qemuboot: write native sysroot of qemu-helper into qemuboot.conf

Native sysroot of qemu-helper contains all required tools
(qemu-system and tunctl atm) for runqemu to work. It's not
removed by rm_dir and should always exist. It makes sense
to write it into qemuboot.conf to make runqemu to use it
as a default directory for native tools.

This should also speed up runqemu as it doesn't need to run
to run 'bitbake qemu-helper -e' to get its native sysroot.

[YOCTO #11266]
[YOCTO #11193]

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 8 insertions, 1 deletions

diff --git a/meta/classes/qemuboot.bbclass b/meta/classes/qemuboot.bbclass
index 2870388dfb..cc5314e4ae 100644
--- a/meta/classes/qemuboot.bbclass
+++ b/meta/classes/qemuboot.bbclass
@@ -87,7 +87,14 @@ python do_write_qemuboot_conf() {
     cf = configparser.ConfigParser()
     cf.add_section('config_bsp')
     for k in qemuboot_vars(d):
-        cf.set('config_bsp', k, '%s' % d.getVar(k))
+        # qemu-helper-native sysroot is not removed by rm_work and
+        # contains all tools required by runqemu
+        if k == 'STAGING_BINDIR_NATIVE':
+            val = os.path.join(d.getVar('BASE_WORKDIR'), d.getVar('BUILD_SYS'),
+                               'qemu-helper-native/1.0-r1/recipe-sysroot-native/usr/bin/')
+        else:
+            val = d.getVar(k)
+        cf.set('config_bsp', k, '%s' % val)
 
     # QB_DEFAULT_KERNEL's value of KERNEL_IMAGETYPE is the name of a symlink
     # to the kernel file, which hinders relocatability of the qb conf.