Reintroduce the possibility to force an architecture

Among other things, 36459f3 ([archiso] Drop aitab support, 2014-06-28)
removed the possibility to manually set a specific architecture by using
kernel parameters. This, however, is useful, e.g. when installing Arch
Linux on a device that reports itself as i586 but works fine with the
i686 flavor.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/archiso/initcpio/hooks/archiso b/archiso/initcpio/hooks/archiso
index 26bdedc..4c50566 100644
--- a/archiso/initcpio/hooks/archiso
+++ b/archiso/initcpio/hooks/archiso
@@ -101,7 +101,7 @@ _verify_checksum() {
 }
 
 run_hook() {
-    arch="$(uname -m)"
+    [[ -z "${arch}" ]] && arch="$(uname -m)"
     [[ -z "${cowspace_size}" ]] && cowspace_size="75%"
     [[ -z "${copytoram_size}" ]] && copytoram_size="75%"
     [[ -z "${archisobasedir}" ]] && archisobasedir="arch"