blob: 39280ab638b62f71e2f97e544ec2cfaf6f8a1336 [file] [log] [blame]
#
# Copyright 2022 Google LLC
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# version 2 as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
EAPI=7
inherit eutils linux-mod udev
DESCRIPTION="Snaggletooth kernel drivers"
HOMEPAGE="https://cloud.google.com/tpu"
GIT_COMMIT="cb119a8607ee9bb70542867579dc9b6e69a85c5a"
SRC_URI="https://github.com/tensorflow/tpu/archive/${GIT_COMMIT}.tar.gz -> ${P}.tar.gz"
LICENSE="BSD-Google"
SLOT="0"
KEYWORDS="*"
IUSE="+clang kernel-5_15 kernel-6_1"
# Prevent kernel module signature being striped.
RESTRICT="strip"
COMMON=""
DEPEND="
${COMMON}
virtual/linux-sources[kernel_sources]
"
RDEPEND="
${COMMON}"
S="${WORKDIR}/tpu-${GIT_COMMIT}/tools/driver/"
KBUILD_OUTPUT=${KERNEL_DIR}/build
MODULE_NAMES="
accel-class(kernel/drivers/accel:${S})
asic_sw(kernel/drivers/asic_sw:${S})
gasket(kernel/drivers/gasket:${S})
tpu_common(kernel/drivers/tpu_common:${S})
tpu_v2_core(kernel/drivers/tpu_common:${S})
tpu_v2(kernel/drivers/tpu_common:${S})
tpu_v3(kernel/drivers/tpu_common:${S})
tpuv4common_common(kernel/drivers/tpu_common:${S})
tpu_v4(kernel/drivers/tpu_common:${S})
tpu_v4_lite(kernel/drivers/tpu_common:${S})"
sign_module() {
local module_file="$1"
"${KBUILD_OUTPUT}"/scripts/sign-file \
sha256 \
"${KBUILD_OUTPUT}"/certs/signing_key.pem \
"${KBUILD_OUTPUT}"/certs/signing_key.x509 \
${module_file}
}
src_prepare() {
use clang || cros_use_gcc
if use kernel-5_15; then
PATCHES+=( "${FILESDIR}"/${PN}-5.10-include-fix.patch )
fi
if use kernel-6_1; then
PATCHES+=( "${FILESDIR}"/${PN}-6.1-build-compatible.patch )
fi
default
}
src_compile() {
cros_allow_gnu_build_tools
local kernel_arch=${CHROMEOS_KERNEL_ARCH:-$(tc-arch-kernel)}
LIBELF="$("${CBUILD}-pkg-config" libelf --libs 2>/dev/null || echo -lelf)"
eval "emake -C ${S} HOSTCC=\"$(tc-getBUILD_CC)\" \
CROSS_COMPILE=${CHOST}- \
CC=${CC} \
LD=${LD} \
LDFLAGS=\"$(get_abi_LDFLAGS)\" \
ARCH=${kernel_arch} \
HOST_LIBELF_LIBS=${LIBELF} \
KERNELDIR=\"${KBUILD_OUTPUT}\" \
-f Makefile.tpu_kernel_modules \
all" \
|| die "Unable to emake -C ${S} HOSTCC=\"$(tc-getBUILD_CC)\" \
CROSS_COMPILE=${CHOST}- \
CC=${CC} \
LD=${LD} \
LDFLAGS=\"$(get_abi_LDFLAGS)\" \
ARCH=${kernel_arch} \
KERNELDIR=\"${KBUILD_OUTPUT}\" \
-f Makefile.tpu_kernel_modules \
all"
}
src_install() {
for i in ${MODULE_NAMES}
do
unset libdir srcdir objdir
for n in $(find_module_params ${i})
do
eval ${n/:*}=${n/*:/}
done
libdir=${libdir:-misc}
srcdir=${srcdir:-${S}}
objdir=${objdir:-${srcdir}}
einfo "Signing ${modulename} module"
sign_module ${objdir}/${modulename}.${KV_OBJ}
done
linux-mod_src_install
udev_dorules "${FILESDIR}/99-tpu.rules"
}