[U-Boot-Users] bootcmd

[U-Boot-Users] bootcmd

[Matt Gessner]

Hi, 

I'm trying to figure out how to make my software field update process
robust.  Currently, my bootcmd is 'fsload 20000000 uImage; bootm
20000000'

Is there anyway for u-boot to determine, in one of these commands, that
some command failed, and to do something else instead?

For example, if I failed to load uImage, could I check for its
existence, and boot that instead?  

My update process will copy the new image into the same partition as
uImage, as uImage.new, and then rename uImage to uImage.old, rename
uImage.new to uImage, and then delete uImage.old.

If something untoward should happen (like the idiot turns off the power
in the middle of the update), I'm wondering how I can have u-boot get
around this.

Thanks,

Matt 

[U-Boot-Users] bootcmd

[Timur Tabi]

Matt Gessner wrote:
> Hi, 
> 
> I'm trying to figure out how to make my software field update process
> robust.  Currently, my bootcmd is 'fsload 20000000 uImage; bootm
> 20000000'

> Is there anyway for u-boot to determine, in one of these commands, that
> some command failed, and to do something else instead?

fsload 20000000 uImage && bootm 20000000

-- 
Timur Tabi
Linux Kernel Developer @ Freescale

[U-Boot-Users] bootcmd

[Wolfgang Denk]

In message <465DE93D.1010907@freescale.com> you wrote:
> Matt Gessner wrote:
> > Hi, 
> > 
> > I'm trying to figure out how to make my software field update process
> > robust.  Currently, my bootcmd is 'fsload 20000000 uImage; bootm
> > 20000000'
> 
> > Is there anyway for u-boot to determine, in one of these commands, that
> > some command failed, and to do something else instead?
> 
> fsload 20000000 uImage && bootm 20000000

Or, without using the hush shell:

=> sete kaddr 20000000
=> sete kload 'fsload ${kaddr} uImage'
=> sete kboot 'bootm ${kaddr}'
=> save

followed by "run kload kboot"

See http://www.denx.de/wiki/view/DULG/CommandLineParsing for details.

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
Es sind ?berhaupt nur die Dummk?pfe, die sich den Befehlen der  M?ch-
tigen  widersetzen.  Um  sie  zu ruinieren ist es genug, ihre Befehle
treu zu erf?llen.                  - Peter Hacks: "Die sch?ne Helena"

[U-Boot-Users] bootcmd

[Matt Gessner]

Thanks Wolfgang & Timur,

I think I want something like this:

	setenv addr 20000000
	fsload $addr uImage || fsload $addr uImage.new && bootm $addr

If the bootloader can't find uImage, try to find uImage.new.

Does that make sense?  I'm using u-boot 1.2.0.

Matt

> -----Original Message-----
> From: wd at denx.de [mailto:wd at denx.de]
> Sent: Wednesday, May 30, 2007 7:23 PM
> To: Timur Tabi
> Cc: Matt Gessner; u-boot-users at lists.sourceforge.net
> Subject: Re: [U-Boot-Users] bootcmd
> 
> In message <465DE93D.1010907@freescale.com> you wrote:
> > Matt Gessner wrote:
> > > Hi,
> > >
> > > I'm trying to figure out how to make my software field update process
> > > robust.  Currently, my bootcmd is 'fsload 20000000 uImage; bootm
> > > 20000000'
> >
> > > Is there anyway for u-boot to determine, in one of these commands,
> that
> > > some command failed, and to do something else instead?
> >
> > fsload 20000000 uImage && bootm 20000000
> 
> Or, without using the hush shell:
> 
> => sete kaddr 20000000
> => sete kload 'fsload ${kaddr} uImage'
> => sete kboot 'bootm ${kaddr}'
> => save
> 
> followed by "run kload kboot"
> 
> See http://www.denx.de/wiki/view/DULG/CommandLineParsing for details.
> 
> 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
> Es sind ?berhaupt nur die Dummk?pfe, die sich den Befehlen der  M?ch-
> tigen  widersetzen.  Um  sie  zu ruinieren ist es genug, ihre Befehle
> treu zu erf?llen.                  - Peter Hacks: "Die sch?ne Helena"
> 

[U-Boot-Users] bootcmd

[Wolfgang Denk]

In message <131AF8573CF31945B5B11E4201D3F1E142BC78@mail3.Avidyne.com> you wrote:
> 
> 	setenv addr 20000000
> 	fsload $addr uImage || fsload $addr uImage.new && bootm $addr
> 
> If the bootloader can't find uImage, try to find uImage.new.
> 
> Does that make sense?  I'm using u-boot 1.2.0.

Sure, why not? Just enable the hush shell in your board config file.

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
"There are three principal ways to lose money: wine, women,  and  en-
gineers.  While  the first two are more pleasant, the third is by far
the more certain."                      -- Baron Rothschild, ca. 1800

[U-Boot-Users] bootcmd

[Matt Gessner]

OK, I tried something slightly different but it doesn't boot.

fsload $addr uImage || chpart nand0,1 || fsload $addr uImage && bootm
$addr

I can tell it didn't find uImage in the first partition and that it
switched over to the second partition (b/c mtddevnum changes).  Then it
loaded uImage from the second partition, but then I get a prompt back.

Any suggestions??

Thanks,

Matt

> -----Original Message-----
> From: wd at denx.de [mailto:wd at denx.de]
> Sent: Thursday, May 31, 2007 10:02 AM
> To: Matt Gessner
> Cc: u-boot-users at lists.sourceforge.net
> Subject: Re: [U-Boot-Users] bootcmd
> 
> In message <131AF8573CF31945B5B11E4201D3F1E142BC78@mail3.Avidyne.com>
you
> wrote:
> >
> > 	setenv addr 20000000
> > 	fsload $addr uImage || fsload $addr uImage.new && bootm $addr
> >
> > If the bootloader can't find uImage, try to find uImage.new.
> >
> > Does that make sense?  I'm using u-boot 1.2.0.
> 
> Sure, why not? Just enable the hush shell in your board config file.
> 
> 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
> "There are three principal ways to lose money: wine, women,  and  en-
> gineers.  While  the first two are more pleasant, the third is by far
> the more certain."                      -- Baron Rothschild, ca. 1800

[U-Boot-Users] bootcmd

[Wolfgang Denk]

In message <131AF8573CF31945B5B11E4201D3F1E142BC7A@mail3.Avidyne.com> you wrote:
> OK, I tried something slightly different but it doesn't boot.
> 
> fsload $addr uImage || chpart nand0,1 || fsload $addr uImage && bootm
> $addr

Try:

=> sete load_alt 'chpart nand0,1 && fsload $addr uImage'
=> sete load_img 'fsload $addr uImage || run load_alt'
=> run load_img && bootm

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
A little suffering is good for the soul.
	-- Kirk, "The Corbomite Maneuver", stardate 1514.0