From: Jeff Mock <jeff@mock.com>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] AMCC 440SP PCIX Register access with BDI2000?
Date: Sun, 01 Oct 2006 08:19:53 -0700 [thread overview]
Message-ID: <451FDC99.8040203@mock.com> (raw)
In-Reply-To: <20061001150935.41651.qmail@web33412.mail.mud.yahoo.com>
I can only give you half an answer. The BDI2000 config file lets you
setup TLB entries. For my 440GX board I have the following in the
[INIT] section of the config file:
WTLB 0xe0000095 0x1400001B
This maps the 32-bit virtual address 0xe0000000 to the 36-bit physical
address 0x140000000. A similar incantation should map the PCIX
registers into the 32-bit address space, but I don't remember the format
of the fields in the command...
jeff
Jeff Stevens wrote:
> Is there any way to access the PCIX Registers using
> the BDI2000? I accidentally set the CPU wait bit for
> PCIX1, and now it won't boot. If I could access the
> PCIX registers (located and 0x91EC80044) I could clear
> the wait bit, and start U-Boot. However, it looks
> like the BDI2000 can only access 32-bit addresses, so
> when I have it dump 0x91ec80044 it dumps 0x1ec80044
> instead. Is there an indirect access register set?
>
> Thanks,
> Jeff Stevens
>
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prev parent reply other threads:[~2006-10-01 15:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-01 15:09 [U-Boot-Users] AMCC 440SP PCIX Register access with BDI2000? Jeff Stevens
2006-10-01 15:19 ` Jeff Mock [this message]
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