IMAGE_BOOTLOADER vs. PREFERRED_PROVIDER_virtual/bootloader

IMAGE_BOOTLOADER vs. PREFERRED_PROVIDER_virtual/bootloader

[Mario Domenech Goulart]

Hi,

I'm making a script to extract data out of bitbake's cache metadata and
stumbled upon IMAGE_BOOTLOADER.

Is there any special reason to use IMAGE_BOOTLOADER instead of
PREFERRED_PROVIDER_virtual/bootloader?

Best wishes.
Mario
-- 
http://www.ossystems.com.br

Re: IMAGE_BOOTLOADER vs. PREFERRED_PROVIDER_virtual/bootloader

[Daiane Angolini]

On Tue, Apr 15, 2014 at 3:23 PM, Mario Domenech Goulart
<mario@ossystems.com.br> wrote:
> Hi,
>
> I'm making a script to extract data out of bitbake's cache metadata and
> stumbled upon IMAGE_BOOTLOADER.
>
> Is there any special reason to use IMAGE_BOOTLOADER instead of
> PREFERRED_PROVIDER_virtual/bootloader?
>

It is used in image_types_fsl.bbclass [1] during the sdcard creation.

I´m not sure if it would be, currently, absolutely needed.... but it
seems to be working.


[1] http://git.yoctoproject.org/cgit/cgit.cgi/meta-fsl-arm/tree/classes/image_types_fsl.bbclass#n185



Thanks for asking,
Daiane

> Best wishes.
> Mario
> --
> http://www.ossystems.com.br
> --
> _______________________________________________
> meta-freescale mailing list
> meta-freescale@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/meta-freescale

Re: IMAGE_BOOTLOADER vs. PREFERRED_PROVIDER_virtual/bootloader

[Otavio Salvador]

Hello Mario,

On Tue, Apr 15, 2014 at 3:23 PM, Mario Domenech Goulart
<mario@ossystems.com.br> wrote:
> I'm making a script to extract data out of bitbake's cache metadata and
> stumbled upon IMAGE_BOOTLOADER.
>
> Is there any special reason to use IMAGE_BOOTLOADER instead of
> PREFERRED_PROVIDER_virtual/bootloader?

Very good point.  I think when I did the class, for SD card
generation, we hadn't this around (or I missed it).

Looking at it, this should indeed be dropped but it is going to need
some work as we need to provide a u-boot-dummy for the cases when we
don't need a bootloader in the SD card image, as it is the case for
Nitrogen boards for example.

We can discuss how to address it for 1.7 later.

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750

Re: IMAGE_BOOTLOADER vs. PREFERRED_PROVIDER_virtual/bootloader

[Mario Domenech Goulart]

Hi,

On Sun, 20 Apr 2014 16:44:15 -0300 Otavio Salvador <otavio@ossystems.com.br> wrote:

> On Tue, Apr 15, 2014 at 3:23 PM, Mario Domenech Goulart
> <mario@ossystems.com.br> wrote:
>> I'm making a script to extract data out of bitbake's cache metadata and
>> stumbled upon IMAGE_BOOTLOADER.
>>
>> Is there any special reason to use IMAGE_BOOTLOADER instead of
>> PREFERRED_PROVIDER_virtual/bootloader?
>
> Very good point.  I think when I did the class, for SD card
> generation, we hadn't this around (or I missed it).
>
> Looking at it, this should indeed be dropped but it is going to need
> some work as we need to provide a u-boot-dummy for the cases when we
> don't need a bootloader in the SD card image, as it is the case for
> Nitrogen boards for example.
>
> We can discuss how to address it for 1.7 later.

Ok.

There are also boards which set PREFERRED_PROVIDER_u-boot.  As far as I
understand, PREFERRED_PROVIDER_virtual/bootloader would do the trick for
those cases too.

Best wishes.
Mario
-- 
http://www.ossystems.com.br

Re: IMAGE_BOOTLOADER vs. PREFERRED_PROVIDER_virtual/bootloader

[Otavio Salvador]

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Hello,

On Tue, Apr 22, 2014 at 4:59 PM, Mario Domenech Goulart <
mario@ossystems.com.br> wrote:

> On Sun, 20 Apr 2014 16:44:15 -0300 Otavio Salvador <
> otavio@ossystems.com.br> wrote:
>
> > On Tue, Apr 15, 2014 at 3:23 PM, Mario Domenech Goulart
> > <mario@ossystems.com.br> wrote:
> >> I'm making a script to extract data out of bitbake's cache metadata and
> >> stumbled upon IMAGE_BOOTLOADER.
> >>
> >> Is there any special reason to use IMAGE_BOOTLOADER instead of
> >> PREFERRED_PROVIDER_virtual/bootloader?
> >
> > Very good point.  I think when I did the class, for SD card
> > generation, we hadn't this around (or I missed it).
> >
> > Looking at it, this should indeed be dropped but it is going to need
> > some work as we need to provide a u-boot-dummy for the cases when we
> > don't need a bootloader in the SD card image, as it is the case for
> > Nitrogen boards for example.
> >
> > We can discuss how to address it for 1.7 later.
>
> Ok.
>
> There are also boards which set PREFERRED_PROVIDER_u-boot.  As far as I
> understand, PREFERRED_PROVIDER_virtual/bootloader would do the trick for
> those cases too.


Yes; but for example in Nitrogen case we need to have a 'u-boot-dummy'
which does nothing and the class know this is a 'nop' bootloader. That's
why I said it must to be worked in 1.7.

-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750

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