xref: /OK3568_Linux_fs/yocto/poky/meta/classes/kernel-arch.bbclass (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1#
2# set the ARCH environment variable for kernel compilation (including
3# modules). return value must match one of the architecture directories
4# in the kernel source "arch" directory
5#
6
7valid_archs = "alpha cris ia64 \
8               i386 x86 \
9               m68knommu m68k ppc powerpc powerpc64 ppc64  \
10               sparc sparc64 \
11               arm aarch64 \
12               m32r mips \
13               sh sh64 um h8300   \
14               parisc s390  v850 \
15               avr32 blackfin \
16               microblaze \
17               nios2 arc riscv xtensa"
18
19def map_kernel_arch(a, d):
20    import re
21
22    valid_archs = d.getVar('valid_archs').split()
23
24    if   re.match('(i.86|athlon|x86.64)$', a):  return 'x86'
25    elif re.match('arceb$', a):                 return 'arc'
26    elif re.match('armeb$', a):                 return 'arm'
27    elif re.match('aarch64$', a):               return 'arm64'
28    elif re.match('aarch64_be$', a):            return 'arm64'
29    elif re.match('aarch64_ilp32$', a):         return 'arm64'
30    elif re.match('aarch64_be_ilp32$', a):      return 'arm64'
31    elif re.match('mips(isa|)(32|64|)(r6|)(el|)$', a):      return 'mips'
32    elif re.match('mcf', a):                    return 'm68k'
33    elif re.match('riscv(32|64|)(eb|)$', a):    return 'riscv'
34    elif re.match('p(pc|owerpc)(|64)', a):      return 'powerpc'
35    elif re.match('sh(3|4)$', a):               return 'sh'
36    elif re.match('bfin', a):                   return 'blackfin'
37    elif re.match('microblazee[bl]', a):        return 'microblaze'
38    elif a in valid_archs:                      return a
39    else:
40        if not d.getVar("TARGET_OS").startswith("linux"):
41            return a
42        bb.error("cannot map '%s' to a linux kernel architecture" % a)
43
44export ARCH = "${@map_kernel_arch(d.getVar('TARGET_ARCH'), d)}"
45
46def map_uboot_arch(a, d):
47    import re
48
49    if   re.match('p(pc|owerpc)(|64)', a): return 'ppc'
50    elif re.match('i.86$', a): return 'x86'
51    return a
52
53export UBOOT_ARCH = "${@map_uboot_arch(d.getVar('ARCH'), d)}"
54
55# Set TARGET_??_KERNEL_ARCH in the machine .conf to set architecture
56# specific options necessary for building the kernel and modules.
57TARGET_CC_KERNEL_ARCH ?= ""
58HOST_CC_KERNEL_ARCH ?= "${TARGET_CC_KERNEL_ARCH}"
59TARGET_LD_KERNEL_ARCH ?= ""
60HOST_LD_KERNEL_ARCH ?= "${TARGET_LD_KERNEL_ARCH}"
61TARGET_AR_KERNEL_ARCH ?= ""
62HOST_AR_KERNEL_ARCH ?= "${TARGET_AR_KERNEL_ARCH}"
63
64KERNEL_CC = "${CCACHE}${HOST_PREFIX}gcc ${HOST_CC_KERNEL_ARCH} -fuse-ld=bfd ${DEBUG_PREFIX_MAP} -fdebug-prefix-map=${STAGING_KERNEL_DIR}=${KERNEL_SRC_PATH} -fdebug-prefix-map=${STAGING_KERNEL_BUILDDIR}=${KERNEL_SRC_PATH}"
65KERNEL_LD = "${CCACHE}${HOST_PREFIX}ld.bfd ${HOST_LD_KERNEL_ARCH}"
66KERNEL_AR = "${CCACHE}${HOST_PREFIX}ar ${HOST_AR_KERNEL_ARCH}"
67TOOLCHAIN ?= "gcc"
68
69