Squashed 'yocto-poky/' content from commit ea562de
git-subtree-dir: yocto-poky
git-subtree-split: ea562de57590c966cd5a75fda8defecd397e6436
diff --git a/meta/classes/kernel-arch.bbclass b/meta/classes/kernel-arch.bbclass
new file mode 100644
index 0000000..211b72b
--- /dev/null
+++ b/meta/classes/kernel-arch.bbclass
@@ -0,0 +1,59 @@
+#
+# 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 \
+ i386 x86 \
+ m68knommu m68k ppc powerpc powerpc64 ppc64 \
+ sparc sparc64 \
+ arm aarch64 \
+ m32r mips \
+ sh sh64 um h8300 \
+ parisc s390 v850 \
+ avr32 blackfin \
+ microblaze"
+
+def map_kernel_arch(a, d):
+ import re
+
+ valid_archs = d.getVar('valid_archs', True).split()
+
+ if re.match('(i.86|athlon|x86.64)$', a): return 'x86'
+ elif re.match('armeb$', a): return 'arm'
+ elif re.match('aarch64$', a): return 'arm64'
+ elif re.match('aarch64_be$', a): return 'arm64'
+ elif re.match('mips(el|64|64el)$', a): return 'mips'
+ elif re.match('p(pc|owerpc)(|64)', a): return 'powerpc'
+ elif re.match('sh(3|4)$', a): return 'sh'
+ elif re.match('bfin', a): return 'blackfin'
+ elif re.match('microblazee[bl]', a): return 'microblaze'
+ elif a in valid_archs: return a
+ else:
+ bb.error("cannot map '%s' to a linux kernel architecture" % a)
+
+export ARCH = "${@map_kernel_arch(d.getVar('TARGET_ARCH', True), d)}"
+
+def map_uboot_arch(a, d):
+ import re
+
+ if re.match('p(pc|owerpc)(|64)', a): return 'ppc'
+ elif re.match('i.86$', a): return 'x86'
+ return a
+
+export UBOOT_ARCH = "${@map_uboot_arch(d.getVar('ARCH', True), d)}"
+
+# Set TARGET_??_KERNEL_ARCH in the machine .conf to set architecture
+# specific options necessary for building the kernel and modules.
+TARGET_CC_KERNEL_ARCH ?= ""
+HOST_CC_KERNEL_ARCH ?= "${TARGET_CC_KERNEL_ARCH}"
+TARGET_LD_KERNEL_ARCH ?= ""
+HOST_LD_KERNEL_ARCH ?= "${TARGET_LD_KERNEL_ARCH}"
+TARGET_AR_KERNEL_ARCH ?= ""
+HOST_AR_KERNEL_ARCH ?= "${TARGET_AR_KERNEL_ARCH}"
+
+KERNEL_CC = "${CCACHE}${HOST_PREFIX}gcc ${HOST_CC_KERNEL_ARCH} -fuse-ld=bfd"
+KERNEL_LD = "${CCACHE}${HOST_PREFIX}ld.bfd ${HOST_LD_KERNEL_ARCH}"
+KERNEL_AR = "${CCACHE}${HOST_PREFIX}ar ${HOST_AR_KERNEL_ARCH}"
+