Das U-Boot - Universal Bootloader

In message <41AD683B.9080105@...> you wrote:
> 
> So I guess I have a basic problem in understanding how to debug the 
> U-Boot with GDB.

Did you read the "Debugging" section in the manual?

See http://www.denx.de/twiki/bin/view/DULG/DebuggingUBoot

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@...
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Hi All
	In the file "include/flash.h" some # defines are there e.g for
Intel StrataFlash 28F320J5 three Macros (hash define values) are there:

#define INTEL_MANUFACT	0x00890089	/*INTEL manuf. ID in D23..D16,
D7..D0 */
#define INTEL_ID_28F320J5   0x00140014	/* 32M = 128K x 32	*/
#define FLASH_28F320J5	0x0085   /* Intel 28F320J5 (  4M = 128K x 32 )	*/

Since I am using Intel StrataFlash 28F256J3, I have to define the three
required macros accordingly:

#define INTEL_MANUFACT	0x00890089	/*INTEL Manufacturer. ID */
#define INTEL_ID_28F256J3   0x001D001D /*Device ID*/


#define FLASH_28F256J3            /*Internal Flash Identification Code*/

I got the Device Id value from the Intel Site but I didn't found any thing
like Internal Flash Identification Code. Is this value is to be supplied by
the vendor if not then what value should I have to assign to the Macro
FLASH_28F256J3.

Best Regards,
Vikrant Basotra

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Hi,
I'm totally new to the world of porting U-Boot (or other boot loaders) 
to new hardware.

I have an older version of U-Boot (0.4.5) that was ported to 2 custom 
made boards we have, based on the MPC5200 CPU, and the IceCube 
evaluation board. Both has the same U-Boot up and running.

We now have a new board, base on the same design, but with some 
modification.

I have BDI2000 up and running, and I can access the board's memory, 
flash, cpu registers etc.

When I try to run the same U-boot, it, as can be expected, fails to run, 
and stop very soon after startup (no message comes out on the serial 
console).

I've tried to connect with GDB to debug, and I manage to do it, then 
step few commands, and I get SIGSTOP. To make sure that this is not a 
problem of the new board, I've tried the same with a working board, and 
the U-Boot fails at the same place (right after the starting point). On 
the other hand, if I don't try to do a step by step debugging, but give 
a "cont" command, the U-boot (on the older board) does work.

So I guess I have a basic problem in understanding how to debug the 
U-Boot with GDB.

Any help (either specific, or pointers to guides), will be great.

Thanks,
Ilan

Hi all. I'm porting u-boot to a custom board with CPU S3C44B0X now.
I modified include/configs/B2.h accroding to my configurations.
And I don't know how to set the u-boot's console as serial port.
Thanks for your replies.

post to this list

Thomas Frieden <ThomasF@...>
wrote:
> Sam Song wrote:
> > I misused CONFIG_MENUKEY in my test program and
> > found an error but not quite sure. Pls check it.

> Thanks.

So the patch I did is good for use?

> >BTW, CONFIG_MENUKEY and CONFIG_MENUCOMMAND is only
> >used in the AmigaOneG3SE board, which you

> The AmigaOne version has a built-in menu system
> similar to the usual PC
> BIOSes. It implements a new command "menu" which
> brings up the menu, and
> during autoboot, pressing the menu key will bring up
> the menu
> automatically (similar to pressing "del" on a PC).

Uh, interesting to me. What content of the menu? Could
we set or choose sth in it?

Nice to see your reply,

=====
Best regards,

Sam

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In message <200411292219.25317.ccool@...> you wrote:
> 
> I found out a little something in the CVS version of U-boot about the 
> RPXlite_DW addapted by Sam Song.
> 
> In the file 
> include/configs/RPXlite_DW.h
> at line 324
> I had to replace
> #define CFG_OR1_PRELIM	( CFG_OR_AM_SDRAM | CFG_OR_TIMING_SDRAM )
> for
> #define CFG_OR1_PRELIM          0xFF000E00
> 
> and at line 353-354
> I had to replace
> #define CFG_MAMR_9COL  ((CFG_MAMR_PTA << MAMR_PTA_SHIFT)  | MAMR_PTAE | \
> 			MAMR_AMA_TYPE_1 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A10)
> by
>  #define CFG_MAMR_9COL 0x20802000

Argh... Is it too much to ask you to provide the information  in  the
same  readable  format  as  used  in the original coinfig file, i. e.
broken down into separate, readable parts, instead of just throwing a
hard-coded hex number on us?

> If I did not change those two register, U-boot would get stuck at the DRAM
> detection and would only find 1K (instead of the 16M on my board).

So let's have a look what you did.

You changed the OR setting from  0xF800....  into  0xFF00....,  which
means  that instead oif the previously used mapping of 128 MB you now
only map 64 MB. [I really wonder why you not redefined SDRAM_MAX_SIZE
as 0x04000000 - was too much work or what?]

And you changed MAMR_AMA_TYPE_1 into MAMR_AMA_TYPE_0  (Addess  Multi-
plexing Type 0), and MAMR_G0CLA_A10 into MAMR_G0CLA_A11 (General Line
0 : A10).

And you still use the name CFG_MAMR_9COL for this  definition,  which
is  misleading at best, because what you changed means that you don't
have a 9 column SDRAM on your board, but are using a 8 column SDRAM.

> I`m sending this as a simple information.  I know my method is not the best
> way to define thoses register, but I though that maybe the other ways to 

Indeed, it is not the best way. Actually it is a quick and ugly  hack
and  not  usable,  as  it breaks U-Boot for all the other boards that
worked fine so far.



What we learned is that there seems to be RPXlite_DW boards out there
that use 8 column SDRAM, and others (most?) that use 9 column  SDRAM.
The  correct  fix  to  this would be to make the SDRAM initialization
code automatically detect if 8 or 9 column SDRAM is used  and  adjust
the  settings  as  needed. Example code for doing exactly this can be
found in the TQM8xxL configurations (i. e. in board/tqm8xx/tqm8xx.c).

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@...
Monday is an awful way to spend one seventh of your life.

In message <41AC5D21.8040107@...> you wrote:
>
> I suppose that will only work if I write a custom SDRAM-setup-procedure 
> ..../u-boot/board/CUSTOMBOARD/customboard.c ? Is that right?

You cannot avoid this, right (you need it even if you set  up  for  a
fixed memory size only).

> If so, is there any documentation about what needs to be done there?

Sure. See the processor's User's manual and related documentation.

> Well... any hints (like, for example, "RTFM manual/ressource name") are 
> welcome.

Here we go: RTFM the processor documentation and related material ;-)

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@...
Too much of anything, even love, isn't necessarily a good thing.
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In message <eae046ff04113002393bdde623@...> you wrote:
> 
> Now to boot from the image, I'm planning to do the following,
> 
> 1> Copy the Image from the flash to the RAM,
> 2> and then give the control to the image location in RAM (using the
> bootm command).

No. "bootm" will automatically load the image no matter where it  is.
There is no need for an additional copy to RAM.

> Finally the board has to boot from the harddisk, and the IDE is
> interfaced to the CPU through GPIOs,
> Is there any code in which the IDE initialization is done using the
> GPIOs, since we are not getting how to give the IDE_BASE_ADDR.

All existing code assumes that there is  a  way  to  access  the  IDE
controll,  status and data registers. I have no idea what you mean by
"using GPIOs" or how you can access an IDE controller that way.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@...
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hi:
My system is Lite5200 with DENX Embedded Linux running on it.I want to connect USB mass storage devices to my computer's USB port.But I found there is no driver in kernel.(when I use 'make xconfig' the USB mass storage devices driver is in grey).How can I download/install the driver and active my USB disk?
BestRegards
zhonglei

Hi All,

I'm working on a PXA255 reference board, 

I'm able to get u-boot prompt on my serial console, 
I appended the kernel image with the u-boot.bin file, and write the
new image onto the flash.

But when I give the address from where my kernel is starting (in the
appended .bin file), I can just see the message

starting application at 0xa000ebc4....
                            (which is the address of the kernel )

and stops there only. 

How can I check whether the bootloader and kernel are copied to the
ram from the flash, as I'm not using the network features to download
the image.

TIA

-- 
Sharad P.Katti

I'm still into porting u-boot to a full-custom board.
The u-boot README says that the u-boot will scan for my SDRAM and find 
out how much I have.
I suppose that will only work if I write a custom SDRAM-setup-procedure 
..../u-boot/board/CUSTOMBOARD/customboard.c ? Is that right?

If so, is there any documentation about what needs to be done there?
I believe that the sdram_table array used in all those board_name.c 
files contains hexadecimal encoded instructions programming the UPM.. am 
I right?

Well... any hints (like, for example, "RTFM manual/ressource name") are 
welcome.

Peter Asemann

Hi Stefan,

>Sorry if I jump into this thread this late!

No problem

> > I have a question about SDRAM detection code (cpu/ppc4xx/sdram.c).
> > I tested it with the following configurations:
>...
>Yes, you are right: There seems to be a problem with the refresh counter
>intialization in the sdram.c code (I am not referencing the spd_sdram.c
>code here!). But I am not sure that this explains why U-Boot is not
>running on your board with the 256mbit chips. We are running this code
>on our board with all kind of sdram's (64mbit, 128mbit, 256mbit and even
>512mbit) without any known problems. The 256mbit chips we use right now
>are the Micron MT48LC16M16A2-7E.
>
>But again there seems to be a problem which needs to be fixed. I can put
>this on my list or you could send a patch! ;-)

Actually we have just found a small hardware related problem
that prevented SDRAM to work and we fixed it.
Nevertheless the counter is wrong but it seems SDRAM technology
is really reliable! If 512mbit chips work, it means that they tolerate
a refresh frequency that is 1/4 of the nominal value!!!
Unfortunatley processors are not so well behaved :-)
If I have the chance, I'll try to submit a patch.


Regards,

llandre

DAVE Electronics System House - R&D Department
web:   http://www.dave-tech.it
email: r&d2@...

Hello

I have also ported u-boot to the csb337 (2-3 months ago), but I was also
waiting for the arm920 cleanup to settle before submitting any patches.

BTW I do not use the ATMEL approach (primary bootloader).

Regards
Lars Munch

On Mon, Nov 29, 2004 at 11:31:38AM +0100, Dominic Rath wrote:
> I ported u-boot (quick, and really dirty) to the csb337 a few weeks
> ago, but seeing many posts from people who are actually working on a
> at91rm9200 cleanup, I decided to leave it as it is for the time being.
> It uses the approach seen in Atmels solution for the -DK board, with a
> primary bootloader initializing clocks and memory, and then
> uncompressing an u-boot image to RAM.
> It supports flash writing (through the cfi driver), and downloading
> via ethernet. I've been able to jump into a linux kernel image, which
> paniced at some point, but I'm not sure if that's the bootloaders
> fault, or just a misconfigured kernel.
> If you want to have a look at it, and need something that works, no
> matter how bad, you can find it at http://mmd.ath.cx/csb337-boot/
> The document there should explain what I did and why (flash layout, ...)
> 
> Regards,
> 
> Dominic
> 
> On Sun, 28 Nov 2004 20:07:30 +0100, Sascha Bechthold
> <a_s.bechthold@...> wrote:
> > I used ARMBOOT on the EPXA-Dev.-Board before and want
> > to use U-BOOT on the Cogent CSB337 Development Board
> > now.
> > 
> > Is there a port available for the CSB337 Dev. Board,
> > which is similar to the AT91RM9200DK or can I just
> > use the at91rm9200dk_config ?
> > 
> > What has to be done to get U-BOOT running on this
> > board ?
> > 
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