From: Wolfgang Denk <hidden> Date: 2003-10-02 12:17:28
In message <000e01c388dc$eb525510$0202a8c0@homevl9biy3v7e> you wrote:
quoted
Who gave you such (obviously wrong) instructions?
I take the example of u-boot to create the "uImage" and download it
to the board.
Please show me which U-Boot document uses 0x00400000 as load or entry
point address so I can fix this immediately. It is WRONG and CANNOT
work.
quoted
For PowerPC systems, both Load Address and Entry Point must be
specified as 0.
I have tried 0 before. But I get an exception in return. Could you
kindly give me some instructions how to run a kernel on this board?
Please start by giving a precise description of what you did. and
which error messages you got.
You "get an exception" - when? When running "mkimage"? When booting
the kernel? Which sort of exception? What is the exact error message?
Please include a complete log of your actions and all output.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd@denx.de
Totally illogical, there was no chance.
-- Spock, "The Galileo Seven", stardate 2822.3
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
I take the example of u-boot to create the "uImage" and download
it
quoted
to the board.
Please show me which U-Boot document uses 0x00400000 as load or entry
point address so I can fix this immediately. It is WRONG and CANNOT
work.
I take the "step" from u-boot's README file only. Because I got an
exception, I try to load it to other address. I use 0x00400000 because
zImage seems to be loaded at there....anyway, just a guess.
Please start by giving a precise description of what you did. and
which error messages you got.
Here is the exact step that I have done so far:
<Compile toolcahin by crosstools>
<Patch 2.4.22 kernel with patch on
http://www.kernel.org/pub/linux/kernel/ports/ppc/2.4/linuxppc-2.4.22.patch.bz2>
<Compile kernel with cross toolchain>
powerpc-405-linux-gnu-objcopy -O binary -R .note -R .comment -S vmlinux
linux.bin
gzip -9 linux.bin
./mkimage -A ppc -O linux -T kernel -C gzip -a 0x00000000 -e
0x00000000 -n "test" -d linux.bin.gz uImage
<run ftpd on host>
<boot up the board and enter command prompt of u-boot>
Here is the u-boot log:
U-Boot 0.4.0 (Sep 29 2003 - 11:44:31)
CPU: IBM PowerPC 405GP Rev. D at 200 MHz (PLB=100, OPB=50, EBC=33 MHz)
PCI sync clock at 33 MHz, external PCI arbiter enabled
16 kB I-Cache 8 kB D-Cache
Board: ### No HW ID - assuming WALNUT405
I2C: ready
DRAM: 64 MB
FLASH: 512 kB
In: serial
Out: serial
Err: serial
KGDB: kgdb ready
ready
BEDBUG:ready
Hit any key to stop autoboot: 0
=> tftpboot
ENET Speed is 100 Mbps - FULL duplex connection
TFTP from server 10.5.6.76; our IP address is 10.5.3.45
Filename 'uImage'.
Load address: 0x400000
Loading: #################################################################
#######################################################
done
Bytes transferred = 612748 (9598c hex)
=> bootm
## Booting image at 00400000 ...
Image Name: test
Created: 2003-10-03 1:08:06 UTC
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size: 612684 Bytes = 598.3 kB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
id mach(): done
MMU:enter
MMU:hw init
MMU:mapin
<hang>
You "get an exception" - when? When running "mkimage"? When booting
the kernel? Which sort of exception? What is the exact error message?
Please include a complete log of your actions and all output.
Maybe I do something wrong before. Now, it just hangs. Thanks your
suggestion about the load address.
Best Regards,
Jacky
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
I trace the code in kernel and I found some strange behaviors.
In the first case (using walnut_config provided in kernel source),
kernel hangs at mapin_ram();
However, if I turn off all unnecssary options and leave only serial
console, my kernel can run until init/main.c: kmem_cache_init();
As both hangs in memory related function, I tried to run a memory
test on my board in u-boot. But it hangs.
=> mtest 0 3ffffff
Pattern 00000000 Writing...
<hangs>
I tried smaller range (ffffff), it still hangs.
I am sure my board's memory is in good condition because VxWorks can run
very well on it. Have any idea? Thanks.
Best regards,
Jacky
----- Original Message -----
From: "Wolfgang Denk" <redacted>
To: "Jacky Lam" <redacted>
Cc: <redacted>
Sent: Thursday, October 02, 2003 8:17 PM
Subject: Re: Queston about Walnut
In message <000e01c388dc$eb525510$0202a8c0@homevl9biy3v7e> you wrote:
quoted
quoted
Who gave you such (obviously wrong) instructions?
I take the example of u-boot to create the "uImage" and download
it
quoted
to the board.
Please show me which U-Boot document uses 0x00400000 as load or entry
point address so I can fix this immediately. It is WRONG and CANNOT
work.
quoted
quoted
For PowerPC systems, both Load Address and Entry Point must be
specified as 0.
I have tried 0 before. But I get an exception in return. Could
you
quoted
kindly give me some instructions how to run a kernel on this board?
Please start by giving a precise description of what you did. and
which error messages you got.
You "get an exception" - when? When running "mkimage"? When booting
the kernel? Which sort of exception? What is the exact error message?
Please include a complete log of your actions and all output.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd@denx.de
Totally illogical, there was no chance.
-- Spock, "The Galileo Seven", stardate 2822.3
----- Original Message -----
From: "Jacky Lam" <redacted>
To: "Wolfgang Denk" <redacted>
Cc: <redacted>
Sent: Friday, October 03, 2003 12:11 PM
Subject: Re: Queston about Walnut
I trace the code in kernel and I found some strange behaviors.
In the first case (using walnut_config provided in kernel source),
kernel hangs at mapin_ram();
However, if I turn off all unnecssary options and leave only
serial
console, my kernel can run until init/main.c: kmem_cache_init();
Sorry, it should be sti() just after kmem_cache_init() instead.
As both hangs in memory related function, I tried to run a memory
test on my board in u-boot. But it hangs.
=> mtest 0 3ffffff
Pattern 00000000 Writing...
<hangs>
I tried smaller range (ffffff), it still hangs.
I am sure my board's memory is in good condition because VxWorks can
run
very well on it. Have any idea? Thanks.
Best regards,
Jacky
----- Original Message -----
From: "Wolfgang Denk" <redacted>
To: "Jacky Lam" <redacted>
Cc: <redacted>
Sent: Thursday, October 02, 2003 8:17 PM
Subject: Re: Queston about Walnut
quoted
In message <000e01c388dc$eb525510$0202a8c0@homevl9biy3v7e> you wrote:
quoted
quoted
Who gave you such (obviously wrong) instructions?
I take the example of u-boot to create the "uImage" and
download
it
quoted
quoted
to the board.
Please show me which U-Boot document uses 0x00400000 as load or entry
point address so I can fix this immediately. It is WRONG and CANNOT
work.
quoted
quoted
For PowerPC systems, both Load Address and Entry Point must
be
quoted
quoted
quoted
specified as 0.
I have tried 0 before. But I get an exception in return. Could
you
quoted
quoted
kindly give me some instructions how to run a kernel on this board?
Please start by giving a precise description of what you did. and
which error messages you got.
You "get an exception" - when? When running "mkimage"? When booting
the kernel? Which sort of exception? What is the exact error message?
Please include a complete log of your actions and all output.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd@denx.de
Totally illogical, there was no chance.
-- Spock, "The Galileo Seven", stardate 2822.3