0 CTR: 00000000
REGS: cf81faf0 TRAP: cf81fba0   Not tainted  (2.6.27-rc9)
MSR: 00000020 <IR>  CR: 44004022  XER: cf80ab68
TASK =3D cf814c00[1] 'swapper' THREAD: cf81e000
GPR00: 44000084 cf81fb50 00000006 c0190000 00029030 c0190000 00000030
cf81e000
GPR08: cf81fb20 004ca564 c01a0000 c01a0000 c01621a0 cf81fc58 cf814c00
cf81fd20
GPR16: c01a0000 c01648c0 cf814c00 c01a0000 cf81fbc0 c0026428 00000039
000000b4
GPR24: c01a4d70 ffffffff 00000000 000009b8 00000004 00000000 00000000
c01a0000
NIP [cf80ab60] 0xcf80ab60
LR [cf81fba0] 0xcf81fba0
Call Trace:
[cf81fb50] [ffffffff] 0xffffffff (unreliable)
Instruction dump:
XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX
---[ end trace 17f4c6d1c47d3b7d ]---
Fixing recursive fault but reboot is needed!
BUG: scheduling while atomic: swapper/1/0x00000003
Call Trace:
[cf81f8a0] [c0007704] show_stack+0x40/0x16c (unreliable)
[cf81f8d0] [c0020150] __schedule_bug+0x64/0x78
[cf81f8f0] [c013d108] __sched_text_start+0x390/0x3fc
[cf81f930] [c0027f10] do_exit+0x440/0x7b0
[cf81f970] [c000b594] _exception+0x0/0x1ac
[cf81f990] [c000b6a8] _exception+0x114/0x1ac
[cf81fae0] [c000e0fc] ret_from_except_full+0x0/0x4c
[cf81fb20] [cf81fc58] 0xcf81fc58

=20
Could someone help me please?

Thanks=20

Saadia=20



saadia dhouib wrote:

=20
Hi,
I have downloaded the latest linux kernel linux-2.6-xlnx.git from
http://git.xilinx.com/ .=20
Than I have downloaded the device tree generator  device-tree.git from th=

e

same site.
I launched edk 8.2.02, I designed a system with two powerpc cores:
ppc_405_0, ppc_405_1, and opb bus , a plb bus, and the following devices
with their memory map:
=20
BASE =09        HIGH =09           MODULE
0x00000000 =090x0FFFFFFF =09DDR_256MB_32MX64_rank1_row13_col10_cl2_5
0x40600000 =090x4060FFFF =09RS232_Uart_1
0x40C00000 =090x40C0FFFF =09Ethernet_MAC
0x41200000 =090x4120FFFF =09opb_intc_0
0x41800000 =090x4180FFFF =09SysACE_CompactFlash
=20
I generated the bitsteam system.bit.
After getting the device tree generator from
git://git.xilinx.com/device-tree.git, I have copied the 'bsp' directory
and contents so that it can be used by edk XPS. Then I selected
'device-tree' in the pull down menu labeled 'OS' in the Software Platform
Settings dialog box.=20
Then selected 'OS and Libraries' on the left, and entered the values for
'console device' and  'bootargs' (respectively=20
'RS232_Uart_1' and 'console=3DttyS0,9600 root=3D/dev/xsysace/disc0/part3
ip=3Don' ).
Then I generated libraries and  BSP, in the edk_project directory and not
in the linux src directory.
There were those warnings:
*************************************************************************=

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

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

*************************************************************************=

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

=20
I copied  <edk_project_path>/ppc_405_0/libsrc/device-tree/xilinx.dts to
<linux_path>/arch/powerpc/boot/dts/virtex405-ml405.dts .
 the device tree file looks like this:
*************************************************************************=

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

*************************************************************************=

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

/*
 * Device Tree Generator version: 1.1
 *
 * (C) Copyright 2007-2008 Xilinx, Inc.
 * (C) Copyright 2007-2008 Michal Simek
 *
 * Michal SIMEK [off-list ref]
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 * CAUTION: This file is automatically generated by libgen.
 * Version: Xilinx EDK 8.2.02 EDK_Im_Sp2.4
 *
 * XPS project directory: edk_300_100_linux_2-6
 */
=20
/dts-v1/;
/ {
=09#address-cells =3D <1>;
=09#size-cells =3D <1>;
=09compatible =3D "xlnx,virtex405", "xlnx,virtex";
=09model =3D "testing";
=09DDR_256MB_32MX64_rank1_row13_col10_cl2_5: memory@0 {
=09=09device_type =3D "memory";
=09=09reg =3D < 0x0 0x10000000 >;
=09} ;
=09chosen {
=09=09bootargs =3D "console=3DttyS0,9600 root=3D/dev/xsysace/disc0/part3 =

ip=3Don";

=09=09linux,stdout-path =3D "/plb@0/opb@40000000/serial@40600000";
=09} ;
=09cpus {
=09=09#address-cells =3D <1>;
=09=09#cpus =3D <0x1>;
=09=09#size-cells =3D <0>;
=09=09ppc405_0: cpu@0 {
=09=09=09clock-frequency =3D <300000000>;
=09=09=09compatible =3D "PowerPC,405", "ibm,ppc405";
=09=09=09d-cache-line-size =3D <0x20>;
=09=09=09d-cache-size =3D <0x4000>;
=09=09=09dcr-access-method =3D "native";
=09=09=09dcr-controller ;
=09=09=09device_type =3D "cpu";
=09=09=09i-cache-line-size =3D <0x20>;
=09=09=09i-cache-size =3D <0x4000>;
=09=09=09model =3D "PowerPC,405";
=09=09=09reg =3D <0>;
=09=09=09timebase-frequency =3D <300000000>;
=09=09=09xlnx,dcr-resync =3D <0x0>;
=09=09=09xlnx,deterministic-mult =3D <0x0>;
=09=09=09xlnx,disable-operand-forwarding =3D <0x1>;
=09=09=09xlnx,mmu-enable =3D <0x1>;
=09=09} ;
=09} ;
=09plb: plb@0 {
=09=09#address-cells =3D <1>;
=09=09#size-cells =3D <1>;
=09=09compatible =3D "xlnx,plb-v34-1.02.a", "simple-bus";
=09=09ranges ;
=09=09opb: opb@40000000 {
=09=09=09#address-cells =3D <1>;
=09=09=09#size-cells =3D <1>;
=09=09=09compatible =3D "xlnx,opb-v20-1.10.c", "simple-bus";
=09=09=09ranges =3D < 0x40000000 0x40000000 0x40000000 >;
=09=09=09Ethernet_MAC: ethernet@40c00000 {
=09=09=09=09compatible =3D "xlnx,opb-ethernet-1.04.a";
=09=09=09=09device_type =3D "network";
=09=09=09=09local-mac-address =3D [ 02 00 00 00 00 00 ];
=09=09=09=09reg =3D < 0x40c00000 0x10000 >;
=09=09=09=09xlnx,cam-bram-0-srl-1 =3D <0x1>;
=09=09=09=09xlnx,cam-exist =3D <0x0>;
=09=09=09=09xlnx,dev-blk-id =3D <0x1>;
=09=09=09=09xlnx,dev-mir-enable =3D <0x1>;
=09=09=09=09xlnx,dma-intr-coalesce =3D <0x1>;
=09=09=09=09xlnx,dma-present =3D <0x1>;
=09=09=09=09xlnx,err-count-exist =3D <0x1>;
=09=09=09=09xlnx,family =3D "virtex2p";
=09=09=09=09xlnx,fcs-insert-exist =3D <0x1>;
=09=09=09=09xlnx,half-duplex-exist =3D <0x1>;
=09=09=09=09xlnx,include-dev-pencoder =3D <0x1>;
=09=09=09=09xlnx,ipif-rdfifo-depth =3D <0x8000>;
=09=09=09=09xlnx,ipif-wrfifo-depth =3D <0x8000>;
=09=09=09=09xlnx,jumbo-exist =3D <0x0>;
=09=09=09=09xlnx,mac-fifo-bram-1-srl-0 =3D <0x0>;
=09=09=09=09xlnx,mac-fifo-depth =3D <0x40>;
=09=09=09=09xlnx,mii-exist =3D <0x1>;
=09=09=09=09xlnx,miim-clkdvd =3D <0x1f>;
=09=09=09=09xlnx,pad-insert-exist =3D <0x1>;
=09=09=09=09xlnx,reset-present =3D <0x1>;
=09=09=09=09xlnx,rx-dre-type =3D <0x0>;
=09=09=09=09xlnx,rx-include-csum =3D <0x0>;
=09=09=09=09xlnx,source-addr-insert-exist =3D <0x1>;
=09=09=09=09xlnx,tx-dre-type =3D <0x0>;
=09=09=09=09xlnx,tx-include-csum =3D <0x0>;
=09=09=09} ;
=09=09=09RS232_Uart_1: serial@40600000 {
=09=09=09=09clock-frequency =3D "";
=09=09=09=09compatible =3D "xlnx,opb-uartlite-1.00.b";
=09=09=09=09current-speed =3D <9600>;
=09=09=09=09device_type =3D "serial";
=09=09=09=09interrupt-parent =3D <&opb_intc_0>;
=09=09=09=09interrupts =3D < 1 0 >;
=09=09=09=09port-number =3D <0>;
=09=09=09=09reg =3D < 0x40600000 0x10000 >;
=09=09=09=09xlnx,baudrate =3D <0x9600>;
=09=09=09=09xlnx,clk-freq =3D <0x5f5e100>;
=09=09=09=09xlnx,data-bits =3D <0x8>;
=09=09=09=09xlnx,odd-parity =3D <0x0>;
=09=09=09=09xlnx,use-parity =3D <0x0>;
=09=09=09} ;
=09=09=09SysACE_CompactFlash: sysace@41800000 {
=09=09=09=09compatible =3D "xlnx,opb-sysace-1.00.c";
=09=09=09=09interrupt-parent =3D <&opb_intc_0>;
=09=09=09=09interrupts =3D < 0 2 >;
=09=09=09=09reg =3D < 0x41800000 0x10000 >;
=09=09=09=09xlnx,mem-width =3D <0x10>;
=09=09=09} ;
=09=09=09opb_intc_0: interrupt-controller@41200000 {
=09=09=09=09#interrupt-cells =3D <0x2>;
=09=09=09=09compatible =3D "xlnx,opb-intc-1.00.c";
=09=09=09=09interrupt-controller ;
=09=09=09=09reg =3D < 0x41200000 0x10000 >;
=09=09=09=09xlnx,num-intr-inputs =3D <0x2>;
=09=09=09} ;
=09=09} ;
=09} ;
}  ;
*************************************************************************=

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

*************************************************************************=

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

=20
Then cp <linux_path>/arch/powerpc/configs/40x/virtex4_defconfig
<linux_path>/.
=20
Then=20
cd <linux_path>
export ARCH=3Dpowerpc
export CROSS_COMPILE=3Dpowerpc-405-linux-gnu-
export
PATH=3D${PATH}:$HOME/xupv2p/opt/crosstool/gcc-3.4.5-glibc-2.3.5/powerpc-4=

05-linux-gnu/bin

make menuconfig
I disabled all the options and enabled only:
-------------------------------------------------------------------------=

---------------------------------------------------------------------------=
---------------------

Processor support ->  Processor Type AMCC 40x (!!!  there is not ppc 40x)=

 =20

Platform Support ->  Generic Xilinx Virtex board
Kernel options ->   Kernel support for ELF binaries  =20
                            Math emulation=20
                           Default bootloader kernel arguments=20
                             (console=3DttyS0,9600)    Initial kernel
command  string=20
                                     (simpleImage.virtex405-ml405)
Additional default image types
Device Drivers -> Character Devices -> Virtual Terminal
                                                           Serial Devices
->   [*] 8250/16550 and compatible serial=20
                                                                         =

            =20

[*]   Console on 8250/16550 and compatible serial port
                                                                         =

            =20

(4) Maximum number of 8250/16550 serial ports
                                                                         =

             =20

(4) Number of 8250/16550 serial ports to register at runtime       =20
=20
-------------------------------------------------------------------------=

---------------------------------------------------------------------------=
----------------

=20
Then make clean && make dep && make zImage
I obtained a binary zImage file (and not zImage.elf) !!!! and I obtained
simpleImage.virtex405-ml405.elf in <linux_path>/arch/powerpc/boot .=20
=20
I used xmd to generated a system.ace from the bitstream and the elf.
The report of xmd is:
*************************************************************************=

*****

*************************************************************************=

****

XMD% xmd -tcl genace.tcl -opt genace1.opt
Xilinx Microprocessor Debug (XMD) Engine
Xilinx EDK 8.2.02 Build EDK_Im_Sp2.4
Copyright (c) 1995-2005 Xilinx, Inc.  All rights reserved.
Executing user script : genace.tcl
=20
#######################################################################
XMD GenACE utility. Generate SystemACE File from bit/elf/data Files
#######################################################################
Using GenACE option file : genace1.opt
GenACE Options:
=09Board      : xupv2p
=09Jtag Devs  : xc2vp30
=09FPGA pos   : 1
=09JPROG      : true
=09HW File    :
/home/dhouib/xupv2p/edk_300_100_linux_2-6/implementation/system.bit
=09ACE File   : system3.ace
=09nCPUs      : 1
=20
=09Processor ppc_hw_1 Information
=09=09Debug opt : -debugdevice devicenr 1 cpunr 1
=09=09ELF files : simpleImage.virtex405-ml405-3.elf
=09=09Start PC Address : 0x00400000
=20
############################################################
Converting Bitstream
'/home/dhouib/xupv2p/edk_300_100_linux_2-6/implementation/system.bit' to
SVF file
'/home/dhouib/xupv2p/edk_300_100_linux_2-6/implementation/system.svf'
Executing 'impact -batch bit2svf.scr'
=20
Copying
/home/dhouib/xupv2p/edk_300_100_linux_2-6/implementation/system.svf File
to  system3.svf File
=20
=20
############################################################
Converting ELF file 'simpleImage.virtex405-ml405-3.elf' to SVF file
'simpleImage.virtex405-ml405-3.svf'
Target reset successfully
=09section, .text: 0x00400000-0x00408ed4
=09section, .data: 0x00409000-0x0040ac18
=09section, __builtin_cmdline: 0x0040ac18-0x0040ae18
=09section, .kernel:dtb: 0x0040ae18-0x0040be33
=09section, .kernel:vmlinux.strip: 0x0040c000-0x004c3ae1
=09section, .bss: 0x004c4000-0x004d0dd8
Downloaded Program simpleImage.virtex405-ml405-3.elf
Setting PC with program start addr =3D 0x00400000
PC reset to 0x00400000, Clearing MSR Register
=20
Copying simpleImage.virtex405-ml405-3.svf File to  system3.svf File
=20
=20
############################################################
Writing Processor JTAG "continue" command to SVF file 'sw_suffix.svf'
PC reset to 0x00400000, Clearing MSR Register
Processor started. Type "stop" to stop processor
=20
############################################################
Converting SVF file 'system3.svf' to SystemACE file 'system3.ace'
Executing 'impact -batch svf2ace.scr'
=20
SystemACE file 'system3.ace' created successfully
*************************************************************************=

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

*************************************************************************=

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

=20
=20
I copied the system3.ace (3 because it was the third kernel that I tested
:((( ) to the flash disk partition 1 (Type =3D FAT16, Size =3D 32Mo ).
And I booted the kernel.
I got fllowing message on the Terminal:=20
=20
*************************************************************************=

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

zImage starting: loaded at 0x00400000 (sp: 0x004c4efc)                   =

      =20

Allocating 0x1acdec bytes for kernel ...                                 =

      =20

gunzipping (0x00000000 <- 0x0040c000:0x004c3ae1)...done 0x1951b8 bytes   =

      =20

                                                                         =

      =20

Linux/PowerPC load: console=3DttyS0,9600 root=3D/dev/xsysace/disc0/part3 =

ip=3Don     =20

Finalizing device tree... flat tree at 0x40ae18                 =20
*************************************************************************=

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

=20
My Questions are:
1. Why he stops here?
2. Why I didn't obtained zImage.elf but simpleImage.virtex405-ml405.elf
3. Do I have to copy other files from my <edk_project_path> (xparameters.=

h

, drivers ) to the <linux_path> ? (I copied only the xilinx.dts file)
=20
Thanks
saadia
=20
=20
=20
=20
=20
=20

--=20
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