Hi everyone,
I was wondering, is it possible to have U-Boot access a USB flash
drive (or use any other USB device ...) on a board using an MPC875?
If it is, could somebody point me in the right direction as to how to do this?
Thanks,
Mikhail Zaturenskiy
I was wondering, is it possible to have U-Boot access a USB flash
drive (or use any other USB device ...) on a board using an MPC875?
If it is, could somebody point me in the right direction as to how to do
this?
Assuming you put a working USB controller on your board, that should
be
get to work faster.
Mikhail Zaturenskiy
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BRGCLK and CLK2 as input clock to
my BRG1 and BRG4 if I ever decide to do so.
Hope somebody finds this useful.
Mikhail Zaturenskiy
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file to use BRG1 for everything and I think to use
BRGCLK as the BRG clock source (serial_setdivisor function).
My board is similar to the EP88xc by the way.
Thanks,
Mikhail Zaturenskiy
I decided to first try to switch over my BRG1 to use CLK2 as the input
clock, it looks like by default
we came up with, for
those interested here is the link
http://download.micron.com/pdf/technotes/TN4812.pdf . Now RAM burst
reads/writes are finally working properly :)
Mikhail Zaturenskiy
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to use BRG1 for everything and I think to use
BRGCLK as the BRG clock source (serial_setdivisor function).
My board is similar to the EP88xc by the way.
Thanks,
Mikhail Zaturenskiy
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If you have CONFIG_OF_BOARD_SETUP defined (if you don't that probably is the
answer to your missing #define question), you can run
fdt boardsetup
and then
fdt print /
to see what the fixed up tree looks like.
No I do not have this defined, when I include it I cannot compile
u-boot,
Got it... thanks to
http://www.mail-archive.com/u-boot-us...@lists.sourceforge.net/msg05111.html;.
I added the following to the very end of
u-boot-2009.03/board/ep88x/ep88x.c:
#if defined(CONFIG_OF_LIBFDT) defined(CONFIG_OF_BOARD_SETUP)
void ft_board_setup(void *blob, bd_t *bd)
{
Is it possible to look at a post-fixup device tree in u-boot? It looks
like u-boot is not updating my dts with the values for my RAM, cpu
frequency, etc. before loading the kernel.
Is there any obvious reason for this? Am I missing a #define of some sort?
The board fixup is a board-specific thing. Are you doing that in your board
configuration?
Didn't realize it was board-specific.
If you have CONFIG_OF_BOARD_SETUP defined (if you don't that probably is the
answer to your missing #define question), you can run
fdt boardsetup
and then
fdt
list to linuxppc-dev :)
Mikhail Zaturenskiy
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Hi Rahanesh,
Rahanesh wrote:
Hello Mikhail Zaturenskiy,
I am also trying to load Linux from uboot. When i try to boot Linux
from uboot it stops at Verifying Checksum and stops there. What might be
the reasson for this?
This is my output.
U-Boot 1.1.2 (Jun 10 2008 - 18:55:13
Now the usual hang, any more suggestions for what to do next?
Thanks a lot!
Mikhail Zaturenskiy
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If this all fails and as you are way past U-Boot, change the mailing
list to linuxppc-dev :)
Is this really way past U-Boot? I was under the impression that my
issue is at the hand-off point from U-Boot to the kernel and that the
kernel wasn't doing anything yet. Am I wrong?
When I use objdump to deassemble the object file, it seems
that timer is at 40108. Try go 0x40108 and read the FAQ[1] ;)
Cheers
Detlev
[1] http://www.denx.de/wiki/view/DULG/MyStandaloneProgramDoesNotWork
go 0x40108 did it, thanks! And thanks for the FAQ reference, knowing
this
suggestions are appreciated. Thanks!
Mikhail Zaturenskiy
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Hello,
I am using ELDK 4.2 and U-Boot 2009.03 on an EP88xC rev1.1 board
(MPC885 cpu) and am trying to get the example apps working (the ones
that come with U-Boot) following instructions on
http://www.denx.de/wiki/view/DULG/UBootStandalone#Section_5.12.2.;.
examples/hello_world.bin worked fine:
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