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| author | Dhaval <dhaval@rivosinc.com> | 2023-12-13 20:29:29 +0530 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2023-12-19 12:48:14 +0000 |
| commit | 26727c2ae2a8883b7f4be23c26b6209ea763c816 (patch) | |
| tree | af3ecdffb261840db0d01e46b602ab5d35a93e7c /MdePkg/Library/BaseLib/BaseLib.inf | |
| parent | 30faafd0247af0a6534caf2a6ac3231fa8e63d86 (diff) | |
| download | edk2-26727c2ae2a8883b7f4be23c26b6209ea763c816.tar.gz edk2-26727c2ae2a8883b7f4be23c26b6209ea763c816.tar.bz2 edk2-26727c2ae2a8883b7f4be23c26b6209ea763c816.zip | |
MdePkg: Implement RISC-V Cache Management Operations
Implement Cache Management Operations (CMO) defined by
RISC-V spec https://github.com/riscv/riscv-CMOs.
Notes:
1. CMO only supports block based Operations. Meaning cache
flush/invd/clean Operations are not available for the entire
range. In that case we fallback on fence.i instructions.
2. Operations are implemented using Opcodes to make them compiler
independent. binutils 2.39+ compilers support CMO instructions.
Test:
1. Ensured correct instructions are refelecting in asm
2. Qemu implements basic support for CMO operations in that it allwos
instructions without exceptions. Verified it works properly in
that sense.
3. SG2042Pkg implements CMO-like instructions. It was verified that
CpuFlushCpuDataCache works fine. This more of less
confirms that framework is alright.
4. TODO: Once Silicon is available with exact instructions, we will
further verify this.
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Sunil V L <sunilvl@ventanamicro.com>
Cc: Daniel Schaefer <git@danielschaefer.me>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Pedro Falcato <pedro.falcato@gmail.com>
Signed-off-by: Dhaval Sharma <dhaval@rivosinc.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Sunil V L <sunilvl@...>
Reviewed-by: Jingyu Li <jingyu.li01@...>
Diffstat (limited to 'MdePkg/Library/BaseLib/BaseLib.inf')
| -rw-r--r-- | MdePkg/Library/BaseLib/BaseLib.inf | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf index 03c7b02e82..5338938944 100644 --- a/MdePkg/Library/BaseLib/BaseLib.inf +++ b/MdePkg/Library/BaseLib/BaseLib.inf @@ -400,7 +400,7 @@ RiscV64/RiscVCpuBreakpoint.S | GCC
RiscV64/RiscVCpuPause.S | GCC
RiscV64/RiscVInterrupt.S | GCC
- RiscV64/FlushCache.S | GCC
+ RiscV64/RiscVCacheMgmt.S | GCC
RiscV64/CpuScratch.S | GCC
RiscV64/ReadTimer.S | GCC
RiscV64/RiscVMmu.S | GCC
|