[U-Boot] U-boot: Beagle board as a USB Mass Storage Device Class

[U-Boot] U-boot: Beagle board as a USB Mass Storage Device Class

[yogesh b]

Hi,

I want to make the Beagle board (with u-boot) to look like a USB Mass Storage Device when it is connected to the host PC. Can anyone suggest regarding the files that I need to update in u-boot code, to make the Beagle board look like a USB Mass Storage Device.

Regards,
Yogesh



      

[U-Boot] U-boot: Beagle board as a USB Mass Storage Device Class

[Wolfgang Denk]

Dear yogesh b,

In message <458375.64426.qm@web38807.mail.mud.yahoo.com> you wrote:
>
> I want to make the Beagle board (with u-boot) to look like a USB Mass
> Storage Device when it is connected to the host PC. Can anyone
> suggest regarding the files that I need to update in u-boot code, to
> make the Beagle board look like a USB Mass Storage Device.

You don't need to and should not change anything in U-Boot. All it
takes to do what you want is a two stage boot procedure. In the first
step, boot Linux.


Keep in mind that U-Boot is a boot loader, not an operating system.
Fancy stuff should be done where the enviornment is available for it,
i. e. in an operating system.


[Note: even if you implement Device Mode support as an USB Mass
Storage Device in U-Boot that would be just the first step - you
would then most probably need write support for the file system(s)
of your choice, and ... and ...]

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Every program has at least one bug and can be shortened by  at  least
one instruction - from which, by induction, one can deduce that every
program can be reduced to one instruction which doesn't work.

[U-Boot] U-boot: Beagle board as a USB Mass Storage Device Class

[yogesh b]

Thanks for your response. I want to tell few more things about our implementation.

Actually we are planning to simulate (but not implement) the file system and implement the SCSI transparent command set decoder. When ever a file is sent to the USB mass storage device, we will be taking the content of that file to use for our application. The actual application does not require all the features of a Mass Storage Device; we just want it to look like a Mass Storage Device for transferring the data in the form of a file and for some other usage.

Because of some constraints, we have to implement all this stuff at u-boot level, instead of doing it in OS(Linux) level.

Regards,
Yogesh

--- On Tue, 6/8/10, Wolfgang Denk <wd@denx.de> wrote:

From: Wolfgang Denk <wd@denx.de>
Subject: Re: [U-Boot] U-boot: Beagle board as a USB Mass Storage Device Class
To: "yogesh b" <b_yogesh_snowy@yahoo.com>
Cc: u-boot at lists.denx.de
Date: Tuesday, June 8, 2010, 12:51 PM

Dear yogesh b,

In message <458375.64426.qm@web38807.mail.mud.yahoo.com> you wrote:
>
> I want to make the Beagle board (with u-boot) to look like a USB Mass
> Storage Device when it is connected to the host PC. Can anyone
> suggest regarding the files that I need to update in u-boot code, to
> make the Beagle board look like a USB Mass Storage Device.

You don't need to and should not change anything in U-Boot. All it
takes to do what you want is a two stage boot procedure. In the first
step, boot Linux.


Keep in mind that U-Boot is a boot loader, not an operating system.
Fancy stuff should be done where the enviornment is available for it,
i. e. in an operating system.


[Note: even if you implement Device Mode support as an USB Mass
Storage Device in U-Boot that would be just the first step - you
would then most probably need write support for the file system(s)
of your choice, and ... and ...]

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,? ???MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Every program has at least one bug and can be shortened by? at? least
one instruction - from which, by induction, one can deduce that every
program can be reduced to one instruction which doesn't work.



      

[U-Boot] U-boot: Beagle board as a USB Mass Storage Device Class

[Wolfgang Denk]

Dear yogesh b,

please stop top-posting / full-quoting; please read
http://www.netmeister.org/news/learn2quote.html

In message <437292.45437.qm@web38804.mail.mud.yahoo.com> you wrote:
>
> Actually we are planning to simulate (but not implement) the file system an
> d implement the SCSI transparent command set decoder. When ever a file is s
> ent to the USB mass storage device, we will be taking the content of that f
> ile to use for our application. The actual application does not require all
>  the features of a Mass Storage Device; we just want it to look like a Mass
>  Storage Device for transferring the data in the form of a file and for som
> e other usage.

... and plkease use a shorter line length - som 70 characters or so.

> Because of some constraints, we have to implement all this stuff at u-boot
> level, instead of doing it in OS(Linux) level.

Would you mind to explain what these constraints are?  From what you
explained so far I seriously doubt if U-Boot is the right environment
for such work. You want an OS (even if you don't know it yet).

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Thought for the day: What if there were no hypothetical situations?

[U-Boot] U-boot: Beagle board as a USB Mass Storage Device Class

[Gupta, Ajay Kumar]

Hi
> Thanks for your response. I want to tell few more things about our
> implementation.
> 
> Actually we are planning to simulate (but not implement) the file system
> and implement the SCSI transparent command set decoder. When ever a file
> is sent to the USB mass storage device, we will be taking the content of
> that file to use for our application. The actual application does not
> require all the features of a Mass Storage Device; we just want it to look
> like a Mass Storage Device for transferring the data in the form of a file
> and for some other usage.

You can also use USB DFU for this where you can transfer files to RAM or
NAND partitions. DFU is not yet supported in Denx's uboot tree but is
Available in openmoko's tree
[http://git.openmoko.org/?p=u-boot.git;a=summary].
You will have to port back DFU feature from openmoko to Denx's tree.

-Ajay
> 
> Because of some constraints, we have to implement all this stuff at u-boot
> level, instead of doing it in OS(Linux) level.
> 
> Regards,
> Yogesh
> 
> --- On Tue, 6/8/10, Wolfgang Denk <wd@denx.de> wrote:
> 
> From: Wolfgang Denk <wd@denx.de>
> Subject: Re: [U-Boot] U-boot: Beagle board as a USB Mass Storage Device
> Class
> To: "yogesh b" <b_yogesh_snowy@yahoo.com>
> Cc: u-boot at lists.denx.de
> Date: Tuesday, June 8, 2010, 12:51 PM
> 
> Dear yogesh b,
> 
> In message <458375.64426.qm@web38807.mail.mud.yahoo.com> you wrote:
> >
> > I want to make the Beagle board (with u-boot) to look like a USB Mass
> > Storage Device when it is connected to the host PC. Can anyone
> > suggest regarding the files that I need to update in u-boot code, to
> > make the Beagle board look like a USB Mass Storage Device.
> 
> You don't need to and should not change anything in U-Boot. All it
> takes to do what you want is a two stage boot procedure. In the first
> step, boot Linux.
> 
> 
> Keep in mind that U-Boot is a boot loader, not an operating system.
> Fancy stuff should be done where the enviornment is available for it,
> i. e. in an operating system.
> 
> 
> [Note: even if you implement Device Mode support as an USB Mass
> Storage Device in U-Boot that would be just the first step - you
> would then most probably need write support for the file system(s)
> of your choice, and ... and ...]
> 
> Best regards,
> 
> Wolfgang Denk
> 
> --
> DENX Software Engineering GmbH,? ???MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
> Every program has at least one bug and can be shortened by? at? least
> one instruction - from which, by induction, one can deduce that every
> program can be reduced to one instruction which doesn't work.
> 
> 
> 
> 

[U-Boot] U-boot: Beagle board as a USB Mass Storage Device Class

[Detlev Zundel]

Hi,

> Hi
>> Thanks for your response. I want to tell few more things about our
>> implementation.
>> 
>> Actually we are planning to simulate (but not implement) the file system
>> and implement the SCSI transparent command set decoder. When ever a file
>> is sent to the USB mass storage device, we will be taking the content of
>> that file to use for our application. The actual application does not
>> require all the features of a Mass Storage Device; we just want it to look
>> like a Mass Storage Device for transferring the data in the form of a file
>> and for some other usage.
>
> You can also use USB DFU for this where you can transfer files to RAM or
> NAND partitions. DFU is not yet supported in Denx's uboot tree but is
> Available in openmoko's tree
> [http://git.openmoko.org/?p=u-boot.git;a=summary].
> You will have to port back DFU feature from openmoko to Denx's tree.

Thanks for the hint Ajay.  Let me add that DFU is also a "standard"
protocol: http://www.usb.org/developers/devclass_docs/DFU_1.1.pdf

So many people will be able to enjoy this in addition to solving this
very specific problem of Yogesh.

Cheers
  Detlev

-- 
It's very important  that you sleep because that's  when your brain is
garbage  collecting.  And a  dream is  if you  are interrupted  in the
middle and have junk left in the registers.
                                          -- Gerald Sussman
--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de

[U-Boot] U-boot: Beagle board as a USB Mass Storage Device Class

[Gupta, Ajay Kumar]

Hi,

> >> Thanks for your response. I want to tell few more things about our
> >> implementation.
> >>
> >> Actually we are planning to simulate (but not implement) the file
> system
> >> and implement the SCSI transparent command set decoder. When ever a
> file
> > You can also use USB DFU for this where you can transfer files to RAM or
> > NAND partitions. DFU is not yet supported in Denx's uboot tree but is
> > Available in openmoko's tree
> > [http://git.openmoko.org/?p=u-boot.git;a=summary].
> > You will have to port back DFU feature from openmoko to Denx's tree.
> 
> Thanks for the hint Ajay.  Let me add that DFU is also a "standard"
> protocol: http://www.usb.org/developers/devclass_docs/DFU_1.1.pdf
> 
> So many people will be able to enjoy this in addition to solving this
> very specific problem of Yogesh.

Detlev,

Actually I have ported DFU from openmoko to Denx tree and used it on
OMAP3EVM. I hope it should work just fine on Beagle as well.

Will it be ok if I submit those patches to Denx's tree? Is there anyone
Already working on this?

I have seen below page with the same proposal from Mike.
http://elinux.org/CELF_Project_Proposal/Add_DFU_support_to_U-Boot

Mike, Are you working on this?

Regards,
Ajay
> 
> Cheers
>   Detlev
> 
> --
> It's very important  that you sleep because that's  when your brain is
> garbage  collecting.  And a  dream is  if you  are interrupted  in the
> middle and have junk left in the registers.
>                                           -- Gerald Sussman
> --
> DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de

[U-Boot] U-boot: Beagle board as a USB Mass Storage Device Class

[Kyungmin Park]

Hi,

On Fri, Jun 11, 2010 at 10:13 PM, Gupta, Ajay Kumar <ajay.gupta@ti.com> wrote:
> Hi,
>
>> >> Thanks for your response. I want to tell few more things about our
>> >> implementation.
>> >>
>> >> Actually we are planning to simulate (but not implement) the file
>> system
>> >> and implement the SCSI transparent command set decoder. When ever a
>> file
>> > You can also use USB DFU for this where you can transfer files to RAM or
>> > NAND partitions. DFU is not yet supported in Denx's uboot tree but is
>> > Available in openmoko's tree
>> > [http://git.openmoko.org/?p=u-boot.git;a=summary].
>> > You will have to port back DFU feature from openmoko to Denx's tree.
>>
>> Thanks for the hint Ajay. ?Let me add that DFU is also a "standard"
>> protocol: http://www.usb.org/developers/devclass_docs/DFU_1.1.pdf
>>
>> So many people will be able to enjoy this in addition to solving this
>> very specific problem of Yogesh.
>
> Detlev,
>
> Actually I have ported DFU from openmoko to Denx tree and used it on
> OMAP3EVM. I hope it should work just fine on Beagle as well.
>
> Will it be ok if I submit those patches to Denx's tree? Is there anyone
> Already working on this?

Good news, can you post it? we just start to implement it s5pc110. we
hope to use it.

Thank you,
Kyungmin Park
>
> I have seen below page with the same proposal from Mike.
> http://elinux.org/CELF_Project_Proposal/Add_DFU_support_to_U-Boot
>
> Mike, Are you working on this?
>
> Regards,
> Ajay
>>
>> Cheers
>> ? Detlev
>>
>> --
>> It's very important ?that you sleep because that's ?when your brain is
>> garbage ?collecting. ?And a ?dream is ?if you ?are interrupted ?in the
>> middle and have junk left in the registers.
>> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? -- Gerald Sussman
>> --
>> DENX Software Engineering GmbH, ? ? ?MD: Wolfgang Denk & Detlev Zundel
>> HRB 165235 Munich, ?Office: Kirchenstr.5, D-82194 Groebenzell, Germany
>> Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
>

[U-Boot] U-boot: Beagle board as a USB Mass Storage Device Class

[Detlev Zundel]

Hi Ajay,

> Actually I have ported DFU from openmoko to Denx tree and used it on
> OMAP3EVM. I hope it should work just fine on Beagle as well.

Excellent, congratulations!

> Will it be ok if I submit those patches to Denx's tree? 

Simply post the changes on the mailing list and if the patches pass the
regular review process, they will surely be integrated into mainline for
everybodys benefit.

Cheers
  Detlev

-- 
The proprietary-Unix players proved so ponderous, so blind, and so inept at
marketing that Microsoft was able to grab away a large part of their market
with the shockingly inferior technology of its Windows operating system.
                   -- "A Brief History of Hackerdom" by Eric Steven Raymond
--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de

[U-Boot] U-boot: Beagle board as a USB Mass Storage Device Class

[Gupta, Ajay Kumar]

> I want to make the Beagle board (with u-boot) to look like a USB Mass
> Storage Device when it is connected to the host PC. 

> Can anyone suggest
> regarding the files that I need to update in u-boot code, to make the
> Beagle board look like a USB Mass Storage Device.
This would require to add support for MSC gadget at drivers/usb/gadget/.

You can refer kernel MSC gadget implementation at
driver/usb/gadget/g_file_storage.c for this.

-Ajay
> 
> Regards,
> Yogesh
> 
> 
> 
>