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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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5
target/Config.in
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@@ -156,6 +156,10 @@ config i386
config i686
bool
config loongarch64
select ARCH_64BIT
bool
config m68k
bool
@@ -220,6 +224,7 @@ config ARCH
default "armeb" if armeb
default "i386" if i386
default "i686" if i686
default "loongarch64" if loongarch64
default "m68k" if m68k
default "mips" if mips
default "mipsel" if mipsel