[gnome-continuous-yocto/gnomeostree-3.28-rocko: 7845/8267] core-image-tiny-initramfs: Enable running poky-tiny on qemux86-64

[Emmanuele Bassi <ebassi src gnome org>]

commit 1c3b1aee145135cc6735aaeef3151e3e23423a71
Author: Alejandro Hernandez <alejandro hernandez linux intel com>
Date:   Wed Sep 20 10:17:13 2017 -0700

    core-image-tiny-initramfs: Enable running poky-tiny on qemux86-64
    
    Building poky-tiny for x86-64 seems fine, but when executing qemu
    it complains during boot time about not being able to execute init:
    
    [    5.409730] Failed to execute /init (error -8)
    
    And then it drops to a login prompt (which it should't do on tiny)
    
    This is supposed to be complaining about init's format, it only happens
    on x86-64 architectures so perhaps is a 32/64 bit issue, but since
    core-image-tiny-initramfs does not actually provide a traditional init,
    the script is simply meant to drop to shell, we can workaround the issue
    by specifying the kernel to run the init script via busybox's sh,
    dropping to shell correctly on x86-64 leaving x86 unaffected.
    
    (From OE-Core rev: f15de8cf177f8f736c180c1dcaa942a9931865d4)
    
    Signed-off-by: Alejandro Hernandez <alejandro hernandez linux intel com>
    Signed-off-by: Ross Burton <ross burton intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 .../images/core-image-tiny-initramfs.bb            |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/meta/recipes-core/images/core-image-tiny-initramfs.bb 
b/meta/recipes-core/images/core-image-tiny-initramfs.bb
index a8893d1..16995e6 100644
--- a/meta/recipes-core/images/core-image-tiny-initramfs.bb
+++ b/meta/recipes-core/images/core-image-tiny-initramfs.bb
@@ -39,3 +39,5 @@ python tinyinitrd () {
 }
 
 IMAGE_PREPROCESS_COMMAND += "tinyinitrd;"
+
+QB_KERNEL_CMDLINE_APPEND += "debugshell=3 init=/bin/busybox sh init"