linuxppc-dev.lists.ozlabs.org archive mirror
 help / color / mirror / Atom feed
* Question on PowerPC's JTAG instruction
@ 2008-05-30  1:14 John Zhou
  2008-06-12 14:05 ` Laurent Pinchart
  0 siblings, 1 reply; 2+ messages in thread
From: John Zhou @ 2008-05-30  1:14 UTC (permalink / raw)
  To: linuxppc-embedded

[-- Attachment #1: Type: text/plain, Size: 766 bytes --]

Hi,

We want to design a tool to speed up our hardware diagnostics via JTAG
port.

So we have question to ask for your help:

1. How do we access PowerPC's internal GPRs and SPRs etc. via JTAG
instruction?

We'v gone through IEEE.1149.1.   There are no standard JTAG instruction to
access CPU's data bus, including internal or external data bus. Do we must
need private JTAG instruction to access CPU's internal resource? if it is,
could you share the documents with us?

2. For 'BSDL' usage, you know, we have many components on one board and much
more signals are processed specically. So, how to integrate PowerPC's BSDL
with other components' 'BSDL'?  Could you give us any hints on it? or any
document is also welcome!

Your any help is appreciated!

John Zhou

[-- Attachment #2: Type: text/html, Size: 2764 bytes --]

^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2008-06-12 14:05 UTC | newest]

Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2008-05-30  1:14 Question on PowerPC's JTAG instruction John Zhou
2008-06-12 14:05 ` Laurent Pinchart

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).