AM4378: How to create .cpio file

Hi Jason,

as outlined in the referenced FAQ the cpio image is generated by way of `tisdk-tiny-image` bitbake target. I just tried it out for the am335x-evm platform, the same should apply to your am437x-evm platform. You can see from the build output folder how the tisdk-tiny-image-am335x-evm-20230627204914.rootfs.cpio image file was created which is suitable for RAM disk boot.

a0797059@dasso:~/tisdk/am335x-evm/build (master)
$ MACHINE=am335x-evm bitbake -k tisdk-tiny-image
NOTE: Started PRServer with DBfile: /home/a0797059/tisdk/am335x-evm/build/cache/prserv.sqlite3, IP: 127.0.0.1, PORT: 42855, PID: 162448
Loading cache: 100% |###############################################################################################################################################################################| Time: 0:00:00
Loaded 4129 entries from dependency cache.
NOTE: Resolving any missing task queue dependencies

Build Configuration:
BB_VERSION           = "1.46.0"
BUILD_SYS            = "x86_64-linux"
NATIVELSBSTRING      = "ubuntu-22.04"
TARGET_SYS           = "arm-linux-gnueabi"
MACHINE              = "am335x-evm"
DISTRO               = "arago"
DISTRO_VERSION       = "2021.09"
TUNE_FEATURES        = "arm armv7a vfp thumb neon callconvention-hard"
TARGET_FPU           = "hard"
meta-processor-sdk   = "HEAD:479b10537b422694df4b9bac9c1b39d8cf9d39c5"
meta-arago-distro
meta-arago-extras    = "HEAD:382ca36beb21a524de726bfd1c57e3d26f10cf82"
meta-qt5             = "HEAD:4a59d5c95506b0b6810fce99b0c72a42676be70c"
meta-virtualization  = "HEAD:c5f61e547b90aa8058cf816f00902afed9c96f72"
meta-networking
meta-python
meta-oe
meta-gnome
meta-filesystems     = "HEAD:0722ff6f021df91542b5efa1ff5b5f6269f66add"
meta-ti              = "HEAD:facd5397cdc5c35c69e7a8e8f908a98a5c23d270"
meta-arm
meta-arm-toolchain   = "HEAD:c4f04f3fb66f8f4365b08b553af8206372e90a63"
meta                 = "HEAD:51844f2d60d77fb8cb46ffe460402f76ae216ca5"

Initialising tasks: 100% |##########################################################################################################################################################################| Time: 0:00:02
Sstate summary: Wanted 19 Found 0 Missed 19 Current 529 (0% match, 96% complete)
NOTE: Executing Tasks
NOTE: Tasks Summary: Attempted 1959 tasks of which 1908 didn't need to be rerun and all succeeded.
NOTE: Writing buildhistory
NOTE: Writing buildhistory took: 1 seconds
a0797059@dasso:~/tisdk/am335x-evm/build (master)
$ ll arago-tmp-external-arm-glibc/deploy/images/am335x-evm/ | grep tiny
-rw-r--r-- 2 a0797059 a0797059   4627968 Jun 27 15:49 tisdk-tiny-image-am335x-evm-20230627204914.rootfs.cpio
-rw-r--r-- 2 a0797059 a0797059   1638560 Jun 27 15:49 tisdk-tiny-image-am335x-evm-20230627204914.rootfs.cpio.xz
-rw-r--r-- 2 a0797059 a0797059      1828 Jun 27 15:49 tisdk-tiny-image-am335x-evm-20230627204914.rootfs.manifest
-rw-r--r-- 2 a0797059 a0797059   1667300 Jun 27 15:49 tisdk-tiny-image-am335x-evm-20230627204914.rootfs.tar.xz
-rw-r--r-- 2 a0797059 a0797059        91 Jun 27 15:49 tisdk-tiny-image-am335x-evm-20230627204914.rootfs.tar.xz.md5
-rw-r--r-- 2 a0797059 a0797059   5373952 Jun 27 15:49 tisdk-tiny-image-am335x-evm-20230627204914.rootfs.ubi
-rw-r--r-- 2 a0797059 a0797059   4952064 Jun 27 15:49 tisdk-tiny-image-am335x-evm-20230627204914.rootfs.ubifs
-rw-r--r-- 2 a0797059 a0797059      3570 Jun 27 15:49 tisdk-tiny-image-am335x-evm-20230627204914.rootfs.wic.bmap
-rw-r--r-- 2 a0797059 a0797059   7009736 Jun 27 15:49 tisdk-tiny-image-am335x-evm-20230627204914.rootfs.wic.xz
-rw-r--r-- 2 a0797059 a0797059    370606 Jun 27 15:49 tisdk-tiny-image-am335x-evm-20230627204914.testdata.json
lrwxrwxrwx 2 a0797059 a0797059        54 Jun 27 15:49 tisdk-tiny-image-am335x-evm.cpio -> tisdk-tiny-image-am335x-evm-20230627204914.rootfs.cpio
lrwxrwxrwx 2 a0797059 a0797059        57 Jun 27 15:49 tisdk-tiny-image-am335x-evm.cpio.xz -> tisdk-tiny-image-am335x-evm-20230627204914.rootfs.cpio.xz
lrwxrwxrwx 2 a0797059 a0797059        58 Jun 27 15:49 tisdk-tiny-image-am335x-evm.manifest -> tisdk-tiny-image-am335x-evm-20230627204914.rootfs.manifest
lrwxrwxrwx 2 a0797059 a0797059        56 Jun 27 15:49 tisdk-tiny-image-am335x-evm.tar.xz -> tisdk-tiny-image-am335x-evm-20230627204914.rootfs.tar.xz
lrwxrwxrwx 2 a0797059 a0797059        60 Jun 27 15:49 tisdk-tiny-image-am335x-evm.tar.xz.md5 -> tisdk-tiny-image-am335x-evm-20230627204914.rootfs.tar.xz.md5
lrwxrwxrwx 2 a0797059 a0797059        56 Jun 27 15:49 tisdk-tiny-image-am335x-evm.testdata.json -> tisdk-tiny-image-am335x-evm-20230627204914.testdata.json
lrwxrwxrwx 2 a0797059 a0797059        53 Jun 27 15:49 tisdk-tiny-image-am335x-evm.ubi -> tisdk-tiny-image-am335x-evm-20230627204914.rootfs.ubi
lrwxrwxrwx 2 a0797059 a0797059        55 Jun 27 15:49 tisdk-tiny-image-am335x-evm.ubifs -> tisdk-tiny-image-am335x-evm-20230627204914.rootfs.ubifs
lrwxrwxrwx 2 a0797059 a0797059        58 Jun 27 15:49 tisdk-tiny-image-am335x-evm.wic.bmap -> tisdk-tiny-image-am335x-evm-20230627204914.rootfs.wic.bmap
lrwxrwxrwx 2 a0797059 a0797059        56 Jun 27 15:49 tisdk-tiny-image-am335x-evm.wic.xz -> tisdk-tiny-image-am335x-evm-20230627204914.rootfs.wic.xz
-rw-rw-r-- 2 a0797059 a0797059      6685 Jun 27 15:49 tisdk-tiny-image.env
-rw-r--r-- 2 a0797059 a0797059       302 Jun 27 15:49 ubinize-tisdk-tiny-image-am335x-evm-20230627204914.cfg

Regards, Andreas

Hi! Andreas,

Thanks for your help! Problem resolved! 

Best Regards,

Jason Chyan