Update SDK For E31/E51 Coreplex IP Evaluation

1 files changed, 175 insertions, 85 deletions

diff --git a/Makefile b/Makefile
index 22a5832..0e785dd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,100 +1,188 @@
-srcdir := $(dir $(realpath $(lastword $(MAKEFILE_LIST))))
-srcdir := $(srcdir:/=)
-wrkdir := $(CURDIR)/work
+#############################################################
+# Configuration
+#############################################################
 
-DEFAULT_BOARD := freedom-e300-hifive1
-DEFAULT_PROGRAM := demo_gpio
+# Allows users to create Makefile.local or ../Makefile.project with
+# configuration variables, so they don't have to be set on the command-line
+# every time.
+extra_configs := $(wildcard Makefile.local ../Makefile.project)
+ifneq ($(extra_configs),)
+$(info Obtaining additional make variables from $(extra_configs))
+include $(extra_configs)
+endif
+
+# Default target
+BOARD ?= freedom-e300-hifive1
+PROGRAM ?= demo_gpio
+
+# Variables the user probably shouldn't override.
+builddir := work/build
+installdir := work/install
+toolchain_srcdir := riscv-gnu-toolchain
+openocd_srcdir := openocd
 
 #############################################################
-# Prints help message
+# BSP Loading
 #############################################################
 
+# Finds the directory in which this BSP is located, ensuring that there is
+# exactly one.
+board_dir := $(wildcard bsp/env/$(BOARD))
+ifeq ($(words $(board_dir)),0)
+$(error Unable to find BSP for $(BOARD), expected to find either "bsp/$(BOARD)" or "bsp-addons/$(BOARD)")
+endif
+ifneq ($(words $(board_dir)),1)
+$(error Found multiple BSPs for $(BOARD): "$(board_dir)")
+endif
+
+# There must be a settings makefile fragment in the BSP's board directory.
+ifeq ($(wildcard $(board_dir)/settings.mk),)
+$(error Unable to find BSP for $(BOARD), expected to find $(board_dir)/settings.mk)
+endif
+include $(board_dir)/settings.mk
+
+ifeq ($(RISCV_ARCH),)
+$(error $(board_dir)/board.mk must set RISCV_ARCH, the RISC-V ISA string to target)
+endif
+
+ifeq ($(RISCV_ABI),)
+$(error $(board_dir)/board.mk must set RISCV_ABI, the ABI to target)
+endif
+
+# Determines the XLEN from the toolchain tuple
+ifeq ($(patsubst rv32%,rv32,$(RISCV_ARCH)),rv32)
+RISCV_XLEN := 32
+else ifeq ($(patsubst rv64%,rv64,$(RISCV_ARCH)),rv64)
+RISCV_XLEN := 64
+else
+$(error Unable to determine XLEN from $(RISCV_ARCH))
+endif
+
+#############################################################
+# Prints help message
+#############################################################
 .PHONY: help
-help :
+help:
 	@echo "  SiFive Freedom E Software Development Kit "
 	@echo "  Makefile targets:"
 	@echo ""
-	@echo " tools:"
-	@echo "    Install compilation & debugging tools."
+	@echo " tools [BOARD = $(BOARD)]:"
+	@echo "    Install compilation & debugging tools to target your desired board."
 	@echo ""
 	@echo " uninstall:"
 	@echo "    Uninstall the compilation & debugging tools."
 	@echo ""
-	@echo " software [PROGRAM=$(DEFAULT_PROGRAM) BOARD=$(DEFAULT_BOARD)]:"
+	@echo " software [PROGRAM=$(PROGRAM) BOARD=$(BOARD)]:"
 	@echo "    Build a software program to load with the"
 	@echo "    debugger."
 	@echo ""
-	@echo " upload [PROGRAM=$(DEFAULT_PROGRAM) BOARD=$(DEFAULT_BOARD)]:"
+	@echo " upload [PROGRAM=$(PROGRAM) BOARD=$(BOARD)]:"
 	@echo "    Launch OpenOCD to flash your program to the"
 	@echo "    on-board Flash."
 	@echo ""
-	@echo " run_debug [PROGRAM=$(DEFAULT_PROGRAM) BOARD=$(DEFAULT_BOARD)]:"
-	@echo "    Launch OpenOCD & GDB to load or debug "
-	@echo "    running programs. Does not allow Ctrl-C to halt running programs."
-	@echo ""
-	@echo " run_openocd [BOARD=$(DEFAULT_BOARD)]:"
-	@echo " run_gdb     [PROGRAM=$(DEFAULT_PROGRAM) BOARD=$(DEFAULT_BOARD)]:"
+	@echo " run_openocd [BOARD=$(BOARD)]:"
+	@echo " run_gdb     [PROGRAM=$(PROGRAM) BOARD=$(BOARD)]:"
 	@echo "     Launch OpenOCD or GDB seperately. Allows Ctrl-C to halt running"
 	@echo "     programs."
 	@echo ""
-	@echo " dasm [PROGRAM=$(DEFAULT_BOARD)]:"
+	@echo " dasm [PROGRAM=$(BOARD)]:"
 	@echo "     Generates the dissassembly output of 'objdump -D' to stdout."
 	@echo ""
 	@echo " For more information, visit dev.sifive.com"
 
+.PHONY: clean
+clean:
 
 #############################################################
 # This section is for tool installation
 #############################################################
-
-toolchain_srcdir := $(srcdir)/riscv-gnu-toolchain
-toolchain32_wrkdir := $(wrkdir)/riscv32-gnu-toolchain
-toolchain_dest := $(CURDIR)/toolchain
-PATH := $(toolchain_dest)/bin:$(PATH)
-
-openocd_srcdir := $(srcdir)/openocd
-openocd_wrkdir := $(wrkdir)/openocd
-openocd_dest := $(CURDIR)/toolchain
-
-target32 := riscv32-unknown-linux-gnu
-
-
-.PHONY: all
-all: tools
-	@echo All done.
-
-tools: tools32 openocd
-	@echo All Tools Installed
-
-tools32: $(toolchain_dest)/bin/$(target32)-gcc
-openocd: $(openocd_dest)/bin/openocd
-
-$(toolchain_dest)/bin/$(target32)-gcc: $(toolchain_srcdir)
-	mkdir -p $(toolchain32_wrkdir)
-	cd $(toolchain32_wrkdir); $(toolchain_srcdir)/configure --prefix=$(toolchain_dest) --with-arch=rv32imac --with-abi=ilp32
-	$(MAKE) -C $(toolchain32_wrkdir)
-
-$(openocd_dest)/bin/openocd: $(openocd_srcdir)
-	mkdir -p $(openocd_wrkdir)
-	cd $(openocd_srcdir); \
-	$(openocd_srcdir)/bootstrap
-	cd $(openocd_wrkdir); \
-	$(openocd_srcdir)/configure --prefix=$(openocd_dest)
-	$(MAKE) -C $(openocd_wrkdir)
-	$(MAKE) -C $(openocd_wrkdir) install
-
-.PHONY: uninstall
-uninstall:
-	rm -rf $(wrkdir)
-	rm -rf $(toolchain_dest)
+.PHONY: tools
+tools: riscv-gnu-toolchain openocd
+
+# Pointers to various important tools in the toolchain.
+toolchain_builddir := $(builddir)/riscv-gnu-toolchain/riscv64-unknown-elf
+toolchain_prefix := $(toolchain_builddir)/prefix
+
+RISCV_GCC     := $(abspath $(toolchain_prefix)/bin/riscv64-unknown-elf-gcc)
+RISCV_GXX     := $(abspath $(toolchain_prefix)/bin/riscv64-unknown-elf-g++)
+RISCV_OBJDUMP := $(abspath $(toolchain_prefix)/bin/riscv64-unknown-elf-objdump)
+RISCV_GDB     := $(abspath $(toolchain_prefix)/bin/riscv64-unknown-elf-gdb)
+RISCV_AR      := $(abspath $(toolchain_prefix)/bin/riscv64-unknown-elf-ar)
+
+PATH := $(abspath $(toolchain_prefix)/bin):$(PATH)
+
+$(RISCV_GCC) $(RISCV_GXX) $(RISCV_OBJDUMP) $(RISCV_GDB) $(RISCV_AR): $(toolchain_builddir)/install.stamp
+	touch -c $@
+
+# Builds riscv-gnu-toolchain, which contains GCC and all the supporting
+# software for C code.
+.PHONY: riscv-gnu-toolchain
+riscv-gnu-toolchain: $(RISCV_GCC) $(RISCV_GXX) $(RISCV_OBJDUMP) $(RISCV_GDB) $(RISCV_AR)
+
+$(builddir)/riscv-gnu-toolchain/%/install.stamp: $(builddir)/riscv-gnu-toolchain/%/build.stamp
+	$(MAKE) -C $(dir $@) install
+	date > $@
+
+$(builddir)/riscv-gnu-toolchain/%/build.stamp: $(builddir)/riscv-gnu-toolchain/%/configure.stamp
+	$(MAKE) -C $(dir $@)
+	date > $@
+
+$(builddir)/riscv-gnu-toolchain/%-elf/configure.stamp:
+	$(eval $@_TUPLE := $(patsubst $(builddir)/riscv-gnu-toolchain/%-elf/configure.stamp,%,$@))
+	rm -rf $(dir $@)
+	mkdir -p $(dir $@)
+	cd $(dir $@); $(abspath $(toolchain_srcdir)/configure) \
+		--prefix=$(abspath $(dir $@)/prefix) \
+		--disable-linux \
+		--enable-multilib \
+		--with-cmodel=medany \
+		--with-libgcc-cmodel
+	date > $@
+
+.PHONY: toolchain-clean
+clean: toolchain-clean
+toolchain-clean:
+	rm -rf $(toolchain_builddir)
+
+# Builds and installs OpenOCD, which translates GDB into JTAG for debugging and
+# initializing the target.
+openocd_builddir := $(builddir)/openocd
+openocd_prefix := $(openocd_builddir)/prefix
+RISCV_OPENOCD := $(openocd_prefix)/bin/openocd
+
+.PHONY: openocd
+openocd: $(RISCV_OPENOCD)
+
+$(RISCV_OPENOCD): $(openocd_builddir)/install.stamp
+	touch -c $@
+
+$(openocd_builddir)/install.stamp: $(openocd_builddir)/build.stamp
+	$(MAKE) -C $(dir $@) install
+	date > $@
+
+$(openocd_builddir)/build.stamp: $(openocd_builddir)/configure.stamp
+	$(MAKE) -C $(dir $@)
+	date > $@
+
+$(openocd_builddir)/configure.stamp:
+	rm -rf $(dir $@)
+	mkdir -p $(dir $@)
+	cd $(abspath $(openocd_srcdir)); autoreconf -i
+	cd $(dir $@); $(abspath $(openocd_srcdir)/configure) \
+		--prefix=$(abspath $(dir $@)/prefix) \
+		--disable-werror
+	date > $@
+
+.PHONY: openocd-clean
+clean: openocd-clean
+openocd-clean:
+	rm -rf $(openocd_builddir)
 
 #############################################################
 # This Section is for Software Compilation
 #############################################################
-BOARD ?= $(DEFAULT_BOARD)
-PROGRAM ?= $(DEFAULT_PROGRAM)
-PROGRAM_DIR = $(srcdir)/software/$(PROGRAM)
-PROGRAM_ELF = $(srcdir)/software/$(PROGRAM)/$(PROGRAM)
+PROGRAM_DIR = software/$(PROGRAM)
+PROGRAM_ELF = software/$(PROGRAM)/$(PROGRAM)
 
 .PHONY: software_clean
 software_clean:
@@ -102,41 +190,43 @@ software_clean:
 
 .PHONY: software
 software: software_clean
-	$(MAKE) -C $(PROGRAM_DIR)
+	$(MAKE) -C $(PROGRAM_DIR) CC=$(RISCV_GCC) RISCV_ARCH=$(RISCV_ARCH) RISCV_ABI=$(RISCV_ABI) AR=$(RISCV_AR) BSP_BASE=$(abspath bsp) BOARD=$(BOARD)
 
-dasm: software	
-	$(toolchain_dest)/bin/riscv32-unknown-elf-objdump -D $(PROGRAM_ELF)
+dasm: software $(RISCV_OBJDUMP)
+	$(RISCV_OBJDUMP) -D $(PROGRAM_ELF)
 
 #############################################################
 # This Section is for uploading a program to SPI Flash
 #############################################################
-OPENOCD_UPLOAD = $(srcdir)/bsp/tools/openocd_upload.sh
-OPENOCDCFG ?= $(srcdir)/bsp/env/$(BOARD)/openocd.cfg
+OPENOCD_UPLOAD = bsp/tools/openocd_upload.sh
+OPENOCDCFG ?= bsp/env/$(BOARD)/openocd.cfg
+OPENOCDARGS += -f $(OPENOCDCFG)
+
+GDB_UPLOAD_ARGS ?= --batch
+
+GDB_UPLOAD_CMDS += -ex "set remotetimeout 240"
+GDB_UPLOAD_CMDS += -ex "target extended-remote localhost:3333"
+GDB_UPLOAD_CMDS += -ex "monitor reset halt"
+GDB_UPLOAD_CMDS += -ex "monitor flash protect 0 64 last off"
+GDB_UPLOAD_CMDS += -ex "load"
+GDB_UPLOAD_CMDS += -ex "monitor resume"
+GDB_UPLOAD_CMDS += -ex "monitor shutdown"
+GDB_UPLOAD_CMDS += -ex "quit"
 
 upload:
-	$(OPENOCD_UPLOAD) $(PROGRAM_ELF) $(OPENOCDCFG)
+	$(RISCV_OPENOCD) $(OPENOCDARGS) & \
+	$(RISCV_GDB) $(PROGRAM_DIR)/$(PROGRAM) $(GDB_UPLOAD_ARGS) $(GDB_UPLOAD_CMDS);\
+	echo "Successfully uploaded '$(PROGRAM)' to $(BOARD)."
 
 #############################################################
 # This Section is for launching the debugger
 #############################################################
 
-OPENOCD     = $(toolchain_dest)/bin/openocd
-OPENOCDARGS += -f $(OPENOCDCFG)
+run_openocd:
+	$(RISCV_OPENOCD) $(OPENOCDARGS)
 
-GDB     = $(toolchain_dest)/bin/riscv32-unknown-elf-gdb
+GDBCMDS += -ex "set remotetimeout 240"
 GDBCMDS += -ex "target extended-remote localhost:3333"
-GDBARGS =
-
-run_openocd:
-	$(OPENOCD) $(OPENOCDARGS)
 
 run_gdb:
-	$(GDB) $(PROGRAM_DIR)/$(PROGRAM) $(GDBARGS)
-
-run_debug:
-	$(OPENOCD) $(OPENOCDARGS) &
-	$(GDB) $(PROGRAM_DIR)/$(PROGRAM) $(GDBARGS) $(GDBCMDS)
-
-.PHONY: clean
-clean:
-	rm -rf -- $(wrkdir) 
+	$(RISCV_GDB) $(PROGRAM_DIR)/$(PROGRAM) $(GDBARGS) $(GDBCMDS)