diff mbox

[v4,7/7] beaglebone: adds barebox bootloader defconfig

Message ID 1458513351-6556-8-git-send-email-pieter@boesman.nl
State Superseded
Headers show

Commit Message

Pieter Smith March 20, 2016, 10:35 p.m. UTC 
* Builds the barebox MLO and bootloader.
* Generates a barebox environment that boots from eMMC by default.
* Barebox integrates a perfectly good device-tree for the bbb, so no dtb is
  being generated with the kernel.

Signed-off-by: Pieter Smith <pieter@boesman.nl>
---
 board/beaglebone/barebox.env/boot/sd      |  6 +++++
 board/beaglebone/barebox.env/config-board |  4 +++
 configs/beaglebone_barebox_defconfig      | 41 +++++++++++++++++++++++++++++++
 3 files changed, 51 insertions(+)
 create mode 100644 board/beaglebone/barebox.env/boot/sd
 create mode 100644 board/beaglebone/barebox.env/config-board
 create mode 100644 configs/beaglebone_barebox_defconfig

Comments

Yegor Yefremov March 31, 2016, 6:21 a.m. UTC | #1 
On Sun, Mar 20, 2016 at 11:35 PM, Pieter Smith <pieter@boesman.nl> wrote:
> * Builds the barebox MLO and bootloader.
> * Generates a barebox environment that boots from eMMC by default.
> * Barebox integrates a perfectly good device-tree for the bbb, so no dtb is
>   being generated with the kernel.
>
> Signed-off-by: Pieter Smith <pieter@boesman.nl>

Reviewed-by: Yegor Yefremov <yegorslists@googlemail.com>

> ---
>  board/beaglebone/barebox.env/boot/sd      |  6 +++++
>  board/beaglebone/barebox.env/config-board |  4 +++
>  configs/beaglebone_barebox_defconfig      | 41 +++++++++++++++++++++++++++++++
>  3 files changed, 51 insertions(+)
>  create mode 100644 board/beaglebone/barebox.env/boot/sd
>  create mode 100644 board/beaglebone/barebox.env/config-board
>  create mode 100644 configs/beaglebone_barebox_defconfig
>
> diff --git a/board/beaglebone/barebox.env/boot/sd b/board/beaglebone/barebox.env/boot/sd
> new file mode 100644
> index 0000000..7a80e29
> --- /dev/null
> +++ b/board/beaglebone/barebox.env/boot/sd
> @@ -0,0 +1,6 @@
> +#!/bin/sh
> +
> +global.bootm.image=/boot/zImage
> +#global.bootm.oftree=/boot/oftree
> +#global.bootm.initrd=<path to initrd>
> +global.linux.bootargs.dyn.root="root=/dev/mmcblk0p2 rootfstype=ext2 rootwait"
> diff --git a/board/beaglebone/barebox.env/config-board b/board/beaglebone/barebox.env/config-board
> new file mode 100644
> index 0000000..cd7b26d
> --- /dev/null
> +++ b/board/beaglebone/barebox.env/config-board
> @@ -0,0 +1,4 @@
> +#!/bin/sh
> +
> +global.boot.default=sd
> +
> diff --git a/configs/beaglebone_barebox_defconfig b/configs/beaglebone_barebox_defconfig
> new file mode 100644
> index 0000000..6324dbf
> --- /dev/null
> +++ b/configs/beaglebone_barebox_defconfig
> @@ -0,0 +1,41 @@
> +# architecture
> +BR2_arm=y
> +BR2_cortex_a8=y
> +BR2_ARM_EABIHF=y
> +
> +# system
> +BR2_TARGET_GENERIC_HOSTNAME="beaglebone"
> +BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_DEVTMPFS=y
> +BR2_TARGET_GENERIC_GETTY_PORT="ttyO0"
> +# BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW is not set
> +# BR2_ROOTFS_POST_IMAGE_SCRIPT is not set
> +
> +# filesystem
> +BR2_PACKAGE_AM33X_CM3=y
> +BR2_TARGET_ROOTFS_EXT2=y
> +# BR2_TARGET_ROOTFS_TAR is not set
> +
> +# Linux headers same as kernel, a 4.4 series
> +BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_4=y
> +
> +# bootloader
> +BR2_TARGET_BAREBOX=y
> +BR2_TARGET_BAREBOX_BOARD_DEFCONFIG="am335x"
> +BR2_TARGET_BAREBOX_BUILT_IMAGE_FILE="barebox-am33xx-beaglebone.img"
> +BR2_TARGET_BAREBOX_CUSTOM_ENV=y
> +BR2_TARGET_BAREBOX_CUSTOM_ENV_PATH="board/beaglebone/barebox.env"
> +BR2_TARGET_BAREBOX_2=y
> +BR2_TARGET_BAREBOX_2_BOARD_DEFCONFIG="am335x_mlo"
> +BR2_TARGET_BAREBOX_2_BUILT_IMAGE_FILE="barebox-am33xx-beaglebone-mlo.img"
> +BR2_TARGET_BAREBOX_2_OUTPUT_IMAGE_FILE="MLO"
> +
> +# kernel
> +BR2_LINUX_KERNEL=y
> +BR2_LINUX_KERNEL_CUSTOM_VERSION=y
> +BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.4.6"
> +BR2_LINUX_KERNEL_USE_DEFCONFIG=y
> +BR2_LINUX_KERNEL_DEFCONFIG="omap2plus"
> +BR2_LINUX_KERNEL_ZIMAGE=y
> +
> +# Use the barebox built-in dtb
> +# BR2_LINUX_KERNEL_DTS_SUPPORT is not set
> --
> 2.5.0
>
Arnout Vandecappelle April 4, 2016, 11:37 p.m. UTC | #2 
On 03/20/16 23:35, Pieter Smith wrote:
> * Builds the barebox MLO and bootloader.
> * Generates a barebox environment that boots from eMMC by default.
> * Barebox integrates a perfectly good device-tree for the bbb, so no dtb is
>    being generated with the kernel.
>
> Signed-off-by: Pieter Smith <pieter@boesman.nl>
> ---
>   board/beaglebone/barebox.env/boot/sd      |  6 +++++
>   board/beaglebone/barebox.env/config-board |  4 +++
>   configs/beaglebone_barebox_defconfig      | 41 +++++++++++++++++++++++++++++++
>   3 files changed, 51 insertions(+)
>   create mode 100644 board/beaglebone/barebox.env/boot/sd
>   create mode 100644 board/beaglebone/barebox.env/config-board
>   create mode 100644 configs/beaglebone_barebox_defconfig
>
> diff --git a/board/beaglebone/barebox.env/boot/sd b/board/beaglebone/barebox.env/boot/sd
> new file mode 100644
> index 0000000..7a80e29
> --- /dev/null
> +++ b/board/beaglebone/barebox.env/boot/sd
> @@ -0,0 +1,6 @@
> +#!/bin/sh

  Is that needed/useful?

> +
> +global.bootm.image=/boot/zImage
> +#global.bootm.oftree=/boot/oftree

  Maybe repeat here the comment about using the built-in DT.

> +#global.bootm.initrd=<path to initrd>

  I would remove this line, it's not very useful.

> +global.linux.bootargs.dyn.root="root=/dev/mmcblk0p2 rootfstype=ext2 rootwait"
> diff --git a/board/beaglebone/barebox.env/config-board b/board/beaglebone/barebox.env/config-board
> new file mode 100644
> index 0000000..cd7b26d
> --- /dev/null
> +++ b/board/beaglebone/barebox.env/config-board
> @@ -0,0 +1,4 @@
> +#!/bin/sh
> +
> +global.boot.default=sd
> +
> diff --git a/configs/beaglebone_barebox_defconfig b/configs/beaglebone_barebox_defconfig
> new file mode 100644
> index 0000000..6324dbf
> --- /dev/null
> +++ b/configs/beaglebone_barebox_defconfig
> @@ -0,0 +1,41 @@
> +# architecture
> +BR2_arm=y
> +BR2_cortex_a8=y
> +BR2_ARM_EABIHF=y
> +
> +# system
> +BR2_TARGET_GENERIC_HOSTNAME="beaglebone"
> +BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_DEVTMPFS=y
> +BR2_TARGET_GENERIC_GETTY_PORT="ttyO0"

  Does the default (console) not work well?

> +# BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW is not set

  Why?

> +# BR2_ROOTFS_POST_IMAGE_SCRIPT is not set

  This is the default. However, it would be nice if you could add a genimage 
script. Pandaboard should be a good basis.

> +
> +# filesystem
> +BR2_PACKAGE_AM33X_CM3=y
> +BR2_TARGET_ROOTFS_EXT2=y

  We tend to prefer ext4 nowadays.

> +# BR2_TARGET_ROOTFS_TAR is not set
> +
> +# Linux headers same as kernel, a 4.4 series
> +BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_4=y

  The version should be really locked down, i.e.:

BR2_LINUX_KERNEL_CUSTOM_VERSION=y
BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.4.6"

> +
> +# bootloader
> +BR2_TARGET_BAREBOX=y
> +BR2_TARGET_BAREBOX_BOARD_DEFCONFIG="am335x"
> +BR2_TARGET_BAREBOX_BUILT_IMAGE_FILE="barebox-am33xx-beaglebone.img"
> +BR2_TARGET_BAREBOX_CUSTOM_ENV=y
> +BR2_TARGET_BAREBOX_CUSTOM_ENV_PATH="board/beaglebone/barebox.env"
> +BR2_TARGET_BAREBOX_2=y
> +BR2_TARGET_BAREBOX_2_BOARD_DEFCONFIG="am335x_mlo"
> +BR2_TARGET_BAREBOX_2_BUILT_IMAGE_FILE="barebox-am33xx-beaglebone-mlo.img"
> +BR2_TARGET_BAREBOX_2_OUTPUT_IMAGE_FILE="MLO"
> +
> +# kernel
> +BR2_LINUX_KERNEL=y
> +BR2_LINUX_KERNEL_CUSTOM_VERSION=y
> +BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.4.6"

  Maybe you can switch to 4.5 already?

> +BR2_LINUX_KERNEL_USE_DEFCONFIG=y
> +BR2_LINUX_KERNEL_DEFCONFIG="omap2plus"
> +BR2_LINUX_KERNEL_ZIMAGE=y
> +
> +# Use the barebox built-in dtb
> +# BR2_LINUX_KERNEL_DTS_SUPPORT is not set

  Good to put this here!

  Regards,
  Arnout
Pieter Smith April 19, 2016, 8:26 p.m. UTC | #3 
On Tue, Apr 05, 2016 at 01:37:46AM +0200, Arnout Vandecappelle wrote:
> On 03/20/16 23:35, Pieter Smith wrote:
> >* Builds the barebox MLO and bootloader.
> >* Generates a barebox environment that boots from eMMC by default.
> >* Barebox integrates a perfectly good device-tree for the bbb, so no dtb is
> >   being generated with the kernel.
> >
> >Signed-off-by: Pieter Smith <pieter@boesman.nl>
> >---
> >  board/beaglebone/barebox.env/boot/sd      |  6 +++++
> >  board/beaglebone/barebox.env/config-board |  4 +++
> >  configs/beaglebone_barebox_defconfig      | 41 +++++++++++++++++++++++++++++++
> >  3 files changed, 51 insertions(+)
> >  create mode 100644 board/beaglebone/barebox.env/boot/sd
> >  create mode 100644 board/beaglebone/barebox.env/config-board
> >  create mode 100644 configs/beaglebone_barebox_defconfig
> >
> >diff --git a/board/beaglebone/barebox.env/boot/sd b/board/beaglebone/barebox.env/boot/sd
> >new file mode 100644
> >index 0000000..7a80e29
> >--- /dev/null
> >+++ b/board/beaglebone/barebox.env/boot/sd
> >@@ -0,0 +1,6 @@
> >+#!/bin/sh
> 
>  Is that needed/useful?

If you are referring to the interpreter specification: I suspect no, but all
barebox scripts in barebox specify the interpreter, so I would like not to
stray from the convention.

If you are referring to the presence of the sd script: Yes. The device name
needs to be changed from the default to work with the Beaglebone.

> >+
> >+global.bootm.image=/boot/zImage
> >+#global.bootm.oftree=/boot/oftree
> 
>  Maybe repeat here the comment about using the built-in DT.

ACK. Will be in v5 of the patch-set. I will not be removing the commented lines
though. The convention is to leave these in so that the user can tune them if
he wants something different.

> >+#global.bootm.initrd=<path to initrd>
> 
>  I would remove this line, it's not very useful.

These are kept in the scripts for a reason. These scripts are left as
placeholders for easy tuning by the user. I also decided to retain this because
it is present in the defaults included with barebox. If you feel strongly about
this, I can remove it, but I would prefer to keep it in.

[snip]

> >+# system
> >+BR2_TARGET_GENERIC_HOSTNAME="beaglebone"
> >+BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_DEVTMPFS=y
> >+BR2_TARGET_GENERIC_GETTY_PORT="ttyO0"
> 
>  Does the default (console) not work well?

I inherited this from the beaglebone_defconfig. I know that the beaglebone uses
a different serial port for the console than the Phytec am33xx modules (the
default for the BSP), so I am quite sure this is necessary.

> >+# BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW is not set
> 
>  Why?

Again... Inherited from beaglebone_defconfig. I see no need to stick to this.
Will be RW in v5 of the patch-set.

> >+# BR2_ROOTFS_POST_IMAGE_SCRIPT is not set
> 
>  This is the default. However, it would be nice if you could add a genimage
> script. Pandaboard should be a good basis.

ACK. Will be in v5 of the patch-set as per the discussion on "[PATCH v4 3/7]
barebox: support custom barebox output image name"

> >+
> >+# filesystem
> >+BR2_PACKAGE_AM33X_CM3=y
> >+BR2_TARGET_ROOTFS_EXT2=y
> 
>  We tend to prefer ext4 nowadays.

ACK. Will be ext4 in v5 of the patch-set.

> >+# BR2_TARGET_ROOTFS_TAR is not set
> >+
> >+# Linux headers same as kernel, a 4.4 series
> >+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_4=y
> 
>  The version should be really locked down, i.e.:
> 
> BR2_LINUX_KERNEL_CUSTOM_VERSION=y
> BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.4.6"

ACK. Will be locked down in v5 of the patch-set.

[snip]

> >+# kernel
> >+BR2_LINUX_KERNEL=y
> >+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
> >+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.4.6"
> 
>  Maybe you can switch to 4.5 already?

ACK. Will verify and change if nothing breaks.

> >+BR2_LINUX_KERNEL_USE_DEFCONFIG=y
> >+BR2_LINUX_KERNEL_DEFCONFIG="omap2plus"
> >+BR2_LINUX_KERNEL_ZIMAGE=y
> >+
> >+# Use the barebox built-in dtb
> >+# BR2_LINUX_KERNEL_DTS_SUPPORT is not set
> 
>  Good to put this here!

As per your recommendation on v4 of the patch-set.

[snip]

- Pieter
Arnout Vandecappelle April 19, 2016, 10:13 p.m. UTC | #4 
On 04/19/16 22:26, Pieter Smith wrote:
> On Tue, Apr 05, 2016 at 01:37:46AM +0200, Arnout Vandecappelle wrote:
>> On 03/20/16 23:35, Pieter Smith wrote:
>>> * Builds the barebox MLO and bootloader.
>>> * Generates a barebox environment that boots from eMMC by default.
>>> * Barebox integrates a perfectly good device-tree for the bbb, so no dtb is
>>>    being generated with the kernel.
>>>
>>> Signed-off-by: Pieter Smith <pieter@boesman.nl>
>>> ---
>>>   board/beaglebone/barebox.env/boot/sd      |  6 +++++
>>>   board/beaglebone/barebox.env/config-board |  4 +++
>>>   configs/beaglebone_barebox_defconfig      | 41 +++++++++++++++++++++++++++++++
>>>   3 files changed, 51 insertions(+)
>>>   create mode 100644 board/beaglebone/barebox.env/boot/sd
>>>   create mode 100644 board/beaglebone/barebox.env/config-board
>>>   create mode 100644 configs/beaglebone_barebox_defconfig
>>>
>>> diff --git a/board/beaglebone/barebox.env/boot/sd b/board/beaglebone/barebox.env/boot/sd
>>> new file mode 100644
>>> index 0000000..7a80e29
>>> --- /dev/null
>>> +++ b/board/beaglebone/barebox.env/boot/sd
>>> @@ -0,0 +1,6 @@
>>> +#!/bin/sh
>>
>>   Is that needed/useful?
>
> If you are referring to the interpreter specification: I suspect no, but all
> barebox scripts in barebox specify the interpreter, so I would like not to
> stray from the convention.

  That's what I meant. So ok.

>
> If you are referring to the presence of the sd script: Yes. The device name
> needs to be changed from the default to work with the Beaglebone.
>
>>> +
>>> +global.bootm.image=/boot/zImage
>>> +#global.bootm.oftree=/boot/oftree
>>
>>   Maybe repeat here the comment about using the built-in DT.
>
> ACK. Will be in v5 of the patch-set. I will not be removing the commented lines
> though. The convention is to leave these in so that the user can tune them if
> he wants something different.

  ok.

>
>>> +#global.bootm.initrd=<path to initrd>
>>
>>   I would remove this line, it's not very useful.
>
> These are kept in the scripts for a reason. These scripts are left as
> placeholders for easy tuning by the user. I also decided to retain this because
> it is present in the defaults included with barebox. If you feel strongly about
> this, I can remove it, but I would prefer to keep it in.

  ok.

>
> [snip]
>
>>> +# system
>>> +BR2_TARGET_GENERIC_HOSTNAME="beaglebone"
>>> +BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_DEVTMPFS=y
>>> +BR2_TARGET_GENERIC_GETTY_PORT="ttyO0"
>>
>>   Does the default (console) not work well?
>
> I inherited this from the beaglebone_defconfig. I know that the beaglebone uses
> a different serial port for the console than the Phytec am33xx modules (the
> default for the BSP), so I am quite sure this is necessary.

  The serial port is already set in the barebox config, and is already passed on 
the kernel command line, so there shouldn't be a need to set it explicitly again 
in the buildroot config. The default getty port is 'console', which means to use 
the kernel console as getty port. In most cases that's what you want.

  The beaglebone defconfig still had an explicit getty port because it is still 
from the time that the default getty port was tty1.

  So, ideally, please test that it still works without this line. But since you 
don't have a working beaglebone at the moment that will be tough...

[snip]
>>> +# Use the barebox built-in dtb
>>> +# BR2_LINUX_KERNEL_DTS_SUPPORT is not set
>>
>>   Good to put this here!
>
> As per your recommendation on v4 of the patch-set.

  I'm so great :-)

  Regards,
  Arnout
Pieter Smith April 23, 2016, 11:39 a.m. UTC | #5 
Hi Arnout,

On Wed, Apr 20, 2016 at 12:13:07AM +0200, Arnout Vandecappelle wrote:
> On 04/19/16 22:26, Pieter Smith wrote:
> >On Tue, Apr 05, 2016 at 01:37:46AM +0200, Arnout Vandecappelle wrote:
> >>On 03/20/16 23:35, Pieter Smith wrote:

[snip]

> >>>+BR2_TARGET_GENERIC_GETTY_PORT="ttyO0"
> >>
> >>  Does the default (console) not work well?
> >
> >I inherited this from the beaglebone_defconfig. I know that the beaglebone uses
> >a different serial port for the console than the Phytec am33xx modules (the
> >default for the BSP), so I am quite sure this is necessary.
> 
>  The serial port is already set in the barebox config, and is already passed
> on the kernel command line, so there shouldn't be a need to set it
> explicitly again in the buildroot config. The default getty port is
> 'console', which means to use the kernel console as getty port. In most
> cases that's what you want.
> 
>  The beaglebone defconfig still had an explicit getty port because it is
> still from the time that the default getty port was tty1.
> 
>  So, ideally, please test that it still works without this line. But since
> you don't have a working beaglebone at the moment that will be tough...

Tested and it works. Will be gone in patch v5.

> [snip]
> >>>+# Use the barebox built-in dtb
> >>>+# BR2_LINUX_KERNEL_DTS_SUPPORT is not set
> >>
> >>  Good to put this here!
> >
> >As per your recommendation on v4 of the patch-set.
> 
>  I'm so great :-)

Smile once a while when you look down on us mere mortals ;-)

[snip]

- Pieter Smith
diff mbox

Patch

diff --git a/board/beaglebone/barebox.env/boot/sd b/board/beaglebone/barebox.env/boot/sd
new file mode 100644
index 0000000..7a80e29
--- /dev/null
+++ b/board/beaglebone/barebox.env/boot/sd
@@ -0,0 +1,6 @@ 
+#!/bin/sh
+
+global.bootm.image=/boot/zImage
+#global.bootm.oftree=/boot/oftree
+#global.bootm.initrd=<path to initrd>
+global.linux.bootargs.dyn.root="root=/dev/mmcblk0p2 rootfstype=ext2 rootwait"
diff --git a/board/beaglebone/barebox.env/config-board b/board/beaglebone/barebox.env/config-board
new file mode 100644
index 0000000..cd7b26d
--- /dev/null
+++ b/board/beaglebone/barebox.env/config-board
@@ -0,0 +1,4 @@ 
+#!/bin/sh
+
+global.boot.default=sd
+
diff --git a/configs/beaglebone_barebox_defconfig b/configs/beaglebone_barebox_defconfig
new file mode 100644
index 0000000..6324dbf
--- /dev/null
+++ b/configs/beaglebone_barebox_defconfig
@@ -0,0 +1,41 @@ 
+# architecture
+BR2_arm=y
+BR2_cortex_a8=y
+BR2_ARM_EABIHF=y
+
+# system
+BR2_TARGET_GENERIC_HOSTNAME="beaglebone"
+BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_DEVTMPFS=y
+BR2_TARGET_GENERIC_GETTY_PORT="ttyO0"
+# BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW is not set
+# BR2_ROOTFS_POST_IMAGE_SCRIPT is not set
+
+# filesystem
+BR2_PACKAGE_AM33X_CM3=y
+BR2_TARGET_ROOTFS_EXT2=y
+# BR2_TARGET_ROOTFS_TAR is not set
+
+# Linux headers same as kernel, a 4.4 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_4=y
+
+# bootloader
+BR2_TARGET_BAREBOX=y
+BR2_TARGET_BAREBOX_BOARD_DEFCONFIG="am335x"
+BR2_TARGET_BAREBOX_BUILT_IMAGE_FILE="barebox-am33xx-beaglebone.img"
+BR2_TARGET_BAREBOX_CUSTOM_ENV=y
+BR2_TARGET_BAREBOX_CUSTOM_ENV_PATH="board/beaglebone/barebox.env"
+BR2_TARGET_BAREBOX_2=y
+BR2_TARGET_BAREBOX_2_BOARD_DEFCONFIG="am335x_mlo"
+BR2_TARGET_BAREBOX_2_BUILT_IMAGE_FILE="barebox-am33xx-beaglebone-mlo.img"
+BR2_TARGET_BAREBOX_2_OUTPUT_IMAGE_FILE="MLO"
+
+# kernel
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.4.6"
+BR2_LINUX_KERNEL_USE_DEFCONFIG=y
+BR2_LINUX_KERNEL_DEFCONFIG="omap2plus"
+BR2_LINUX_KERNEL_ZIMAGE=y
+
+# Use the barebox built-in dtb
+# BR2_LINUX_KERNEL_DTS_SUPPORT is not set