LoongArch64: Enable cmake cross-compilation

Author: XiWeiGu

cmake/arch.cmake

@@ -94,6 +94,10 @@ if (DYNAMIC_ARCH)
     endif ()
   endif ()
 
+  if (LOONGARCH64)
+    set(DYNAMIC_CORE LOONGSONGENERIC LOONGSON2K1000 LOONGSON3R5)
+  endif ()
+
   if (EXISTS ${PROJECT_SOURCE_DIR}/config_kernel.h)
 	  message (FATAL_ERROR "Your build directory contains a file config_kernel.h, probably from a previous compilation with make. This will conflict with the cmake compilation and cause strange compiler errors - please remove the file before trying again")
   endif ()

cmake/prebuild.cmake

@@ -1349,6 +1349,54 @@ endif ()
       "#define DTB_DEFAULT_ENTRIES 128\n"
       "#define DTB_SIZE 4096\n"
       "#define L2_ASSOCIATIVE 4\n")
+  elseif ("${TCORE}" STREQUAL "LOONGSONGENERIC")
+    file(APPEND ${TARGET_CONF_TEMP}
+      "#define DTB_DEFAULT_ENTRIES 64\n")
+      set(SGEMM_UNROLL_M 2)
+      set(SGEMM_UNROLL_N 8)
+      set(DGEMM_UNROLL_M 2)
+      set(DGEMM_UNROLL_N 8)
+      set(CGEMM_UNROLL_M 1)
+      set(CGEMM_UNROLL_N 4)
+      set(ZGEMM_UNROLL_M 1)
+      set(ZGEMM_UNROLL_N 4)
+      set(CGEMM3M_UNROLL_M 2)
+      set(CGEMM3M_UNROLL_N 8)
+      set(ZGEMM3M_UNROLL_M 2)
+      set(ZGEMM3M_UNROLL_N 8)
+  elseif ("${TCORE}" STREQUAL "LOONGSON2K1000")
+    file(APPEND ${TARGET_CONF_TEMP}
+      "#define DTB_DEFAULT_ENTRIES 64\n")
+      set(HAVE_LSX  1)
+      set(SGEMM_UNROLL_M 2)
+      set(SGEMM_UNROLL_N 8)
+      set(DGEMM_UNROLL_M 8)
+      set(DGEMM_UNROLL_N 4)
+      set(CGEMM_UNROLL_M 8)
+      set(CGEMM_UNROLL_N 4)
+      set(ZGEMM_UNROLL_M 4)
+      set(ZGEMM_UNROLL_N 4)
+      set(CGEMM3M_UNROLL_M 2)
+      set(CGEMM3M_UNROLL_N 8)
+      set(ZGEMM3M_UNROLL_M 8)
+      set(ZGEMM3M_UNROLL_N 4)
+  elseif ("${TCORE}" STREQUAL "LOONGSON3R5")
+    file(APPEND ${TARGET_CONF_TEMP}
+      "#define DTB_DEFAULT_ENTRIES 64\n")
+      set(HAVE_LASX 1)
+      set(HAVE_LSX  1)
+      set(SGEMM_UNROLL_M 16)
+      set(SGEMM_UNROLL_N 8)
+      set(DGEMM_UNROLL_M 16)
+      set(DGEMM_UNROLL_N 6)
+      set(CGEMM_UNROLL_M 16)
+      set(CGEMM_UNROLL_N 4)
+      set(ZGEMM_UNROLL_M 8)
+      set(ZGEMM_UNROLL_N 4)
+      set(CGEMM3M_UNROLL_M 16)
+      set(CGEMM3M_UNROLL_N 8)
+      set(ZGEMM3M_UNROLL_M 16)
+      set(ZGEMM3M_UNROLL_N 6)
   endif()
   set(SBGEMM_UNROLL_M 8)
   set(SBGEMM_UNROLL_N 4)

cmake/system.cmake

@@ -388,7 +388,7 @@ if (NEED_PIC)
   endif()
 endif ()
 
-if (X86_64 OR ${CORE} STREQUAL POWER10)
+if (X86_64 OR ${CORE} STREQUAL POWER10 OR LOONGARCH64)
   set(SMALL_MATRIX_OPT TRUE)
 endif ()
 if (ARM64)
@@ -403,7 +403,7 @@ if (SMALL_MATRIX_OPT)
 endif ()
 
 if (DYNAMIC_ARCH)
-  if (X86 OR X86_64 OR ARM64 OR POWER OR RISCV64)
+  if (X86 OR X86_64 OR ARM64 OR POWER OR RISCV64 OR LOONGARCH64)
     set(CCOMMON_OPT "${CCOMMON_OPT} -DDYNAMIC_ARCH")
     if (DYNAMIC_OLDER)
       set(CCOMMON_OPT "${CCOMMON_OPT} -DDYNAMIC_OLDER")

cmake/system_check.cmake

@@ -104,6 +104,8 @@ elseif(ARM)
   set(ARCH "arm")
 elseif(ARM64)
   set(ARCH "arm64")
+elseif(LOONGARCH64)
+  set(ARCH "loongarch64")
 else()
   set(ARCH ${CMAKE_SYSTEM_PROCESSOR} CACHE STRING "Target Architecture")
 endif ()

driver/others/CMakeLists.txt

@@ -54,6 +54,8 @@ if (DYNAMIC_ARCH)
     list(APPEND COMMON_SOURCES dynamic_power.c)
   elseif (RISCV64)
     list(APPEND COMMON_SOURCES dynamic_riscv64.c detect_riscv64.c)
+  elseif (LOONGARCH64)
+    list(APPEND COMMON_SOURCES dynamic_loongarch64.c)
   else ()  
     list(APPEND COMMON_SOURCES dynamic.c)
   endif ()  

kernel/loongarch64/KERNEL.LOONGSONGENERIC

@@ -0,0 +1,6 @@
+include $(KERNELDIR)/KERNEL
+
+STRMMKERNEL    =  gemm_kernel.S
+DTRMMKERNEL    =  gemm_kernel.S
+CTRMMKERNEL    =  zgemm_kernel.S
+ZTRMMKERNEL    =  zgemm_kernel.S