From 207806e14932da50a56aa0f025a1f9e8aee233a0 Mon Sep 17 00:00:00 2001
From: Wu Xiaotian <wuxiaotian@loongson.cn>
Date: Sat, 29 Jun 2024 13:58:55 +0800
Subject: [PATCH] build for loongarch64 qemu target

Signed-off-by: Wu Xiaotian <wuxiaotian@loongson.cn>
---
 BUILD.gn               | 2 ++
 build_kernel.sh        | 3 +++
 kernel.mk              | 6 ++++++
 kernel_module_build.sh | 4 ++++
 4 files changed, 15 insertions(+)

diff --git a/BUILD.gn b/BUILD.gn
index 856b92a..c6b884a 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -29,6 +29,8 @@ if (target_cpu == "arm") {
   kernel_image = "Image"
 } else if (target_cpu == "x86_64") {
   kernel_image = "bzImage"
+} else if (target_cpu == "loongarch64") {
+  kernel_image = "vmlinuz.efi"
 }
 
 if (os_level == "mini" || os_level == "small") {
diff --git a/build_kernel.sh b/build_kernel.sh
index bd4a9b5..f4adddc 100755
--- a/build_kernel.sh
+++ b/build_kernel.sh
@@ -41,6 +41,9 @@ elif [ "$5" == "arm64" ];then
 elif [ "$5" == "riscv64" ];then
     cp ${2}/kernel/OBJ/${8}/arch/riscv/boot/Image ${3}/Image
 
+elif [ "$5" == "loongarch64" ];then
+    cp ${2}/kernel/OBJ/${8}/vmlinuz.efi ${3}/vmlinuz.efi
+
 elif [ "$5" == "x86_64" ];then
     cp ${2}/kernel/OBJ/${8}/arch/x86/boot/bzImage ${3}/bzImage
 fi
diff --git a/kernel.mk b/kernel.mk
index 5cbda86..34d4740 100644
--- a/kernel.mk
+++ b/kernel.mk
@@ -49,13 +49,19 @@ else ifeq ($(KERNEL_ARCH), riscv64)
 else ifeq ($(KERNEL_ARCH), x86_64)
     KERNEL_TARGET_TOOLCHAIN := gcc
     KERNEL_TARGET_TOOLCHAIN_PREFIX :=
+else ifeq ($(KERNEL_ARCH), loongarch64)
+    KERNEL_TARGET_TOOLCHAIN := $(PREBUILTS_GCC_DIR)/linux-x86/loongarch64/gcc-loongarch64-linux-gnu/bin
+    KERNEL_TARGET_TOOLCHAIN_PREFIX := $(KERNEL_TARGET_TOOLCHAIN)/loongarch64-unknown-linux-gnu-
+    KERNEL_ARCH := loongarch
 endif
 
 ifeq ($(DEVICE_NAME), hispark_phoenix)
 KERNEL_CROSS_COMPILE += CONFIG_MSP="y"
 endif
 
+ifneq ($(KERNEL_ARCH), loongarch)
 KERNEL_CROSS_COMPILE += CC="$(CLANG_CC)"
+endif
 
 ifneq ($(KERNEL_ARCH), x86_64)
 KERNEL_CROSS_COMPILE += CROSS_COMPILE="$(KERNEL_TARGET_TOOLCHAIN_PREFIX)"
diff --git a/kernel_module_build.sh b/kernel_module_build.sh
index daefe1f..91c5693 100755
--- a/kernel_module_build.sh
+++ b/kernel_module_build.sh
@@ -38,11 +38,15 @@ elif [ "$KERNEL_ARCH" == "arm64" ];then
     kernel_image="Image"
 elif [ "$KERNEL_ARCH" == "x86_64" ];then
     kernel_image="bzImage"
+elif [ "$KERNEL_ARCH" == "loongarch64" ];then
+    kernel_image="vmlinuz.efi"
 fi
 export KERNEL_IMAGE=${kernel_image}
 
 if [ "$KERNEL_ARCH" == "riscv64" ];then
     LINUX_KERNEL_IMAGE_FILE=${LINUX_KERNEL_OBJ_OUT}/arch/riscv/boot/Image
+elif [ "$KERNEL_ARCH" == "loongarch64" ];then
+    LINUX_KERNEL_IMAGE_FILE=${LINUX_KERNEL_OBJ_OUT}/${kernel_image}
 else
     LINUX_KERNEL_IMAGE_FILE=${LINUX_KERNEL_OBJ_OUT}/arch/${KERNEL_ARCH}/boot/${kernel_image}
 fi
-- 
Gitee