1# 2# Copyright OpenEmbedded Contributors 3# 4# SPDX-License-Identifier: MIT 5# 6 7# 8# set the ARCH environment variable for kernel compilation (including 9# modules). return value must match one of the architecture directories 10# in the kernel source "arch" directory 11# 12 13valid_archs = "alpha cris ia64 \ 14 i386 x86 \ 15 m68knommu m68k ppc powerpc powerpc64 ppc64 \ 16 sparc sparc64 \ 17 arm aarch64 \ 18 m32r mips \ 19 sh sh64 um h8300 \ 20 parisc s390 v850 \ 21 avr32 blackfin \ 22 loongarch64 \ 23 microblaze \ 24 nios2 arc riscv xtensa" 25 26def map_kernel_arch(a, d): 27 import re 28 29 valid_archs = d.getVar('valid_archs').split() 30 31 if re.match('(i.86|athlon|x86.64)$', a): return 'x86' 32 elif re.match('arceb$', a): return 'arc' 33 elif re.match('armeb$', a): return 'arm' 34 elif re.match('aarch64$', a): return 'arm64' 35 elif re.match('aarch64_be$', a): return 'arm64' 36 elif re.match('aarch64_ilp32$', a): return 'arm64' 37 elif re.match('aarch64_be_ilp32$', a): return 'arm64' 38 elif re.match('loongarch(32|64|)$', a): return 'loongarch' 39 elif re.match('mips(isa|)(32|64|)(r6|)(el|)$', a): return 'mips' 40 elif re.match('mcf', a): return 'm68k' 41 elif re.match('riscv(32|64|)(eb|)$', a): return 'riscv' 42 elif re.match('p(pc|owerpc)(|64)', a): return 'powerpc' 43 elif re.match('sh(3|4)$', a): return 'sh' 44 elif re.match('bfin', a): return 'blackfin' 45 elif re.match('microblazee[bl]', a): return 'microblaze' 46 elif a in valid_archs: return a 47 else: 48 if not d.getVar("TARGET_OS").startswith("linux"): 49 return a 50 bb.error("cannot map '%s' to a linux kernel architecture" % a) 51 52export ARCH = "${@map_kernel_arch(d.getVar('TARGET_ARCH'), d)}" 53 54def map_uboot_arch(a, d): 55 import re 56 57 if re.match('p(pc|owerpc)(|64)', a): return 'ppc' 58 elif re.match('i.86$', a): return 'x86' 59 return a 60 61export UBOOT_ARCH = "${@map_uboot_arch(d.getVar('ARCH'), d)}" 62 63# Set TARGET_??_KERNEL_ARCH in the machine .conf to set architecture 64# specific options necessary for building the kernel and modules. 65TARGET_CC_KERNEL_ARCH ?= "" 66HOST_CC_KERNEL_ARCH ?= "${TARGET_CC_KERNEL_ARCH}" 67TARGET_LD_KERNEL_ARCH ?= "" 68HOST_LD_KERNEL_ARCH ?= "${TARGET_LD_KERNEL_ARCH}" 69TARGET_AR_KERNEL_ARCH ?= "" 70HOST_AR_KERNEL_ARCH ?= "${TARGET_AR_KERNEL_ARCH}" 71TARGET_OBJCOPY_KERNEL_ARCH ?= "" 72HOST_OBJCOPY_KERNEL_ARCH ?= "${TARGET_OBJCOPY_KERNEL_ARCH}" 73 74KERNEL_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}=${KERNEL_SRC_PATH}" 75KERNEL_LD = "${HOST_PREFIX}ld.bfd ${HOST_LD_KERNEL_ARCH}" 76KERNEL_AR = "${HOST_PREFIX}ar ${HOST_AR_KERNEL_ARCH}" 77KERNEL_OBJCOPY = "${HOST_PREFIX}objcopy ${HOST_OBJCOPY_KERNEL_ARCH}" 78# Code in package.py can't handle options on KERNEL_STRIP 79KERNEL_STRIP = "${HOST_PREFIX}strip" 80TOOLCHAIN ?= "gcc" 81