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Richard Purdie a5b7c86f23 kernel: Ensure an initramfs is added if configured
If ${DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE_NAME}.cpio does not exist,
nor any of the compressed variants, nothing is copied to kernel build's
./usr directory.

The code does not fail, but silently proceeds without a bundled initramfs.

Change to fail and tell the user something is wrong.

Also, if an initramfs is found, contrary to the comments, it does not stop
at the first uncompressed/compressed cpio image found. Instead it keeps
processing all so the last is used. Fix this to behave as per the comments.

[YOCTO #12909]

(Patch by Leon Woestenberg)

(From OE-Core rev: 5b5604e288af755eb5553a97d26533445b2cf94b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2019-02-25 10:43:06 +00:00
2018-02-24 10:31:45 +00:00

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 only)
  * 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.
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