diff --git a/bootloader/rustsbi-k210.bin b/bootloader/rustsbi-k210.bin
index d83a7a0e..e696137a 100755
Binary files a/bootloader/rustsbi-k210.bin and b/bootloader/rustsbi-k210.bin differ
diff --git a/bootloader/rustsbi-qemu.bin b/bootloader/rustsbi-qemu.bin
index 514b37c8..5ccab433 100755
Binary files a/bootloader/rustsbi-qemu.bin and b/bootloader/rustsbi-qemu.bin differ
diff --git a/os/Makefile b/os/Makefile
index 510b0a63..64190e53 100644
--- a/os/Makefile
+++ b/os/Makefile
@@ -3,7 +3,6 @@ TARGET := riscv64gc-unknown-none-elf
 MODE := release
 KERNEL_ELF := target/$(TARGET)/$(MODE)/os
 KERNEL_BIN := $(KERNEL_ELF).bin
-KERNEL_ENTRY_PA := 0x80020000
 DISASM_TMP := target/$(TARGET)/$(MODE)/asm
 FS_IMG := ../user/target/$(TARGET)/$(MODE)/fs.img
 SDCARD := /dev/sdb
@@ -13,6 +12,14 @@ APPS := ../user/src/bin
 BOARD ?= qemu
 SBI ?= rustsbi
 BOOTLOADER := ../bootloader/$(SBI)-$(BOARD).bin
+K210_BOOTLOADER_SIZE := 131072
+
+# KERNEL ENTRY
+ifeq ($(BOARD), qemu)
+	KERNEL_ENTRY_PA := 0x80200000
+else ifeq ($(BOARD), k210)
+	KERNEL_ENTRY_PA := 0x80020000
+endif
 
 # Run K210
 K210-SERIALPORT	= /dev/ttyUSB0
@@ -55,7 +62,10 @@ $(FS_IMG): $(APPS)
 $(APPS):
 
 kernel:
+	@echo Platform: $(BOARD)
+	@cp src/linker-$(BOARD).ld src/linker.ld
 	@cargo build --release --features "board_$(BOARD)"
+	@rm src/linker.ld
 
 clean:
 	@cargo clean
@@ -81,7 +91,7 @@ ifeq ($(BOARD),qemu)
         -device virtio-blk-device,drive=x0,bus=virtio-mmio-bus.0
 else
 	@cp $(BOOTLOADER) $(BOOTLOADER).copy
-	@dd if=$(KERNEL_BIN) of=$(BOOTLOADER).copy bs=131072 seek=1
+	@dd if=$(KERNEL_BIN) of=$(BOOTLOADER).copy bs=$(K210_BOOTLOADER_SIZE) seek=1
 	@mv $(BOOTLOADER).copy $(KERNEL_BIN)
 	@sudo chmod 777 $(K210-SERIALPORT)
 	python3 $(K210-BURNER) -p $(K210-SERIALPORT) -b 1500000 $(KERNEL_BIN)
diff --git a/os/src/linker.ld b/os/src/linker-k210.ld
similarity index 100%
rename from os/src/linker.ld
rename to os/src/linker-k210.ld
diff --git a/os/src/linker-qemu.ld b/os/src/linker-qemu.ld
new file mode 100644
index 00000000..6b06e916
--- /dev/null
+++ b/os/src/linker-qemu.ld
@@ -0,0 +1,50 @@
+OUTPUT_ARCH(riscv)
+ENTRY(_start)
+BASE_ADDRESS = 0x80200000;
+
+SECTIONS
+{
+    . = BASE_ADDRESS;
+    skernel = .;
+
+    stext = .;
+    .text : {
+        *(.text.entry)
+        . = ALIGN(4K);
+        strampoline = .;
+        *(.text.trampoline);
+        . = ALIGN(4K);
+        *(.text .text.*)
+    }
+
+    . = ALIGN(4K);
+    etext = .;
+    srodata = .;
+    .rodata : {
+        *(.rodata .rodata.*)
+    }
+
+    . = ALIGN(4K);
+    erodata = .;
+    sdata = .;
+    .data : {
+        *(.data .data.*)
+    }
+
+    . = ALIGN(4K);
+    edata = .;
+    sbss_with_stack = .;
+    .bss : {
+        *(.bss.stack)
+        sbss = .;
+        *(.bss .bss.*)
+    }
+
+    . = ALIGN(4K);
+    ebss = .;
+    ekernel = .;
+
+    /DISCARD/ : {
+        *(.eh_frame)
+    }
+}
\ No newline at end of file