| Message ID | 1458808152-15778-4-git-send-email-ludovic.desroches@atmel.com |
|---|---|
| State | Superseded |
| Headers | show |
Hello, On Thu, 24 Mar 2016 09:29:12 +0100, Ludovic Desroches wrote: > This documentation is not only dedicated to SAMA5D3 Xplained boards. The > procedure is the same for SAMA5D4 and SAMA5D2. > sfdisk, -u (--unit) option is obsolete on latest versions. > > Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> > --- > board/atmel/xplained/readme.txt | 23 ++++++++++++----------- > 1 file changed, 12 insertions(+), 11 deletions(-) There is some duplication of information between board/atmel/readme.txt (which also covers SAMA5 Xplained platforms) and board/atmel/xplained/readme.txt. Perhaps board/atmel/xplained/readme.txt should be removed entirely, and board/atmel/readme.txt contain all the information? Seems like board/atmel/readme.txt covers how to flash on NAND, while board/atmel/xplained/readme.txt covers how to use a SD card based booting. Definitely not very clear when looking at the readme.txt location. Another possible (but future, and unrelated) improvement is to use genimage to generate a ready-to-use SD card image, which automatically contains the VFAT and ext4 partitions. Thanks! Thomas
Hi, On Thu, Mar 24, 2016 at 09:44:36AM +0100, Thomas Petazzoni wrote: > Hello, > > On Thu, 24 Mar 2016 09:29:12 +0100, Ludovic Desroches wrote: > > This documentation is not only dedicated to SAMA5D3 Xplained boards. The > > procedure is the same for SAMA5D4 and SAMA5D2. > > sfdisk, -u (--unit) option is obsolete on latest versions. > > > > Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> > > --- > > board/atmel/xplained/readme.txt | 23 ++++++++++++----------- > > 1 file changed, 12 insertions(+), 11 deletions(-) > > There is some duplication of information between board/atmel/readme.txt > (which also covers SAMA5 Xplained platforms) and > board/atmel/xplained/readme.txt. > I agree. > Perhaps board/atmel/xplained/readme.txt should be removed entirely, and > board/atmel/readme.txt contain all the information? > > Seems like board/atmel/readme.txt covers how to flash on NAND, while > board/atmel/xplained/readme.txt covers how to use a SD card based > booting. Definitely not very clear when looking at the readme.txt > location. > I will try to do a quick merge. > Another possible (but future, and unrelated) improvement is to use > genimage to generate a ready-to-use SD card image, which automatically > contains the VFAT and ext4 partitions. > We have some scripts which do this but at the moment I am not sure they can handle all possible errors. For sure, it will be great if we can achieve it in the future. Regards Ludovic
Hello, On Thu, 24 Mar 2016 10:40:06 +0100, Ludovic Desroches wrote: > > Another possible (but future, and unrelated) improvement is to use > > genimage to generate a ready-to-use SD card image, which automatically > > contains the VFAT and ext4 partitions. > > We have some scripts which do this but at the moment I am not sure they > can handle all possible errors. For sure, it will be great if we can > achieve it in the future. There's no real need for a script, genimage does most of the work. Look at board/acmesystems/arietta-g25/genimage.cfg and board/acmesystems/arietta-g25/post-image.sh, which are doing this for an Atmel based platform. Thomas
On Thu, Mar 24, 2016 at 10:52:36AM +0100, Thomas Petazzoni wrote: > Hello, > > On Thu, 24 Mar 2016 10:40:06 +0100, Ludovic Desroches wrote: > > > > Another possible (but future, and unrelated) improvement is to use > > > genimage to generate a ready-to-use SD card image, which automatically > > > contains the VFAT and ext4 partitions. > > > > We have some scripts which do this but at the moment I am not sure they > > can handle all possible errors. For sure, it will be great if we can > > achieve it in the future. > > There's no real need for a script, genimage does most of the work. Look > at board/acmesystems/arietta-g25/genimage.cfg and > board/acmesystems/arietta-g25/post-image.sh, which are doing this for > an Atmel based platform. > Interesting, thank for the tip. Regards Ludovic
diff --git a/board/atmel/xplained/readme.txt b/board/atmel/xplained/readme.txt index ba45122..4833e72 100644 --- a/board/atmel/xplained/readme.txt +++ b/board/atmel/xplained/readme.txt @@ -1,9 +1,8 @@ -Atmel SAMA5D3 Xplained board -============================ +Atmel SAMA5Dx Xplained boards +============================= This document explains how to set up a basic Buildroot system on the -Atmel SAMA5D3 Xplained board, whose main site is -http://www.atmel.com/tools/ATSAMA5D3-XPLD.aspx. Additional details can +Atmel SAMA5D2/SAMA5D3/SAMA5D4 Xplained boards. Additional details can also be found on the http://www.at91.com/linux4sam/bin/view/Linux4SAM/ web site. @@ -16,7 +15,9 @@ from NAND flash, see board/atmel/readme.txt Configuring and building Buildroot ---------------------------------- - make atmel_sama5d3_xplained_mmc_defconfig +Use the alternative mmc defconfig for you board. For instance: + + make atmel_sama5d2_xplained_mmc_defconfig make Preparing the SD card @@ -27,8 +28,8 @@ FAT16 partition for the bootloaders, kernel image and Device Tree blob, and one ext4 partition for the root filesystem. To partition the SD card: -sudo sfdisk -uM /dev/mmcblk0 <<EOF -,64,6 +sudo sfdisk /dev/mmcblk0 <<EOF +,64MiB,6 ; EOF @@ -52,10 +53,10 @@ sudo mount /dev/mmcblk0p2 /media/rootfs Copy the bootloaders, kernel image and Device Tree blob to the first partition: -cp output/images/u-boot-spl.bin /media/boot/boot.bin -cp output/images/u-boot.img /media/boot/u-boot.img -cp output/images/zImage /media/boot/zImage -cp output/images/at91-sama5d3_xplained.dtb /media/boot/at91-sama5d3_xplained.dtb +cp output/images/boot.bin /media/boot/ +cp output/images/u-boot.bin /media/boot/ +cp output/images/zImage /media/boot/ +cp output/images/at91-sama5d2_xplained.dtb /media/boot/ Extract the root filesystem to the second partition:
This documentation is not only dedicated to SAMA5D3 Xplained boards. The procedure is the same for SAMA5D4 and SAMA5D2. sfdisk, -u (--unit) option is obsolete on latest versions. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> --- board/atmel/xplained/readme.txt | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-)