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Patrick Williams92b42cb2022-09-03 06:53:57 -05001#
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 \
Patrick Williams864cc432023-02-09 14:54:44 -060022 loongarch64 \
Patrick Williams92b42cb2022-09-03 06:53:57 -050023 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$', a): return 'arm64'
Patrick Williams864cc432023-02-09 14:54:44 -060038 elif re.match('loongarch(32|64|)$', a): return 'loongarch'
Patrick Williams92b42cb2022-09-03 06:53:57 -050039 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 ?= "${TARGET_AR_KERNEL_ARCH}"
Andrew Geissler6aa7eec2023-03-03 12:41:14 -060071TARGET_OBJCOPY_KERNEL_ARCH ?= ""
72HOST_OBJCOPY_KERNEL_ARCH ?= "${TARGET_OBJCOPY_KERNEL_ARCH}"
Patrick Williams92b42cb2022-09-03 06:53:57 -050073
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}=${KERNEL_SRC_PATH}"
75KERNEL_LD = "${CCACHE}${HOST_PREFIX}ld.bfd ${HOST_LD_KERNEL_ARCH}"
76KERNEL_AR = "${CCACHE}${HOST_PREFIX}ar ${HOST_AR_KERNEL_ARCH}"
Andrew Geissler6aa7eec2023-03-03 12:41:14 -060077KERNEL_OBJCOPY = "${CCACHE}${HOST_PREFIX}objcopy ${HOST_OBJCOPY_KERNEL_ARCH}"
Andrew Geissler517393d2023-01-13 08:55:19 -060078TOOLCHAIN ?= "gcc"
Patrick Williams92b42cb2022-09-03 06:53:57 -050079