1 files changed, 26 insertions, 0 deletions

diff --git a/meta/classes/kernel-arch.bbclass b/meta/classes/kernel-arch.bbclass
new file mode 100644
index 0000000000..92a6c982fb
--- /dev/null
+++ b/meta/classes/kernel-arch.bbclass
@@ -0,0 +1,26 @@
+#
+# set the ARCH environment variable for kernel compilation (including
+# modules). return value must match one of the architecture directories
+# in the kernel source "arch" directory
+#
+
+valid_archs = "alpha cris ia64 m68knommu ppc sh \
+               sparc64 x86_64 arm h8300 m32r mips \
+               ppc64 sh64 um arm26 i386 m68k \
+               parisc s390 sparc v850"
+
+def map_kernel_arch(a, d):
+        import bb, re
+
+        valid_archs = bb.data.getVar('valid_archs', d, 1).split()
+
+        if   re.match('(i.86|athlon)$', a):     return 'i386'
+        elif re.match('arm26$', a):             return 'arm26'
+        elif re.match('armeb$', a):             return 'arm'
+        elif re.match('powerpc$', a):           return 'ppc'
+        elif re.match('mipsel$', a):            return 'mips'
+        elif a in valid_archs:                  return a
+        else:
+                bb.error("cannot map '%s' to a linux kernel architecture" % a)
+
+export ARCH = "${@map_kernel_arch(bb.data.getVar('TARGET_ARCH', d, 1), d)}"