[U-Boot-Users] Board HW ID

[Wolfgang Denk]

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.

> 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 ?

> 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

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
The only thing necessary for the triumph of evil is for good  men  to
do nothing.                                            - Edmund Burke