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merkin

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Reply with quote  #46 
@techjunkie02
my response you quoted was intended for @wejones.

i think i see the issue..can you try again using this kernel?
http://www.satforum.me/index.php?PHPSESSID=loo28q1edid0ihpa188avmoqb2&action=downloads;sa=downfile&id=118




techjunkie02

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Reply with quote  #47 
Quote:
Originally Posted by merkin
@techjunkie02
my response you quoted was intended for @wejones.

i think i see the issue..can you try again using this kernel?
http://www.satforum.me/index.php?PHPSESSID=loo28q1edid0ihpa188avmoqb2&action=downloads;sa=downfile&id=118






Yes, I will, and thanks again!  Sorry, I misunderstood who the response was for, but appreciate the help!


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techjunkie02

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Reply with quote  #48 
Well I just followed the instructions with the file that Merkin gave me.....



That run was a success!!!   BUT,

I'm now sitting looking at the AZ that is in "rescue mode" and is displaying the IP address.

There is no display on the TV

What do I do from here?

Thanks,


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merkin

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Reply with quote  #49 
Upload another putty log of the entire boot process.
Try inserting a usb drive to see if the ports are active.
techjunkie02

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Reply with quote  #50 
This time it finished successfully. And rebooted into rescue mode displaying the IP addr.  I'll get the log....txt 0226puttylog.txt     

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techjunkie02

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Reply with quote  #51 
Quote:
Originally Posted by merkin
Upload another putty log of the entire boot process. Try inserting a usb drive to see if the ports are active.


YES, the ports are active.

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wejones

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Reply with quote  #52 
merkin....
   I just read through an old thread http://www.usbjtag.com/vbforum/showthread.php?t=7046
where you and a few other people were discussing what you describe below re the Elite. Probably 90% of what I read was well over my head, but a couple things occurred to me. 
   In the thread, the possibility of firmware or memory maps being different on the Elite was discounted because the Elite and Premier use the same firmware. However, in the first post, the poster said that sometimes his Elite would ID as a Premier, and respond differently, but still not work right.
   I was wondering re if it is possible that the firmware might first check to see if the box is an Elite or Premier, and then disable that TDI pin if it see's it's an Elite?  If that is possible, then it occurred to me that since it has been shown that you can effectively turn an Elite into a Premier by replacing the DOM with a hard drive with blank partitions, that maybe if you did this, ie remove the DOM and put an empty hard drive in it's place, that the Elite would start to come up thinking it was a Premier, possibly not disabling the TDI pin, and then your JTAG attempts might work???  I assume that it's unlikely that it's that easy, but I thought I would ask.
Just curious.  I'm not likely to ever need to try any of this stuff on my Elite since it's been working fine for me, but I trying to understand how all this stuff works when possible.

EDIT: every place I said Premier, I meant Premium. Sorry.



Quote:
Originally Posted by merkin
the ejtag port is populated on the Elite's pcb, but for some reason it seems the TDI pin on the CPU is disabled..no matter what tap command i send to the debug port, the only response i get is the CPUID..which makes sense because the CPUID is loaded to the register automatically on tap reset, so really just toggling CLK will get you the CPUID, but nothing else.

as far as the other models i cannot speak from experience, but there many reports that jtag access does work.  my personal theory is that the version of XOS running on the SMP8634 in the Elite model has the debug port disabled.  this is not uncommon practice for these "secure" SOCs.  for this particular CPU though, its not so secure as it should be secure https://sourceforge.net/projects/mramc/

i have tried reading the flash from other settops (cable/directv) with similar results.  the developers/engineers purposely lock down the devices.

these SMP8634's are in many devices (think NMT/Popcorn hour)

YAMON is a rom monitor..honestly google can tell you more than i can.

i am not sure where the boot is located on the filesystem, but the tsop flash holds the bootloader and the flash starts at virtual address 0xAC000000

just be careful while you investigate.  if you muck up the bootloader on the Elite, the only way to revive it is to remove the tsop flash and program it externally, then resolder.  i had to do this once and do not want to ever do it again.  if you have smd rework tools, than its not so bad, but i had to do everything by hand with a soldering iron.
techjunkie02

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Reply with quote  #53 
It worked !!


I now have official 0.9.5309 Azbox firmware

and it looks good[smile]

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Hockeynut

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Reply with quote  #54 
Quote:
Originally Posted by techjunkie02
It worked !!


I now have official 0.9.5309 Azbox firmware

and it looks good[smile]


Awesome!!...Great news!...What a journey..[biggrin]..Congrats techjunkie..[smile]..You need a current up to date sat list for the ol classic AZ lemme know...I have it covered from Eutelsat 8W to AMC 8  139W.

Shout out to merkin.[thumb].

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Leatherneck

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Reply with quote  #55 
techjunkie02,
Glad  to hear you are back up!  It appears that you just performed open heart surgery on the Azbox! ! !  [smile]



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merkin

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Reply with quote  #56 
@techjunkie02
nice job!

@wejones
the reason his elite was ID'ing as a premium is because he was using a config file that defined premium in the targets name..you can call it whatever you want in the xml file.

you take control of the cpu with jtag before the contents of the flash are loaded.  this is why jtag is needed to program a blank flash, so nothing in the firmware is disabling the TDI pin.  more likely the fuse is blown..or jtag is not enabled in the xos (ucode) on the batch of smp8634's used in the elite model during production..or the TDI cpu trace is cut on the pcb.  it seems these boot problems are the result of upgrading to a newer kernel and then trying to revert to the original firmware.
Leatherneck

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Reply with quote  #57 
This has been very educational!  My research for some time about upgrading to anything other than the original firmware has caused me to pause, and give it considerable consideration?  I have used the official 9.5309 Azbox firmware for some time.  It is very stable! 
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wejones

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Reply with quote  #58 
I agree.... this has been very educational for me as well.  I've spent the last couple of days reading dozens and dozens of web pages on the topic, finding out that I've been completely off base re my understanding about how the Azbox worked, compared to how other linux based devices that I've used work. 

Re being hesitant to install non-official firmware, I agree with that as well, at least as far as firmware like this E2 or whatever it's called, that changes the flash and kernel to the extent that it is an adventure to get back to the original or official firmware.  I've never attempted to switch to any of those firmwares.  I have, however installed one of the 0.9.5400 firmware, which I got from a Canadian web page that I had previously downloaded official firmware from.  Apparently these 5400 series of firmware weren't created by the same team as the official firmware.  I didn't realize that at the time, but it probably wouldn't have changed my mind about trying it, as by that time the official team seemed to have ceased to exist, and these firmwares were apparently minor changes to correct minor problems in the official firmware, which didn't change the ability of getting back to an older version it had bugs. The 5400 firmware has been quite stable for me for years, with only a few minor quirks, that were probably in the older firmware as well.  Seems like there were a couple other firmwares in the 5400 series that I didn't go to, mainly because I was happy with the 5400, and also I think I remember reading some posts from people that had problems with them.
    Anyway, I don't have a problem with experimenting with altered firmware, but I like to be certain that I can get back to the stock firmware before I experiment.
  
ka6tya

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Reply with quote  #59 
Quote:
Originally Posted by techjunkie02


Thanks Emil.... I found the whole package on another forum. Instructions in 3 languages, Files; Filezilla, Putty, and Pumpkin, then azfiles; vmlinux.bin, update, and backup-kernel.... wish I had found this in the beginning instead of after I had been working on it for several hours..LOL!!



Where can the package be found, on which forum?
Leatherneck

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Reply with quote  #60 
As stated earlier this has been very educational.  Allow me to digress briefly.  The benefit I took away from this is the fact that as a member of this is simply that the real comforting benefit is the members jumped right in to assist. All of the members are to be commended for their assistance; together, with the fact Rick has a beautiful website.

Thanks!

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