Buildroot BeaglePlay labs#331
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Add Buildroot training labs targeting the BeaglePlay board (TI AM625x, AArch64/Cortex-A53), following the same pattern as the existing BBB and STM32MP1 variants. New files: - labs/buildroot-basic-beagleplay: Board setup, Buildroot configuration (AArch64, Bootlin aarch64 toolchain, kernel defconfig, U-Boot am62x_evm_a53, TF-A), build and boot instructions - labs/buildroot-rootfs-beagleplay: Root filesystem customization using Ethernet networking, Nunchuk on I2C3 (mikroBUS connector), kernel patches and defconfig management - common/beagleplay-sdcard-preparation.tex: SD card partitioning for the AM62x boot flow (FAT32 boot + ext4 rootfs) - common/buildroot-beagleplay-labs-vars.tex: Board variables - lab-data/buildroot-beagleplay/: Pre-built tiboot3.bin, Nunchuk driver patch, BeaglePlay DTS patch (I2C3), nInvaders joystick patch, sample app Modified: - mk/buildroot.mk: Add BUILDROOT_BEAGLEPLAY_LABS chapter list This enables the following new make targets: make full-buildroot-beagleplay-labs.pdf make buildroot-beagleplay-labs.tar.xz
- Add buildroot-appdev-beagleplay lab: uses aarch64-linux-gcc/gdb and Ethernet IP 192.168.0.100 instead of arm-linux-gcc and USB gadget - Add buildroot-advanced-beagleplay lab: BR2_EXTERNAL tree references board/bootlin/beagleplay/ paths, genimage section adapted for AM62x boot images (tiboot3.bin, tispl.bin, u-boot.img, Image, DTB) - Update BUILDROOT_BEAGLEPLAY_LABS to use all board-specific labs - Add shopping-list-beagleplay to buildroot slides - Include buildroot in beagleplay-nunchuk training list for shopping list slide
- Add buildroot-new-packages-beagleplay: change "built for ARM" to "built for AArch64" - Add buildroot-advanced-packages-beagleplay: use aarch64-linux-readelf instead of arm-linux-readelf - Update BUILDROOT_BEAGLEPLAY_LABS to use all board-specific lab variants (no shared BBB labs remain) - Rewrite beagleplay-sdcard-preparation.tex to match the style of boneblack-sdcard-preparation.tex (enumerate structure, \code macros, option explanations) - Improve DTS patch: use proper node name (joystick@52), realistic commit message format, correct arm64 path prefix - Add buildroot to nunchuk training list in shopping-list-beagleplay .tex (LaTeX fallback version)
Instead of having Buildroot build the full TI K3 boot chain (ATF, OP-TEE, ti-k3-boot-firmware, binman), which requires complex configuration and TI's downstream U-Boot fork, simplify by: - Providing both tiboot3.bin and tispl.bin as pre-built binaries - Only building u-boot.img through Buildroot - Using BINMAN_ALLOW_MISSING=1 custom make option to let U-Boot build complete without the first-stage firmware blobs This approach is more reliable for students and avoids dependency on TI-specific firmware that may change between releases. The lab explains what each binary does and points to the Embedded Linux course for those who want to build the full chain. Also fixes: trailing dots on commands, tispl.bin_unsigned references, and adds tispl.bin to lab-data.
- Add mtools to required packages (needed for genimage) - Fix bar package version: v1.0 → v1.1, bar-1.0.tar.xz → bar-1.1.tar.gz - Fix readelf path: output/host/usr/bin → output/host/bin - Fix DTS patch node name consistency
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Added practical labs and lab data for BeaglePlay
Added BeaglePlay shopping list slide into slides