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Subject: Re: [grub-devel] loongson-2f mini-pc (fuloong) elf image generation.
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On 13.07.2013 20:10, Aleš Nesrsta wrote:
> Hi Vladimir,
>
> thanks for the info.
>
> I wanted to try some experiments with this new version, but,
> unfortunately, something is probably bad in trunk - there is no
> accessible any disk device after "insmod <driver>" ("ls" does not list
> any device, only empty line).
>
> <driver> can be (maybe) anything, I tried ehci, uhci, ohci and (non USB
> driver) ahci.
> I.e., problem is not related to USB drivers only.
> For the first look it sounds like there is maybe something wrong with
> insmod command itself.
> (I built GRUB from latest trunk on 64-bit Arch Linux.)
>
You have to use nativedisk command which reloads disk drivers all at 
once as BIOS disk services are disables when *hci or pata is loaded.
> BR,
> Ales
>
> Dne 13.7.2013 10:13, Vladimir 'φ-coder/phcoder' Serbinenko napsal(a):
>> On 12.07.2013 18:25, Aleš Nesrsta wrote:
>>> Hi Vladimir,
>>>
>>> - what was the reason of the OHCI problem on Loongson?
>>> (I don't see any details of solution below nor the patch... ?)
>>>
>> It was bad handling of root ports. My standard system has only EHCI+RMH
>> so root port isn't accessible and is never hotplugged. This was
>> introduced by USB init speed-up series
>>> BR,
>>> Ales
>>>
>>> Dne 12.7.2013 16:02, Vladimir 'φ-coder/phcoder' Serbinenko napsal(a):
>>>> I fixed the usb keyboard bug on fuloong. Looks like some "antivirus"
>>>> software blocked my message with GRUB binary. Also thers is grub.elf
>>>> (from 2.00~rc1) in downloads section.
>>>> On 03.11.2012 22:34, Javier Vasquez wrote:
>>>>> On Tue, Oct 30, 2012 at 2:14 PM, Aleš Nesrsta <starous@volny.cz
>>>>> <mailto:starous@volny.cz>> wrote:
>>>>>
>>>>>     Javier Vasquez píše v Po 29. 10. 2012 v 17:03 -0600:
>>>>>      > > According to USB keyboard: Maybe it sounds funny, but try
>>>>> this,
>>>>>     please:
>>>>>      > > Unplug and plug again keyboard when GRUB is loaded.
>>>>>      > > Does it help?
>>>>>      > >
>>>>>      > > BR
>>>>>      > > Ales
>>>>>      >
>>>>>      >
>>>>>      > Thanks, I tried, and it didn't work, :-(
>>>>>      >
>>>>>      > BTW, forgot to menion that I also tried adding usb and
>>>>>     usb_keyboard as
>>>>>      > GRUB_PRELOAD_MODULES (grub.cfg has the corresponding insmod
>>>>>     statements
>>>>>      > at the beginning), and that didn't work.  That's the current
>>>>> setup
>>>>>      > actually...
>>>>>      >
>>>>>      > Thanks,
>>>>>      >
>>>>>     OK, so it will be some another case.
>>>>>
>>>>>     There will be helpful additional information - does work USB at
>>>>> all?
>>>>>     I.e. when You connect e.g. USB flasdisk, is it working, can You
>>>>> use it
>>>>>     in GRUB?
>>>>>     (Sorry if it is not possible to try such situation, I never seen
>>>>>     loongson (fuloong) mini-pc...)
>>>>>
>>>>>
>>>>> No, it does not work.  pmon handles it correctly, but grub provides
>>>>> the
>>>>> error disk not found, :-(
>>>>>
>>>>>
>>>>>     Another thing - You mentioned You used OHCI GRUB driver. As I
>>>>> see on
>>>>>
>>>>> http://www.lemote.com/en/products/mini-computer/2010/0310/111.html ,
>>>>>     there is mentioned USB 2.0, i.e. it should be probably EHCI
>>>>> controller
>>>>>     - ?
>>>>>
>>>>>
>>>>> I also generated image including the ehci module, and it didn't make a
>>>>> change...
>>>>>
>>>>>     (OHCI is USB 1.1 controller - but it could be used together with
>>>>> USB 2.0
>>>>>     EHCI as so called companion controller).
>>>>>     Is it possible that Your Mini-PC has USB 2.0 only (i.e. EHCI)
>>>>> controller
>>>>>     (without companion controller)?
>>>>>     Are somewhere available more detailed information about Your
>>>>> loongson-2f
>>>>>     Mini-PC HW?
>>>>>
>>>>>
>>>>> I'm attaching more information about the mini-pc...  Notice dmesg
>>>>> indicates linux used ohci for this device without problems:
>>>>>
>>>>> % uname -a
>>>>> Linux mini-1 3.2.0-4-loongson-2f #1 Debian 3.2.32-1 mips64 GNU/Linux
>>>>>
>>>>> % dmesg
>>>>> ...
>>>>> [    6.820000] usb 2-2: new low-speed USB device number 3 using
>>>>> ohci_hcd
>>>>> [    7.048000] usb 2-2: New USB device found, idVendor=04d9,
>>>>> idProduct=1702
>>>>> [    7.052000] usb 2-2: New USB device strings: Mfr=1, Product=2,
>>>>> SerialNumber=0
>>>>> [    7.056000] usb 2-2: Product: USB Keyboard
>>>>> [    7.060000] usb 2-2: Manufacturer:
>>>>> [    7.100000] input:   USB Keyboard as
>>>>> /devices/pci0000:00/0000:00:0e.4/usb2/2-2/2-2:1.0/input/input1
>>>>> [    7.116000] generic-usb 0003:04D9:1702.0002: input,hidraw1: USB HID
>>>>> v1.10 Keyboard [  USB Keyboard] on usb-0000:00:0e.4-2/input0
>>>>> [    7.144000] input:   USB Keyboard as
>>>>> /devices/pci0000:00/0000:00:0e.4/usb2/2-2/2-2:1.1/input/input2
>>>>> [    7.152000] generic-usb 0003:04D9:1702.0003: input,hidraw2: USB HID
>>>>> v1.10 Device [  USB Keyboard] on usb-0000:00:0e.4-2/input1
>>>>> ...
>>>>>
>>>>> I'm attaching several logs and info, including dmsg output...
>>>>>
>>>>>
>>>>>     BR,
>>>>>     Ales
>>>>>
>>>>>
>>>>> Thanks,
>>>>>
>>>>> --
>>>>> Javier.
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Grub-devel mailing list
>>>>> Grub-devel@gnu.org
>>>>> https://lists.gnu.org/mailman/listinfo/grub-devel
>>>>>
>>>>
>>>>
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