[U-Boot] Building uImage with multiple load addresses

[U-Boot] Building uImage with multiple load addresses

[Fabio Estevam]

Hi,

When trying to build imx_v4_v5_defconfig, or mx3_defconfig, or
mx5_defconfig on a 3.2-rc6 kernel I get:

  Kernel: arch/arm/boot/Image is ready
  Kernel: arch/arm/boot/zImage is ready
multiple load addresses: 0x80008000 0x80008000 0x10008000
This is incompatible with uImages
Specify LOADADDR on the commandline to build an uImage
make[1]: *** [arch/arm/boot/uImage] Error 1
make: *** [uImage] Error 2


I started a thread at the ARM kernel list:
http://marc.info/?l=linux-arm-kernel&m=132343317014712&w=2

,but I think the U-boot list is the more appropriate one to discuss
this kind of issue.

So what is the correct way to build a uImage for i.MX now?

Do I need to do any changes to mkimage?

Thanks,

Fabio Estevam

[U-Boot] Building uImage with multiple load addresses

[Fabio Estevam]

On Wed, Dec 21, 2011 at 7:24 PM, Fabio Estevam <festevam@gmail.com> wrote:
> Hi,
>
> When trying to build imx_v4_v5_defconfig, or mx3_defconfig, or
> mx5_defconfig on a 3.2-rc6 kernel I get:
>
> ?Kernel: arch/arm/boot/Image is ready
> ?Kernel: arch/arm/boot/zImage is ready
> multiple load addresses: 0x80008000 0x80008000 0x10008000
> This is incompatible with uImages
> Specify LOADADDR on the commandline to build an uImage
> make[1]: *** [arch/arm/boot/uImage] Error 1
> make: *** [uImage] Error 2
>
>
> I started a thread at the ARM kernel list:
> http://marc.info/?l=linux-arm-kernel&m=132343317014712&w=2
>
> ,but I think the U-boot list is the more appropriate one to discuss
> this kind of issue.
>
> So what is the correct way to build a uImage for i.MX now?
>
> Do I need to do any changes to mkimage?

Ok, this is the method I can think of:

Let's say I want build a kernel for mx53:

make
(This will produce a zImage)

make uImage LOADADDR=0x70008000

The LOADADDR can be retrieved from:
arch/arm/mach-imx/Makefile.boot
or
arch/arm/mach-mx5/Makefile.boot

Is this the recommended approach or is there any other suggestion to
make this easier?

Regards,

Fabio Estevam

[U-Boot] Building uImage with multiple load addresses

[Stephen Warren]

On 12/21/2011 03:20 PM, Fabio Estevam wrote:
> On Wed, Dec 21, 2011 at 7:24 PM, Fabio Estevam <festevam@gmail.com> wrote:
>> Hi,
>>
>> When trying to build imx_v4_v5_defconfig, or mx3_defconfig, or
>> mx5_defconfig on a 3.2-rc6 kernel I get:
>> ...
>> multiple load addresses: 0x80008000 0x80008000 0x10008000
>> This is incompatible with uImages
>> ...
>> Do I need to do any changes to mkimage?
>> ...

I'd suggest using "mkimage -t kernel_noload" instead of "mkimage -t
kernel". That way, you don't have to specify an load/entry address; the
kernel will be executed wherever you happen to load it in memory, which
should work fine for an ARM zImage at least.

This feature was introduced pretty recently in mainline U-Boot though,
so you'll need to build your own new U-boot and mkimage tool.

-- 
nvpublic

[U-Boot] Building uImage with multiple load addresses

[Marek Vasut]

> On 12/21/2011 03:20 PM, Fabio Estevam wrote:
> > On Wed, Dec 21, 2011 at 7:24 PM, Fabio Estevam <festevam@gmail.com> wrote:
> >> Hi,
> >> 
> >> When trying to build imx_v4_v5_defconfig, or mx3_defconfig, or
> >> mx5_defconfig on a 3.2-rc6 kernel I get:
> >> ...
> >> multiple load addresses: 0x80008000 0x80008000 0x10008000
> >> This is incompatible with uImages
> >> ...
> >> Do I need to do any changes to mkimage?
> >> ...
> 
> I'd suggest using "mkimage -t kernel_noload" instead of "mkimage -t
> kernel". That way, you don't have to specify an load/entry address; the
> kernel will be executed wherever you happen to load it in memory, which
> should work fine for an ARM zImage at least.
> 
> This feature was introduced pretty recently in mainline U-Boot though,
> so you'll need to build your own new U-boot and mkimage tool.

I think this is fine. And I agree to use this approach. Stephen, I won't be able 
to finish the u-boot/zImage support any soon, exams started for me now.

M

[U-Boot] Building uImage with multiple load addresses

[Stefano Babic]

On 21/12/2011 23:20, Fabio Estevam wrote:

> Ok, this is the method I can think of:
> 
> Let's say I want build a kernel for mx53:
> 
> make
> (This will produce a zImage)
> 
> make uImage LOADADDR=0x70008000

Exactly, I do the same.

> 
> The LOADADDR can be retrieved from:
> arch/arm/mach-imx/Makefile.boot
> or
> arch/arm/mach-mx5/Makefile.boot
> 
> Is this the recommended approach or is there any other suggestion to
> make this easier?

I am not aware of another way.

Regards,
Stefano Babic

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[U-Boot] Building uImage with multiple load addresses

[Wolfgang Denk]

Dear Stefano Babic,

In message <4EF2EFF1.1030406@denx.de> you wrote:
>
> > make uImage LOADADDR=0x70008000
> 
> Exactly, I do the same.

Before, you wrote you were using 0x80008000 ...


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
You!  What PLANET is this!
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[U-Boot] Building uImage with multiple load addresses

[Stefano Babic]

On 22/12/2011 10:02, Wolfgang Denk wrote:
> Dear Stefano Babic,
> 
> In message <4EF2EFF1.1030406@denx.de> you wrote:
>>
>>> make uImage LOADADDR=0x70008000
>>
>> Exactly, I do the same.
> 
> Before, you wrote you were using 0x80008000 ...

No, I don't: I wrote that I am using 0x80008000 for MX3. Fabio wrote the
example for MX53, and the value is correct (0x70008000). And for MX51 we
have another one (on the MX51 the RAM starts at address 0x90000000).

There is no a general load address for all IMX SOCs.

Best regards,
Stefano Babic

-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================

[U-Boot] Building uImage with multiple load addresses

[Wolfgang Denk]

Dear Stefano Babic,

In message <4EF2F5DC.8010703@denx.de> you wrote:
>
> >>> make uImage LOADADDR=0x70008000
> >>
> >> Exactly, I do the same.
> > 
> > Before, you wrote you were using 0x80008000 ...
> 
> No, I don't: I wrote that I am using 0x80008000 for MX3. Fabio wrote the
> example for MX53, and the value is correct (0x70008000). And for MX51 we
> have another one (on the MX51 the RAM starts at address 0x90000000).
> 
> There is no a general load address for all IMX SOCs.

I'm aware of this.  But this was what Fabio quoted from the Linux
messages:

> > ?Kernel: arch/arm/boot/Image is ready
> > ?Kernel: arch/arm/boot/zImage is ready
> > multiple load addresses: 0x80008000 0x80008000 0x10008000

This does not list 0x70008000 as an option (instead it lists
0x80008000 twice?).  So is this a bug in / deficiency of the Linux
kernel?

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
Philosophy:  A route of many roads leading from nowhere to nothing.
- Ambrose Bierce

[U-Boot] Building uImage with multiple load addresses

[Fabio Estevam]

Hi Wolfgang,

On Thu, Dec 22, 2011 at 10:04 AM, Wolfgang Denk <wd@denx.de> wrote:

> I'm aware of this. ?But this was what Fabio quoted from the Linux
> messages:
>
>> > ?Kernel: arch/arm/boot/Image is ready
>> > ?Kernel: arch/arm/boot/zImage is ready
>> > multiple load addresses: 0x80008000 0x80008000 0x10008000
>
> This does not list 0x70008000 as an option (instead it lists
> 0x80008000 twice?). ?So is this a bug in / deficiency of the Linux
> kernel?

Sorry for the confusion.

The list shown above is for the mx3_defconfig target and that's why it
does not show 0x70008000.

Currently the mx3_defconfig target can build a kernel for the
following processors:
SOC_IMX31 , SOC_IMX35 and SOC_IMX6Q

,and their load addresses are according to
arch/arm/mach-imx/Makefile.boot are:

0x80008000 0x80008000 0x10008000 , which matches the list shown above.

The load addresses for MX53 is 0x70008000 as Stefano mentioned, and
can be confirmed at:
arch/arm/mach-mx5/Makefile.boot.

Regards,

Fabio Estevam

[U-Boot] Building uImage with multiple load addresses

[Stefano Babic]

On 21/12/2011 22:24, Fabio Estevam wrote:
> Hi,
> 
> When trying to build imx_v4_v5_defconfig, or mx3_defconfig, or
> mx5_defconfig on a 3.2-rc6 kernel I get:
> 
>   Kernel: arch/arm/boot/Image is ready
>   Kernel: arch/arm/boot/zImage is ready
> multiple load addresses: 0x80008000 0x80008000 0x10008000
> This is incompatible with uImages
> Specify LOADADDR on the commandline to build an uImage
> make[1]: *** [arch/arm/boot/uImage] Error 1
> make: *** [uImage] Error 2
> 
> 
> I started a thread at the ARM kernel list:
> http://marc.info/?l=linux-arm-kernel&m=132343317014712&w=2
> 
> ,but I think the U-boot list is the more appropriate one to discuss
> this kind of issue.
> 
> So what is the correct way to build a uImage for i.MX now?

Well, I build setting LOADADDR=0x80008000 before make (I think your
example is for MX3).

Stefano

-- 
=====================================================================
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80  Email: office at denx.de
=====================================================================