[PATCH master] ARM: omap: add two smaller MLO defconfigs for AM335x

[PATCH master] ARM: omap: add two smaller MLO defconfigs for AM335x

[Ahmad Fatoum]

The Beaglebone Black remains a popular board and it's not a good look to
have it not compile by default due to barebox getting too big.

As we keep running into size issues with the MLO defconfig, let's accept
that we die bite off more than we could chew and split off the defconfigs
into one for SD/MMC and another for NOR/NAND and document that users
should prefer those instead.

Reported-by: Sohaib Mohamed <sohaib.amhmd@gmail.com>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 Documentation/boards/am335x.rst    | 28 +++++++++++++++++++++++++---
 arch/arm/Makefile                  |  6 ++++++
 common/boards/configs/nomci.config |  1 +
 common/boards/configs/nomtd.config |  1 +
 4 files changed, 33 insertions(+), 3 deletions(-)
 create mode 100644 common/boards/configs/nomci.config
 create mode 100644 common/boards/configs/nomtd.config

diff --git a/Documentation/boards/am335x.rst b/Documentation/boards/am335x.rst
index f54611428bb3..ec7322a0acdf 100644
--- a/Documentation/boards/am335x.rst
+++ b/Documentation/boards/am335x.rst
@@ -8,9 +8,15 @@ loader from the same medium.
 Building barebox
 ----------------
 
-The TI AM335x boards in barebox are covered by the ``am335x_mlo_defconfig``
-for the MLO and ``omap_defconfig`` for the regular barebox image. The
-resulting images will be placed under ``images/``:
+Booting with barebox on the TI AM335x is a two-stage process and unlike
+more recently added SoCs, requires building barebox twice, each time
+with a different defconfig:
+
+* ``omap_defconfig`` for the regular (second-stage) barebox image
+* For the MLO first-stage, either ``am335x_mlo_sdmmc_defconfig`` for
+  SD/eMMC or ``am335x_mlo_rawflash_defconfig`` for raw NOR/NAND.
+
+The resulting images will be placed under ``images/``:
 
 ::
 
@@ -30,6 +36,22 @@ resulting images will be placed under ``images/``:
 
 Some boards come in different variants, make sure to pick the correct one.
 
+Size Constraints
+^^^^^^^^^^^^^^^^
+
+As the MLO needs to setup DRAM first, it must fit into the 109KiB
+of available on-Chip SRAM. Depending on the boards, drivers and general
+features enabled by your config, barebox may exceed this size resulting
+in an error message during build, e.g.::
+
+  images/start_am33xx_myirtech_sram.pblb size 111800 > maximum size 111616
+
+If you run into this issue, consider disabling some unneeded config options
+for the MLO via ``make menuconfig`` and try again.
+The ``am335x_mlo_sdmmc_defconfig`` and ``am335x_mlo_rawflash_defconfig``
+defconfigs do just that by disabling ``CONFIG_MTD`` and ``CONFIG_MCI``,
+respectively.
+
 Starting and updating barebox
 -----------------------------
 
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 6785432c52ca..7138f638651e 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -2,6 +2,12 @@
 
 KBUILD_DEFCONFIG := multi_v8_defconfig
 
+generated_configs += $(patsubst %, %_defconfig, sdmmc rawflash)
+am335x_mlo_sdmmc_defconfig:
+	$(call merge_into_defconfig,am335x_mlo_defconfig,nomtd)
+am335x_mlo_rawflash_defconfig:
+	$(call merge_into_defconfig,am335x_mlo_defconfig,nomci)
+
 KBUILD_CPPFLAGS	+= -D__ARM__ -fno-strict-aliasing
 # Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
 ifeq ($(CONFIG_CPU_64),y)
diff --git a/common/boards/configs/nomci.config b/common/boards/configs/nomci.config
new file mode 100644
index 000000000000..f541645cccfc
--- /dev/null
+++ b/common/boards/configs/nomci.config
@@ -0,0 +1 @@
+# CONFIG_MCI is not set
diff --git a/common/boards/configs/nomtd.config b/common/boards/configs/nomtd.config
new file mode 100644
index 000000000000..f29845573ae6
--- /dev/null
+++ b/common/boards/configs/nomtd.config
@@ -0,0 +1 @@
+# CONFIG_MTD is not set
-- 
2.39.5

Re: [PATCH master] ARM: omap: add two smaller MLO defconfigs for AM335x

[Sohaib Mohamed]

Hi,

On Sun, Dec 01, 2024 at 10:29:59PM +0100, Ahmad Fatoum wrote:
> The Beaglebone Black remains a popular board and it's not a good look to
> have it not compile by default due to barebox getting too big.
>
> As we keep running into size issues with the MLO defconfig, let's accept
> that we die bite off more than we could chew and split off the defconfigs
> into one for SD/MMC and another for NOR/NAND and document that users
> should prefer those instead.
>
> Reported-by: Sohaib Mohamed <sohaib.amhmd@gmail.com>
> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
> ---
>  Documentation/boards/am335x.rst    | 28 +++++++++++++++++++++++++---
>  arch/arm/Makefile                  |  6 ++++++
>  common/boards/configs/nomci.config |  1 +
>  common/boards/configs/nomtd.config |  1 +
>  4 files changed, 33 insertions(+), 3 deletions(-)
>  create mode 100644 common/boards/configs/nomci.config
>  create mode 100644 common/boards/configs/nomtd.config
>
> diff --git a/Documentation/boards/am335x.rst b/Documentation/boards/am335x.rst
> index f54611428bb3..ec7322a0acdf 100644
> --- a/Documentation/boards/am335x.rst
> +++ b/Documentation/boards/am335x.rst
> @@ -8,9 +8,15 @@ loader from the same medium.
>  Building barebox
>  ----------------
>
> -The TI AM335x boards in barebox are covered by the ``am335x_mlo_defconfig``
> -for the MLO and ``omap_defconfig`` for the regular barebox image. The
> -resulting images will be placed under ``images/``:
> +Booting with barebox on the TI AM335x is a two-stage process and unlike
> +more recently added SoCs, requires building barebox twice, each time
> +with a different defconfig:
> +
> +* ``omap_defconfig`` for the regular (second-stage) barebox image
> +* For the MLO first-stage, either ``am335x_mlo_sdmmc_defconfig`` for
> +  SD/eMMC or ``am335x_mlo_rawflash_defconfig`` for raw NOR/NAND.
> +
> +The resulting images will be placed under ``images/``:
>
>  ::
>
> @@ -30,6 +36,22 @@ resulting images will be placed under ``images/``:
>
>  Some boards come in different variants, make sure to pick the correct one.
>
> +Size Constraints
> +^^^^^^^^^^^^^^^^
> +
> +As the MLO needs to setup DRAM first, it must fit into the 109KiB
> +of available on-Chip SRAM. Depending on the boards, drivers and general
> +features enabled by your config, barebox may exceed this size resulting
> +in an error message during build, e.g.::
> +
> +  images/start_am33xx_myirtech_sram.pblb size 111800 > maximum size 111616
> +
> +If you run into this issue, consider disabling some unneeded config options
> +for the MLO via ``make menuconfig`` and try again.
> +The ``am335x_mlo_sdmmc_defconfig`` and ``am335x_mlo_rawflash_defconfig``
> +defconfigs do just that by disabling ``CONFIG_MTD`` and ``CONFIG_MCI``,
> +respectively.
> +
>  Starting and updating barebox
>  -----------------------------
>
> diff --git a/arch/arm/Makefile b/arch/arm/Makefile
> index 6785432c52ca..7138f638651e 100644
> --- a/arch/arm/Makefile
> +++ b/arch/arm/Makefile
> @@ -2,6 +2,12 @@
>
>  KBUILD_DEFCONFIG := multi_v8_defconfig
>
> +generated_configs += $(patsubst %, %_defconfig, sdmmc rawflash)
> +am335x_mlo_sdmmc_defconfig:
> +	$(call merge_into_defconfig,am335x_mlo_defconfig,nomtd)
> +am335x_mlo_rawflash_defconfig:
> +	$(call merge_into_defconfig,am335x_mlo_defconfig,nomci)
> +
>  KBUILD_CPPFLAGS	+= -D__ARM__ -fno-strict-aliasing
>  # Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
>  ifeq ($(CONFIG_CPU_64),y)
> diff --git a/common/boards/configs/nomci.config b/common/boards/configs/nomci.config
> new file mode 100644
> index 000000000000..f541645cccfc
> --- /dev/null
> +++ b/common/boards/configs/nomci.config
> @@ -0,0 +1 @@
> +# CONFIG_MCI is not set
> diff --git a/common/boards/configs/nomtd.config b/common/boards/configs/nomtd.config
> new file mode 100644
> index 000000000000..f29845573ae6
> --- /dev/null
> +++ b/common/boards/configs/nomtd.config
> @@ -0,0 +1 @@
> +# CONFIG_MTD is not set

Is it possible to remove also CONFIG_MACH_MYIRTECH_X335X by default, I
still get this error:

  OBJCOPYB images/start_am33xx_myirtech_sram.pblb
  CHKFILESIZE images/start_am33xx_myirtech_sram.pblb
  OBJCOPYB images/start_am33xx_phytec_phycore_r2_sram.pblb
images/start_am33xx_myirtech_sram.pblb size 111856 > maximum size 111616
make[1]: *** [/home/smalinux/repos/bbb/barebox_standalone/barebox/images/Makefile:82: images/start_am33xx_myirtech_sram.pblb] Error 1
make[1]: *** Deleting file 'images/start_am33xx_myirtech_sram.pblb'
make[1]: *** Waiting for unfinished jobs....
  CHKFILESIZE images/start_am33xx_phytec_phycore_r2_sram.pblb
make: *** [Makefile:736: images] Error 2



> --
> 2.39.5
>

Re: [PATCH master] ARM: omap: add two smaller MLO defconfigs for AM335x

[Sascha Hauer]

On Sun, Dec 01, 2024 at 11:53:59PM +0100, Sohaib Mohamed wrote:
> Hi,
> 
> On Sun, Dec 01, 2024 at 10:29:59PM +0100, Ahmad Fatoum wrote:
> > The Beaglebone Black remains a popular board and it's not a good look to
> > have it not compile by default due to barebox getting too big.
> >
> > As we keep running into size issues with the MLO defconfig, let's accept
> > that we die bite off more than we could chew and split off the defconfigs
> > into one for SD/MMC and another for NOR/NAND and document that users
> > should prefer those instead.
> >
> > Reported-by: Sohaib Mohamed <sohaib.amhmd@gmail.com>
> > Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
> > ---
> >  Documentation/boards/am335x.rst    | 28 +++++++++++++++++++++++++---
> >  arch/arm/Makefile                  |  6 ++++++
> >  common/boards/configs/nomci.config |  1 +
> >  common/boards/configs/nomtd.config |  1 +
> >  4 files changed, 33 insertions(+), 3 deletions(-)
> >  create mode 100644 common/boards/configs/nomci.config
> >  create mode 100644 common/boards/configs/nomtd.config
> >
> > diff --git a/Documentation/boards/am335x.rst b/Documentation/boards/am335x.rst
> > index f54611428bb3..ec7322a0acdf 100644
> > --- a/Documentation/boards/am335x.rst
> > +++ b/Documentation/boards/am335x.rst
> > @@ -8,9 +8,15 @@ loader from the same medium.
> >  Building barebox
> >  ----------------
> >
> > -The TI AM335x boards in barebox are covered by the ``am335x_mlo_defconfig``
> > -for the MLO and ``omap_defconfig`` for the regular barebox image. The
> > -resulting images will be placed under ``images/``:
> > +Booting with barebox on the TI AM335x is a two-stage process and unlike
> > +more recently added SoCs, requires building barebox twice, each time
> > +with a different defconfig:
> > +
> > +* ``omap_defconfig`` for the regular (second-stage) barebox image
> > +* For the MLO first-stage, either ``am335x_mlo_sdmmc_defconfig`` for
> > +  SD/eMMC or ``am335x_mlo_rawflash_defconfig`` for raw NOR/NAND.
> > +
> > +The resulting images will be placed under ``images/``:
> >
> >  ::
> >
> > @@ -30,6 +36,22 @@ resulting images will be placed under ``images/``:
> >
> >  Some boards come in different variants, make sure to pick the correct one.
> >
> > +Size Constraints
> > +^^^^^^^^^^^^^^^^
> > +
> > +As the MLO needs to setup DRAM first, it must fit into the 109KiB
> > +of available on-Chip SRAM. Depending on the boards, drivers and general
> > +features enabled by your config, barebox may exceed this size resulting
> > +in an error message during build, e.g.::
> > +
> > +  images/start_am33xx_myirtech_sram.pblb size 111800 > maximum size 111616
> > +
> > +If you run into this issue, consider disabling some unneeded config options
> > +for the MLO via ``make menuconfig`` and try again.
> > +The ``am335x_mlo_sdmmc_defconfig`` and ``am335x_mlo_rawflash_defconfig``
> > +defconfigs do just that by disabling ``CONFIG_MTD`` and ``CONFIG_MCI``,
> > +respectively.
> > +
> >  Starting and updating barebox
> >  -----------------------------
> >
> > diff --git a/arch/arm/Makefile b/arch/arm/Makefile
> > index 6785432c52ca..7138f638651e 100644
> > --- a/arch/arm/Makefile
> > +++ b/arch/arm/Makefile
> > @@ -2,6 +2,12 @@
> >
> >  KBUILD_DEFCONFIG := multi_v8_defconfig
> >
> > +generated_configs += $(patsubst %, %_defconfig, sdmmc rawflash)
> > +am335x_mlo_sdmmc_defconfig:
> > +	$(call merge_into_defconfig,am335x_mlo_defconfig,nomtd)
> > +am335x_mlo_rawflash_defconfig:
> > +	$(call merge_into_defconfig,am335x_mlo_defconfig,nomci)
> > +
> >  KBUILD_CPPFLAGS	+= -D__ARM__ -fno-strict-aliasing
> >  # Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
> >  ifeq ($(CONFIG_CPU_64),y)
> > diff --git a/common/boards/configs/nomci.config b/common/boards/configs/nomci.config
> > new file mode 100644
> > index 000000000000..f541645cccfc
> > --- /dev/null
> > +++ b/common/boards/configs/nomci.config
> > @@ -0,0 +1 @@
> > +# CONFIG_MCI is not set
> > diff --git a/common/boards/configs/nomtd.config b/common/boards/configs/nomtd.config
> > new file mode 100644
> > index 000000000000..f29845573ae6
> > --- /dev/null
> > +++ b/common/boards/configs/nomtd.config
> > @@ -0,0 +1 @@
> > +# CONFIG_MTD is not set
> 
> Is it possible to remove also CONFIG_MACH_MYIRTECH_X335X by default, I
> still get this error:

With Ahamds patch you have to use either am335x_mlo_sdmmc_defconfig
or am335x_mlo_rawflash_defconfig depending on where you are booting
from. Did you use one of them? Even with Ahmads patch the old
am335x_mlo_defconfig is still there and still leads to an image
exceeding the size limit.

Sascha

> 
>   OBJCOPYB images/start_am33xx_myirtech_sram.pblb
>   CHKFILESIZE images/start_am33xx_myirtech_sram.pblb
>   OBJCOPYB images/start_am33xx_phytec_phycore_r2_sram.pblb
> images/start_am33xx_myirtech_sram.pblb size 111856 > maximum size 111616
> make[1]: *** [/home/smalinux/repos/bbb/barebox_standalone/barebox/images/Makefile:82: images/start_am33xx_myirtech_sram.pblb] Error 1
> make[1]: *** Deleting file 'images/start_am33xx_myirtech_sram.pblb'
> make[1]: *** Waiting for unfinished jobs....
>   CHKFILESIZE images/start_am33xx_phytec_phycore_r2_sram.pblb
> make: *** [Makefile:736: images] Error 2
> 
> 
> 
> > --
> > 2.39.5
> >
> 
> 

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

Re: [PATCH master] ARM: omap: add two smaller MLO defconfigs for AM335x

[Ahmad Fatoum]

On 02.12.24 09:03, Sascha Hauer wrote:
> On Sun, Dec 01, 2024 at 11:53:59PM +0100, Sohaib Mohamed wrote:
>> Hi,
>>
>> On Sun, Dec 01, 2024 at 10:29:59PM +0100, Ahmad Fatoum wrote:
>>> The Beaglebone Black remains a popular board and it's not a good look to
>>> have it not compile by default due to barebox getting too big.
>>>
>>> As we keep running into size issues with the MLO defconfig, let's accept
>>> that we die bite off more than we could chew and split off the defconfigs
>>> into one for SD/MMC and another for NOR/NAND and document that users
>>> should prefer those instead.
>>>
>>> Reported-by: Sohaib Mohamed <sohaib.amhmd@gmail.com>
>>> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
>>> ---
>>>  Documentation/boards/am335x.rst    | 28 +++++++++++++++++++++++++---
>>>  arch/arm/Makefile                  |  6 ++++++
>>>  common/boards/configs/nomci.config |  1 +
>>>  common/boards/configs/nomtd.config |  1 +
>>>  4 files changed, 33 insertions(+), 3 deletions(-)
>>>  create mode 100644 common/boards/configs/nomci.config
>>>  create mode 100644 common/boards/configs/nomtd.config
>>>
>>> diff --git a/Documentation/boards/am335x.rst b/Documentation/boards/am335x.rst
>>> index f54611428bb3..ec7322a0acdf 100644
>>> --- a/Documentation/boards/am335x.rst
>>> +++ b/Documentation/boards/am335x.rst
>>> @@ -8,9 +8,15 @@ loader from the same medium.
>>>  Building barebox
>>>  ----------------
>>>
>>> -The TI AM335x boards in barebox are covered by the ``am335x_mlo_defconfig``
>>> -for the MLO and ``omap_defconfig`` for the regular barebox image. The
>>> -resulting images will be placed under ``images/``:
>>> +Booting with barebox on the TI AM335x is a two-stage process and unlike
>>> +more recently added SoCs, requires building barebox twice, each time
>>> +with a different defconfig:
>>> +
>>> +* ``omap_defconfig`` for the regular (second-stage) barebox image
>>> +* For the MLO first-stage, either ``am335x_mlo_sdmmc_defconfig`` for
>>> +  SD/eMMC or ``am335x_mlo_rawflash_defconfig`` for raw NOR/NAND.
>>> +
>>> +The resulting images will be placed under ``images/``:
>>>
>>>  ::
>>>
>>> @@ -30,6 +36,22 @@ resulting images will be placed under ``images/``:
>>>
>>>  Some boards come in different variants, make sure to pick the correct one.
>>>
>>> +Size Constraints
>>> +^^^^^^^^^^^^^^^^
>>> +
>>> +As the MLO needs to setup DRAM first, it must fit into the 109KiB
>>> +of available on-Chip SRAM. Depending on the boards, drivers and general
>>> +features enabled by your config, barebox may exceed this size resulting
>>> +in an error message during build, e.g.::
>>> +
>>> +  images/start_am33xx_myirtech_sram.pblb size 111800 > maximum size 111616
>>> +
>>> +If you run into this issue, consider disabling some unneeded config options
>>> +for the MLO via ``make menuconfig`` and try again.
>>> +The ``am335x_mlo_sdmmc_defconfig`` and ``am335x_mlo_rawflash_defconfig``
>>> +defconfigs do just that by disabling ``CONFIG_MTD`` and ``CONFIG_MCI``,
>>> +respectively.
>>> +
>>>  Starting and updating barebox
>>>  -----------------------------
>>>
>>> diff --git a/arch/arm/Makefile b/arch/arm/Makefile
>>> index 6785432c52ca..7138f638651e 100644
>>> --- a/arch/arm/Makefile
>>> +++ b/arch/arm/Makefile
>>> @@ -2,6 +2,12 @@
>>>
>>>  KBUILD_DEFCONFIG := multi_v8_defconfig
>>>
>>> +generated_configs += $(patsubst %, %_defconfig, sdmmc rawflash)
>>> +am335x_mlo_sdmmc_defconfig:
>>> +	$(call merge_into_defconfig,am335x_mlo_defconfig,nomtd)
>>> +am335x_mlo_rawflash_defconfig:
>>> +	$(call merge_into_defconfig,am335x_mlo_defconfig,nomci)
>>> +
>>>  KBUILD_CPPFLAGS	+= -D__ARM__ -fno-strict-aliasing
>>>  # Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
>>>  ifeq ($(CONFIG_CPU_64),y)
>>> diff --git a/common/boards/configs/nomci.config b/common/boards/configs/nomci.config
>>> new file mode 100644
>>> index 000000000000..f541645cccfc
>>> --- /dev/null
>>> +++ b/common/boards/configs/nomci.config
>>> @@ -0,0 +1 @@
>>> +# CONFIG_MCI is not set
>>> diff --git a/common/boards/configs/nomtd.config b/common/boards/configs/nomtd.config
>>> new file mode 100644
>>> index 000000000000..f29845573ae6
>>> --- /dev/null
>>> +++ b/common/boards/configs/nomtd.config
>>> @@ -0,0 +1 @@
>>> +# CONFIG_MTD is not set
>>
>> Is it possible to remove also CONFIG_MACH_MYIRTECH_X335X by default, I
>> still get this error:
> 
> With Ahamds patch you have to use either am335x_mlo_sdmmc_defconfig
> or am335x_mlo_rawflash_defconfig depending on where you are booting
> from. Did you use one of them? Even with Ahmads patch the old
> am335x_mlo_defconfig is still there and still leads to an image
> exceeding the size limit.

In addition to what Sascha said, I shaved off 400~ more bytes in my v2.
This should give us enough breathing room for the next release.

For the release after that, I intend to rework the size check, so it doesn't
fail the build, but just produces a warning at the end of it, e.g.:

  images built:
  barebox-nxp-imx8mm-evk.img
  barebox-prt-prt8mm.img
  ** barebox-tqma93xx.img skipped due to missing firmware **
  ** barebox-karo-qsxp-ml81.img skipped due to size 111856 > maximum size 111616 **

Cheers,
Ahmad

> 
> Sascha
> 
>>
>>   OBJCOPYB images/start_am33xx_myirtech_sram.pblb
>>   CHKFILESIZE images/start_am33xx_myirtech_sram.pblb
>>   OBJCOPYB images/start_am33xx_phytec_phycore_r2_sram.pblb
>> images/start_am33xx_myirtech_sram.pblb size 111856 > maximum size 111616
>> make[1]: *** [/home/smalinux/repos/bbb/barebox_standalone/barebox/images/Makefile:82: images/start_am33xx_myirtech_sram.pblb] Error 1
>> make[1]: *** Deleting file 'images/start_am33xx_myirtech_sram.pblb'
>> make[1]: *** Waiting for unfinished jobs....
>>   CHKFILESIZE images/start_am33xx_phytec_phycore_r2_sram.pblb
>> make: *** [Makefile:736: images] Error 2
>>
>>
>>
>>> --
>>> 2.39.5
>>>
>>
>>
> 


-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

Re: [PATCH master] ARM: omap: add two smaller MLO defconfigs for AM335x

[Sascha Hauer]

On Sun, 01 Dec 2024 22:29:59 +0100, Ahmad Fatoum wrote:
> The Beaglebone Black remains a popular board and it's not a good look to
> have it not compile by default due to barebox getting too big.
> 
> As we keep running into size issues with the MLO defconfig, let's accept
> that we die bite off more than we could chew and split off the defconfigs
> into one for SD/MMC and another for NOR/NAND and document that users
> should prefer those instead.
> 
> [...]

Applied, thanks!

[1/1] ARM: omap: add two smaller MLO defconfigs for AM335x
      https://git.pengutronix.de/cgit/barebox/commit/?id=53c99b9f550b (link may not be stable)

Best regards,
-- 
Sascha Hauer <s.hauer@pengutronix.de>