Re: Grub2 can not detect usb disk

From: Rock Cui <rockcui@viatech.com.cn>
To: The development of GNU GRUB <grub-devel@gnu.org>
Subject: Re: Grub2 can not detect usb disk
Date: Wed, 27 Jul 2011 17:28:40 +0800	[thread overview]
Message-ID: <4E2FDA48.1020508@viatech.com.cn> (raw)
In-Reply-To: <4E2FD10D.1020809@gmail.com>

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I think you may be a bit promiscuous, this thread is not about or base 
on a loongson platform.
> On 27.07.2011 10:11, Rock Cui wrote:
>> The usb keyboard can not work. I have added the usb_keyboard.mod into
>> the image.
> In this case I'm sure that usb_keyboard works on both yeeloong and
> fuloong. I suspect the difference between David and me is that he uses
> pmon and I don't and when loaded from another bootloader rather than
> directly from flash GRUB skips some init routines which shouldn't be
> necessary in that case, including some CS5536 init. I just have not
> enough battery right now to make a test image.
>> I think if no ehci support, the usb device will run with full-speed or
>> low-speed, because of uhci/ohci support.
>>
> Keyboard is always in low-speed mode.
>>> On 12.07.2011 13:11, Cui Lei wrote:
>>>> Hi Vladimir, I have not received you reply for some days. I think you must be very busy, so I did some works on my own way.
>>>> I tested dozens of versions between r2249 and r3229. I found that most of them can boot my machine with "--with-platform=multiboot" option rather than "--with-platform=coreboot" option. The latest one I used is r3200, I think it should
>>>> support usb device nicely. I added usb.mod uhci.mod usbms.mod usbtest.mod into the image(payload.elf), but it can not detect
>>>> my usb disk stilly. But if I plug a usb stick into my board after booting into the grub shell( grub>  ), I get these message:
>>>>
>>>> /*********************************************************************************/
>>>> 	grub>  bus/usb/usbhub.c:208: total=250
>>>>
>>>> 	bus/usb/usbtrans.c:93: control: reqtype=0x80 req=0x06 val=0x100 idx=0x00
>>>>
>>>> 	size=8
>>>>
>>>> 	bus/usb/usbtrans.c:120: control: transfer = 0x7fe4cec0, dev = 0x7fe36ea0
>>>>
>>>> 	bus/usb/usbtrans.c:187: control: err=7
>>> It looks like GRUB has seen the device but no real data was transfered.
>>> Could you try with low-speed device? E.g. keyboard. I think you may need
>>> ehci driver (Ales( recently coded one)
>>>> /*******************************************************************************************************/
>>>>
>>>> I looked at the source code and found err7 is time out error, I don't
>>>> know how to fix it.
>>>> I need your help and anyone's advices. It is long time I have spended
>>>> on this project. So look forward to your replay.
>>>> Thank you in advance.
>>>>
>>>> BRs,
>>>>
>>>> Rock.
>>>>
>>>>
>>>>
>>>>> I have read the source code about the mmap of grub and of corebootV4,
>>>>> I found that the size of their table header struct are not same, and
>>>>> I think ,in the file "mmap.c" of grub2,on the 53rd line, the offset
>>>>> of the first table item may be error.
>>>>>
>>>>> BRs,
>>>>> Rock.
>>>>>
>>>>> At 2011-07-05 14:35:28,"Cui Lei"<neverforget_2002@163.com>  wrote:
>>>>>
>>>>>      I think the "skip=2146422784" is too big.
>>>>>>        I received you reply this monday, then my office PC had a
>>>>>>      problem ,can not power on, so I write you late.
>>>>>>      I have tried to run "dd", but got "Reading a error address".
>>>>>>>      On 01.07.2011 08:57, Rock Cui wrote:
>>>>>>>>      Sorry,I am careless, my log file is not empty, please refer to the
>>>>>>>>      attachment.
>>>>>>>>
>>>>>>>      I would also need another memory location for full diagnostics:
>>>>>>>      sudo dd if=/dev/mem of=tables bs=1 count=65536 skip=2146422784
>>>>>>>      Looking at the code, the only way it can hang AFAICT should be fixed by
>>>>>>>      attached patch (mostly guessing)
>>>>>>>>>      1. I have tried the "--with-platform=multiboot" option, but when
>>>>>>>>>      booting it show me:
>>>>>>>>>      /*********************/
>>>>>>>>>      Welcome to GRUB!
>>>>>>>>>      out of memory
>>>>>>>>>      Aborted.
>>>>>>>>>      /*********************/
>>>>>>>>>      2. The /dev/mem you need , how can I get it? I want it should be from
>>>>>>>>>      the "/" , then I must enter the ubuntu.
>>>>>>>>>      So I use the grub1.98 as coreboot payload and boot my ubuntu11.04.
>>>>>>>>>      But when I copy the /dev/mem to a log file with "sudo",
>>>>>>>>>      I was told "You can not do it!" : (
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>      On 30.06.2011 04:38, Cui Lei wrote:
>>>>>>>>>>>      I have found the the last version which can boot my machine, it is
>>>>>>>>>>>      the r2348. The r2349 can not boot it.
>>>>>>>>>>>      So I checked out the changelog from 2348 to 2349 :
>>>>>>>>>>>
>>>>>>>>>>      Ironically I did it because i386-coreboot didn't work in my tests.
>>>>>>>>>>      Could
>>>>>>>>>>      you send me the first 128K of /dev/mem ? Meanwhile you can try
>>>>>>>>>>      i386-multiboot port.
>>>>>>>>>>
>>>>>>>>>>      _______________________________________________
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>>>>>>>>>>      Grub-devel@gnu.org
>>>>>>>>>>      https://lists.gnu.org/mailman/listinfo/grub-devel
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>>>>>>>>>      https://lists.gnu.org/mailman/listinfo/grub-devel
>>>>>>>>>
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