EP440XS board boot problem(Note:similart to Sequoia)

EP440XS board boot problem(Note:similart to Sequoia)

[Allan Wang]

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I resend my message since my last message has wrong coding.


I am new to the list. I am still newbie to embedded linux. I have bought an ep440xs board which is similar to sequoia board. u-boot is working. I am trying to make it run linux.  I have the following problems and need your help. Thank you very much:


I am using linux kernel 2.6.30.4. I encounter 2 problems:
1. After console_init() is called inside start_kernel(), the console starts printing garbage like:
Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
serial8250.0: ttyS0 at MMIO 0x1ef600300 (irq = 16) is a 16550A
������������������������������
����������������������������
���������������������������������
������������������������������
�����������������.
2. It pakics when mounting the root file system(NFS):
(gdb) bt
#0  panic (fmt=0xc0290e94 "VFS: Unable to mount root fs on %s")
at kernel/panic.c:70
#1  0xc02d8ce0 in mount_block_root (name=0xc0290de4 "/dev/root", flags=0x8001)
at init/do_mounts.c:272
#2  0xc02d9084 in prepare_namespace () at init/do_mounts.c:415
#3  0xc02d81ec in kernel_init (unused=<value optimized out>) at init/main.c:885
#4  0xc000de60 in kernel_thread ()
There is a patch for Sequoia board to delete /chosen part in sequoia.dts, is /chosen required?

Allan



      

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Re: EP440XS board boot problem(Note:similart to Sequoia)

[Wolfgang Denk]

Dear Allan Wang,

In message <401793.31718.qm@web52903.mail.re2.yahoo.com> you wrote:
>
> I am new to the list. I am still newbie to embedded linux. I have
> bought an ep440xs board which is similar to sequoia board. u-boot is
> working. I am trying to make it run linux. I have the following
> problems and need your help. Thank you very much:

Which exact version of U-Boot are you running on this board?

I guess this is a out-of-tree port, i. e. not part of the mainline
U-Boot repository - so are you sure that device tree support is
enabled in your version of U-Boot?
> 
> I am using linux kernel 2.6.30.4. I encounter 2 problems:
> 1. After console_init() is called inside start_kernel(), the console starts printing garbage like:
> Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
> serial8250.0: ttyS0 at MMIO 0x1ef600300 (irq = 16) is a 16550A
> ������������������������������
...

What is your exact boot command?

Which boot arguments do you pass to the kernel?

What is ytour console baud rate in U-Boot, and what sort of "console="
boot argument do you pass to the Linux kernel?

What does your device tree look like?


> 2. It pakics when mounting the root file system(NFS):
> (gdb) bt
> #0 panic (fmt=0xc0290e94 "VFS: Unable to mount root fs on %s")

So what is the "%s" argument here? Which sort of root file system are
you trying to mount - NFS, ramdisk, UBIFS, ... ?

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
"He only drinks when he gets depressed." "Why does he get depressed?"
"Sometimes it's because he hasn't had a drink."
                                     - Terry Pratchett, _Men at Arms_

Re: EP440XS board boot problem(Note:similart to Sequoia)

[Allan Wang]

Hello, Mr Denk,=0A=0AThank you for your help. My answer to your questions a=
re between the lines. Attached is the dts file I use.=0A=0ABest regards,=0A=
=0AAllan=0A=0A=0A=0A----- Original Message ----=0AFrom: Wolfgang Denk <wd@d=
enx.de>=0ATo: Allan Wang <aiyuanwang@yahoo.com>=0ACc: linuxppc-dev@lists.oz=
labs.org=0ASent: Tue, December 1, 2009 6:10:22 PM=0ASubject: Re: EP440XS bo=
ard boot problem(Note:similart to Sequoia)=0A=0ADear Allan Wang,=0A=0AIn me=
ssage <401793.31718.qm@web52903.mail.re2.yahoo.com> you wrote:=0A>=0A> I am=
 new to the list. I am still newbie to embedded linux. I have=0A> bought an=
 ep440xs board which is similar to sequoia board. u-boot is=0A> working. I =
am trying to make it run linux. I have the following=0A> problems and need =
your help. Thank you very much:=0A=0AWhich exact version of U-Boot are you =
running on this board?=0A=0A=3D> version=0A=0AU-Boot 1.1.6 (Oct 25 2009 - 1=
3:26:41)=0A=0A=0AI guess this is a out-of-tree port, i. e. not part of the =
mainline=0AU-Boot repository - so are you sure that device tree support is=
=0Aenabled in your version of U-Boot?=0A=0AThe device tree is not enabled i=
n u-boot. I am building cuImage, so the device tree is supported in kernel(=
2.6.30.4).=0A=0A> =0A> I am using linux kernel 2.6.30.4. I encounter 2 prob=
lems:=0A> 1. After console_init() is called inside start_kernel(), the cons=
ole starts printing garbage like:=0A> Serial: 8250/16550 driver, 4 ports, I=
RQ sharing enabled=0A> serial8250.0: ttyS0 at MMIO 0x1ef600300 (irq =3D 16)=
 is a 16550A=0A> =EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=
=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=
=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=
=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=EF=BF=BD=0A...=0A=0A=
What is your exact boot command?=0A=0AI tftp the cuImage to address 0x20000=
0 and bootm to boot.=0A=0AWhich boot arguments do you pass to the kernel?=
=0A=0Abootargs=3D$(bootargs) console=3DttyS0,$(baudrate)=0A=0AWhat is ytour=
 console baud rate in U-Boot, and what sort of "console=3D"=0Aboot argument=
 do you pass to the Linux kernel?=0A=0AThe u-boot sets it to 115.2k. the dt=
s file is set to 115.2k. Here is the boot parameter:=0Abaudrate=3D115200=0A=
=0AWhat does your device tree look like?=0A=0AI attached my dts file.=0A=0A=
> 2. It pakics when mounting the root file system(NFS):=0A> (gdb) bt=0A> #0=
 panic (fmt=3D0xc0290e94 "VFS: Unable to mount root fs on %s")=0A=0ASo what=
 is the "%s" argument here? Which sort of root file system are=0Ayou trying=
 to mount - NFS, ramdisk, UBIFS, ... ?=0A=0AI try to use NFS for the root f=
ile system.=0A=0ABest regards,=0A=0AWolfgang Denk=0A=0A-- =0ADENX Software =
Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel=0AHRB 165235 Munich=
, Office: Kirchenstr.5, D-82194 Groebenzell, Germany=0APhone: (+49)-8142-66=
989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de=0A"He only drinks when he=
 gets depressed." "Why does he get depressed?"=0A"Sometimes it's because he=
 hasn't had a drink."=0A                                     - Terry Pratch=
ett, _Men at Arms_=0A=0A=0A=0A      

Re: EP440XS board boot problem(Note:similart to Sequoia)

[Wolfgang Denk]

Dear Allan Wang,

In message <880531.39933.qm@web52905.mail.re2.yahoo.com> you wrote:
> 
> Thank you for your help. My answer to your questions are between the lines.
>  Attached is the dts file I use.

No, there is no attachment.

> Which exact version of U-Boot are you running on this board?
> 
> => version
> 
> U-Boot 1.1.6 (Oct 25 2009 - 13:26:41)

Um... why don't you update? This is really historic stuff...

> What is your exact boot command?
> 
> I tftp the cuImage to address 0x200000 and bootm to boot.
> 
> Which boot arguments do you pass to the kernel?
> 
> bootargs=$(bootargs) console=ttyS0,$(baudrate)

Please provide complete answers, and not only the snippets that seem
important to you. For example, what is the "$(bootargs)" above?

Maybe you provide a full boot log right from reset/power on, including
the output of the "printenv" command on your system.

> The u-boot sets it to 115.2k. the dts file is set to 115.2k. Here is the bo
> ot parameter:
> baudrate=115200

Arghhh.. Please provide the actual output fdrom your system, not just
some parts you copy.

> What does your device tree look like?
> 
> I attached my dts file.

No, it's missing.

> > 2. It pakics when mounting the root file system(NFS):
> > (gdb) bt
> > #0 panic (fmt=0xc0290e94 "VFS: Unable to mount root fs on %s")
> 
> So what is the "%s" argument here? Which sort of root file system are
> you trying to mount - NFS, ramdisk, UBIFS, ... ?
> 
> I try to use NFS for the root file system.

Then you can also run a packet sniffer (like wireshark) to see if any
NFS requests actually get sent to the targte, resp. where it stops).

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
Romulan women are not like Vulcan females. We are  not  dedicated  to
pure logic and the sterility of non-emotion.
	-- Romulan Commander, "The Enterprise Incident",
	   stardate 5027.3

Re: EP440XS board boot problem(Note:similart to Sequoia)

[Allan Wang]

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Hello, Mr. Denk,

I forgot to give you the uboot printenv output.
=> printenv
bootcmd=run flash_self
bootdelay=5
baudrate=115200
loads_echo=1
preboot=run setup_phys;echo;echo Type "run flash_nfs" to mount root filesystem over NFS;echo
netdev=eth0
hostname=ep440xs
nfsargs=setenv bootargs root=/dev/nfs rw nfsroot=$(serverip):$(rootpath)
ramargs=setenv bootargs ramdisk=65536 root=/dev/ram rw
addip=setenv bootargs $(bootargs) ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname):$(netdev):off panic=1
addtty=setenv bootargs $(bootargs) console=ttyS0,$(baudrate)
flash_nfs=run nfsargs addip addtty;bootm $(kernel_addr)
flash_self=run ramargs addip addtty;bootm $(kernel_addr) $(ramdisk_addr)
net_nfs=tftp 200000 $(bootfile);run nfsargs addip addtty;bootm
kernel_addr=fe000000
ramdisk_addr=fe180000
load=tftp 0x200000 u-boot.bin
update=protect off 0xfff60000 0xffffffff;era 0xfffa0000 0xffffffff;cp.b 0x200000 fffa0000 60000
upd=run load;run update
usbact=hostdev
fixedip=setenv bootargs $(bootargs) ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask):$(hostname):$(netdev):off panic=1
dhcp=setenv bootargs $(bootargs) ip=dhcp
initphy=mii w ${phy} 14 e3;mii w ${phy} 18 4101;mii w ${phy} 9 e00;mii w ${phy} 4 1e1;mii w ${phy} 0 9140;mii w ${phy} 0 1140
setup_phys=setenv phy 0;run initphy;setenv phy 1;run initphy;setenv phy
progee=mw 0x100000 0x87788252;mw 0x100004 0x0957a030;mw 0x100008 0x40082350;mw 0x10000c 0x0d050000;eeprom write 0x54 0x100000 0x0 0x10
diags=cp.b 0xFFF40000 0x40000 0x20000;go 0x40004
dhcp_user-class-id=u-boot_test
rootpath=/opt/ppc/ppc_4xx
bootfile=cuImage.ep440xs
ipaddr=192.168.0.201
netmask=255.255.255.0
ethaddr=00:01:ec:01:12:83
eth1addr=00:01:ec:81:12:83
ethact=ppc_4xx_eth0
gateway=192.168.0.1
bootargs=$(bootargs) console=ttyS0,$(baudrate)
serverip=192.168.0.196
gatewayip=192.168.0.1
stdin=serial
stdout=serial
stderr=serial
ver=U-Boot 1.1.6 (Oct 25 2009 - 13:26:41)

Thanks,

Allan


      

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