target: Use absolute path to test directory

This is required cause an absolute path to `snitch_bootrom.sv` is used
in the Make dependency list, while a relative path is used in a rule target.
This would lead to a "No rule to make target" error when building the HW
after a `make clean`.

Author: colluca

target/snitch_cluster/Makefile

@@ -49,6 +49,7 @@ CLUSTER_GEN_SRC ?= $(wildcard $(ROOT)/util/clustergen/*.py)
 
 BIN_DIR           ?= bin
 GENERATED_DIR     ?= $(MKFILE_DIR)generated
+TEST_DIR          ?= $(MKFILE_DIR)test
 PERIPH_DIR        ?= $(ROOT)/hw/snitch_cluster/src/snitch_cluster_peripheral
 
 # If the configuration file is overriden on the command-line (through
@@ -149,7 +150,7 @@ include $(ROOT)/target/snitch_cluster/sw.mk
 GENERATED_RTL_SOURCES  = $(PERIPH_DIR)/snitch_cluster_peripheral_reg_top.sv
 GENERATED_RTL_SOURCES += $(PERIPH_DIR)/snitch_cluster_peripheral_reg_pkg.sv
 GENERATED_RTL_SOURCES += $(GENERATED_DIR)/snitch_cluster_wrapper.sv
-GENERATED_RTL_SOURCES += test/snitch_bootrom.sv
+GENERATED_RTL_SOURCES += $(TEST_DIR)/snitch_bootrom.sv
 
 .PHONY: rtl clean-rtl
 
@@ -178,12 +179,12 @@ $(PERIPH_DIR)/snitch_cluster_peripheral_reg_top.sv: $(PERIPH_DIR)/snitch_cluster
 
 # Bootrom
 .PHONY: bootrom
-bootrom: test/snitch_bootrom.sv
-test/bootrom.elf test/bootrom.dump test/bootrom.bin test/snitch_bootrom.sv: test/bootrom.S test/bootrom.ld $(BOOTROM_GEN)
-	$(RISCV_CC) -mabi=ilp32d -march=rv32imafd -static -nostartfiles -fuse-ld=$(RISCV_LD) -Lsw/runtime -Ttest/bootrom.ld $< -o test/bootrom.elf
-	$(RISCV_OBJDUMP) -d test/bootrom.elf > test/bootrom.dump
-	$(RISCV_OBJCOPY) -j .text -O binary test/bootrom.elf test/bootrom.bin
-	$(BOOTROM_GEN) --sv-module snitch_bootrom test/bootrom.bin > test/snitch_bootrom.sv
+bootrom: $(TEST_DIR)/snitch_bootrom.sv
+$(TEST_DIR)/bootrom.elf $(TEST_DIR)/bootrom.dump $(TEST_DIR)/bootrom.bin $(TEST_DIR)/snitch_bootrom.sv: $(TEST_DIR)/bootrom.S $(TEST_DIR)/bootrom.ld $(BOOTROM_GEN)
+	$(RISCV_CC) -mabi=ilp32d -march=rv32imafd -static -nostartfiles -fuse-ld=$(RISCV_LD) -Lsw/runtime -T$(TEST_DIR)/bootrom.ld $< -o $(TEST_DIR)/bootrom.elf
+	$(RISCV_OBJDUMP) -d $(TEST_DIR)/bootrom.elf > $(TEST_DIR)/bootrom.dump
+	$(RISCV_OBJCOPY) -j .text -O binary $(TEST_DIR)/bootrom.elf $(TEST_DIR)/bootrom.bin
+	$(BOOTROM_GEN) --sv-module snitch_bootrom $(TEST_DIR)/bootrom.bin > $(TEST_DIR)/snitch_bootrom.sv
 
 #############
 # Verilator #

target/snitch_cluster/test/bootrom.dump

@@ -1,24 +1,23 @@
 
-test/bootrom.elf:	file format elf32-littleriscv
-
+/usr/scratch/vulcano/colluca/workspace/snitch_cluster/fix-dma-xbar/target/snitch_cluster/test/bootrom.elf:	file format elf32-littleriscv
 
 Disassembly of section .text:
 
 00000000 <_snitch_park>:
-       0: 97 02 00 00  	auipc	t0, 0
-       4: 93 82 02 02  	addi	t0, t0, 32
+       0: 97 02 00 00  	auipc	t0, 0x0
+       4: 93 82 02 02  	addi	t0, t0, 0x20
        8: 73 90 52 30  	csrw	mtvec, t0
-       c: 73 60 04 30  	csrsi	mstatus, 8
-      10: b7 02 08 00  	lui	t0, 128
-      14: 93 82 82 00  	addi	t0, t0, 8
+       c: 73 60 04 30  	csrsi	mstatus, 0x8
+      10: b7 02 08 00  	lui	t0, 0x80
+      14: 93 82 82 00  	addi	t0, t0, 0x8
       18: 73 90 42 30  	csrw	mie, t0
-      1c: 73 00 50 10  	wfi	
+      1c: 73 00 50 10  	wfi
 
 00000020 <_snitch_resume>:
-      20: 97 02 00 00  	auipc	t0, 0
-      24: 37 13 00 00  	lui	t1, 1
-      28: 13 03 83 16  	addi	t1, t1, 360
+      20: 97 02 00 00  	auipc	t0, 0x0
+      24: 37 13 00 00  	lui	t1, 0x1
+      28: 13 03 83 16  	addi	t1, t1, 0x168
       2c: b3 82 62 00  	add	t0, t0, t1
-      30: 83 a2 02 00  	lw	t0, 0(t0)
+      30: 83 a2 02 00  	lw	t0, 0x0(t0)
       34: e7 80 02 00  	jalr	t0
       38: 6f f0 9f fc  	j	0x0 <_snitch_park>