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loongarch64: new target

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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>
This commit is contained in:
Weijie Gao
2024-01-07 03:10:45 +08:00
committed by Chuanhong Guo
parent 197d90dc31
commit 7fcb82665e
16 changed files with 1236 additions and 4 deletions
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3
toolchain/Config.in
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@@ -97,6 +97,7 @@ menuconfig EXTERNAL_TOOLCHAIN
default "arm-unknown-linux-gnu" if arm
default "armeb-unknown-linux-gnu" if armeb
default "i486-unknown-linux-gnu" if i386
default "loongarch64-unknown-linux-gnu" if loongarch64
default "mips-unknown-linux-gnu" if mips
default "mipsel-unknown-linux-gnu" if mipsel
default "powerpc-unknown-linux-gnu" if powerpc
@@ -111,6 +112,7 @@ menuconfig EXTERNAL_TOOLCHAIN
default "arm-unknown-linux-gnu-" if arm
default "armeb-unknown-linux-gnu-" if armeb
default "i486-unknown-linux-gnu-" if i386
default "loongarch64-unknown-linux-gnu-" if loongarch64
default "mips-unknown-linux-gnu-" if mips
default "mipsel-unknown-linux-gnu-" if mipsel
default "powerpc-unknown-linux-gnu-" if powerpc
@@ -125,6 +127,7 @@ menuconfig EXTERNAL_TOOLCHAIN
default "/opt/cross/arm-unknown-linux-gnu" if arm
default "/opt/cross/armeb-unknown-linux-gnu" if armeb
default "/opt/cross/i486-unknown-linux-gnu" if i386
default "/opt/cross/loongarch64-unknown-linux-gnu" if loongarch64
default "/opt/cross/mips-unknown-linux-gnu" if mips
default "/opt/cross/mipsel-unknown-linux-gnu" if mipsel
default "/opt/cross/powerpc-unknown-linux-gnu" if powerpc