loongarch64: new target

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>

config/Config-images.in

@@ -204,13 +204,14 @@ menu "Target Images"
 		default y
 
 	config GRUB_EFI_IMAGES
-		bool "Build GRUB EFI images (Linux x86 or x86_64 host only)"
+		bool "Build GRUB EFI images"
-		depends on TARGET_x86 || TARGET_armsr
+		depends on TARGET_x86 || TARGET_armsr || TARGET_loongarch64
 		depends on TARGET_ROOTFS_EXT4FS || TARGET_ROOTFS_JFFS2 || TARGET_ROOTFS_SQUASHFS
 		select PACKAGE_grub2 if TARGET_x86
 		select PACKAGE_grub2-efi if TARGET_x86
 		select PACKAGE_grub2-bios-setup if TARGET_x86
 		select PACKAGE_grub2-efi-arm if TARGET_armsr
+		select PACKAGE_grub2-efi-loongarch64 if TARGET_loongarch64
 		select PACKAGE_kmod-fs-vfat
 		default y
 
@@ -276,12 +277,12 @@ menu "Target Images"
 
 	config TARGET_SERIAL
 		string "Serial port device"
-		depends on TARGET_x86 || TARGET_armsr
+		depends on TARGET_x86 || TARGET_armsr || TARGET_loongarch64
 		default "ttyS0"
 
 	config TARGET_IMAGES_GZIP
 		bool "GZip images"
-		depends on TARGET_ROOTFS_EXT4FS || TARGET_x86 || TARGET_armsr || TARGET_malta
+		depends on TARGET_ROOTFS_EXT4FS || TARGET_x86 || TARGET_armsr || TARGET_malta || TARGET_loongarch64
 		default y
 
 	comment "Image Options"
@@ -300,6 +301,7 @@ menu "Target Images"
 	config TARGET_ROOTFS_PARTSIZE
 		int "Root filesystem partition size (in MiB)"
 		depends on USES_ROOTFS_PART || TARGET_ROOTFS_EXT4FS
+		default 232 if TARGET_loongarch64
 		default 448 if TARGET_mediatek
 		default 104
 		help

include/kernel.mk

@@ -86,6 +86,8 @@ else ifneq (,$(findstring $(ARCH) , arceb ))
   LINUX_KARCH := arc
 else ifneq (,$(findstring $(ARCH) , armeb ))
   LINUX_KARCH := arm
+else ifneq (,$(findstring $(ARCH) , loongarch64 ))
+  LINUX_KARCH := loongarch
 else ifneq (,$(findstring $(ARCH) , mipsel mips64 mips64el ))
   LINUX_KARCH := mips
 else ifneq (,$(findstring $(ARCH) , powerpc64 ))

include/site/loongarch64

@@ -0,0 +1,30 @@
+#!/bin/sh
+. $TOPDIR/include/site/linux
+ac_cv_c_littleendian=${ac_cv_c_littleendian=yes}
+ac_cv_c_bigendian=${ac_cv_c_bigendian=no}
+
+ac_cv_sizeof___int64=0
+ac_cv_sizeof_char=1
+ac_cv_sizeof_int=4
+ac_cv_sizeof_int16_t=2
+ac_cv_sizeof_int32_t=4
+ac_cv_sizeof_int64_t=8
+ac_cv_sizeof_long_int=8
+ac_cv_sizeof_long_long=8
+ac_cv_sizeof_long=8
+ac_cv_sizeof_off_t=8
+ac_cv_sizeof_short_int=2
+ac_cv_sizeof_short=2
+ac_cv_sizeof_size_t=8
+ac_cv_sizeof_ssize_t=8
+ac_cv_sizeof_u_int16_t=2
+ac_cv_sizeof_u_int32_t=4
+ac_cv_sizeof_u_int64_t=8
+ac_cv_sizeof_uint16_t=2
+ac_cv_sizeof_uint32_t=4
+ac_cv_sizeof_uint64_t=8
+ac_cv_sizeof_unsigned_int=4
+ac_cv_sizeof_unsigned_long=8
+ac_cv_sizeof_unsigned_long_long=8
+ac_cv_sizeof_unsigned_short=2
+ac_cv_sizeof_void_p=8

include/target.mk

@@ -264,6 +264,11 @@ ifeq ($(DUMP),1)
     CPU_TYPE ?= riscv64
     CPU_CFLAGS_riscv64:=-mabi=lp64d -march=rv64imafdc
   endif
+  ifeq ($(ARCH),loongarch64)
+    CPU_TYPE ?= generic
+    CPU_CFLAGS := -O2 -pipe
+    CPU_CFLAGS_generic:=-march=loongarch64
+  endif
   ifneq ($(CPU_TYPE),)
     ifndef CPU_CFLAGS_$(CPU_TYPE)
       $(warning CPU_TYPE "$(CPU_TYPE)" doesn't correspond to a known type)

target/Config.in

@@ -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

target/linux/loongarch64/Makefile

@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) 2024 Weijie Gao <hackpascal@gmail.com>
+
+include $(TOPDIR)/rules.mk
+
+ARCH:=loongarch64
+BOARD:=loongarch64
+BOARDNAME:=Loongson LoongArch
+FEATURES:=audio display ext4 pcie boot-part rootfs-part rtc usb targz
+SUBTARGETS:=generic
+
+KERNEL_PATCHVER:=6.6
+
+KERNELNAME:=vmlinuz.efi dtbs
+
+include $(INCLUDE_DIR)/target.mk
+
+DEFAULT_PACKAGES += \
+	partx-utils blkid e2fsprogs grub2-efi-loongarch64
+
+$(eval $(call BuildTarget))

target/linux/loongarch64/base-files.mk

@@ -0,0 +1,8 @@
+GRUB_SERIAL:=$(call qstrip,$(CONFIG_TARGET_SERIAL))
+ifeq ($(GRUB_SERIAL),)
+$(error This platform requires CONFIG_TARGET_SERIAL be set!)
+endif
+
+define Package/base-files/install-target
+	$(SED) "s#@GRUB_SERIAL@#$(GRUB_SERIAL)#" $(1)/etc/inittab
+endef

target/linux/loongarch64/base-files/etc/inittab

@@ -0,0 +1,4 @@
+::sysinit:/etc/init.d/rcS S boot
+::shutdown:/etc/init.d/rcS K shutdown
+@GRUB_SERIAL@::askfirst:/usr/libexec/login.sh
+tty0::askfirst:/usr/libexec/login.sh

target/linux/loongarch64/base-files/lib/preinit/01_sysinfo_acpi

@@ -0,0 +1,52 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+sanitize_name_loongarch64() {
+	sed -e '
+		y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/;
+		s/[^a-z0-9_-]\+/-/g;
+		s/^-//;
+		s/-$//;
+	' "$@"
+}
+
+do_sysinfo_loongarch64() {
+	local vendor product file
+
+	for file in sys_vendor board_vendor; do
+		vendor="$(cat /sys/devices/virtual/dmi/id/$file 2>/dev/null)"
+		case "$vendor" in
+		empty | \
+		System\ manufacturer | \
+		To\ [bB]e\ [fF]illed\ [bB]y\ O\.E\.M\.)
+			continue
+			;;
+		esac
+		[ -n "$vendor" ] && break
+	done
+
+	for file in product_name board_name; do
+		product="$(cat /sys/devices/virtual/dmi/id/$file 2>/dev/null)"
+		case "$vendor:$product" in
+		?*:empty | \
+		?*:System\ Product\ Name | \
+		?*:To\ [bB]e\ [fF]illed\ [bB]y\ O\.E\.M\.)
+			continue
+			;;
+		?*:?*)
+			break
+			;;
+		esac
+	done
+
+	[ -d "/sys/firmware/devicetree/base" ] && return
+
+	[ -n "$vendor" -a -n "$product" ] || return
+
+	mkdir -p /tmp/sysinfo
+
+	echo "$vendor $product" > /tmp/sysinfo/model
+
+	sanitize_name_loongarch64 /tmp/sysinfo/model > /tmp/sysinfo/board_name
+}
+
+boot_hook_add preinit_main do_sysinfo_loongarch64

target/linux/loongarch64/base-files/lib/preinit/79_move_config

@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+move_config() {
+	local partdev parttype=ext4
+
+	. /lib/upgrade/common.sh
+
+	if export_bootdevice && export_partdevice partdev 1; then
+		part_magic_fat "/dev/$partdev" && parttype=vfat
+		if mount -t $parttype -o rw,noatime "/dev/$partdev" /mnt; then
+			if [ -f "/mnt/$BACKUP_FILE" ]; then
+				mv -f "/mnt/$BACKUP_FILE" /
+			fi
+			umount /mnt
+		fi
+	fi
+}
+
+boot_hook_add preinit_mount_root move_config

target/linux/loongarch64/base-files/lib/upgrade/platform.sh

@@ -0,0 +1,167 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+RAMFS_COPY_BIN="/usr/sbin/blkid"
+
+platform_check_image() {
+	local board=$(board_name)
+	local diskdev partdev diff
+	[ "$#" -gt 1 ] && return 1
+
+	v "Board is ${board}"
+
+	export_bootdevice && export_partdevice diskdev 0 || {
+		v "platform_check_image: Unable to determine upgrade device"
+		return 1
+	}
+
+	get_partitions "/dev/$diskdev" bootdisk
+
+	v "Extract boot sector from the image"
+	get_image_dd "$1" of=/tmp/image.bs count=63 bs=512b
+
+	get_partitions /tmp/image.bs image
+
+	#compare tables
+	diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
+
+	rm -f /tmp/image.bs /tmp/partmap.bootdisk /tmp/partmap.image
+
+	if [ -n "$diff" ]; then
+		v "Partition layout has changed. Full image will be written."
+		ask_bool 0 "Abort" && exit 1
+		return 0
+	fi
+}
+
+platform_copy_config() {
+	local partdev parttype=ext4
+
+	if export_partdevice partdev 1; then
+		part_magic_fat "/dev/$partdev" && parttype=vfat
+		mount -t $parttype -o rw,noatime "/dev/$partdev" /mnt
+		cp -af "$UPGRADE_BACKUP" "/mnt/$BACKUP_FILE"
+		umount /mnt
+	else
+		v "ERROR: Unable to find partition to copy config data to"
+	fi
+
+	sleep 5
+}
+
+# To avoid writing over any firmware
+# files (e.g ubootefi.var or firmware/X/ aka EBBR)
+# Copy efi/openwrt and efi/boot from the new image
+# to the existing ESP
+platform_do_upgrade_efi_system_partition() {
+	local image_file=$1
+	local target_partdev=$2
+	local image_efisp_start=$3
+	local image_efisp_size=$4
+
+	v "Updating ESP on ${target_partdev}"
+	NEW_ESP_DIR="/mnt/new_esp_loop"
+	CUR_ESP_DIR="/mnt/cur_esp"
+	mkdir "${NEW_ESP_DIR}"
+	mkdir "${CUR_ESP_DIR}"
+
+	get_image_dd "$image_file" of="/tmp/new_efi_sys_part.img" \
+		skip="$image_efisp_start" count="$image_efisp_size"
+
+	mount -t vfat -o loop -o ro /tmp/new_efi_sys_part.img "${NEW_ESP_DIR}"
+	if [ ! -d "${NEW_ESP_DIR}/efi/boot" ]; then
+		v "ERROR: Image does not contain EFI boot files (/efi/boot)"
+		return 1
+	fi
+
+	mount -t vfat "/dev/$partdev" "${CUR_ESP_DIR}"
+
+	for d in $(find "${NEW_ESP_DIR}/efi/" -mindepth 1 -maxdepth 1 -type d); do
+		v "Copying ${d}"
+		newdir_bname=$(basename "${d}")
+		rm -rf "${CUR_ESP_DIR}/efi/${newdir_bname}"
+		cp -r "${d}" "${CUR_ESP_DIR}/efi"
+		v "rm -rf \"${CUR_ESP_DIR}/efi/${newdir_bname}\""
+		v "cp -r \"${d}\" \"${CUR_ESP_DIR}/efi\""
+	done
+
+	umount "${NEW_ESP_DIR}"
+	umount "${CUR_ESP_DIR}"
+}
+
+platform_do_upgrade() {
+	local board=$(board_name)
+	local diskdev partdev diff
+
+	export_bootdevice && export_partdevice diskdev 0 || {
+		v "platform_do_upgrade: Unable to determine upgrade device"
+		return 1
+	}
+
+	sync
+
+	if [ "$UPGRADE_OPT_SAVE_PARTITIONS" = "1" ]; then
+		get_partitions "/dev/$diskdev" bootdisk
+
+		v "Extract boot sector from the image"
+		get_image_dd "$1" of=/tmp/image.bs count=63 bs=512b
+
+		get_partitions /tmp/image.bs image
+
+		#compare tables
+		diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
+	else
+		diff=1
+	fi
+
+	# Only change the partition table if sysupgrade -p is set,
+	# otherwise doing so could interfere with embedded "single storage"
+	# (e.g SoC boot from SD card) setups, as well as other user
+	# created storage (like uvol)
+	if [ -n "$diff" ] && [ "${UPGRADE_OPT_SAVE_PARTITIONS}" = "0" ]; then
+		# Need to remove partitions before dd, otherwise the partitions
+		# that are added after will have minor numbers offset
+		partx -d - "/dev/$diskdev"
+
+		get_image_dd "$1" of="/dev/$diskdev" bs=4096 conv=fsync
+
+		# Separate removal and addtion is necessary; otherwise, partition 1
+		# will be missing if it overlaps with the old partition 2
+		partx -a - "/dev/$diskdev"
+
+		return 0
+	fi
+
+	#iterate over each partition from the image and write it to the boot disk
+	while read part start size; do
+		if export_partdevice partdev $part; then
+			v "Writing image to /dev/$partdev..."
+			if [ "$part" = "1" ]; then
+				platform_do_upgrade_efi_system_partition \
+					$1 $partdev $start $size || return 1
+			else
+				v "Normal partition, doing DD"
+				get_image_dd "$1" of="/dev/$partdev" ibs=512 obs=1M skip="$start" \
+					count="$size" conv=fsync
+			fi
+		else
+			v "Unable to find partition $part device, skipped."
+		fi
+	done < /tmp/partmap.image
+
+	local parttype=ext4
+
+	if (blkid > /dev/null) && export_partdevice partdev 1; then
+		part_magic_fat "/dev/$partdev" && parttype=vfat
+		mount -t $parttype -o rw,noatime "/dev/$partdev" /mnt
+		if export_partdevice partdev 2; then
+			THIS_PART_BLKID=$(blkid -o value -s PARTUUID "/dev/${partdev}")
+			v "Setting rootfs PARTUUID=${THIS_PART_BLKID}"
+			sed -i "s/\(PARTUUID=\)[a-f0-9-]\+/\1${THIS_PART_BLKID}/ig" \
+				/mnt/efi/openwrt/grub.cfg
+		fi
+		umount /mnt
+	fi
+	# Provide time for the storage medium to flush before system reset
+	# (despite the sync/umount it appears NVMe etc. do it in the background)
+	sleep 5
+}

target/linux/loongarch64/config-6.6

@@ -0,0 +1,806 @@
+# CONFIG_16KB_2LEVEL is not set
+CONFIG_16KB_3LEVEL=y
+# CONFIG_4KB_3LEVEL is not set
+# CONFIG_4KB_4LEVEL is not set
+CONFIG_64BIT=y
+# CONFIG_64KB_2LEVEL is not set
+# CONFIG_64KB_3LEVEL is not set
+CONFIG_AC97_BUS=y
+CONFIG_ACPI=y
+CONFIG_ACPI_AC=y
+CONFIG_ACPI_BATTERY=y
+CONFIG_ACPI_BUTTON=y
+CONFIG_ACPI_CONTAINER=y
+CONFIG_ACPI_CPU_FREQ_PSS=y
+# CONFIG_ACPI_DEBUG is not set
+# CONFIG_ACPI_DEBUGGER is not set
+# CONFIG_ACPI_DOCK is not set
+# CONFIG_ACPI_EC_DEBUGFS is not set
+CONFIG_ACPI_FAN=y
+# CONFIG_ACPI_FFH is not set
+CONFIG_ACPI_GENERIC_GSI=y
+CONFIG_ACPI_HOTPLUG_CPU=y
+CONFIG_ACPI_I2C_OPREGION=y
+CONFIG_ACPI_MCFG=y
+# CONFIG_ACPI_PCI_SLOT is not set
+# CONFIG_ACPI_PFRUT is not set
+CONFIG_ACPI_PPTT=y
+CONFIG_ACPI_PROCESSOR=y
+CONFIG_ACPI_PROCESSOR_IDLE=y
+CONFIG_ACPI_SLEEP=y
+# CONFIG_ACPI_SPCR_TABLE is not set
+CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT=y
+CONFIG_ACPI_TABLE_UPGRADE=y
+# CONFIG_ACPI_TAD is not set
+CONFIG_ACPI_THERMAL=y
+CONFIG_ACPI_VIDEO=y
+CONFIG_APERTURE_HELPERS=y
+CONFIG_ARCH_DISABLE_KASAN_INLINE=y
+CONFIG_ARCH_DMA_ADDR_T_64BIT=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+# CONFIG_ARCH_IOREMAP is not set
+CONFIG_ARCH_KEEP_MEMBLOCK=y
+CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
+CONFIG_ARCH_MIGHT_HAVE_PC_SERIO=y
+CONFIG_ARCH_MMAP_RND_BITS=12
+CONFIG_ARCH_MMAP_RND_BITS_MAX=18
+CONFIG_ARCH_MMAP_RND_BITS_MIN=12
+CONFIG_ARCH_SELECT_MEMORY_MODEL=y
+CONFIG_ARCH_SPARSEMEM_ENABLE=y
+CONFIG_ARCH_STACKWALK=y
+CONFIG_ARCH_STRICT_ALIGN=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_WANTS_NO_INSTR=y
+# CONFIG_ARCH_WRITECOMBINE is not set
+CONFIG_ASN1=y
+CONFIG_ASSOCIATIVE_ARRAY=y
+CONFIG_ATA=y
+CONFIG_ATA_ACPI=y
+CONFIG_ATA_FORCE=y
+# CONFIG_ATA_SFF is not set
+CONFIG_ATA_VERBOSE_ERROR=y
+CONFIG_AUDIT=y
+CONFIG_AUDITSYSCALL=y
+CONFIG_AUDIT_GENERIC=y
+CONFIG_BACKLIGHT_CLASS_DEVICE=y
+# CONFIG_BACKLIGHT_KTZ8866 is not set
+CONFIG_BLK_CGROUP=y
+CONFIG_BLK_CGROUP_IOCOST=y
+CONFIG_BLK_CGROUP_RWSTAT=y
+CONFIG_BLK_DEBUG_FS=y
+CONFIG_BLK_DEBUG_FS_ZONED=y
+CONFIG_BLK_DEV_BSGLIB=y
+CONFIG_BLK_DEV_BSG_COMMON=y
+CONFIG_BLK_DEV_INTEGRITY=y
+CONFIG_BLK_DEV_INTEGRITY_T10=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_NVME=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_BLK_DEV_SR=y
+CONFIG_BLK_DEV_THROTTLING=y
+# CONFIG_BLK_DEV_THROTTLING_LOW is not set
+CONFIG_BLK_DEV_ZONED=y
+CONFIG_BLK_MQ_PCI=y
+CONFIG_BLK_PM=y
+CONFIG_BLK_RQ_ALLOC_TIME=y
+CONFIG_BLK_SED_OPAL=y
+CONFIG_BLK_WBT=y
+CONFIG_BLK_WBT_MQ=y
+CONFIG_BLOCK_LEGACY_AUTOLOAD=y
+CONFIG_BOOT_PRINTK_DELAY=y
+CONFIG_BSD_PROCESS_ACCT=y
+CONFIG_BSD_PROCESS_ACCT_V3=y
+CONFIG_BUFFER_HEAD=y
+CONFIG_BUG_ON_DATA_CORRUPTION=y
+CONFIG_CACHESTAT_SYSCALL=y
+CONFIG_CC_IMPLICIT_FALLTHROUGH="-Wimplicit-fallthrough=5"
+CONFIG_CC_NO_ARRAY_BOUNDS=y
+CONFIG_CDROM=y
+CONFIG_CFS_BANDWIDTH=y
+CONFIG_CGROUPS=y
+# CONFIG_CGROUP_BPF is not set
+# CONFIG_CGROUP_CPUACCT is not set
+# CONFIG_CGROUP_DEBUG is not set
+# CONFIG_CGROUP_DEVICE is not set
+# CONFIG_CGROUP_FREEZER is not set
+# CONFIG_CGROUP_HUGETLB is not set
+# CONFIG_CGROUP_NET_CLASSID is not set
+# CONFIG_CGROUP_NET_PRIO is not set
+# CONFIG_CGROUP_PIDS is not set
+# CONFIG_CGROUP_RDMA is not set
+CONFIG_CGROUP_SCHED=y
+CONFIG_CHECKPOINT_RESTORE=y
+CONFIG_CHR_DEV_SG=y
+CONFIG_CLZ_TAB=y
+CONFIG_CMA=y
+CONFIG_CMA_ALIGNMENT=8
+CONFIG_CMA_AREAS=7
+# CONFIG_CMA_DEBUG is not set
+# CONFIG_CMA_DEBUGFS is not set
+CONFIG_CMA_SIZE_MBYTES=16
+# CONFIG_CMA_SIZE_SEL_MAX is not set
+CONFIG_CMA_SIZE_SEL_MBYTES=y
+# CONFIG_CMA_SIZE_SEL_MIN is not set
+# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
+# CONFIG_CMA_SYSFS is not set
+CONFIG_CMDLINE_BOOTLOADER=y
+CONFIG_COMMON_CLK=y
+# CONFIG_COMMON_CLK_LOONGSON2 is not set
+# CONFIG_COMMON_CLK_SI521XX is not set
+# CONFIG_COMMON_CLK_VC3 is not set
+CONFIG_COMPACT_UNEVICTABLE_DEFAULT=1
+# CONFIG_COMPAT_32BIT_TIME is not set
+CONFIG_CONNECTOR=y
+CONFIG_CONSOLE_TRANSLATIONS=y
+CONFIG_CONTEXT_TRACKING=y
+CONFIG_CONTEXT_TRACKING_IDLE=y
+CONFIG_CONTIG_ALLOC=y
+CONFIG_COREDUMP=y
+CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
+CONFIG_CPUSETS=y
+CONFIG_CPU_HAS_FPU=y
+CONFIG_CPU_HAS_LASX=y
+CONFIG_CPU_HAS_LBT=y
+CONFIG_CPU_HAS_LSX=y
+CONFIG_CPU_HAS_PREFETCH=y
+CONFIG_CPU_ISOLATION=y
+CONFIG_CPU_PM=y
+CONFIG_CPU_RMAP=y
+CONFIG_CRC16=y
+CONFIG_CRC64=y
+CONFIG_CRC64_ROCKSOFT=y
+CONFIG_CRC_T10DIF=y
+CONFIG_CROSS_MEMORY_ATTACH=y
+CONFIG_CRYPTO_CBC=y
+CONFIG_CRYPTO_CRC32=y
+CONFIG_CRYPTO_CRC32C=y
+# CONFIG_CRYPTO_CRC32_LOONGARCH is not set
+CONFIG_CRYPTO_CRC64_ROCKSOFT=y
+CONFIG_CRYPTO_CRCT10DIF=y
+CONFIG_CRYPTO_HMAC=y
+CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
+CONFIG_CRYPTO_LIB_GF128MUL=y
+CONFIG_CRYPTO_LIB_POLY1305_RSIZE=1
+CONFIG_CRYPTO_LIB_SHA1=y
+CONFIG_CRYPTO_LIB_SHA256=y
+CONFIG_CRYPTO_LIB_UTILS=y
+CONFIG_CRYPTO_LZO=y
+CONFIG_CRYPTO_MD5=y
+CONFIG_CRYPTO_RNG=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_CRYPTO_RSA=y
+CONFIG_CRYPTO_SHA1=y
+CONFIG_CRYPTO_SHA256=y
+CONFIG_DCB=y
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_INFO_COMPRESSED_NONE=y
+# CONFIG_DEBUG_INFO_COMPRESSED_ZLIB is not set
+# CONFIG_DEBUG_INFO_COMPRESSED_ZSTD is not set
+CONFIG_DEBUG_LIST=y
+CONFIG_DEBUG_MEMORY_INIT=y
+CONFIG_DEBUG_MISC=y
+CONFIG_DETECT_HUNG_TASK=y
+# CONFIG_DEVFREQ_GOV_PASSIVE is not set
+# CONFIG_DEVFREQ_GOV_PERFORMANCE is not set
+# CONFIG_DEVFREQ_GOV_POWERSAVE is not set
+# CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND is not set
+# CONFIG_DEVFREQ_GOV_USERSPACE is not set
+CONFIG_DEVFREQ_THERMAL=y
+CONFIG_DEVMEM=y
+CONFIG_DEVTMPFS=y
+# CONFIG_DMAPOOL_TEST is not set
+CONFIG_DMA_CMA=y
+CONFIG_DMA_SHARED_BUFFER=y
+CONFIG_DMI=y
+CONFIG_DMIID=y
+CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK=y
+CONFIG_DMI_SYSFS=y
+CONFIG_DRM=y
+# CONFIG_DRM_ACCEL is not set
+CONFIG_DRM_BRIDGE=y
+CONFIG_DRM_FBDEV_EMULATION=y
+CONFIG_DRM_FBDEV_OVERALLOC=100
+CONFIG_DRM_KMS_HELPER=y
+CONFIG_DRM_LOAD_EDID_FIRMWARE=y
+CONFIG_DRM_LOONGSON=y
+CONFIG_DRM_PANEL=y
+# CONFIG_DRM_PANEL_AUO_A030JTN01 is not set
+CONFIG_DRM_PANEL_BRIDGE=y
+CONFIG_DRM_PANEL_ORIENTATION_QUIRKS=y
+# CONFIG_DRM_PANEL_ORISETECH_OTA5601A is not set
+# CONFIG_DRM_PANEL_SAMSUNG_S6D7AA0 is not set
+# CONFIG_DRM_SAMSUNG_DSIM is not set
+CONFIG_DRM_TTM=y
+CONFIG_DTC=y
+CONFIG_DUMMY_CONSOLE=y
+CONFIG_EFI=y
+CONFIG_EFIVAR_FS=m
+# CONFIG_EFI_BOOTLOADER_CONTROL is not set
+# CONFIG_EFI_CAPSULE_LOADER is not set
+# CONFIG_EFI_COCO_SECRET is not set
+CONFIG_EFI_CUSTOM_SSDT_OVERLAYS=y
+# CONFIG_EFI_DISABLE_PCI_DMA is not set
+# CONFIG_EFI_DISABLE_RUNTIME is not set
+CONFIG_EFI_EARLYCON=y
+CONFIG_EFI_ESRT=y
+CONFIG_EFI_GENERIC_STUB=y
+CONFIG_EFI_RUNTIME_WRAPPERS=y
+CONFIG_EFI_STUB=y
+# CONFIG_EFI_TEST is not set
+CONFIG_EFI_ZBOOT=y
+CONFIG_ELF_CORE=y
+CONFIG_ENCRYPTED_KEYS=y
+CONFIG_EXCLUSIVE_SYSTEM_RAM=y
+CONFIG_EXPORTFS_BLOCK_OPS=y
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_FS_POSIX_ACL=y
+CONFIG_EXT4_FS_SECURITY=y
+CONFIG_FAILOVER=y
+CONFIG_FAIR_GROUP_SCHED=y
+CONFIG_FANOTIFY=y
+CONFIG_FB=y
+CONFIG_FB_CFB_COPYAREA=y
+CONFIG_FB_CFB_FILLRECT=y
+CONFIG_FB_CFB_IMAGEBLIT=y
+CONFIG_FB_CORE=y
+CONFIG_FB_DEFERRED_IO=y
+CONFIG_FB_DEVICE=y
+CONFIG_FB_EFI=y
+CONFIG_FB_IOMEM_HELPERS=y
+CONFIG_FB_MODE_HELPERS=y
+CONFIG_FB_SIMPLE=y
+CONFIG_FB_SYSMEM_HELPERS=y
+CONFIG_FB_SYSMEM_HELPERS_DEFERRED=y
+CONFIG_FB_SYS_COPYAREA=y
+CONFIG_FB_SYS_FILLRECT=y
+CONFIG_FB_SYS_FOPS=y
+CONFIG_FB_SYS_IMAGEBLIT=y
+CONFIG_FB_TILEBLITTING=y
+CONFIG_FHANDLE=y
+CONFIG_FIRMWARE_EDID=y
+CONFIG_FIX_EARLYCON_MEM=y
+# CONFIG_FLATMEM_MANUAL is not set
+CONFIG_FONTS=y
+# CONFIG_FONT_10x18 is not set
+# CONFIG_FONT_6x10 is not set
+# CONFIG_FONT_6x11 is not set
+# CONFIG_FONT_7x14 is not set
+CONFIG_FONT_8x16=y
+CONFIG_FONT_8x8=y
+# CONFIG_FONT_ACORN_8x8 is not set
+# CONFIG_FONT_MINI_4x6 is not set
+# CONFIG_FONT_PEARL_8x8 is not set
+# CONFIG_FONT_SUN12x22 is not set
+# CONFIG_FONT_SUN8x16 is not set
+CONFIG_FONT_SUPPORT=y
+CONFIG_FONT_TER16x32=y
+CONFIG_FRAMEBUFFER_CONSOLE=y
+CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
+CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
+CONFIG_FREEZER=y
+CONFIG_FS_IOMAP=y
+CONFIG_FS_MBCACHE=y
+CONFIG_FS_POSIX_ACL=y
+CONFIG_FUNCTION_ALIGNMENT=0
+CONFIG_FW_CACHE=y
+# CONFIG_FW_DEVLINK_SYNC_STATE_TIMEOUT is not set
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_FW_LOADER_SYSFS=y
+CONFIG_GCC11_NO_ARRAY_BOUNDS=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_BUG_RELATIVE_POINTERS=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_CSUM=y
+CONFIG_GENERIC_ENTRY=y
+CONFIG_GENERIC_GETTIMEOFDAY=y
+CONFIG_GENERIC_IOREMAP=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+CONFIG_GENERIC_IRQ_MIGRATION=y
+CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_LIB_ASHLDI3=y
+CONFIG_GENERIC_LIB_ASHRDI3=y
+CONFIG_GENERIC_LIB_CMPDI2=y
+CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED=y
+CONFIG_GENERIC_LIB_LSHRDI3=y
+CONFIG_GENERIC_LIB_UCMPDI2=y
+CONFIG_GENERIC_MSI_IRQ=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_PHY=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GLOB=y
+CONFIG_GPIO_ACPI=y
+CONFIG_GPIO_CDEV=y
+CONFIG_GPIO_CDEV_V1=y
+# CONFIG_GPIO_DS4520 is not set
+# CONFIG_GPIO_FXL6408 is not set
+# CONFIG_GPIO_LATCH is not set
+# CONFIG_GPIO_LOONGSON_64BIT is not set
+CONFIG_HAMRADIO=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HDMI=y
+CONFIG_HIBERNATE_CALLBACKS=y
+CONFIG_HIBERNATION=y
+CONFIG_HIBERNATION_SNAPSHOT_DEV=y
+CONFIG_HID=y
+CONFIG_HIDRAW=y
+CONFIG_HID_GENERIC=y
+CONFIG_HID_SUPPORT=y
+CONFIG_HOTPLUG_CPU=y
+CONFIG_HUGETLBFS=y
+CONFIG_HUGETLB_PAGE=y
+CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP=y
+CONFIG_HWMON=y
+CONFIG_HW_CONSOLE=y
+CONFIG_HZ=250
+# CONFIG_HZ_100 is not set
+CONFIG_HZ_250=y
+CONFIG_HZ_PERIODIC=y
+CONFIG_I2C=y
+CONFIG_I2C_ALGOBIT=y
+# CONFIG_I2C_AMD_MP2 is not set
+CONFIG_I2C_BOARDINFO=y
+# CONFIG_I2C_LS2X is not set
+CONFIG_INITRAMFS_PRESERVE_MTIME=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_INIT_STACK_ALL_ZERO=y
+# CONFIG_INIT_STACK_NONE is not set
+CONFIG_INPUT=y
+CONFIG_INPUT_KEYBOARD=y
+CONFIG_INPUT_LEDS=y
+# CONFIG_INPUT_MISC is not set
+CONFIG_INPUT_MOUSE=y
+CONFIG_INPUT_MOUSEDEV=y
+CONFIG_INPUT_MOUSEDEV_PSAUX=y
+CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
+CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
+CONFIG_INPUT_SPARSEKMAP=y
+# CONFIG_IOMMUFD is not set
+# CONFIG_IOMMU_DEBUGFS is not set
+CONFIG_IOMMU_SUPPORT=y
+CONFIG_IO_URING=y
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_DOMAIN_HIERARCHY=y
+CONFIG_IRQ_FASTEOI_HIERARCHY_HANDLERS=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_LOONGARCH_CPU=y
+CONFIG_IRQ_POLL=y
+CONFIG_IRQ_WORK=y
+# CONFIG_ISCSI_IBFT is not set
+CONFIG_ISO9660_FS=y
+CONFIG_JBD2=y
+CONFIG_JUMP_LABEL=y
+CONFIG_KALLSYMS=y
+# CONFIG_KALLSYMS_SELFTEST is not set
+CONFIG_KCMP=y
+CONFIG_KEYS=y
+CONFIG_KSM=y
+CONFIG_L1_CACHE_SHIFT=6
+# CONFIG_LEDS_AW200XX is not set
+# CONFIG_LEDS_BD2606MVV is not set
+# CONFIG_LEDS_GROUP_MULTICOLOR is not set
+# CONFIG_LEDS_LM3697 is not set
+# CONFIG_LEDS_PCA995X is not set
+CONFIG_LEDS_TRIGGER_AUDIO=y
+CONFIG_LEDS_TRIGGER_CPU=y
+CONFIG_LEDS_TRIGGER_DISK=y
+CONFIG_LEDS_TRIGGER_MTD=y
+CONFIG_LEDS_TRIGGER_PANIC=y
+CONFIG_LEGACY_TIOCSTI=y
+CONFIG_LIBFDT=y
+CONFIG_LIST_HARDENED=y
+CONFIG_LOCKUP_DETECTOR=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_LOCK_SPIN_ON_OWNER=y
+CONFIG_LOONGARCH=y
+CONFIG_LOONGARCH_PLATFORM_DEVICES=y
+# CONFIG_LOONGSON2_GUTS is not set
+# CONFIG_LOONGSON2_PM is not set
+# CONFIG_LOONGSON2_THERMAL is not set
+CONFIG_LOONGSON_EIOINTC=y
+CONFIG_LOONGSON_HTVEC=y
+CONFIG_LOONGSON_LAPTOP=y
+CONFIG_LOONGSON_LIOINTC=y
+CONFIG_LOONGSON_PCH_LPC=y
+CONFIG_LOONGSON_PCH_MSI=y
+CONFIG_LOONGSON_PCH_PIC=y
+CONFIG_LSM="landlock,lockdown,yama,loadpin,safesetid,integrity,apparmor,selinux,smack,tomoyo,bpf"
+CONFIG_LZO_COMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
+CONFIG_MACH_LOONGSON64=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_MAGIC_SYSRQ_DEFAULT_ENABLE=0x01b6
+CONFIG_MAGIC_SYSRQ_SERIAL=y
+# CONFIG_MAX31827 is not set
+CONFIG_MAX_SKB_FRAGS=17
+# CONFIG_MEMCG is not set
+CONFIG_MEMFD_CREATE=y
+CONFIG_MEMORY=y
+CONFIG_MEMORY_ISOLATION=y
+# CONFIG_MFD_CS42L43_I2C is not set
+# CONFIG_MFD_INTEL_M10_BMC_SPI is not set
+# CONFIG_MFD_MAX5970 is not set
+# CONFIG_MFD_MAX77541 is not set
+# CONFIG_MFD_RK8XX_I2C is not set
+# CONFIG_MFD_RK8XX_SPI is not set
+# CONFIG_MFD_SMPRO is not set
+# CONFIG_MFD_TPS65219 is not set
+# CONFIG_MFD_TPS6594_I2C is not set
+# CONFIG_MFD_TPS6594_SPI is not set
+CONFIG_MIGRATION=y
+CONFIG_MMU_GATHER_MERGE_VMAS=y
+CONFIG_MMU_LAZY_TLB_REFCOUNT=y
+CONFIG_MODULES_USE_ELF_RELA=y
+# CONFIG_MODULE_DEBUG is not set
+CONFIG_MODULE_FORCE_LOAD=y
+CONFIG_MODULE_FORCE_UNLOAD=y
+# CONFIG_MOUSE_BCM5974 is not set
+# CONFIG_MOUSE_CYAPA is not set
+CONFIG_MOUSE_PS2=y
+CONFIG_MOUSE_PS2_ALPS=y
+CONFIG_MOUSE_PS2_BYD=y
+CONFIG_MOUSE_PS2_CYPRESS=y
+# CONFIG_MOUSE_PS2_ELANTECH is not set
+CONFIG_MOUSE_PS2_LOGIPS2PP=y
+CONFIG_MOUSE_PS2_SMBUS=y
+CONFIG_MOUSE_PS2_SYNAPTICS=y
+CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS=y
+# CONFIG_MOUSE_PS2_TOUCHKIT is not set
+CONFIG_MOUSE_PS2_TRACKPOINT=y
+# CONFIG_MOUSE_SERIAL is not set
+# CONFIG_MOUSE_VSXXXAA is not set
+# CONFIG_MOXA_INTELLIO is not set
+# CONFIG_MOXA_SMARTIO is not set
+CONFIG_MPILIB=y
+CONFIG_MQ_IOSCHED_DEADLINE=y
+CONFIG_MUTEX_SPIN_ON_OWNER=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y
+CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y
+# CONFIG_NET_CLS_CGROUP is not set
+CONFIG_NET_EGRESS=y
+CONFIG_NET_FAILOVER=y
+CONFIG_NET_FLOW_LIMIT=y
+CONFIG_NET_INGRESS=y
+CONFIG_NET_PTP_CLASSIFY=y
+CONFIG_NET_XGRESS=y
+CONFIG_NLS=y
+CONFIG_NR_CPUS=64
+CONFIG_NVMEM=y
+CONFIG_NVMEM_LAYOUTS=y
+CONFIG_NVMEM_SYSFS=y
+CONFIG_NVME_CORE=y
+CONFIG_NVME_HWMON=y
+CONFIG_NVME_MULTIPATH=y
+CONFIG_NVME_VERBOSE_ERRORS=y
+# CONFIG_N_HDLC is not set
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_KOBJ=y
+CONFIG_OID_REGISTRY=y
+# CONFIG_OVERLAY_FS_DEBUG is not set
+CONFIG_PADATA=y
+CONFIG_PAGE_EXTENSION=y
+CONFIG_PAGE_POISONING=y
+CONFIG_PAGE_POOL=y
+CONFIG_PAGE_POOL_STATS=y
+CONFIG_PAGE_REPORTING=y
+CONFIG_PAGE_SIZE_16KB=y
+CONFIG_PAGE_SIZE_LESS_THAN_256KB=y
+CONFIG_PAGE_SIZE_LESS_THAN_64KB=y
+# CONFIG_PANIC_ON_OOPS is not set
+CONFIG_PANIC_ON_OOPS_VALUE=0
+CONFIG_PATA_TIMINGS=y
+CONFIG_PCI=y
+CONFIG_PCIEAER=y
+CONFIG_PCIEASPM=y
+CONFIG_PCIEASPM_DEFAULT=y
+# CONFIG_PCIEASPM_PERFORMANCE is not set
+# CONFIG_PCIEASPM_POWERSAVE is not set
+# CONFIG_PCIEASPM_POWER_SUPERSAVE is not set
+CONFIG_PCIEPORTBUS=y
+CONFIG_PCIE_DPC=y
+# CONFIG_PCIE_EDR is not set
+CONFIG_PCIE_PME=y
+CONFIG_PCIE_PTM=y
+CONFIG_PCI_ATS=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_DOMAINS_GENERIC=y
+# CONFIG_PCI_DYNAMIC_OF_NODES is not set
+CONFIG_PCI_ECAM=y
+CONFIG_PCI_IOV=y
+CONFIG_PCI_LABEL=y
+CONFIG_PCI_LOONGSON=y
+CONFIG_PCI_MSI=y
+CONFIG_PCI_MSI_ARCH_FALLBACKS=y
+CONFIG_PCI_REALLOC_ENABLE_AUTO=y
+CONFIG_PCPU_DEV_REFCNT=y
+# CONFIG_PDS_CORE is not set
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PGTABLE_3LEVEL=y
+CONFIG_PGTABLE_LEVELS=3
+CONFIG_PHYS_ADDR_T_64BIT=y
+CONFIG_PM=y
+# CONFIG_PMIC_OPREGION is not set
+CONFIG_PM_ADVANCED_DEBUG=y
+CONFIG_PM_CLK=y
+CONFIG_PM_DEBUG=y
+CONFIG_PM_DEVFREQ=y
+# CONFIG_PM_DEVFREQ_EVENT is not set
+CONFIG_PM_OPP=y
+CONFIG_PM_SLEEP=y
+CONFIG_PM_SLEEP_DEBUG=y
+CONFIG_PM_SLEEP_SMP=y
+CONFIG_PM_STD_PARTITION=""
+# CONFIG_PM_TEST_SUSPEND is not set
+CONFIG_PNP=y
+CONFIG_PNPACPI=y
+# CONFIG_PNP_DEBUG_MESSAGES is not set
+CONFIG_POSIX_MQUEUE=y
+CONFIG_POSIX_MQUEUE_SYSCTL=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_POWER_SUPPLY_HWMON=y
+CONFIG_PPS=y
+# CONFIG_PREEMPT_NONE is not set
+CONFIG_PREEMPT_VOLUNTARY=y
+CONFIG_PREEMPT_VOLUNTARY_BUILD=y
+CONFIG_PRINTK_TIME=y
+CONFIG_PROC_CHILDREN=y
+CONFIG_PROC_EVENTS=y
+CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_PROC_PID_CPUSET=y
+CONFIG_PTP_1588_CLOCK=y
+# CONFIG_PTP_1588_CLOCK_MOCK is not set
+CONFIG_PTP_1588_CLOCK_OPTIONAL=y
+CONFIG_QUEUED_RWLOCKS=y
+CONFIG_QUEUED_SPINLOCKS=y
+# CONFIG_RANDOM_KMALLOC_CACHES is not set
+CONFIG_RANDSTRUCT_NONE=y
+CONFIG_RAS=y
+CONFIG_RATIONAL=y
+# CONFIG_RAVE_SP_CORE is not set
+# CONFIG_RCU_CPU_STALL_CPUTIME is not set
+CONFIG_REGMAP=y
+CONFIG_REGMAP_I2C=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_REGMAP_SPI=y
+CONFIG_RELAY=y
+CONFIG_RELOCATABLE=y
+CONFIG_RESET_ATTACK_MITIGATION=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RPS=y
+CONFIG_RSEQ=y
+CONFIG_RTC_CLASS=y
+# CONFIG_RTC_DRV_EFI is not set
+CONFIG_RTC_DRV_LOONGSON=y
+CONFIG_RTC_I2C_AND_SPI=y
+# CONFIG_RT_GROUP_SCHED is not set
+CONFIG_RWSEM_SPIN_ON_OWNER=y
+CONFIG_SATA_AHCI=y
+CONFIG_SATA_HOST=y
+# CONFIG_SATA_ZPODD is not set
+CONFIG_SCHEDSTATS=y
+CONFIG_SCHED_AUTOGROUP=y
+# CONFIG_SCHED_CORE is not set
+CONFIG_SCHED_DEBUG=y
+CONFIG_SCHED_INFO=y
+CONFIG_SCHED_MM_CID=y
+CONFIG_SCHED_SMT=y
+CONFIG_SCSI=y
+CONFIG_SCSI_COMMON=y
+CONFIG_SECCOMP=y
+CONFIG_SECCOMP_FILTER=y
+# CONFIG_SENSORS_HS3001 is not set
+# CONFIG_SENSORS_MC34VR500 is not set
+CONFIG_SERIAL_8250_EXTENDED=y
+CONFIG_SERIAL_8250_MANY_PORTS=y
+CONFIG_SERIAL_8250_NR_UARTS=4
+CONFIG_SERIAL_8250_PCI=y
+# CONFIG_SERIAL_8250_PCI1XXXX is not set
+CONFIG_SERIAL_8250_PCILIB=y
+CONFIG_SERIAL_8250_PERICOM=y
+CONFIG_SERIAL_8250_PNP=y
+CONFIG_SERIAL_8250_RSA=y
+CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+CONFIG_SERIAL_DEV_BUS=y
+CONFIG_SERIAL_DEV_CTRL_TTYPORT=y
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SERIAL_NONSTANDARD=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SERIO=y
+CONFIG_SERIO_I8042=y
+CONFIG_SERIO_LIBPS2=y
+CONFIG_SERIO_SERPORT=y
+CONFIG_SGL_ALLOC=y
+CONFIG_SG_POOL=y
+# CONFIG_SLAB_DEPRECATED is not set
+# CONFIG_SLUB_TINY is not set
+CONFIG_SMP=y
+CONFIG_SND=y
+CONFIG_SND_AC97_CODEC=y
+CONFIG_SND_COMPRESS_OFFLOAD=y
+CONFIG_SND_CTL_LED=y
+CONFIG_SND_DYNAMIC_MINORS=y
+CONFIG_SND_HDA=y
+# CONFIG_SND_HDA_CODEC_ANALOG is not set
+# CONFIG_SND_HDA_CODEC_CA0110 is not set
+# CONFIG_SND_HDA_CODEC_CA0132 is not set
+# CONFIG_SND_HDA_CODEC_CIRRUS is not set
+# CONFIG_SND_HDA_CODEC_CMEDIA is not set
+CONFIG_SND_HDA_CODEC_CONEXANT=y
+CONFIG_SND_HDA_CODEC_HDMI=y
+# CONFIG_SND_HDA_CODEC_REALTEK is not set
+# CONFIG_SND_HDA_CODEC_SI3054 is not set
+# CONFIG_SND_HDA_CODEC_SIGMATEL is not set
+# CONFIG_SND_HDA_CODEC_VIA is not set
+CONFIG_SND_HDA_CORE=y
+# CONFIG_SND_HDA_CTL_DEV_ID is not set
+CONFIG_SND_HDA_GENERIC=y
+CONFIG_SND_HDA_GENERIC_LEDS=y
+CONFIG_SND_HDA_HWDEP=y
+# CONFIG_SND_HDA_INPUT_BEEP is not set
+CONFIG_SND_HDA_INTEL=y
+# CONFIG_SND_HDA_PATCH_LOADER is not set
+# CONFIG_SND_HDA_RECONFIG is not set
+# CONFIG_SND_HDA_SCODEC_CS35L41_I2C is not set
+# CONFIG_SND_HDA_SCODEC_CS35L41_SPI is not set
+# CONFIG_SND_HDA_SCODEC_CS35L56_I2C is not set
+# CONFIG_SND_HDA_SCODEC_CS35L56_SPI is not set
+# CONFIG_SND_HDA_SCODEC_TAS2781_I2C is not set
+CONFIG_SND_HWDEP=y
+CONFIG_SND_INTEL_DSP_CONFIG=y
+CONFIG_SND_INTEL_NHLT=y
+CONFIG_SND_INTEL_SOUNDWIRE_ACPI=y
+CONFIG_SND_JACK=y
+CONFIG_SND_JACK_INPUT_DEV=y
+CONFIG_SND_MIXER_OSS=y
+CONFIG_SND_PCM=y
+CONFIG_SND_PCM_OSS=y
+CONFIG_SND_PCM_TIMER=y
+CONFIG_SND_RAWMIDI=y
+CONFIG_SND_SEQUENCER=y
+CONFIG_SND_SEQUENCER_OSS=y
+CONFIG_SND_SEQ_DEVICE=y
+CONFIG_SND_SEQ_DUMMY=y
+CONFIG_SND_SEQ_MIDI=y
+CONFIG_SND_SEQ_MIDI_EVENT=y
+CONFIG_SND_SEQ_VIRMIDI=y
+CONFIG_SND_SOC=y
+CONFIG_SND_SOC_AC97_BUS=y
+CONFIG_SND_SOC_AC97_CODEC=y
+CONFIG_SND_SOC_I2C_AND_SPI=y
+CONFIG_SND_SOC_LOONGSON_CARD=y
+CONFIG_SND_SOC_LOONGSON_I2S_PCI=y
+CONFIG_SND_TIMER=y
+CONFIG_SND_VIRMIDI=y
+CONFIG_SND_VMASTER=y
+CONFIG_SOCK_RX_QUEUE_MAPPING=y
+CONFIG_SOFTLOCKUP_DETECTOR=y
+CONFIG_SOUND=y
+CONFIG_SOUND_OSS_CORE=y
+CONFIG_SOUND_OSS_CORE_PRECLAIM=y
+CONFIG_SPARSEMEM=y
+CONFIG_SPARSEMEM_EXTREME=y
+CONFIG_SPARSEMEM_MANUAL=y
+CONFIG_SPARSEMEM_VMEMMAP=y
+CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SPI=y
+CONFIG_SPI_DYNAMIC=y
+CONFIG_SPI_LOONGSON_CORE=y
+CONFIG_SPI_LOONGSON_PCI=y
+CONFIG_SPI_LOONGSON_PLATFORM=y
+CONFIG_SPI_MASTER=y
+CONFIG_SPI_MEM=y
+# CONFIG_SPI_PCI1XXXX is not set
+# CONFIG_SPI_SN_F_OSPI is not set
+CONFIG_SPI_SPIDEV=y
+# CONFIG_SQUASHFS_CHOICE_DECOMP_BY_MOUNT is not set
+# CONFIG_SQUASHFS_COMPILE_DECOMP_MULTI is not set
+# CONFIG_SQUASHFS_COMPILE_DECOMP_MULTI_PERCPU is not set
+CONFIG_SQUASHFS_COMPILE_DECOMP_SINGLE=y
+CONFIG_SQUASHFS_DECOMP_SINGLE=y
+CONFIG_STACKPROTECTOR=y
+CONFIG_STACKPROTECTOR_STRONG=y
+CONFIG_STACKTRACE=y
+CONFIG_STRICT_DEVMEM=y
+CONFIG_SUSPEND=y
+CONFIG_SUSPEND_FREEZER=y
+CONFIG_SWIOTLB=y
+# CONFIG_SWIOTLB_DYNAMIC is not set
+CONFIG_SYNC_FILE=y
+CONFIG_SYSCTL_ARCH_UNALIGN_ALLOW=y
+CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN=y
+CONFIG_SYSCTL_EXCEPTION_TRACE=y
+CONFIG_SYSFB=y
+# CONFIG_SYSFB_SIMPLEFB is not set
+CONFIG_TASKSTATS=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
+CONFIG_TASK_XACCT=y
+# CONFIG_TEST_DHRY is not set
+CONFIG_THERMAL=y
+# CONFIG_THERMAL_DEFAULT_GOV_BANG_BANG is not set
+CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
+CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS=0
+CONFIG_THERMAL_GOV_BANG_BANG=y
+CONFIG_THERMAL_GOV_FAIR_SHARE=y
+CONFIG_THERMAL_GOV_STEP_WISE=y
+CONFIG_THERMAL_GOV_USER_SPACE=y
+CONFIG_THERMAL_HWMON=y
+CONFIG_THERMAL_OF=y
+CONFIG_THERMAL_STATISTICS=y
+CONFIG_THERMAL_WRITABLE_TRIPS=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TMPFS_INODE64=y
+CONFIG_TMPFS_POSIX_ACL=y
+# CONFIG_TMPFS_QUOTA is not set
+CONFIG_TRANSPARENT_HUGEPAGE=y
+CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y
+# CONFIG_TRANSPARENT_HUGEPAGE_MADVISE is not set
+CONFIG_TREE_RCU=y
+CONFIG_TREE_SRCU=y
+CONFIG_UCS2_STRING=y
+# CONFIG_UEVENT_HELPER is not set
+# CONFIG_UNWINDER_GUESS is not set
+CONFIG_UNWINDER_PROLOGUE=y
+CONFIG_USB=y
+CONFIG_USB_COMMON=y
+CONFIG_USB_EHCI_HCD=y
+# CONFIG_USB_EHCI_HCD_PLATFORM is not set
+CONFIG_USB_EHCI_PCI=y
+CONFIG_USB_HID=y
+CONFIG_USB_HIDDEV=y
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_OHCI_HCD_PCI=y
+# CONFIG_USB_OHCI_HCD_PLATFORM is not set
+CONFIG_USB_PCI=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_SUPPORT=y
+CONFIG_USB_UAS=y
+# CONFIG_USB_UHCI_HCD is not set
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_PCI=y
+# CONFIG_USB_XHCI_PLATFORM is not set
+CONFIG_USERFAULTFD=y
+CONFIG_USER_STACKTRACE_SUPPORT=y
+CONFIG_USE_PERCPU_NUMA_NODE_ID=y
+# CONFIG_VCAP is not set
+CONFIG_VGA_ARB=y
+CONFIG_VGA_ARB_MAX_GPUS=16
+CONFIG_VGA_CONSOLE=y
+CONFIG_VIDEO_CMDLINE=y
+CONFIG_VIDEO_NOMODESET=y
+CONFIG_VIRTIO_VSOCKETS_COMMON=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_VSOCKETS=y
+CONFIG_VSOCKETS_LOOPBACK=y
+CONFIG_VT=y
+CONFIG_VT_CONSOLE=y
+CONFIG_VT_CONSOLE_SLEEP=y
+CONFIG_VT_HW_CONSOLE_BINDING=y
+# CONFIG_WPCM450_SOC is not set
+# CONFIG_WQ_CPU_INTENSIVE_REPORT is not set
+CONFIG_XARRAY_MULTI=y
+CONFIG_XPS=y
+CONFIG_XXHASH=y
+# CONFIG_ZONEFS_FS is not set
+CONFIG_ZONE_DMA32=y

target/linux/loongarch64/generic/target.mk

@@ -0,0 +1 @@
+BOARDNAME:=Generic

target/linux/loongarch64/image/Makefile

@@ -0,0 +1,92 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) 2024 Weijie Gao <hackpascal@gmail.com>
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/image.mk
+
+GRUB2_VARIANT =
+GRUB_TERMINALS =
+GRUB_SERIAL_CONFIG =
+GRUB_TERMINAL_CONFIG =
+GRUB_CONSOLE_CMDLINE =
+
+ifneq ($(CONFIG_GRUB_CONSOLE),)
+  GRUB_CONSOLE_CMDLINE += console=tty0
+  GRUB_TERMINALS += console
+endif
+
+GRUB_SERIAL:=$(call qstrip,$(CONFIG_TARGET_SERIAL))
+
+GRUB_CONSOLE_CMDLINE += console=$(GRUB_SERIAL),$(CONFIG_GRUB_BAUDRATE)n8$(if $(CONFIG_GRUB_FLOWCONTROL),r,)
+GRUB_SERIAL_CONFIG := serial --unit=0 --speed=$(CONFIG_GRUB_BAUDRATE) --word=8 --parity=no --stop=1 --rtscts=$(if $(CONFIG_GRUB_FLOWCONTROL),on,off)
+GRUB_TERMINALS += serial
+
+GRUB_TERMINAL_CONFIG := terminal_input $(GRUB_TERMINALS); terminal_output $(GRUB_TERMINALS)
+
+ROOTPART:=$(call qstrip,$(CONFIG_TARGET_ROOTFS_PARTNAME))
+ROOTPART:=$(if $(ROOTPART),$(ROOTPART),PARTUUID=$(IMG_PART_SIGNATURE)-02)
+GPT_ROOTPART:=$(call qstrip,$(CONFIG_TARGET_ROOTFS_PARTNAME))
+GPT_ROOTPART:=$(if $(GPT_ROOTPART),$(GPT_ROOTPART),PARTUUID=$(shell echo $(IMG_PART_DISKGUID) | sed 's/00$$/02/'))
+
+GRUB_TIMEOUT:=$(call qstrip,$(CONFIG_GRUB_TIMEOUT))
+GRUB_TITLE:=$(call qstrip,$(CONFIG_GRUB_TITLE))
+
+BOOTOPTS:=$(call qstrip,$(CONFIG_GRUB_BOOTOPTS))
+
+define Build/combined
+	$(INSTALL_DIR) $@.boot/
+	$(CP) $(KDIR)/$(KERNEL_NAME) $@.boot/efi/openwrt/
+	$(INSTALL_DIR) $@.boot/efi/boot
+	$(CP) $(STAGING_DIR_IMAGE)/grub2/bootloongarch64.efi $@.boot/efi/boot/
+	KERNELPARTTYPE=ef FAT_TYPE="32" PADDING="1" SIGNATURE="$(IMG_PART_SIGNATURE)" \
+		GUID="$(IMG_PART_DISKGUID)" $(SCRIPT_DIR)/gen_image_generic.sh \
+		$@ \
+		$(CONFIG_TARGET_KERNEL_PARTSIZE) $@.boot \
+		$(CONFIG_TARGET_ROOTFS_PARTSIZE) $(IMAGE_ROOTFS) \
+		256
+endef
+
+define Build/grub-config
+	rm -fR $@.boot
+	$(INSTALL_DIR) $@.boot/efi/openwrt/
+	sed \
+		-e 's#@SERIAL_CONFIG@#$(strip $(GRUB_SERIAL_CONFIG))#g' \
+		-e 's#@TERMINAL_CONFIG@#$(strip $(GRUB_TERMINAL_CONFIG))#g' \
+		-e 's#@ROOTPART@#root=$(ROOTPART) rootwait#g' \
+		-e 's#@GPT_ROOTPART@#root=$(GPT_ROOTPART) rootwait#g' \
+		-e 's#@CMDLINE@#$(BOOTOPTS) $(GRUB_CONSOLE_CMDLINE)#g' \
+		-e 's#@TIMEOUT@#$(GRUB_TIMEOUT)#g' \
+		-e 's#@TITLE@#$(GRUB_TITLE)#g' \
+		-e 's#@KERNEL_NAME@#$(KERNEL_NAME)#g' \
+		./grub-$(1).cfg > $@.boot/efi/openwrt/grub.cfg
+endef
+
+define Device/Default
+  KERNEL_INSTALL := 1
+  ARTIFACTS := $$(ARTIFACTS-y)
+  SUPPORTED_DEVICES :=
+endef
+
+define Device/generic
+  DEVICE_VENDOR := Generic
+  DEVICE_MODEL := LoongArch64
+  DEVICE_PACKAGES += kmod-r8169 kmod-drm-amdgpu
+  KERNEL := kernel-bin
+  KERNEL_NAME := vmlinuz.efi
+  IMAGE/rootfs.img := append-rootfs | pad-to $(ROOTFS_PARTSIZE)
+  IMAGE/rootfs.img.gz := append-rootfs | pad-to $(ROOTFS_PARTSIZE) | gzip
+  IMAGE/combined-efi.img := grub-config efi | combined | append-metadata
+  IMAGE/combined-efi.img.gz := grub-config efi | combined | gzip | append-metadata
+  ifeq ($(CONFIG_TARGET_IMAGES_GZIP),y)
+    IMAGES-y := rootfs.img.gz
+    IMAGES-$$(CONFIG_GRUB_EFI_IMAGES) += combined-efi.img.gz
+  else
+    IMAGES-y := rootfs.img
+    IMAGES-$$(CONFIG_GRUB_EFI_IMAGES) += combined-efi.img
+  endif
+  IMAGES := $$(IMAGES-y)
+endef
+TARGET_DEVICES += generic
+
+$(eval $(call BuildImage))

target/linux/loongarch64/image/grub-efi.cfg

@@ -0,0 +1,14 @@
+@SERIAL_CONFIG@
+@TERMINAL_CONFIG@
+
+set default="0"
+set timeout="@TIMEOUT@"
+
+menuentry "@TITLE@" {
+	search --set=root --label kernel
+	linux /efi/openwrt/@KERNEL_NAME@ @GPT_ROOTPART@ @CMDLINE@ noinitrd
+}
+menuentry "@TITLE@ (failsafe)" {
+	search --set=root --label kernel
+	linux /efi/openwrt/@KERNEL_NAME@ failsafe=true @GPT_ROOTPART@ @CMDLINE@ noinitrd
+}

toolchain/Config.in

@@ -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