Thread (2 messages) 2 messages, 2 authors, 2005-12-16

Re: [U-Boot-Users] Help required to bring up kernel from U-Boot

flat view

From: Wolfgang Denk <hidden>
Date: 2005-12-16 10:11:04
Also in: u-boot

In message [ref] you wrote:
I copied uImage to location 0x04000000 and  the Load Address=0x00000000 
and Entry point=0x00000000.  The bootm 0x04000000 gives the o/p 
"Transferring Control to Linux" and then nothing comes. Where is the 
wrong?
This is a FAQ. Please see http://www.denx.de/wiki/DULG/Faq
1. What are the minimum information Linux needs from U-Boot to come up 
properly?  In the Linux source tree we have put some printk statement and 
found that base address of SDRAM, size, etc are passed correctly to Linux 
by U-Boot. 
Be careful with printk() at inappropieate places (i.e. too early).

But tell me - how where you  able  to  see  anthing  with  printk  if
"nothing comes" as you write above ???
2. Is the info passed from U-Boot is sufficient enough to make the kernel 
up?
Yes, of course. It works on thousands of systems.
3. If not, where should I concentrate in Linux tree?
On your changes.

And please keep this off the U-Boot list. It is off topic here.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
CONSUMER NOTICE:  Because  of  the  "Uncertainty  Principle,"  It  Is
Impossible  for  the  Consumer  to  Find  Out  at  the Same Time Both
Precisely Where This Product Is and How Fast It Is Moving.
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help