[U-Boot] Porting to custom board with a PXA270

[Attila Sukosd]

Dear U-booters,

I'm in the process of writing my bachelor thesis about porting Linux to
custom board made by a company here in Denmark. As a part of this process, I
am also trying to port U-boot to the board with limited success so far,
unfortunately.

As I've mentioned in the topic, it has a PXA270, with 16 megs of Intel
Strata P30 flash and 16MB of some Mobile SDRAM MT48H8M16LF. As far as I'm
aware, this should be a relatively common configuration...

I started off by basing my port on the balloon3, as it seemed to be very
clean and similar in specs.
I've set up the clocks, memory registers and gpios, but i seem to be hitting
some weird issues.

First, here is my boot log:

U-Boot 2010.12-rc1-00026-g0c0892b-dirty (Nov 18 2010 - 15:51:10)

U-Boot code: 00000000 -> 0002CEFC  BSS: -> 0006A700
monitor len: 0006A700
ramsize: 01000000
TLB table at: a0ff0000
Top of RAM usable for U-Boot at: a0ff0000
Reserving 425k for U-Boot at: a0f85000
Reserving 264k for malloc() at: a0f43000
Reserving 24 Bytes for Board Info at: a0f42fe8
Reserving 92 Bytes for Global Data at: a0f42f8c
New Stack Pointer is: a0f42f88
RAM Configuration:
Bank #0: a0000000 16 MiB
relocation Offset is: a0f85000
monitor flash len: 0002CEFC
Now running in RAM - U-Boot at: a0f85000
Using default environment

himport_r: can't malloc 72 bytes, ret = (null)
ERROR: Me sad :( Environment import failed: errno = -1 ret: -2

at env_common.c:195/set_default_env()
data abort
pc : [<e1a00000>]          lr : [<a0f94aa0>]
sp : a0f42f18  ip : 0000000c     fp : 0001ce59
r10: ffffffe8  r9 : 00000000     r8 : a0f42f8c
r7 : fffffffe  r6 : 0d8aa869     r5 : a0f42f64  r4 : 000390b4
r3 : 0d8aa86a  r2 : ffffffe7     r1 : ffffffff  r0 : 00000000
Flags: nzcv  IRQs on  FIQs on  Mode USER_26
Resetting CPU ...

resetting ...

As far as I can tell, the bootloader successfully relocates itself into RAM
but fails to allocate 72bytes for the environment.

Before someone mentions, yes, I have added some extra lines to try to trace
back what could be going wrong..

I have attached a diff of my changes, hope you guys can help me.


Cheers,

Attila Sukosd
-------------- next part --------------
A non-text attachment was scrubbed...
Name: ik7.diff
Type: application/octet-stream
Size: 19348 bytes
Desc: not available
Url : http://lists.denx.de/pipermail/u-boot/attachments/20101121/ece5ed5d/attachment.obj