RM-7673 create new configuration arm_cortexm_sdk_lite_defconfig#10
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vdskvortsov wants to merge 6 commits intoemcraft-fdpic-2022.08.xfrom
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RM-7673 create new configuration arm_cortexm_sdk_lite_defconfig#10vdskvortsov wants to merge 6 commits intoemcraft-fdpic-2022.08.xfrom
vdskvortsov wants to merge 6 commits intoemcraft-fdpic-2022.08.xfrom
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Add BR2_KERNEL_HEADERS_6_12 option and BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_12 to support Linux 6.12.x kernel headers in the toolchain build. Add arm_cortexm_sdk_lite_defconfig — a lightweight SDK configuration without aktualizr, libostree, boost, and their dependencies. Suitable for general-purpose development with the Emcraft uClinux BSP.
Enable BR2_PACKAGE_BUSYBOX and BR2_PACKAGE_BUSYBOX_SHOW_OTHERS to build busybox and allow standalone i2c-tools alongside busybox applets. Add BR2_PACKAGE_I2C_TOOLS and BR2_PACKAGE_TSLIB. Remove BR2_PACKAGE_LIBTIRPC (unused on noMMU targets with kernel >= 2.6.23).
Enable BR2_PACKAGE_DROPBEAR for SSH server support via inetd. Add openssh-sftp-server package -- a minimal buildroot package that builds only sftp-server from OpenSSH 9.1p1. Key design decisions: - Built with --without-openssl to avoid libssl/libcrypto dependency (sftp-server runs inside an already-encrypted dropbear session) - Uses -ffunction-sections/-fdata-sections with --gc-sections to drop unreferenced code from libssh.a (notably misc.c:subprocess() which calls fork() and would fail to link on noMMU targets)
lshw allocates large buffers during hardware enumeration that exceed the noMMU heap on RT1170. The package builds but the binary cannot run usefully on the target, so it has no place in either the lite or the full SDK output.
The rootfs project's initramfs does not stage bzip2, jq, openssl, libcurl, expat, urandom-scripts, util-linux (libblkid/libuuid), or the rootfs tarball -- rfs-builder reads target/ directly. Building them only inflates the SDK without affecting the deployed image. Drop them. The remaining set -- busybox, gdb, i2c-tools, libubootenv, tslib, dropbear, openssh-sftp-server -- covers everything the rootfs initramfs actually places in the image.
* BR2_KERNEL_HEADERS_5_15 -> BR2_KERNEL_HEADERS_6_12 to match the
shipped Linux 6.12.20 kernel
* Enable BR2_PACKAGE_BUSYBOX (was disabled, which made
BUSYBOX_OVERRIDE_SRCDIR / BUSYBOX_CONFIG_FILE written to local.mk
by the consuming project inert)
* Add BR2_PACKAGE_BUSYBOX_SHOW_OTHERS, I2C_TOOLS, TSLIB, DROPBEAR,
OPENSSH_SFTP_SERVER -- parity with sdk_lite
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New configuration to build a mininal set of packages to be included to the rootfs project when the buildroot will be integrated to the common EmCraft build subsystem. Support for kernel header 6.12 from the EmCraft's distro.