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Weijie Gao 7fcb82665e loongarch64: new target
Add target for Loongson LoongArch64-based boards.

LoongArch is a new RISC ISA developed by Loongson. It's a bit like
MIPS or RISC-V. LoongArch includes both 32-bit and 64-bit versions
(LoongArch32/LoongArch64).

Loongson 3A5000 and 3A6000 are the two existing CPUs of LoongArch64
and is used for PC products. It's BIOS supports ACPI and UEFI-only
boot. These CPUs supports SMP and SMT.

At present only LoongArch64 is supported by linux kernel.

Toolchain requirement:
binutils >= 2.40
gcc >= 13.1

For details, please check the following links:
https://lwn.net/Articles/861951/
https://loongson.github.io/LoongArch-Documentation/README-EN.html

Signed-off-by: Weijie Gao <hackpascal@gmail.com>
2024-05-04 14:14:16 +08:00

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# SPDX-License-Identifier: GPL-2.0-or-later
sanitize_name_loongarch64() {
sed -e '
y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/;
s/[^a-z0-9_-]\+/-/g;
s/^-//;
s/-$//;
' "$@"
}
do_sysinfo_loongarch64() {
local vendor product file
for file in sys_vendor board_vendor; do
vendor="$(cat /sys/devices/virtual/dmi/id/$file 2>/dev/null)"
case "$vendor" in
empty | \
System\ manufacturer | \
To\ [bB]e\ [fF]illed\ [bB]y\ O\.E\.M\.)
continue
;;
esac
[ -n "$vendor" ] && break
done
for file in product_name board_name; do
product="$(cat /sys/devices/virtual/dmi/id/$file 2>/dev/null)"
case "$vendor:$product" in
?*:empty | \
?*:System\ Product\ Name | \
?*:To\ [bB]e\ [fF]illed\ [bB]y\ O\.E\.M\.)
continue
;;
?*:?*)
break
;;
esac
done
[ -d "/sys/firmware/devicetree/base" ] && return
[ -n "$vendor" -a -n "$product" ] || return
mkdir -p /tmp/sysinfo
echo "$vendor $product" > /tmp/sysinfo/model
sanitize_name_loongarch64 /tmp/sysinfo/model > /tmp/sysinfo/board_name
}
boot_hook_add preinit_main do_sysinfo_loongarch64