[U-Boot] OpenRD Ultimate SATA & SD

[Alexei Ozhigov]

2011/6/17 Prafulla Wadaskar <prafulla at marvell.com>:
>
>
>> -----Original Message-----
>> From: Philip Hands [mailto:phil at hands.com]
>> Sent: Friday, June 17, 2011 1:33 AM
>> To: Alexei Ozhigov
>> Cc: Prafulla Wadaskar; u-boot at lists.denx.de; Prabhanjan Sarnaik; Ashish
>> Karkare
>> Subject: Re: [U-Boot] OpenRD Ultimate SATA & SD
>>
>> On Thu, 16 Jun 2011 16:18:46 +0400, Alexei Ozhigov
>> <alexei.ozhigov at gmail.com> wrote:
>> ...
>> >
>> > I am experiencing the same problem with SATA right now with
>> > v2011.06-rc2 (tried also the latest master). If MVSATA_STATUS_TIMEOUT
>> > in mvsata_ide_initialize_port is ignored, SATA drive is found on the
>> > second port and I am able to read the drive's content.
>>
>> Inspired by what you say about timeouts, I thought perhaps increasing
>> the timeout from 10ms to 1s might make a difference -- that worked!
>>
>> ... except that now, it's working regardless :-(
>>
>> So, I've no idea if that's really related to what's going on, because
>> I've now gone as far as reducing the timeout to 5ms and it's _still_
>> working fine, so perhaps some part of the SATA subsystem was in a state
>> that was somehow reset by waiting a bit longer for the startup once, and
>> that's somehow "fixed" it.
>>
>> It is still working despite powering down the machine for a while, so
>> I'm guessing whatever changed is something to do with the state of the
>> hard drive.
>>
>> Sadly that means that I've now lost the ability to test this, since
>> trying any of the versions that were previously failing now work.
>>
>> Anyway, Alexei, try increasing the timeout (i.e. the value being
>> assigned to timeleft) --- if that works for you too, it seems pretty
>> harmless, so might be appropriate for wider adoption.

I have already tried longer timeouts for timeleft and it does not help.

Also with timeout circumvention the SATA flash card I was hoping to
boot from (Transcend TS1GSDOM22V) is identified as follows:

Bus 0: OK Bus 1: OK
  Device 0: Model: TRANSCEND  Firm: 20080128 Ser#: 20080407    00000005
            Type: Hard Disk
            Capacity: 955.8 MB = 0.9 GB (1957536 x 512)
IDE read: device 0 not ready
IDE read: device 0 not ready
  Device 1: Model:  Firm:  Ser#:
            Type: Hard Disk
            Capacity: not available

And then the card cannot be read. First attempt shows "OK" although
the data written to memory are wrong, next attempts result in "device
0 not ready". On the other hand, Linux (Debian ARM port) does not
recognize the card either. So if this problem is not related to
improper initialization, the question is how SATA flash differs from
regular SATA drives with respect to SATA controller in 88F6281 and if
it is actually possible to work with SATA flash on OpenRD.