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Enrico Scholz
edcf39820f
It can be useful to have multiple partitions with '--source bootimg-partition'
but different content.
E.g. for TI AM335x, one boot partition can contain an first stage
bootloader ("MLO"), while the real bootloader and kernel plus devicetree
are in another one.
Patch allows to specify multiple IMAGE_BOOT_FILES with optional "_label-XXX"
or "_uuid-XXX" overrides.
E.g. with this patch, a .wks file with
| part --source bootimg-partition ... --label=mlo --active
| part --source bootimg-partition ... --label=boot0
| part --source bootimg-partition ... --label=boot1
and a recipe with
| IMAGE_BOOT_FILES_label-mlo = "\
| MLO-${MACHINE}.img;MLO \
| "
|
| IMAGE_BOOT_FILES_label-boot0 = "\
| u-boot-${MACHINE}.img;u-boot.img \
| zImage \
| "
|
| IMAGE_BOOT_FILES_label-boot1 = "${IMAGE_BOOT_FILES_label-boot0}"
|
| WICVARS += " \
| IMAGE_BOOT_FILES_label-mlo \
| IMAGE_BOOT_FILES_label-boot0 \
| IMAGE_BOOT_FILES_label-boot1 \
| "
is possible. It will create one partition with the MLO and two redundant
ones with the uboot + kernel.
(From OE-Core rev: 8c1dec627e9735260516fe8f0b2bfdb0ee70172b)
Signed-off-by: Enrico Scholz <enrico.scholz@ensc.de>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
QEMU Emulation Targets ====================== To simplify development, the build system supports building images to work with the QEMU emulator in system emulation mode. Several architectures are currently supported in 32 and 64 bit variants: * ARM (qemuarm + qemuarm64) * x86 (qemux86 + qemux86-64) * PowerPC (qemuppc + qemuppc64) * MIPS (qemumips + qemumips64) Use of the QEMU images is covered in the Yocto Project Reference Manual. The appropriate MACHINE variable value corresponding to the target is given in brackets.