[U-Boot-Users] Board HW ID

[Seb James]

On Wed, 2003-08-27 at 14:31, Wolfgang Denk wrote:
> Dear Seb,
> 
> in message <1061989794.3350.68.camel at xerxes.hypercube> you wrote:
> > 
> > > YOU DID NOT READ THE DOCUMENTATION!!!
> 
> repeat(100);
> 
> > > Not exactly. Some parts (like internal revision code) are NOT printed
> > > on the module.
> > 
> > And these are found in flash, start address 0x1ffc0, I think.
> 
> Right.
> 
> > I followed the instructions from the ppcboot howto on the denx website:
> 
> It seems you did so only partially.

This is the section, from http://www.denx.de/e/doc/TQM8xxL/ppcboot.php
which I didn't read:

-----------------------------------
4.5.1.2. Board Identification Data
All TQM8xxL boards use a serial number for identification purposes.
Also, all boards have at least one ethernet (MAC) address assigned. You
may lose your warranty on the board if this data gets lost. Before
installing PPCBoot or otherwise changing the software configuration of a
board (like erasing some flash memory) you should make sure that you
have all necessary information about such data.
-----------------------------------


Followed by this one, which is a long way down from the 'loading ppcboot
using bdi2000' section:


-----------------------------------
4.9. The First Power-On
        Tip:  Note: If you bought your TQM8xxL board with PPCBoot
        already installed you can skip this section since the
        manufacturer probably has already performed these steps.
        

Connect the port labeled COM.1 (X.18) on your TQM8xxL board to the
designated serial port of your host, start the terminal program, and
connect the power supply of your TQM8xxL board. You should see messages
like this:

Connecting to /dev/ttyS1, speed 115200.
The escape character is Ctrl-\ (ASCII 28, FS)
Type the escape character followed by C to get back,
or followed by ? to see other options.
----------------------------------------------------

PPCBoot 1.1.5 (Mar 21 2002 - 19:55:04)

CPU:   XPC860xxZPnnD3 at 50 MHz: 16 kB I-Cache 8 kB D-Cache FEC present
Board: TQM860LDDBA3-P50.203
DRAM:  64 MB
FLASH:  8 MB
In:    serial
Out:   serial
Err:   serial
PCMCIA:   No Card found

Type "run flash_nfs" to mount root filesystem over NFS

Hit any key to stop autoboot:  0 
=> 

 You can interrupt the "Count-Down" by pressing any key. If you don't
you will probably see some (harmless) error messages because the system
has not been initialized yet.

 At first you have to enter the serial number and the ethernet address
of your board. Pay special attention here since these parameters are
write protected and cannot be changed once saved (usually this is done
by the manufacturer of the board). To enter the data you have to use the
PPCBoot command setenv, followed by the variable name and the data, all
separated by white space (blank and/or TAB characters). Use the variable
name serial# for the board ID and/or serial number, and ethaddr for the
ethernet address, for instance:

=> setenv serial# TQM860LDB0A3-P.200 10061684 4

=> setenv ethaddr 00:D0:93:00:05:B5

 Use the printenv command to verify that you have entered the correct
values:

=> printenv serial# ethaddr
serial#=TQM860LDDBA3-P50.203 10226122 4
ethaddr=00:D0:93:00:28:81
=> 
-----------------------------------


> > BDI>md 0x1FFC0
> > 0001ffc0 : 54514d38 36304c44 44424133 2d503530  TQM860LDDBA3-P50
> > 0001ffd0 : 2e323033 20313032 32363132 32203030  .203 10226122 00
> > 0001ffe0 : 44303933 30303238 38312034 00000000  D093002881 4....
> > 0001fff0 : 00000000 00000000 00000000 00000000  ................
> > 00020000 : ffffffff ffffffff ffffffff ffffffff  ................
> 
> So the commands you need are:
> 
> 	=> setenv serial# TQM860LDDBA3-P50.300 10226122  4
> 	=> setenv ethaddr 00:D0:93:00:28:81
> 	=> saveenv
> 
> > However, the rm der 0x200xxxxx lines produced an error.
> 
> You can ignore this error.
> 
> > What do the rm der 0x2002000f and rm der 0x2006000f lines do? 
> 
> Clearing/setting the SYSIE bit in the DER. The  fast  flash  routines
> used by the BDI2000 use system calls, so these should not be trapped.
> This  is  probably  no  longer  necessary with recent versions of the
> BDI2000 firmware.
> 
> > rm modifies a general purpose/user defined register, but there is no
> > register with the name DER or der in the tqm8xxL.cnf file; though if you
> > look the init section of  tqm8xxL.cnf:
> 
> Your BDI2000 config file probably  includes  a  register  definitions
> file "reg860.def" or so. This should contain lines like these:
> 
> 	...
> 	xer             SPR     1
> 	lr              SPR     8
> 	ctr             SPR     9
> 	dec             SPR     22
> 	pc              SPR     26                      ; is SRR0
> 	srr1            SPR     27
> 	eie             SPR     80
> 	eid             SPR     81
> 	der             SPR     149
> 	ictrl           SPR     158
> 	sprg0           SPR     272
> 	sprg1           SPR     273
> 	sprg2           SPR     274
> 	sprg3           SPR     275
> 	immr            SPR     638
> 	...
> 
> This is where the definition of DER is coming from...
> 
> > DER seems to be the debug enable register. Seems like the plan is to set
> > some sort of system interrupt enable before erasing the flash with
> > u-(ppc)boot on, after when the system is put back into debug enable.
> > However, it doesn't work on my BDI.
> 
> Missing / broken / old version of reg860.def ?

Yes, this will be the reason, I think.

> 
> > Two modules, Mac addresses:
> 
> 00:d0:93:00:7c:2b :
> 
> 	Installed Tue Feb 04 01:25:45 MET 2003
> 	Serial Number: "TQM823LDBBA3-E50.305 10526419  4"
> 	MAC Address:   "00:D0:93:00:7C:2B"
> 
> 00:d0:93:00:c0:a4 :
> 
> 	Installed Fri Jul 11 17:22:28 MEST 2003
> 	Serial Number: "TQM823LDBBA3-E50.308 10636757  4"
> 	MAC Address:   "00:D0:93:00:C0:A4"
> 
> Best regards,
> 
> Wolfgang Denk

Thanks for this info.