[Buildroot] [PATCH] board: Add support for Acmesystems Arietta g25

Peter Korsgaard peter at korsgaard.com
Tue Feb 2 11:20:31 UTC 2016


>>>>> "Angelo" == Angelo Compagnucci <angelo.compagnucci at gmail.com> writes:

 > This patch adds a minimal working configuration for
 > Acmesystems Arietta g25

 > Signed-off-by: Angelo Compagnucci <angelo.compagnucci at gmail.com>

Thanks, see below for a few comments.

 > ---
 >  board/acmesystems/arietta-g25/readme.txt        | 50 +++++++++++++++++++++++++
 >  configs/acmesystems_arietta_g25_128mb_defconfig | 23 ++++++++++++
 >  configs/acmesystems_arietta_g25_256mb_defconfig | 23 ++++++++++++
 >  3 files changed, 96 insertions(+)
 >  create mode 100644 board/acmesystems/arietta-g25/readme.txt
 >  create mode 100644 configs/acmesystems_arietta_g25_128mb_defconfig
 >  create mode 100644 configs/acmesystems_arietta_g25_256mb_defconfig

 > diff --git a/board/acmesystems/arietta-g25/readme.txt b/board/acmesystems/arietta-g25/readme.txt
 > new file mode 100644
 > index 0000000..bccdb61
 > --- /dev/null
 > +++ b/board/acmesystems/arietta-g25/readme.txt
 > @@ -0,0 +1,50 @@
 > +Build instructions
 > +==================
 > +
 > +As a regular user configure and then build:
 > +
 > +$ make acmesystems_arietta_g25_128mb_defconfig (128MB RAM variant)
 > +  or...
 > +$ make acmesystems_arietta_g25_256mb_defconfig (256MB RAM variant)

It's a pity that we need two different configurations when they are so
similar. It's been a few years since I've used at91bootstrap, I take it
that doesn't have any sdram size detection logic like U-Boot has
nowadays? (get_ram_size()).


> +$ make
 > +
 > +Writing to the MicroSD card
 > +===========================
 > +
 > +You'll need a blank MicroSD (obviously) initialized
 > +in a particular way to be able to boot from it.
 > +
 > +Assuming the card is seen as /dev/sdb in your PC/laptop/other device
 > +you'll need to run the following commands as root or via sudo.
 > +
 > +Make sure all of the card partitions are unmounted before starting.
 > +
 > +First we'll need to create two partitions:
 > +
 > +# sfdisk -uM /dev/sdb <<EOF
 > +,32,6
 > +;
 > +EOF
 > +
 > +Then we'll need to create the empty filesystems:
 > +
 > +# mkdosfs -n SD_BOOT /dev/sdb1
 > +# mkfs.ext4 -L SD_ROOT /dev/sdb2
 > +
 > +We'll populate the first partition (boot) with the relevant files:
 > +
 > +# mount /dev/sdb1 /mnt
 > +# cp output/images/at91bootstrap.bin /mnt/BOOT.BIN
 > +# cp output/images/zImage /mnt
 > +# cp output/images/at91-ariag25.dtb /mnt
 > +# umount /mnt
 > +
 > +And the root filesystem afterwards:
 > +
 > +# mount /dev/sdb2 /mnt
 > +# tar -C /mnt output/images/rootfs.tar
 > +# umount /mnt
 > +
 > +You're done, insert the MicroSD card in the slot and enjoy.

Could you convert this to genimage instead of all these manual steps?
Have a look at board/orangepi/orangepipc/genimage.cfg for an example.

Thanks!

-- 
Bye, Peter Korsgaard


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