yocto engicam meta layer
Default parameter built for engicam starterkit. Image available for SODIMM and RQS6Q7 standards modules. Please refer to engicam board user manual for setup a different board.
Engicam availbale machine are:
icoreM6duallite/icorem6dual/icorem6quad/icorem6solo/icorem6solo512 rqsm6dual/rqsm6duallight/rqsm6quad/rqsm6solo
Engicam images:
engicam-dev-fb-qt5 engicam-dev-fb-qt5-demo engicam-image-minimal-nand engicam-image-minimal-mtdutils engicam-image-gstreamer core-image-minimal
#Before start Before start remind to place the floder to this path in the virtual machine or to replace your meta-engicam previus folder
/home/user/yocto_daisy/fsl-community-bsp/sources/meta-engicam
After that remind to replace our engicam configuration script
cp /home/user/yocto_daisy/fsl-community-bsp/ sources/meta-engicam/tools/engicam-setup-environment /home/user/yocto_daisy/fsl-community-bsp/
#Building an image Create or open an existing build environment
MACHINE= sources engicam-setup-environment
Accept the license and then build the image
bitbake
The result of building process will be added in tmp/deploy/images/
#Flash on sdcard:
sudo dd if=imagename.sdcard of=/dev/sdXX bs=1M && sync
example: sudo dd if=engicam-image-gstreamer-icorem6solo.sdcard of=/dev/sdb bs=1M && sync
#Flash on nand
create and write an sdcard for nand programming with command:
bitbake engicam-image-minimal-mtdutils sudo dd if=engicam-image-minimal-mtdutils.sdcard of=/dev/sdb bs=1M && sync
after that, create a nand flash image , es. bitbake engicam-image-minimal-nand (remenber to set the UBOOT_CONFIG = "nand" on the machine file) and copy the files u-boot.bin, uImage, .dtb and rootfs.tar.bz2 in the sd card filesystem partition
boot the board by sdcard, at hte end of the boot run the program script:
prboot.sh prkernel.sh prfs.sh
Or following this instruction for having additional details about the writing procedure
#programming u-boot
pad the uboot image with the dd command:
dd if= u-boot.bin of=/mnt/u-boot_my.imx bs=512 seek=2
and flash it: flash_erase /dev/mtd0 0 0 kobs-ng init -v /mnt/u-boot_my.imx
#kernel programming flash_erase /dev/mtd1 0 0 nandwrite /dev/mtd1 -p uImage
#kernel device tree programming flash_erase /dev/mtd2 0 0 nandwrite /dev/mtd2 -p device_tree_file.dtb
#rootfs programming: ubiformat /dev/mtd3 ubiattach /dev/ubi_ctrl -m 3 ubimkvol /dev/ubi0 -N rootfs -s240000000 mkdir /rootfs mount -t ubifs ubi0:rootfs /rootfs tar xvf rootfs.tar.bz2 -C /rootfs sync
reboot the system by nand
#u-boot bootcmd SODIMM In the u-boot bootloader are available two default bootargs and bootcmd for run the kernel and read the filesystem from SD card or NAND memory. Type from the u-boot promt the command "run bootcmd_mmc" from read fs and kernel from the SD card or type run "bootcmd_ubi for" for read fs and kernel from nand.
If you build your YOCTO image in sd configuration you will atuomatically read it form sd otherwhise you will automatically read it from nand memory. But if you would like to switch you can stop in the u-boot prompt and switch between the two mode.
#u-boot bootcmd RQS6Q7 At the same time on RQS7Q7 modules you can switch between external SD card and internal eMMC memory. You can switch between the two mode by type in u-boot promt this two command "run bootcmd_mmc" and "run bootcmd_emmc" If you open or close the jumper you will automatically boot from external sd if you close the jumper and if you keep the jumper open by internal eMMC memory.
============ #Nand flash programming from u-boot
set mtdids 'nand0=gpmi-nand' set mtdparts 'mtdparts=gpmi-nand:4m(boot),8m(kernel),1m(dtb),-(rootfs)'
#uImage tftp 12000000 uImage nand erase 0x00400000 0x00800000 nand write 12000000 0x00400000 0x00800000
#DTB: tftp 12000000 uImage.dtb nand erase 0x00c00000 0x00100000 nand write 12000000 0x00c00000 0x00100000
#FS: nand erase.part rootfs tftp 12000000 rootfs.ubifs ubi part rootfs ubi create rootfs ubi write 12000000 rootfs ${filesize} ubifsmount ubi0:rootfs ubifsls
============ For all other information please refer to Engicam YOCTO BSP manual