Re: 440BX progress.

>> Be careful
>> to set the enable bit (bit 7 in 0xe7) last.
>
> Yep. As the last step in sdram_set_registers() or as the last step
> in RAM init in general?

The last step of setting the registers e0..ef.

>> Also, you probably didn't program the MRS on the memory.
>
> Yes, I'm quite sure I messed that up.

Heh, nothing will work then 

> In general, in do_ram_command() I
> have to set DRAMC bits 7-5 to the respective command and then read32 
> () from
> some memory location for the change to "take effect", right?

Write to that location, instead.  It's not that you make
"a change take effect" -- it directly sends a command on
the memory bus, instead.

> If so, which memory location is that? Does it depend on some input  
> data?

0x1d0 in the rank, typically.  There is some tiny
documentation in the intel sheet; the idea is to send
the correct pattern on the DRAM address pins (use the
selected map to figure out what pattern that is).

[Fwd: USB Host to Host Debug Dongle/Cable]

SemiconductorStore.com has several of the the USB debug cables currently 
in stock for
$80:

http://shop.semiconductorstore.com/iwwida.pvx?;item?item_no=NET20DC%20%20%20%20%20%20%20%201?comp=SYM 

They say that PLX is still processing orders for them as well.

-Bari

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Re: LPC SuperIO "add-in card"

Carl-Daniel Hailfinger wrote:
> Tom Sylla wrote:
>> Another idea, there has been a lot of talk about homebrew LPC ROM
>> emulators. It would not be much more work to make the emulator into a
>> generic LPC analyzer. You could have it catch regular serial, or you
>> could just have print_debug spew bytes to a specified I/O location.
>> With careful design, high speed USB can keep up with the ~16MB/s you
>> could spew to LPC. This would not end up costing much more than the
>> SIO solution, the biggest cost is still the PCB/connectors (male
>> PLCC).
> 
> The male PLCC can be bought for ~12 Eur in single quantities. I
> posted a link not so long ago, if you want I can dig it out.

My mail from "2006-10-25 18:34" contained a link to the vendor,
but not to the device. Go to http://www.segor.de/ and enter
"PLCC32-Steck" (without the quotes) in the search box on the left.
Direct link to the search result:
http://cgi.segor.de/user-cgi-bin/sidestep2.pl?foto=1&Q=PLCC32-Steck&M=1

 <at> Stefan: Could you maybe order some and ship them to Tom Sylla
so he can start building such a LPC ROM emulator?

Regards,
Carl-Daniel
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Re: USB debug device

Lu, Yinghai wrote:
> Where to get USB-to-Serial or USB-to-USB device mentioned in the doc?
>
> http://www.usb.org/developers/presentations/pres0602/john_keys.pdf
>   
Here's the info on the PLX Hi-Speed USB 2.0 Debug Cable:
http://www.plxtech.com/products/NET2000/NET20DC/default.asp

Here are some other adapters I've found to debug via I2C or SPI:

I2C Bus to USB or serial adapters
http://www.mcc-us.com/catalog.htm#I2C%20Bus%20Host%20Adapters

I2C/SPI Host Adapter
http://www.totalphase.com/products/aardvark/

I2C Bus to USB or serial adapters
http://www.telos.info/products/

QBridge-I2C-USB
http://www.qprotos.com/index.html

This adapter even has Linux tools:
USB-I2C/SPI/GPIO Interface Adapter
http://www.diolan.com/i2c/u2c12.html

with a probe like this that slides into the dimm socket:
http://www.busboards.com/products/memory/ddrii/ddrii400dc/ddriidc.jpg
http://www.busboards.com/products/memory/ddrii/ddrii400dc/index.html

Re: USB debug device

"Lu, Yinghai" <yinghai.lu <at> amd.com> writes:

> Where to get USB-to-Serial or USB-to-USB device mentioned in the doc?
>
> http://www.usb.org/developers/presentations/pres0602/john_keys.pdf

It looks like Bari already answered this one but:
http://tinyurl.com/nq6kc  is the short version :)

Eric

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Re: Support for recent chipset and powerful desktop CPU

"Lu, Yinghai" <yinghai.lu <at> amd.com> writes:

> -----Original Message-----
> From: ebiederman <at> lnxi.com [mailto:ebiederman <at> lnxi.com] 
> Sent: Thursday, November 30, 2006 12:00 AM
>
>>Has anyone made in progress sorting out the EHCI USB debug port yet.
> I'm about
>>1/4 of the way from implementing kernel support.  Currently I have just
> gotten
>>as far as a user space client that can detect debug port support and
> send characters
>>across.  A low level driver you can use early I have yet to implement,
> possibly
>>in the next couple of days.  But if someone has done something I can
> compare
>>notes with that would be great.  
>
> For Linux kernel earlyprintk or printk?

I'm looking at earlyprintk.  That looks like the most interesting case.  But
once something is bootstrapped it should be relatively straight forward
to make the other cases work.

Eric

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Re: Support for recent chipset and powerful desktop CPU

-----Original Message-----
From: ebiederman <at> lnxi.com [mailto:ebiederman <at> lnxi.com] 

>I'm looking at earlyprintk.  That looks like the most interesting case.
But
>once something is bootstrapped it should be relatively straight forward
>to make the other cases work.

Me too. Simnow console is there!

With USB serial console enabled in kernel and console=ttyUSB0, only can
get boot message very late.
From usbcore: registered new interface driver ftdi_sio. Before that only
some lines in buffer.

YH

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Re: USB debug device

Bari Ari wrote:
> I2C Bus to USB or serial adapters
> http://www.mcc-us.com/catalog.htm#I2C%20Bus%20Host%20Adapters
> 
> I2C/SPI Host Adapter
> http://www.totalphase.com/products/aardvark/
> 
> I2C Bus to USB or serial adapters
> http://www.telos.info/products/
> 
> QBridge-I2C-USB
> http://www.qprotos.com/index.html
> 
> This adapter even has Linux tools:
> USB-I2C/SPI/GPIO Interface Adapter
> http://www.diolan.com/i2c/u2c12.html

Those are a lot of interesting links. They are all pretty expensive, 
though. A bargain basement option would be an AVR butterfly. The Atmel 
micros have UART/SPI/I2C built in, and the butterfly is 20USD. You could 
even probably achieve USB with this, there is software bitbang (!) USB 
available for AVR.

http://www.dwelch.com/avr/
http://www.obdev.at/products/avrusb/projects.html
http://www.harbaum.org/till/i2c_tiny_usb/

> with a probe like this that slides into the dimm socket:
> http://www.busboards.com/products/memory/ddrii/ddrii400dc/ddriidc.jpg
> http://www.busboards.com/products/memory/ddrii/ddrii400dc/index.html

More USB Host to Host Adapters

USB 2.0 Host-to-Host Cable
http://www.pccasegear.com/prod3972.htm

The USB 2.0 LINK & NETWORK CABLE
http://www.linkusb.com/

USB 2.0 Host-to-Host Cable
http://www.datapro.net/products/UL2.html

PCLinq2 (PL-2501) Hi-Speed USB Bridge Cable
http://www.usbfiletransfer.com/

-Bari

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Re: More USB Host to Host Adapters

There should not work as USB debug device. I guess.

YH

-----Original Message-----
From: linuxbios-bounces <at> linuxbios.org
[mailto:linuxbios-bounces <at> linuxbios.org] On Behalf Of Bari Ari
Sent: Thursday, November 30, 2006 5:19 PM
To: LinuxBIOS
Subject: [LinuxBIOS] More USB Host to Host Adapters

USB 2.0 Host-to-Host Cable
http://www.pccasegear.com/prod3972.htm

The USB 2.0 LINK & NETWORK CABLE
http://www.linkusb.com/

USB 2.0 Host-to-Host Cable
http://www.datapro.net/products/UL2.html

PCLinq2 (PL-2501) Hi-Speed USB Bridge Cable
http://www.usbfiletransfer.com/

-Bari

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