mirror of
git://git.yoctoproject.org/meta-raspberrypi.git
synced 2025-07-04 20:54:46 +02:00
95a9103f91
* current aarch64 kernel image alone is 24MB: 24M tmp-glibc/deploy/images/raspberrypi4-64/Image-raspberrypi4-64-1-6.1.77+git0+43d1723dbe_77fc1fbcb5-r0.1-20110405230000.bin and with rpi-bootfiles it takes around 46MB (e.g. this is from kirkstone raspberrypi4-64 build): 2.0K boot.scr 2.0K cmdline.txt 4.0K fixup4cd.dat 4.0K fixup_cd.dat 4.0K uEnv.txt 6.0K fixup4.dat 8.0K fixup.dat 10K fixup4db.dat 10K fixup4x.dat 10K fixup_db.dat 10K fixup_x.dat 16K uboot.env 36K config.txt 52K bcm2711-rpi-4-b.dtb 52K bcm2711-rpi-400.dtb 52K bcm2711-rpi-cm4.dtb 52K bootcode.bin 126K overlays 558K kernel8.img 786K start4cd.elf 786K start_cd.elf 2.2M start4.elf 2.9M start.elf 2.9M start4x.elf 3.6M start4db.elf 3.6M start_x.elf 4.6M start_db.elf 23M Image * it is increased automatically to fit the content: tmp-glibc/deploy/images/raspberrypi4-64 $ sfdisk -l core-image-minimal-raspberrypi4-64.rootfs--1.0-r0-20110405230000.wic Disk core-image-minimal-raspberrypi4-64.rootfs--1.0-r0-20110405230000.wic: 241.2 MiB, 252915712 bytes, 493976 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x076c4a2a Device Boot Start End Sectors Size Id Type core-image-minimal-raspberrypi4-64.rootfs--1.0-r0-20110405230000.wic1 * 8192 157815 149624 73.1M c W95 FAT32 (LBA) core-image-minimal-raspberrypi4-64.rootfs--1.0-r0-20110405230000.wic2 163840 493975 330136 161.2M 83 Linux but if you want to update the kernel in place or add some additional files later, it might not be big enough, increase the minimal size from 20M to 100M * reminder (as I forgot about it before): "--size" is just minimum https://docs.yoctoproject.org/ref-manual/kickstart.html says: --size: The minimum partition size. Specify as an integer value optionally followed by one of the units “k” / “K” for kibibyte, “M” for mebibyte and “G” for gibibyte. The default unit if none is given is “M”. You do not need this option if you use --source. --fixed-size: The exact partition size. Specify as an integer value optionally followed by one of the units “k” / “K” for kibibyte, “M” for mebibyte and “G” for gibibyte. The default unit if none is given is “M”. Cannot be specify together with --size. An error occurs when assembling the disk image if the partition data is larger than --fixed-size. Signed-off-by: Martin Jansa <martin.jansa@gmail.com> |
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| .github | ||
| classes | ||
| conf | ||
| docs | ||
| dynamic-layers | ||
| files/custom-licenses | ||
| img | ||
| lib/oeqa/runtime/cases | ||
| recipes-bsp | ||
| recipes-connectivity | ||
| recipes-core | ||
| recipes-devtools | ||
| recipes-graphics | ||
| recipes-kernel | ||
| recipes-multimedia | ||
| recipes-sato | ||
| wic | ||
| .gitignore | ||
| .readthedocs.yaml | ||
| COPYING.MIT | ||
| kas-poky-rpi.yml | ||
| README.md | ||
meta-raspberrypi
Yocto BSP layer for the Raspberry Pi boards - http://www.raspberrypi.org/.
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Sponsored by:
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Quick links
- Git repository web frontend: https://github.com/agherzan/meta-raspberrypi
- Mailing list (yocto mailing list): yocto@lists.yoctoproject.org
- Issues management (Github Issues): https://github.com/agherzan/meta-raspberrypi/issues
- Documentation: http://meta-raspberrypi.readthedocs.io/en/latest/
Description
This is the general hardware specific BSP overlay for the RaspberryPi device.
More information can be found at: http://www.raspberrypi.org/ (Official Site)
The core BSP part of meta-raspberrypi should work with different OpenEmbedded/Yocto distributions and layer stacks, such as:
- Distro-less (only with OE-Core).
- Yoe Disto (Video and Camera Products).
- Yocto/Poky (main focus of testing).
Yocto Project Compatible Layer
This layer is officially approved as part of the Yocto Project Compatible Layers Program. You can find details of that on the official Yocto Project
website.
Dependencies
This layer depends on:
- URI: git://git.yoctoproject.org/poky
- branch: master
- revision: HEAD
Quick Start
- source poky/oe-init-build-env rpi-build
- Add this layer to bblayers.conf and the dependencies above
- Set MACHINE in local.conf to one of the supported boards
- bitbake core-image-base
- Use bmaptool to copy the generated .wic.bz2 file to the SD card
- Boot your RPI
Quick Start with kas
- Install kas build tool from PyPi (sudo pip3 install kas)
- kas build meta-raspberrypi/kas-poky-rpi.yml
- Use bmaptool to copy the generated .wic.bz2 file to the SD card
- Boot your RPI
To adjust the build configuration with specific options (I2C, SPI, ...), simply add a section as follows:
local_conf_header:
rpi-specific: |
ENABLE_I2C = "1"
RPI_EXTRA_CONFIG = "dtoverlay=pi3-disable-bt"
To configure the machine, you have to update the machine variable.
And the same for the distro.
For further information, you can read more at https://kas.readthedocs.io/en/latest/index.html
Contributing
You can send patches using the GitHub pull request process or/and through the Yocto mailing list. Refer to the documentation for more information.
Maintainers
- Andrei Gherzan
<andrei at gherzan.com>