Hi All,
Well, this problem has strangely resolved
itself!!
After a lot of hacking, and attempts, it
is now booting beautifully (Thanks guys!!!)
The only thing that I changed was the
early printK uartlite address, to be the uartlite address in my system.
It seems after I did this, it all worked.
I’m not sure why this would be, but I hope to be able to repeat J
I also got dhcp working – For those
who are interested and have not gotten it to work, its very simple to enable:
1) Enable in the Kernel – Customize Kernel
Settings -> Networking -> Networking Options -> Select Packet Socket
2) Enable in System Settings –
Customize Vendor/User Settings -> System Settings -> Network Address
-> Slelect Obtain IP address automatically
3) Enable the dhcpcd app - –
Customize Vendor/User Settings -> Network Applications -> dhcpcd-new
And dhcp will be used when the board
boots.
It’s now printing the voltages and
temperatures of the V-5 chip over the webserver J
Thanks again to everyone who helped
resolve this.
I don’t know if the early printk was
really the root cause, or why the uartlite settings were not directly picked up
and used, but I think it’s probably something worth checking for others
if they are getting no output at all at boot time.
Cheers
John
From: John Mcgrath
Sent: Tuesday, February 26, 2008
12:10 PM
To: 'microblaze-uclinux@xxxxxxxxxxxxxx'
Subject: RE: [microblaze-uclinux]
Using PetaLinux v0.3-rc1 - do kernel settings EVER need to be set/changed?
Thanks Christian,
Thanks also to John Williams for his
previous reply on the correct cores to use.
After applying all the advice here,
unfortunately I cannot get self-compiled 2.6 kernel to boot on the ML501 board.
I can get the pre-built kernel to boot though
– so at least my board and setup is somewhat sane.
What I
have done is:
- Project is EDK 9.2.02, for the ML501
with the BSB.
- Linux Kernel – 2.6
- HW uses is: MB 7.00.b, ethernetlite,
plus the usual. (MHS is attached).
- I use the ML501 platform supplied with
petalinux (I just need to change the driver in the kernel settings to use the
emaclite, as the default is the regular emac)
- I don’t change anything in the
customize vendor/user settings, except turn off copy to /tftpboot
(the defaults here look ok)
- I did use the petalinux-copy-autoconfig,
and did see that the Kconfig file does indeed get copied to the
arch/microblaze/platform/ML501 location.
So what
works is:
- FS-Boot – works fine, and I can
download the U-boot srec.
- U-Boot then comes online and I can
successfully use the autobringup2.6 (modified slightly to look for image.ub
instead of image.2.6.bin).
What
doesn’t work:
- Everything goes fine until it comes to
the actual kernel boot – and I see nothing
on the output.
- If I look at xmd, I do see that the
processor is at least in the right ‘ball-park’ – the
‘PC’ is looping somewhere around address 0x90004000 (my DDR memory
starts at 0x90000000). Seems to be caught in an infinite loop.
- I also tried downloading the image.bin
via the xmd dow command, and this also booted with the exact same result.
So my guess is the image is missing
something very fundamental, as it’s not printing anything at all, but the
HW looks good (as FS-Boot and U-Boot work), and I think I followed the
guidelines correctly!
Any tips are greatly appreciated. My goal
is to simple have a bare-bones uclinux system for ML501, which has support for
the XPS_SYSMON_ADC peripheral (so I can print on-chip voltages and temperatures
via thttpd).
This is just for a little demo of the V5
System Monitor / ADC functionality.
I originally wanted to write some kind of
driver for this (or even link into the acpi standard)…but I’m
thinking even a simple mmap() call / direct read of the registers to get the
data will do for now!!
Cheers
John
From:
owner-microblaze-uclinux@xxxxxxxxxxxxxx
[mailto:owner-microblaze-uclinux@xxxxxxxxxxxxxx] On Behalf Of Cristian-Raul CIRESSAN
Sent: Tuesday, February 26, 2008
1:47 AM
To:
microblaze-uclinux@xxxxxxxxxxxxxx
Subject: Re: [microblaze-uclinux]
Using PetaLinux v0.3-rc1 - do kernel settings EVER need to be set/changed?
I've been through this pain recently for a custom board. Here is
what I found. Hope I will be answering at least part of your questions. The
sequence of steps as mentioned in the developer.petalinux.com is just OK -- I
would say very helpful, disregarding the fact it is outdated.
However, you may stumble on some problems during kernel compilation
depending on the settings you have made.
1) the fact the fs-boot does not want to compile (due to some missing
defines) if there is no
FLASH memory in your design ...
2) the libz error (which was signaled/solved on the forum)
3) cannot compile u-boot separately ... with make u-boot (because some
include folders are not properly created or somenthing similar). However a
simple make works!
4*) In device drivers -> character devices -> serial... you
have to set correctly "XIlinx Uartlite" or other, otherwise the
.../microblaze/platform/common content will not compile and you get a
misleading linker error (something like built-in.o not found )
5) carefully set the ethernet network IP (EMAC, Emaclite or other)
6) there are other settings I do not recall ...
What I have done in order to help myself is to go through all the
settings for an existing platform (ML501 if I remember well) and write down the
settings used there -- I only considered the settings for the "reference
platform" and ignored the LEDS/GPIOs/Buttons etc.
Doing this I managed to get the kernel compiled.
P.S: to answer your subject question: yes they have to changed!
John
Mcgrath <john.mcgrath@xxxxxxxxxx> wrote:
I would like to build a petalinux system for a V5
board.
I’ve noticed that all the latest documentation
on developer.petalinux.com
From all I can read, it appears that whenever
‘Customize Kernel Settings’ is mentioned, it says not to touch these
settings, as the default configuration is ok.
My question is – is this only ok if we use one
of the pre-defined platforms in the Vendor/Product selection?
What if a new platform is created using the
petalinux-new-platform command? Will the kernel defaults still be ok?
I tried digging around and the only reference I could
find to changing the kernel settings is in the “petalinux from
scratch”, which seems to be pretty outdated when compared to the current
(v0.30) release (some of the sub-menu items don’t appear to exist).
So in short – do I ever need to touch the
‘Customize Kernel Settings’ section – or are the defaults
always good for building V5 / EDK 9.2 MB designs?
Any info on this is appreciated!!
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