[SW] Initial support for compilation in Linux environment

Bender.lock

@@ -30,10 +30,10 @@ packages:
       Git: https://github.com/pulp-platform/common_verification.git
     dependencies: []
   cva6:
-    revision: ee89dcc00e6c1a1f4cf97ee1835e950fcfdeebb5
+    revision: e0dbbbf1a82377ae6db19d2e1ac87bddfdf5052a
     version: null
     source:
-      Git: https://github.com/pulp-platform/cva6.git
+      Git: https://github.com/mp-17/cva6.git
     dependencies:
     - axi
     - common_cells

Bender.yml

@@ -10,7 +10,7 @@ package:
 dependencies:
   axi:                { git: "https://github.com/pulp-platform/axi.git",                version: 0.39.1                               }
   common_cells:       { git: "https://github.com/pulp-platform/common_cells.git",       version: 1.22.1                               }
-  cva6:               { git: "https://github.com/pulp-platform/cva6.git",               rev: ee89dcc00e6c1a1f4cf97ee1835e950fcfdeebb5 } # pulp-v1
+  cva6:               { git: "https://github.com/mp-17/cva6.git",                       rev: e0dbbbf1a82377ae6db19d2e1ac87bddfdf5052a } # rebase/pulp-v1-os
   tech_cells_generic: { git: "https://github.com/pulp-platform/tech_cells_generic.git", version: 0.2.13                               }
   apb:                { git: "https://github.com/pulp-platform/apb.git",                version: 0.2.4                                }
 
@@ -28,7 +28,6 @@ sources:
 
     # Sources
     # Level 1
-    - hardware/src/axi_to_mem.sv
     - hardware/src/ctrl_registers.sv
     - hardware/src/cva6_accel_first_pass_decoder.sv
     - hardware/src/ara_dispatcher.sv

apps/.gitignore

@@ -1,2 +1,4 @@
 bin
 common/link.ld
+*.o*
+data.S*

apps/Makefile

@@ -21,6 +21,12 @@ APPS_DIR := $(ROOT_DIR)
 COMMON_DIR := $(ROOT_DIR)/common
 TESTS_DIR := $(ROOT_DIR)/riscv-tests/isa
 
+# Build environment for Linux
+LINUX ?= 0
+ifeq ($(LINUX), 1)
+include $(COMMON_DIR)/linux.mk
+endif
+
 # This will overwrite the ROOT_DIR variable from the included makefile
 include $(COMMON_DIR)/runtime.mk
 include $(COMMON_DIR)/riscv_tests.mk
@@ -33,9 +39,9 @@ BINARIES := $(filter-out bin/benchmarks, $(addprefix bin/,$(APPS)))
 CVA6_EXTENSIONS := rv64ui rv64uc rv64um rv64uf rv64ud rv64si
 # Atomics are messy, since there is currently no memory region capable of handling them
 # CVA6_EXTENSIONS := rv64ua
-CVA6_BINARIES := $(addprefix bin/, $(cva6_tests))
+CVA6_BINARIES := $(addsuffix $(IS_LINUX_EXTENSION), $(addprefix bin/, $(cva6_tests)))
 ARA_EXTENSIONS := rv64uv
-ARA_BINARIES := $(addprefix bin/, $(ara_tests))
+ARA_BINARIES := $(addsuffix $(IS_LINUX_EXTENSION), $(addprefix bin/, $(ara_tests)))
 
 # FFT requires special treatment because of its header files
 ifeq ($(ENV_DEFINES),)
@@ -98,14 +104,18 @@ endef
 $(foreach app,$(APPS),$(eval $(call app_compile_template_spike,$(app))))
 
 define app_compile_template
-bin/$1: $1/data.S.o $(addsuffix .o, $(shell find $(1) -name "*.c" -o -name "*.S")) $(RUNTIME_LLVM) linker_script
+bin/$1: $1/data.S.o$$(IS_LINUX_EXTENSION) $(addsuffix .o$$(IS_LINUX_EXTENSION), $(shell find $(1) -name "*.c" -o -name "*.S")) $(RUNTIME_LLVM) linker_script
 	mkdir -p bin/
-	$$(RISCV_CC) -Iinclude $(RISCV_CCFLAGS) -o $$@ $$(addsuffix .o, $$(shell find $(1) -name "*.c" -o -name "*.S")) $(RUNTIME_LLVM) $$(RISCV_LDFLAGS) -T$$(CURDIR)/common/link.ld
-	$$(RISCV_OBJDUMP) $$(RISCV_OBJDUMP_FLAGS) -D $$@ > [email protected]
-	$$(RISCV_STRIP) $$@ -S --strip-unneeded
+	$$(RISCV_CC) $(RISCV_CCFLAGS) -o $$@$$(IS_LINUX_EXTENSION) $$(addsuffix .o$$(IS_LINUX_EXTENSION), $$(shell find $(1) -name "*.c" -o -name "*.S")) $(RUNTIME_LLVM) $$(RISCV_LDFLAGS) $$(LD_FLAGS)
+	$$(RISCV_OBJDUMP) $$(RISCV_OBJDUMP_FLAGS) -D $$@$$(IS_LINUX_EXTENSION) > $$@$$(IS_LINUX_EXTENSION).dump
+	# Don't strip symbols for Linux build since need them for debug
+	if [ "$$(IS_LINUX_EXTENSION)" == "" ]; then \
+		$$(RISCV_STRIP) $$@$$(IS_LINUX_EXTENSION) -S --strip-unneeded; \
+	fi
 endef
 $(foreach app,$(APPS),$(eval $(call app_compile_template,$(app))))
 
+
 # Make the RISC-V tests
 riscv_tests: $(CVA6_BINARIES) $(ARA_BINARIES)
 
@@ -114,7 +124,7 @@ TESTS_$(1) := $(addprefix bin/, $($(addsuffix _ara_tests, $1)))
 
 bin/$(1)-ara-%: $(TESTS_DIR)/$(1)/%.$(2) $(RUNTIME_GCC) linker_script
 	mkdir -p bin/
-	$$(RISCV_CC_GCC) -Iinclude -I$$(TESTS_DIR)/macros/scalar -I$$(TESTS_DIR)/macros/vector $$(RISCV_CCFLAGS_GCC) $$(RISCV_LDFLAGS_GCC) -o $$@ $$< $(RUNTIME_GCC) -T$$(CURDIR)/common/link.ld
+	$$(RISCV_CC_GCC) -Iinclude -I$$(TESTS_DIR)/macros/scalar -I$$(TESTS_DIR)/macros/vector $$(RISCV_CCFLAGS_GCC) $$(RISCV_LDFLAGS_GCC) -o $$@ $$< $(RUNTIME_GCC) $$(LD_FLAGS)
 	$$(RISCV_OBJDUMP) $$(RISCV_OBJDUMP_FLAGS) -D $$@ > [email protected]
 	$$(RISCV_STRIP) $$@ -S --strip-unneeded
 endef
@@ -124,7 +134,7 @@ TESTS_$(1) := $(addprefix bin/, $($(addsuffix _ara_tests, $1)))
 
 bin/$(1)-ara-%: $(TESTS_DIR)/$(1)/%.$(2) $(RUNTIME_LLVM) linker_script
 	mkdir -p bin/
-	$$(RISCV_CC) -Iinclude -I$$(TESTS_DIR)/macros/scalar -I$$(TESTS_DIR)/macros/vector $$(RISCV_CCFLAGS) $$(RISCV_LDFLAGS) -o $$@ $$< $(RUNTIME_LLVM) -T$$(CURDIR)/common/link.ld
+	$$(RISCV_CC) -Iinclude -I$$(TESTS_DIR)/macros/scalar -I$$(TESTS_DIR)/macros/vector $$(RISCV_CCFLAGS) $$(RISCV_LDFLAGS) -o $$@ $$< $(RUNTIME_LLVM) $$(LD_FLAGS)
 	$$(RISCV_OBJDUMP) $$(RISCV_OBJDUMP_FLAGS) -D $$@ > [email protected]
 	$$(RISCV_STRIP) $$@ -S --strip-unneeded
 endef
@@ -172,13 +182,14 @@ benchmarks_clean:
 
 .PHONY: clean
 clean: riscv_tests_spike_clean benchmarks_clean
+	rm -vf bin/*
 	rm -vf $(BINARIES)
 	rm -vf $(CVA6_BINARIES)
 	rm -vf $(ARA_BINARIES)
 	rm -vf $(addsuffix .dump,$(BINARIES))
 	rm -vf $(addsuffix .dump,$(CVA6_BINARIES))
 	rm -vf $(addsuffix .dump,$(ARA_BINARIES))
-	rm -vf $(addsuffix /main.c.o,$(APPS))
+	rm -vf $(addsuffix /main.c.o$(IS_LINUX_EXTENSION),$(APPS))
 	rm -vf $(RUNTIME_GCC)
 	rm -vf $(RUNTIME_LLVM)
 	rm -vf $(RUNTIME_SPIKE)

apps/common/linux.mk

@@ -0,0 +1,47 @@
+IS_LINUX_EXTENSION := .linux
+
+CVA6_SDK ?= /usr/scratch/fenga3/vmaisto/cva6-sdk_fork_backup
+ROOTFS_DEST ?= $(CVA6_SDK)/rootfs/ara/apps/bin
+cp_to_rootfs:
+	mkdir -p $(ROOTFS_DEST)
+	@echo "[Copying binaries to rootfs directory $(ROOTFS_DEST)]"
+	cp -v bin/*.linux $(ROOTFS_DEST)
+
+# Set the runtime variables to empty, the Linux libs will takcare of that
+LD_FLAGS     :=
+RUNTIME_GCC   ?= common/util-gcc.c.o
+RUNTIME_LLVM  ?= common/util-llvm.c.o
+
+
+# Override
+INSTALL_DIR             ?= $(ARA_DIR)/install
+GCC_INSTALL_DIR         ?= $(CVA6_SDK)/buildroot/output/host/
+LLVM_INSTALL_DIR        ?= $(INSTALL_DIR)/riscv-llvm
+
+RISCV_XLEN    ?= 64
+RISCV_ARCH    ?= rv$(RISCV_XLEN)gcv
+RISCV_ABI     ?= lp64d
+RISCV_TARGET  ?= riscv$(RISCV_XLEN)-buildroot-linux-gnu-
+
+# Don't use LLVM
+RISCV_PREFIX  ?= $(GCC_INSTALL_DIR)/bin/$(RISCV_TARGET)
+RISCV_CC      ?= $(RISCV_PREFIX)gcc
+RISCV_CXX     ?= $(RISCV_PREFIX)g++
+RISCV_OBJDUMP ?= $(RISCV_PREFIX)objdump
+RISCV_OBJCOPY ?= $(RISCV_PREFIX)objcopy
+RISCV_AS      ?= $(RISCV_PREFIX)as
+RISCV_AR      ?= $(RISCV_PREFIX)ar
+RISCV_LD      ?= $(RISCV_PREFIX)ld
+RISCV_STRIP   ?= $(RISCV_PREFIX)strip
+
+# Override flags
+# LLVM_FLAGS     ?= -march=rv64gcv_zfh_zvfh0p1 -mabi=$(RISCV_ABI) -mno-relax -fuse-ld=lld
+LLVM_FLAGS     ?= -march=rv64gcv -mabi=$(RISCV_ABI)
+LLVM_V_FLAGS   ?= #+no-optimized-zero-stride-load
+# RISCV_FLAGS    ?= $(LLVM_FLAGS) $(LLVM_V_FLAGS) -mcmodel=medany -I$(CURDIR)/common -std=gnu99 -O3 -ffast-math -fno-common -fno-builtin-printf $(DEFINES) $(RISCV_WARNINGS)
+RISCV_FLAGS    ?= -g $(LLVM_FLAGS) $(LLVM_V_FLAGS) -I$(CURDIR)/common -std=gnu99 -O0 $(DEFINES) $(RISCV_WARNINGS)
+RISCV_CCFLAGS  ?= $(RISCV_FLAGS) #-ffunction-sections -fdata-sections
+RISCV_CXXFLAGS ?= $(RISCV_FLAGS) -ffunction-sections -fdata-sections
+RISCV_LDFLAGS  ?= #-static -nostartfiles -lm -Wl,--gc-sections
+
+RISCV_OBJDUMP_FLAGS ?= -S

apps/common/printf.h

@@ -29,6 +29,10 @@
 //
 ///////////////////////////////////////////////////////////////////////////////
 
+#ifdef __linux__
+#include <stdio.h>
+#else // ! __linux__
+
 #ifndef _PRINTF_H_
 #define _PRINTF_H_
 
@@ -100,4 +104,5 @@ int fctprintf(void (*out)(char character, void *arg), void *arg,
 }
 #endif
 
+#endif // __linux__
 #endif // _PRINTF_H_

apps/common/runtime.h

@@ -7,13 +7,19 @@
   asm volatile(                                                                \
       "csrs mstatus, %[bits];" ::[bits] "r"(0x00000600 & (0x00000600 >> 1)))
 
+// SoC-level CSR, put in memory for Linux build
+#ifdef __linux__
+int64_t event_trigger;
+int64_t timer;
+uint64_t hw_cnt_en_reg;
+#else  // ! __linux__
 extern int64_t event_trigger;
 extern int64_t timer;
-// SoC-level CSR
 extern uint64_t hw_cnt_en_reg;
+#endif // __linux__
 
 // Return the current value of the cycle counter
-inline int64_t get_cycle_count() {
+int64_t get_cycle_count() {
   int64_t cycle_count;
   // The fence is needed to be sure that Ara is idle, and it is not performing
   // the last vector stores when we read mcycle with stop_timer()
@@ -31,26 +37,26 @@ inline int64_t get_cycle_count() {
 #define HW_CNT_READY hw_cnt_en_reg = 1;
 #define HW_CNT_NOT_READY hw_cnt_en_reg = 0;
 // Start and stop the counter
-inline void start_timer() { timer = -get_cycle_count(); }
-inline void stop_timer() { timer += get_cycle_count(); }
+void start_timer() { timer = -get_cycle_count(); }
+void stop_timer() { timer += get_cycle_count(); }
 
 // Get the value of the timer
-inline int64_t get_timer() { return timer; }
+int64_t get_timer() { return timer; }
 #else
 #define HW_CNT_READY ;
 #define HW_CNT_NOT_READY ;
 // Start and stop the counter
-inline void start_timer() {
+void start_timer() {
   while (0)
     ;
 }
-inline void stop_timer() {
+void stop_timer() {
   while (0)
     ;
 }
 
 // Get the value of the timer
-inline int64_t get_timer() { return 0; }
+int64_t get_timer() { return 0; }
 #endif
 
 #endif // _RUNTIME_H_

apps/common/runtime.mk

@@ -42,7 +42,7 @@ ISA_SIM_MOD_INSTALL_DIR ?= $(INSTALL_DIR)/riscv-isa-sim-mod
 RISCV_XLEN    ?= 64
 RISCV_ARCH    ?= rv$(RISCV_XLEN)gcv
 RISCV_ABI     ?= lp64d
-RISCV_TARGET  ?= riscv$(RISCV_XLEN)-unknown-elf
+RISCV_TARGET  ?= riscv$(RISCV_XLEN)-unknown-elf-
 
 # Use LLVM
 RISCV_PREFIX  ?= $(LLVM_INSTALL_DIR)/bin/
@@ -56,7 +56,9 @@ RISCV_LD      ?= $(RISCV_PREFIX)ld.lld
 RISCV_STRIP   ?= $(RISCV_PREFIX)llvm-strip
 
 # Use gcc to compile scalar riscv-tests
-RISCV_CC_GCC  ?= $(GCC_INSTALL_DIR)/bin/$(RISCV_TARGET)-gcc
+RISCV_CC_GCC  ?= $(GCC_INSTALL_DIR)/bin/$(RISCV_TARGET)gcc
+RISCV_OBJCOPY_GCC  ?= $(GCC_INSTALL_DIR)/bin/$(RISCV_TARGET)objcopy
+RISCV_OBJDUMP_GCC  ?= $(GCC_INSTALL_DIR)/bin/$(RISCV_TARGET)objdump
 
 # Benchmark with spike
 spike_env_dir ?= $(ARA_DIR)/apps/riscv-tests
@@ -111,6 +113,8 @@ RUNTIME_GCC   ?= common/crt0-gcc.S.o common/printf-gcc.c.o common/string-gcc.c.o
 RUNTIME_LLVM  ?= common/crt0-llvm.S.o common/printf-llvm.c.o common/string-llvm.c.o common/serial-llvm.c.o common/util-llvm.c.o
 RUNTIME_SPIKE ?= $(spike_env_dir)/benchmarks/common/crt.S.o.spike $(spike_env_dir)/benchmarks/common/syscalls.c.o.spike common/util.c.o.spike
 
+LD_FLAGS ?= -T$(CURDIR)/common/link.ld
+
 .INTERMEDIATE: $(RUNTIME_GCC) $(RUNTIME_LLVM)
 
 %-gcc.S.o: %.S
@@ -125,10 +129,10 @@ RUNTIME_SPIKE ?= $(spike_env_dir)/benchmarks/common/crt.S.o.spike $(spike_env_di
 %-llvm.c.o: %.c
 	$(RISCV_CC) $(RISCV_CCFLAGS) -c $< -o $@
 
-%.S.o: %.S
+%.S.o$(IS_LINUX_EXTENSION): %.S
 	$(RISCV_CC) $(RISCV_CCFLAGS) -c $< -o $@
 
-%.c.o: %.c
+%.c.o$(IS_LINUX_EXTENSION): %.c
 	$(RISCV_CC) $(RISCV_CCFLAGS) -c $< -o $@
 
 %.S.o.spike: %.S patch-spike-crt0

apps/dropout/kernel/dropout.h

@@ -27,8 +27,6 @@
 // Use asm, by default
 #undef INTRINSICS
 
-#include "runtime.h"
-
 #ifndef SPIKE
 #include "printf.h"
 #endif

apps/dropout/main.c

@@ -23,6 +23,17 @@
 
 #include "kernel/dropout.h"
 
+#include <stdint.h>
+#include <string.h>
+
+#include "runtime.h"
+
+#ifndef SPIKE
+#include "printf.h"
+#else
+#include <stdio.h>
+#endif
+
 extern const unsigned int N;
 extern const float SCALE;
 extern const float I[] __attribute__((aligned(4 * NR_LANES)));

apps/gemv/kernel/gemv.c

@@ -17,7 +17,6 @@
 // Author: Chi Zhang, ETH Zurich <[email protected]>
 
 #include "gemv.h"
-#include "runtime.h"
 #include "util.h"
 #include <math.h>
 #include <stdbool.h>

apps/jacobi2d/kernel/jacobi2d.h

@@ -77,15 +77,13 @@ WITH ACCESS OR USE OF THE SOFTWARE.
 
 #define _JACOBI2D_H_
 
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include <riscv_vector.h>
 
-#include "runtime.h"
-#include "util.h"
-
 // The vector algorithm seems not to be parametrized on the data type
 // So, don't change this parameter if also the vector implementation is used
 #define DATA_TYPE double

apps/riscv-tests/benchmarks/Makefile

@@ -35,20 +35,20 @@ bmarks = \
 # Build rules
 #--------------------------------------------------------------------
 
-RISCV_PREFIX ?= riscv$(XLEN)-unknown-elf-
+RISCV_PREFIX ?= /usr/scratch/fenga3/vmaisto/cva6-sdk_fork/buildroot/output/host/bin/riscv64-buildroot-linux-gnu-
 RISCV_GCC ?= $(RISCV_PREFIX)gcc
-RISCV_GCC_OPTS ?= -DPREALLOCATE=1 -mcmodel=medany -static -std=gnu99 -O2 -ffast-math -fno-common -fno-builtin-printf
-RISCV_LINK ?= $(RISCV_GCC) -T $(src_dir)/common/test.ld $(incs)
-RISCV_LINK_OPTS ?= -static -nostdlib -nostartfiles -lm -lgcc -T $(src_dir)/common/test.ld
-RISCV_OBJDUMP ?= $(RISCV_PREFIX)objdump --disassemble-all --disassemble-zeroes --section=.text --section=.text.startup --section=.text.init --section=.data
+RISCV_GCC_OPTS ?= -DPREALLOCATE=1 -mcmodel=medany -std=gnu99 -O2 -ffast-math -fPIC
+RISCV_LINK ?= $(RISCV_GCC)  $(incs)
+RISCV_LINK_OPTS ?=
+RISCV_OBJDUMP ?= $(RISCV_PREFIX)objdump --disassemble-all --disassemble-zeroes -S
 RISCV_SIM ?= spike --isa=rv$(XLEN)gc
 
 incs  += -I$(src_dir)/../env -I$(src_dir)/common $(addprefix -I$(src_dir)/, $(bmarks))
 objs  :=
 
 define compile_template
 $(1).riscv: $(wildcard $(src_dir)/$(1)/*) $(wildcard $(src_dir)/common/*)
-	$$(RISCV_GCC) $$(incs) $$(RISCV_GCC_OPTS) -o $$@ $(wildcard $(src_dir)/$(1)/*.c) $(wildcard $(src_dir)/common/*.c) $(wildcard $(src_dir)/common/*.S) $$(RISCV_LINK_OPTS)
+	$$(RISCV_GCC) $$(incs) $$(RISCV_GCC_OPTS) -o $$@ $(wildcard $(src_dir)/$(1)/*.c) $(wildcard $(src_dir)/common/*.c)  $$(RISCV_LINK_OPTS)
 endef
 
 $(foreach bmark,$(bmarks),$(eval $(call compile_template,$(bmark))))