added lpddrtest.

tests/custom/lpddrtest/Makefile

@@ -0,0 +1,19 @@
+TARGETDIR	:= lpddr_test
+TARGET		:= $(TARGETDIR)/$(TARGETDIR).elf
+ROOT		:= ..
+LIBRARY_DIRS	:= ${ROOT}/crt0
+LIBRARY_FILES	:= crt0
+
+MARCH           :=-march=rv64imfdczicbom
+MABI            :=-mabi=lp64d
+LINKER          := ${ROOT}/linker8000-0000.x
+LINK_FLAGS      :=$(MARCH) $(MABI) -nostartfiles -Wl,-Map=$(TARGET).map
+
+CFLAGS =$(MARCH) $(MABI) -Wa,-alhs -Wa,-L -mcmodel=medany  -mstrict-align -O2
+CC=riscv64-unknown-elf-gcc
+DA=riscv64-unknown-elf-objdump -d
+
+
+include $(ROOT)/makefile.inc
+
+

tests/custom/lpddrtest/header.h

@@ -0,0 +1,5 @@
+#ifndef __header
+#define __header
+
+void lpddr_test();
+#endif

tests/custom/lpddrtest/lpddr_test.s

@@ -0,0 +1,29 @@
+.section .text
+.globl lpddr_test
+.type lpddr_test, @function
+lpddr_test:
+	li t1, 0x90000000
+        addi t5, t1, 0
+	li t2, 0xAABBCCDD00112233
+
+        li t3, 10
+        li t4, 0
+loop_write:     
+        beq t4, t3, done_write
+        sd t2, 0(t5)
+        addi t5, t5, 8
+        addi t4, t4, 1
+        j loop_write
+done_write:   
+	
+        li t4, 0
+        addi t5, t1, 0
+loop_read:     
+        beq t4, t3, done_read
+        ld t6, 0(t5)
+        addi t5, t5, 8
+        addi t4, t4, 1
+        j loop_read
+done_read:      
+	ret
+	

tests/custom/lpddrtest/main.c

@@ -0,0 +1,6 @@
+#include "header.h"
+
+int main(){
+  lpddr_test();  
+  return 0;
+}