Merge pull request #235 from sifive/u54-rtl

Add Multicore Support

8 files changed, 2012 insertions, 0 deletions

diff --git a/bsp/sifive-hifive-unleashed/README.md b/bsp/sifive-hifive-unleashed/README.md
new file mode 100644
index 0000000..1349a86
--- /dev/null
+++ b/bsp/sifive-hifive-unleashed/README.md
@@ -0,0 +1,19 @@
+# SiFive HiFive Unleashed
+
+The SiFive HiFive Unleashed features an FU540-C000 SoC with the U54-MC Core IP.
+
+## Configuring MSEL
+
+The mode select switches should be set as follows:
+```
+      USB   LED    Mode Select                  Ethernet
+ +===|___|==****==+-+-+-+-+-+-+=================|******|===+
+ |                | | | |X|X|X|                 |      |   |
+ |                | | | | | | |                 |      |   |
+ |        HFXSEL->|X|X|X| | | |                 |______|   |
+ |                +-+-+-+-+-+-+                            |
+ |        RTCSEL-----/ 0 1 2 3 <--MSEL                     |
+ |                                                         |
+```
+
+This will cause the board to boot from the SPI flash at 0x2000\_0000.
diff --git a/bsp/sifive-hifive-unleashed/design.dts b/bsp/sifive-hifive-unleashed/design.dts
new file mode 100644
index 0000000..ee6897f
--- /dev/null
+++ b/bsp/sifive-hifive-unleashed/design.dts
@@ -0,0 +1,627 @@
+/dts-v1/;
+
+/ {
+	#address-cells = <2>;
+	#size-cells = <2>;
+	compatible = "sifive,fu540g", "sifive,fu500";
+	model = "sifive,hifive-unleashed-a00";
+
+	aliases {
+		serial0 = &L28;
+		serial1 = &L29;
+	};
+
+	chosen {
+		stdout-path = "/soc/serial@10010000:115200";
+	};
+
+	firmware {
+		sifive,fsbl = "YYYY-MM-DD";
+	};
+
+	L3: cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		timebase-frequency = <1000000>;
+		L9: cpu@0 {
+			clock-frequency = <0>;
+			compatible = "sifive,rocket0", "riscv";
+			device_type = "cpu";
+			i-cache-block-size = <64>;
+			i-cache-sets = <128>;
+			i-cache-size = <16384>;
+			next-level-cache = <&L24 &L0>;
+			reg = <0>;
+			riscv,isa = "rv64imac";
+			sifive,dtim = <&L8>;
+			sifive,itim = <&L7>;
+			status = "okay";
+			L10: interrupt-controller {
+				#interrupt-cells = <1>;
+				compatible = "riscv,cpu-intc";
+				interrupt-controller;
+			};
+		};
+		L12: cpu@1 {
+			clock-frequency = <0>;
+			compatible = "sifive,rocket0", "riscv";
+			d-cache-block-size = <64>;
+			d-cache-sets = <64>;
+			d-cache-size = <32768>;
+			d-tlb-sets = <1>;
+			d-tlb-size = <32>;
+			device_type = "cpu";
+			i-cache-block-size = <64>;
+			i-cache-sets = <64>;
+			i-cache-size = <32768>;
+			i-tlb-sets = <1>;
+			i-tlb-size = <32>;
+			mmu-type = "riscv,sv39";
+			next-level-cache = <&L24 &L0>;
+			reg = <1>;
+			riscv,isa = "rv64imafdc";
+			sifive,itim = <&L11>;
+			status = "okay";
+			tlb-split;
+			L13: interrupt-controller {
+				#interrupt-cells = <1>;
+				compatible = "riscv,cpu-intc";
+				interrupt-controller;
+			};
+		};
+		L15: cpu@2 {
+			clock-frequency = <0>;
+			compatible = "sifive,rocket0", "riscv";
+			d-cache-block-size = <64>;
+			d-cache-sets = <64>;
+			d-cache-size = <32768>;
+			d-tlb-sets = <1>;
+			d-tlb-size = <32>;
+			device_type = "cpu";
+			i-cache-block-size = <64>;
+			i-cache-sets = <64>;
+			i-cache-size = <32768>;
+			i-tlb-sets = <1>;
+			i-tlb-size = <32>;
+			mmu-type = "riscv,sv39";
+			next-level-cache = <&L24 &L0>;
+			reg = <2>;
+			riscv,isa = "rv64imafdc";
+			sifive,itim = <&L14>;
+			status = "okay";
+			tlb-split;
+			L16: interrupt-controller {
+				#interrupt-cells = <1>;
+				compatible = "riscv,cpu-intc";
+				interrupt-controller;
+			};
+		};
+		L18: cpu@3 {
+			clock-frequency = <0>;
+			compatible = "sifive,rocket0", "riscv";
+			d-cache-block-size = <64>;
+			d-cache-sets = <64>;
+			d-cache-size = <32768>;
+			d-tlb-sets = <1>;
+			d-tlb-size = <32>;
+			device_type = "cpu";
+			i-cache-block-size = <64>;
+			i-cache-sets = <64>;
+			i-cache-size = <32768>;
+			i-tlb-sets = <1>;
+			i-tlb-size = <32>;
+			mmu-type = "riscv,sv39";
+			next-level-cache = <&L24 &L0>;
+			reg = <3>;
+			riscv,isa = "rv64imafdc";
+			sifive,itim = <&L17>;
+			status = "okay";
+			tlb-split;
+			L19: interrupt-controller {
+				#interrupt-cells = <1>;
+				compatible = "riscv,cpu-intc";
+				interrupt-controller;
+			};
+		};
+		L21: cpu@4 {
+			clock-frequency = <0>;
+			compatible = "sifive,rocket0", "riscv";
+			d-cache-block-size = <64>;
+			d-cache-sets = <64>;
+			d-cache-size = <32768>;
+			d-tlb-sets = <1>;
+			d-tlb-size = <32>;
+			device_type = "cpu";
+			i-cache-block-size = <64>;
+			i-cache-sets = <64>;
+			i-cache-size = <32768>;
+			i-tlb-sets = <1>;
+			i-tlb-size = <32>;
+			mmu-type = "riscv,sv39";
+			next-level-cache = <&L24 &L0>;
+			reg = <4>;
+			riscv,isa = "rv64imafdc";
+			sifive,itim = <&L20>;
+			status = "okay";
+			tlb-split;
+			L22: interrupt-controller {
+				#interrupt-cells = <1>;
+				compatible = "riscv,cpu-intc";
+				interrupt-controller;
+			};
+		};
+	};
+	L36: memory@80000000 {
+		device_type = "memory";
+		reg = <0x0 0x80000000 0x1f 0x80000000>;
+	};
+	L2: soc {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		compatible = "SiFive,FU540G-soc", "fu500-soc", "sifive-soc", "simple-bus";
+		ranges;
+		pmp: pmp@0 {
+			compatible = "riscv,pmp";
+			regions = <1>;
+		};
+		refclk: refclk {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <33333333>;
+			clock-output-names = "xtal";
+		};
+		prci: prci@10000000 {
+			compatible = "sifive,ux00prci0";
+			reg = <0x0 0x10000000 0x0 0x1000>;
+			reg-names = "control";
+			clocks = <&refclk>;
+			#clock-cells = <1>;
+		};
+		tlclk: tlclk {
+			compatible = "fixed-factor-clock";
+			clocks = <&refclk>;
+			#clock-cells = <0>;
+			clock-div = <2>;
+			clock-mult = <1>;
+		};
+		L51: cadence-gemgxl-mgmt@100a0000 {
+			compatible = "sifive,cadencegemgxlmgmt0";
+			reg = <0x0 0x100a0000 0x0 0x1000>;
+			reg-names = "control";
+			#clock-cells = <0>;
+		};
+		L35: bus-blocker@100b8000 {
+			compatible = "sifive,bus-blocker0";
+			reg = <0x0 0x100b8000 0x0 0x1000>;
+			reg-names = "control";
+		};
+		L0: cache-controller@2010000 {
+			cache-block-size = <64>;
+			cache-level = <2>;
+			cache-sets = <2048>;
+			cache-size = <2097152>;
+			cache-unified;
+			compatible = "sifive,ccache0", "cache";
+			interrupt-parent = <&L4>;
+			interrupts = <1 2 3>;
+			next-level-cache = <&L25 &L40 &L36>;
+			reg = <0x0 0x2010000 0x0 0x1000 0x0 0x8000000 0x0 0x2000000>;
+			reg-names = "control", "sideband";
+		};
+		L33: cadence-ddr-mgmt@100c0000 {
+			compatible = "sifive,cadenceddrmgmt0";
+			reg = <0x0 0x100c0000 0x0 0x1000>;
+			reg-names = "control";
+		};
+		L40: chiplink@40000000 {
+			#address-cells = <2>;
+			#size-cells = <2>;
+			compatible = "sifive,chiplink", "simple-bus";
+			ranges = <0x0 0x60000000 0x0 0x60000000 0x0 0x20000000 0x30 0x0 0x30 0x0 0x10 0x0 0x0 0x40000000 0x0 0x40000000 0x0 0x20000000 0x20 0x0 0x20 0x0 0x10 0x0>;
+		};
+		L5: clint@2000000 {
+			compatible = "riscv,clint0";
+			interrupts-extended = <&L10 3 &L10 7 &L13 3 &L13 7 &L16 3 &L16 7 &L19 3 &L19 7 &L22 3 &L22 7>;
+			reg = <0x0 0x2000000 0x0 0x10000>;
+			reg-names = "control";
+		};
+		L6: debug-controller@0 {
+			compatible = "sifive,debug-013", "riscv,debug-013";
+			interrupts-extended = <&L10 65535 &L13 65535 &L16 65535 &L19 65535 &L22 65535>;
+			reg = <0x0 0x0 0x0 0x1000>;
+			reg-names = "control";
+		};
+		L32: dma@3000000 {
+			#dma-cells = <1>;
+			compatible = "riscv,dma0";
+			dma-channels = <4>;
+			dma-requests = <0>;
+			interrupt-parent = <&L4>;
+			interrupts = <23 24 25 26 27 28 29 30>;
+			reg = <0x0 0x3000000 0x0 0x100000>;
+			reg-names = "control";
+			riscv,dma-pools = <1>;
+		};
+		L8: dtim@1000000 {
+			compatible = "sifive,dtim0";
+			reg = <0x0 0x1000000 0x0 0x2000>;
+			reg-names = "mem";
+		};
+		L44: ememoryotp@10070000 {
+			compatible = "sifive,ememoryotp0";
+			reg = <0x0 0x10070000 0x0 0x1000>;
+			reg-names = "control";
+		};
+		L24: error-device@18000000 {
+			compatible = "sifive,error0";
+			reg = <0x0 0x18000000 0x0 0x8000000>;
+			reg-names = "mem";
+		};
+		L52: ethernet@10090000 {
+			compatible = "cdns,macb";
+			interrupt-parent = <&L4>;
+			interrupts = <53>;
+			reg = <0x0 0x10090000 0x0 0x2000>;
+			reg-names = "control";
+
+			local-mac-address = [00 00 00 00 00 00];
+			phy-mode = "gmii";
+			clock-names = "pclk", "hclk", "tx_clk";
+			clocks = <&prci 1>, <&prci 1>, <&L51>;
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+			phy1: ethernet-phy@0 {
+				reg = <0>;
+				reset-gpios = <&L31 12 1>;
+			};
+		};
+		L31: gpio@10060000 {
+			compatible = "sifive,gpio0";
+			interrupt-parent = <&L4>;
+			interrupts = <7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22>;
+			reg = <0x0 0x10060000 0x0 0x1000>;
+			reg-names = "control";
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+		gpio-restart {
+			compatible = "gpio-restart";
+			gpios = <&L31 10 1>;
+		};
+		L47: i2c@10030000 {
+			compatible = "sifive,i2c0", "opencores,i2c-ocores";
+			reg = <0x0 0x10030000 0x0 0x1000>;
+			reg-names = "control";
+			clocks = <&tlclk>;
+
+			reg-shift = <2>;
+			reg-io-width = <1>;
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			/* On pre-production boards only */
+/*
+			ina233-vdd_soc_core@40 {
+				compatible = "ti,pmbus";
+				reg = <0x40>;
+			};
+			ina233-vdd_ddr_soc@44 {
+				compatible = "ti,pmbus";
+				reg = <0x44>;
+			};
+			ina233-vdd_ddr_mem@45 {
+				compatible = "ti,pmbus";
+				reg = <0x45>;
+			};
+			ina233-vdd_corepll@47 {
+				compatible = "ti,pmbus";
+				reg = <0x47>;
+			};
+			ina233-vdd_otp@4a {
+				compatible = "ti,pmbus";
+				reg = <0x4a>;
+			};
+			ina233-vdd_io@4b {
+				compatible = "ti,pmbus";
+				reg = <0x4b>;
+			};
+			ina233-vdd_ddrpll@48 {
+				compatible = "ti,pmbus";
+				reg = <0x48>;
+			};
+			ina233-avdd_ddrpll@49 {
+				compatible = "ti,pmbus";
+				reg = <0x49>;
+			};
+			ina233-vdd_givdd@4c {
+				compatible = "ti,pmbus";
+				reg = <0x4c>;
+			};
+			ina233vdd_gemgxlpll@4d {
+				compatible = "ti,pmbus";
+				reg = <0x4d>;
+			};
+*/
+			/* On the tester board */
+/*
+			m24c02 {
+				compatible = "st,24c02";
+				reg = <0x51>;
+			};
+*/
+		};
+		L4: interrupt-controller@c000000 {
+			#interrupt-cells = <1>;
+			compatible = "riscv,plic0";
+			interrupt-controller;
+			interrupts-extended = <&L10 11 &L13 11 &L13 9 &L16 11 &L16 9 &L19 11 &L19 9 &L22 11 &L22 9>;
+			reg = <0x0 0xc000000 0x0 0x4000000>;
+			reg-names = "control";
+			riscv,max-priority = <7>;
+			riscv,ndev = <53>;
+		};
+		L7: itim@1800000 {
+			compatible = "sifive,itim0";
+			reg = <0x0 0x1800000 0x0 0x4000>;
+			reg-names = "mem";
+		};
+		L11: itim@1808000 {
+			compatible = "sifive,itim0";
+			reg = <0x0 0x1808000 0x0 0x8000>;
+			reg-names = "mem";
+		};
+		L14: itim@1810000 {
+			compatible = "sifive,itim0";
+			reg = <0x0 0x1810000 0x0 0x8000>;
+			reg-names = "mem";
+		};
+		L17: itim@1818000 {
+			compatible = "sifive,itim0";
+			reg = <0x0 0x1818000 0x0 0x8000>;
+			reg-names = "mem";
+		};
+		L20: itim@1820000 {
+			compatible = "sifive,itim0";
+			reg = <0x0 0x1820000 0x0 0x8000>;
+			reg-names = "mem";
+		};
+		L37: memory-controller@100b0000 {
+			compatible = "sifive,ux00ddr0";
+			interrupt-parent = <&L4>;
+			interrupts = <31>;
+			reg = <0x0 0x100b0000 0x0 0x4000>;
+			reg-names = "control";
+		};
+		pci@2000000000 {
+			#address-cells = <3>;
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			compatible = "xlnx,axi-pcie-host-1.00.a";
+			device_type = "pci";
+			interrupt-map = <0 0 0 1 &xil_pcie_intc 1 0 0 0 2 &xil_pcie_intc 2 0 0 0 3 &xil_pcie_intc 3 0 0 0 4 &xil_pcie_intc 4>;
+			interrupt-map-mask = <0 0 0 7>;
+			interrupt-parent = <&L4>;
+			interrupts = <32>;
+			ranges = <0x2000000 0x0 0x40000000 0x0 0x40000000 0x0 0x20000000>;
+			reg = <0x020 0x0 0x0 0x4000000>;
+			reg-names = "control";
+			xil_pcie_intc: interrupt-controller {
+				#address-cells = <0>;
+				#interrupt-cells = <1>;
+				interrupt-controller;
+			};
+		};
+		pci@2030000000 {
+			#address-cells = <3>;
+			#interrupt-cells = <1>;
+			#size-cells = <2>;
+			compatible = "ms-pf,axi-pcie-host";
+			device_type = "pci";
+			bus-range = <0x01 0x7f>;
+			interrupt-map = <0 0 0 1 &ms_pcie_intc 1 0 0 0 2 &ms_pcie_intc 2 0 0 0 3 &ms_pcie_intc 3 0 0 0 4 &ms_pcie_intc 4>;
+			interrupt-map-mask = <0 0 0 7>;
+			interrupt-parent = <&L4>;
+			interrupts = <32>;
+			ranges = <0x2000000 0x0 0x40000000 0x0 0x40000000 0x0 0x20000000>;
+			reg = <0x20 0x30000000 0x0 0x4000000 0x20 0x0 0x0 0x100000>;
+			reg-names = "control", "apb";
+			ms_pcie_intc: interrupt-controller {
+				#address-cells = <0>;
+				#interrupt-cells = <1>;
+				interrupt-controller;
+			};
+		};
+		L53: pinctrl@10080000 {
+			compatible = "sifive,pinctrl0";
+			reg = <0x0 0x10080000 0x0 0x1000>;
+			reg-names = "control";
+		};
+		L45: pwm@10020000 {
+			compatible = "sifive,pwm0";
+			interrupt-parent = <&L4>;
+			interrupts = <42 43 44 45>;
+			reg = <0x0 0x10020000 0x0 0x1000>;
+			reg-names = "control";
+			clocks = <&tlclk>;
+			sifive,approx-period = <1000000>;
+			#pwm-cells = <2>;
+		};
+		L46: pwm@10021000 {
+			compatible = "sifive,pwm0";
+			interrupt-parent = <&L4>;
+			interrupts = <46 47 48 49>;
+			reg = <0x0 0x10021000 0x0 0x1000>;
+			reg-names = "control";
+			clocks = <&tlclk>;
+			sifive,approx-period = <1000000>;
+			#pwm-cells = <2>;
+		};
+		pwmleds {
+			compatible = "pwm-leds";
+			heartbeat {
+				pwms = <&L45 0 0>;
+				max-brightness = <255>;
+				linux,default-trigger = "heartbeat";
+			};
+			mtd {
+				pwms = <&L45 1 0>;
+				max-brightness = <255>;
+				linux,default-trigger = "mtd";
+			};
+			netdev {
+				pwms = <&L45 2 0>;
+				max-brightness = <255>;
+				linux,default-trigger = "netdev";
+			};
+			panic {
+				pwms = <&L45 3 0>;
+				max-brightness = <255>;
+				linux,default-trigger = "panic";
+			};
+			/* These LEDs are on the tester board */
+/*
+			testled {
+				pwms = <&L46 0 0>;
+				max-brightness = <255>;
+			};
+			green {
+				pwms = <&L46 1 0>;
+				max-brightness = <255>;
+			};
+			red {
+				pwms = <&L46 2 0>;
+				max-brightness = <255>;
+			};
+			blue {
+				pwms = <&L46 3 0>;
+				max-brightness = <255>;
+			};
+*/
+		};
+		L27: rom@1000 {
+			compatible = "sifive,modeselect0";
+			reg = <0x0 0x1000 0x0 0x1000>;
+			reg-names = "mem";
+		};
+		L26: rom@10000 {
+			compatible = "sifive,maskrom0";
+			reg = <0x0 0x10000 0x0 0x8000>;
+			reg-names = "mem";
+		};
+		L25: rom@a000000 {
+			compatible = "ucbbar,cacheable-zero0";
+			reg = <0x0 0xa000000 0x0 0x2000000>;
+			reg-names = "mem";
+		};
+		L28: serial@10010000 {
+			compatible = "sifive,uart0";
+			interrupt-parent = <&L4>;
+			interrupts = <4>;
+			reg = <0x0 0x10010000 0x0 0x1000>;
+			reg-names = "control";
+			clocks = <&tlclk>;
+		};
+		L29: serial@10011000 {
+			compatible = "sifive,uart0";
+			interrupt-parent = <&L4>;
+			interrupts = <5>;
+			reg = <0x0 0x10011000 0x0 0x1000>;
+			reg-names = "control";
+			clocks = <&tlclk>;
+		};
+		L49: spi@10040000 {
+			compatible = "sifive,spi0";
+			interrupt-parent = <&L4>;
+			interrupts = <51>;
+			reg = <0x0 0x10040000 0x0 0x1000 0x0 0x20000000 0x0 0x10000000>;
+			reg-names = "control", "mem";
+			clocks = <&tlclk>;
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+			flash@0 {
+				compatible = "issi,is25wp256d", "jedec,spi-nor";
+				reg = <0>;
+				spi-max-frequency = <50000000>;
+				m25p,fast-read;
+				spi-tx-bus-width = <4>;
+				spi-rx-bus-width = <4>;
+			};
+		};
+		L50: spi@10041000 {
+			compatible = "sifive,spi0";
+			interrupt-parent = <&L4>;
+			interrupts = <52>;
+			reg = <0x0 0x10041000 0x0 0x1000 0x0 0x30000000 0x0 0x10000000>;
+			reg-names = "control", "mem";
+			clocks = <&tlclk>;
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			/* These flash chips are on the tester board */
+/*
+			flash@0 {
+				compatible = "issi,is25wp032", "jedec,spi-nor";
+				reg = <0>;
+				spi-max-frequency = <25000000>;
+				m25p,fast-read;
+				spi-tx-bus-width = <4>;
+				spi-rx-bus-width = <4>;
+			};
+			flash@1 {
+				compatible = "issi,is25wp032", "jedec,spi-nor";
+				reg = <1>;
+				spi-max-frequency = <25000000>;
+				m25p,fast-read;
+				spi-tx-bus-width = <4>;
+				spi-rx-bus-width = <4>;
+			};
+			flash@2 {
+				compatible = "issi,is25wp032", "jedec,spi-nor";
+				reg = <2>;
+				spi-max-frequency = <25000000>;
+				m25p,fast-read;
+				spi-tx-bus-width = <4>;
+				spi-rx-bus-width = <4>;
+			};
+			flash@3 {
+				compatible = "issi,is25wp032", "jedec,spi-nor";
+				reg = <3>;
+				spi-max-frequency = <25000000>;
+				m25p,fast-read;
+				spi-tx-bus-width = <4>;
+				spi-rx-bus-width = <4>;
+			};
+*/
+		};
+		L30: spi@10050000 {
+			compatible = "sifive,spi0";
+			interrupt-parent = <&L4>;
+			interrupts = <6>;
+			reg = <0x0 0x10050000 0x0 0x1000>;
+			reg-names = "control";
+			clocks = <&tlclk>;
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+			mmc@0 {
+				compatible = "mmc-spi-slot";
+				reg = <0>;
+				spi-max-frequency = <20000000>;
+				voltage-ranges = <3300 3300>;
+				disable-wp;
+				gpios = <&L31 11 1>;
+			};
+		};
+		L23: teststatus@4000 {
+			compatible = "sifive,test0";
+			reg = <0x0 0x4000 0x0 0x1000>;
+			reg-names = "control";
+		};
+	};
+};
diff --git a/bsp/sifive-hifive-unleashed/metal.default.lds b/bsp/sifive-hifive-unleashed/metal.default.lds
new file mode 100644
index 0000000..61b2203
--- /dev/null
+++ b/bsp/sifive-hifive-unleashed/metal.default.lds
@@ -0,0 +1,231 @@
+OUTPUT_ARCH("riscv")
+
+ENTRY(_enter)
+
+MEMORY
+{
+	ram (wxa!ri) : ORIGIN = 0x80000000, LENGTH = 0x80000000
+	itim (wx!rai) : ORIGIN = 0x1800000, LENGTH = 0x4000
+	flash (rxai!w) : ORIGIN = 0x20000000, LENGTH = 0x10000000
+}
+
+PHDRS
+{
+	flash PT_LOAD;
+	ram_init PT_LOAD;
+	itim_init PT_LOAD;
+	ram PT_NULL;
+	itim PT_NULL;
+}
+
+SECTIONS
+{
+	__stack_size = DEFINED(__stack_size) ? __stack_size : 0x400;
+	PROVIDE(__stack_size = __stack_size);
+	__heap_size = DEFINED(__heap_size) ? __heap_size : 0x400;
+
+
+	.init 		:
+	{
+		KEEP (*(.text.metal.init.enter))
+		KEEP (*(SORT_NONE(.init)))
+		KEEP (*(.text.libgloss.start))
+	} >flash AT>flash :flash
+
+
+	.text 		:
+	{
+		*(.text.unlikely .text.unlikely.*)
+		*(.text.startup .text.startup.*)
+		*(.text .text.*)
+		*(.gnu.linkonce.t.*)
+	} >flash AT>flash :flash
+
+
+	.fini 		:
+	{
+		KEEP (*(SORT_NONE(.fini)))
+	} >flash AT>flash :flash
+
+
+	PROVIDE (__etext = .);
+	PROVIDE (_etext = .);
+	PROVIDE (etext = .);
+
+
+	.rodata 		:
+	{
+		*(.rdata)
+		*(.rodata .rodata.*)
+		*(.gnu.linkonce.r.*)
+	} >flash AT>flash :flash
+
+
+	. = ALIGN(4);
+
+
+	.preinit_array 		:
+	{
+		PROVIDE_HIDDEN (__preinit_array_start = .);
+		KEEP (*(.preinit_array))
+		PROVIDE_HIDDEN (__preinit_array_end = .);
+	} >flash AT>flash :flash
+
+
+	.init_array 		:
+	{
+		PROVIDE_HIDDEN (__init_array_start = .);
+		KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
+		KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
+		PROVIDE_HIDDEN (__init_array_end = .);
+	} >flash AT>flash :flash
+
+
+	.finit_array 		:
+	{
+		PROVIDE_HIDDEN (__finit_array_start = .);
+		KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
+		KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
+		PROVIDE_HIDDEN (__finit_array_end = .);
+	} >flash AT>flash :flash
+
+
+	.ctors 		:
+	{
+		/* gcc uses crtbegin.o to find the start of
+		   the constructors, so we make sure it is
+		   first.  Because this is a wildcard, it
+		   doesn't matter if the user does not
+		   actually link against crtbegin.o; the
+		   linker won't look for a file to match a
+		   wildcard.  The wildcard also means that it
+		   doesn't matter which directory crtbegin.o
+		   is in.  */
+		KEEP (*crtbegin.o(.ctors))
+		KEEP (*crtbegin?.o(.ctors))
+		/* We don't want to include the .ctor section from
+		   the crtend.o file until after the sorted ctors.
+		   The .ctor section from the crtend file contains the
+		   end of ctors marker and it must be last */
+		KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
+		KEEP (*(SORT(.ctors.*)))
+		KEEP (*(.ctors))
+	} >flash AT>flash :flash
+
+
+	.dtors 		:
+	{
+		KEEP (*crtbegin.o(.dtors))
+		KEEP (*crtbegin?.o(.dtors))
+		KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
+		KEEP (*(SORT(.dtors.*)))
+		KEEP (*(.dtors))
+	} >flash AT>flash :flash
+
+
+	.litimalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( metal_segment_itim_source_start = . );
+	} >flash AT>flash :flash
+
+
+	.ditimalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( metal_segment_itim_target_start = . );
+	} >itim AT>flash :itim_init
+
+
+	.itim 		:
+	{
+		*(.itim .itim.*)
+	} >itim AT>flash :itim_init
+
+
+	. = ALIGN(8);
+	PROVIDE( metal_segment_itim_target_end = . );
+
+
+	.lalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( _data_lma = . );
+		PROVIDE( metal_segment_data_source_start = . );
+	} >flash AT>flash :flash
+
+
+	.dalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( metal_segment_data_target_start = . );
+	} >ram AT>flash :ram_init
+
+
+	.data 		:
+	{
+		*(.data .data.*)
+		*(.gnu.linkonce.d.*)
+		. = ALIGN(8);
+		PROVIDE( __global_pointer$ = . + 0x800 );
+		*(.sdata .sdata.* .sdata2.*)
+		*(.gnu.linkonce.s.*)
+		. = ALIGN(8);
+		*(.srodata.cst16)
+		*(.srodata.cst8)
+		*(.srodata.cst4)
+		*(.srodata.cst2)
+		*(.srodata .srodata.*)
+	} >ram AT>flash :ram_init
+
+
+	. = ALIGN(4);
+	PROVIDE( _edata = . );
+	PROVIDE( edata = . );
+	PROVIDE( metal_segment_data_target_end = . );
+	PROVIDE( _fbss = . );
+	PROVIDE( __bss_start = . );
+	PROVIDE( metal_segment_bss_target_start = . );
+
+
+	.bss 		:
+	{
+		*(.sbss*)
+		*(.gnu.linkonce.sb.*)
+		*(.bss .bss.*)
+		*(.gnu.linkonce.b.*)
+		*(COMMON)
+		. = ALIGN(4);
+	} >ram AT>ram :ram
+
+
+	. = ALIGN(8);
+	PROVIDE( _end = . );
+	PROVIDE( end = . );
+	PROVIDE( metal_segment_bss_target_end = . );
+
+
+	.stack :
+	{
+		PROVIDE(metal_segment_stack_begin = .);
+		. = __stack_size;
+		PROVIDE( _sp = . );
+		. = __stack_size;
+		. = __stack_size;
+		. = __stack_size;
+		. = __stack_size;
+		PROVIDE(metal_segment_stack_end = .);
+	} >ram AT>ram :ram
+
+
+	.heap :
+	{
+		PROVIDE( metal_segment_heap_target_start = . );
+		. = __heap_size;
+		PROVIDE( metal_segment_heap_target_end = . );
+		PROVIDE( _heap_end = . );
+	} >ram AT>ram :ram
+
+
+}
+
diff --git a/bsp/sifive-hifive-unleashed/metal.h b/bsp/sifive-hifive-unleashed/metal.h
new file mode 100644
index 0000000..b7a329b
--- /dev/null
+++ b/bsp/sifive-hifive-unleashed/metal.h
@@ -0,0 +1,647 @@
+#ifndef ASSEMBLY
+
+#ifndef SIFIVE_HIFIVE_UNLEASHED__METAL_H
+#define SIFIVE_HIFIVE_UNLEASHED__METAL_H
+
+#ifdef __METAL_MACHINE_MACROS
+
+#define __METAL_CLINT_NUM_PARENTS 10
+
+#ifndef __METAL_CLINT_NUM_PARENTS
+#define __METAL_CLINT_NUM_PARENTS 0
+#endif
+#define __METAL_PLIC_SUBINTERRUPTS 54
+
+#define __METAL_PLIC_NUM_PARENTS 9
+
+#ifndef __METAL_PLIC_SUBINTERRUPTS
+#define __METAL_PLIC_SUBINTERRUPTS 0
+#endif
+#ifndef __METAL_PLIC_NUM_PARENTS
+#define __METAL_PLIC_NUM_PARENTS 0
+#endif
+#ifndef __METAL_CLIC_SUBINTERRUPTS
+#define __METAL_CLIC_SUBINTERRUPTS 0
+#endif
+
+#else /* ! __METAL_MACHINE_MACROS */
+
+#define __METAL_CLINT_2000000_INTERRUPTS 10
+
+#define METAL_MAX_CLINT_INTERRUPTS 10
+
+#define __METAL_CLINT_NUM_PARENTS 10
+
+#define __METAL_INTERRUPT_CONTROLLER_C000000_INTERRUPTS 9
+
+#define __METAL_PLIC_SUBINTERRUPTS 54
+
+#define METAL_MAX_PLIC_INTERRUPTS 9
+
+#define __METAL_PLIC_NUM_PARENTS 9
+
+#define __METAL_CLIC_SUBINTERRUPTS 0
+#define METAL_MAX_CLIC_INTERRUPTS 0
+
+#define METAL_MAX_LOCAL_EXT_INTERRUPTS 0
+
+#define METAL_MAX_GLOBAL_EXT_INTERRUPTS 0
+
+#define __METAL_GPIO_10060000_INTERRUPTS 16
+
+#define METAL_MAX_GPIO_INTERRUPTS 16
+
+#define __METAL_SERIAL_10010000_INTERRUPTS 1
+
+#define __METAL_SERIAL_10011000_INTERRUPTS 1
+
+#define METAL_MAX_UART_INTERRUPTS 1
+
+
+#include <metal/drivers/fixed-clock.h>
+#include <metal/drivers/fixed-factor-clock.h>
+#include <metal/memory.h>
+#include <metal/drivers/riscv,clint0.h>
+#include <metal/drivers/riscv,cpu.h>
+#include <metal/drivers/riscv,plic0.h>
+#include <metal/pmp.h>
+#include <metal/drivers/sifive,gpio0.h>
+#include <metal/drivers/sifive,spi0.h>
+#include <metal/drivers/sifive,test0.h>
+#include <metal/drivers/sifive,uart0.h>
+#include <metal/drivers/sifive,fu540-c000,l2.h>
+
+/* From refclk */
+asm (".weak __metal_dt_refclk");
+struct __metal_driver_fixed_clock __metal_dt_refclk;
+
+/* From tlclk */
+asm (".weak __metal_dt_tlclk");
+struct __metal_driver_fixed_factor_clock __metal_dt_tlclk;
+
+asm (".weak __metal_dt_mem_dtim_1000000");
+struct metal_memory __metal_dt_mem_dtim_1000000;
+
+asm (".weak __metal_dt_mem_itim_1800000");
+struct metal_memory __metal_dt_mem_itim_1800000;
+
+asm (".weak __metal_dt_mem_itim_1808000");
+struct metal_memory __metal_dt_mem_itim_1808000;
+
+asm (".weak __metal_dt_mem_itim_1810000");
+struct metal_memory __metal_dt_mem_itim_1810000;
+
+asm (".weak __metal_dt_mem_itim_1818000");
+struct metal_memory __metal_dt_mem_itim_1818000;
+
+asm (".weak __metal_dt_mem_itim_1820000");
+struct metal_memory __metal_dt_mem_itim_1820000;
+
+asm (".weak __metal_dt_mem_memory_80000000");
+struct metal_memory __metal_dt_mem_memory_80000000;
+
+asm (".weak __metal_dt_mem_spi_10040000");
+struct metal_memory __metal_dt_mem_spi_10040000;
+
+asm (".weak __metal_dt_mem_spi_10041000");
+struct metal_memory __metal_dt_mem_spi_10041000;
+
+asm (".weak __metal_dt_mem_spi_10050000");
+struct metal_memory __metal_dt_mem_spi_10050000;
+
+/* From clint@2000000 */
+asm (".weak __metal_dt_clint_2000000");
+struct __metal_driver_riscv_clint0 __metal_dt_clint_2000000;
+
+/* From cpu@0 */
+asm (".weak __metal_dt_cpu_0");
+struct __metal_driver_cpu __metal_dt_cpu_0;
+
+/* From cpu@1 */
+asm (".weak __metal_dt_cpu_1");
+struct __metal_driver_cpu __metal_dt_cpu_1;
+
+/* From cpu@2 */
+asm (".weak __metal_dt_cpu_2");
+struct __metal_driver_cpu __metal_dt_cpu_2;
+
+/* From cpu@3 */
+asm (".weak __metal_dt_cpu_3");
+struct __metal_driver_cpu __metal_dt_cpu_3;
+
+/* From cpu@4 */
+asm (".weak __metal_dt_cpu_4");
+struct __metal_driver_cpu __metal_dt_cpu_4;
+
+asm (".weak __metal_dt_cpu_0_interrupt_controller");
+struct __metal_driver_riscv_cpu_intc __metal_dt_cpu_0_interrupt_controller;
+
+asm (".weak __metal_dt_cpu_1_interrupt_controller");
+struct __metal_driver_riscv_cpu_intc __metal_dt_cpu_1_interrupt_controller;
+
+asm (".weak __metal_dt_cpu_2_interrupt_controller");
+struct __metal_driver_riscv_cpu_intc __metal_dt_cpu_2_interrupt_controller;
+
+asm (".weak __metal_dt_cpu_3_interrupt_controller");
+struct __metal_driver_riscv_cpu_intc __metal_dt_cpu_3_interrupt_controller;
+
+asm (".weak __metal_dt_cpu_4_interrupt_controller");
+struct __metal_driver_riscv_cpu_intc __metal_dt_cpu_4_interrupt_controller;
+
+/* From interrupt_controller@c000000 */
+asm (".weak __metal_dt_interrupt_controller_c000000");
+struct __metal_driver_riscv_plic0 __metal_dt_interrupt_controller_c000000;
+
+asm (".weak __metal_dt_pmp_0");
+struct metal_pmp __metal_dt_pmp_0;
+
+/* From gpio@10060000 */
+asm (".weak __metal_dt_gpio_10060000");
+struct __metal_driver_sifive_gpio0 __metal_dt_gpio_10060000;
+
+/* From spi@10040000 */
+asm (".weak __metal_dt_spi_10040000");
+struct __metal_driver_sifive_spi0 __metal_dt_spi_10040000;
+
+/* From spi@10041000 */
+asm (".weak __metal_dt_spi_10041000");
+struct __metal_driver_sifive_spi0 __metal_dt_spi_10041000;
+
+/* From spi@10050000 */
+asm (".weak __metal_dt_spi_10050000");
+struct __metal_driver_sifive_spi0 __metal_dt_spi_10050000;
+
+/* From teststatus@4000 */
+asm (".weak __metal_dt_teststatus_4000");
+struct __metal_driver_sifive_test0 __metal_dt_teststatus_4000;
+
+/* From serial@10010000 */
+asm (".weak __metal_dt_serial_10010000");
+struct __metal_driver_sifive_uart0 __metal_dt_serial_10010000;
+
+/* From serial@10011000 */
+asm (".weak __metal_dt_serial_10011000");
+struct __metal_driver_sifive_uart0 __metal_dt_serial_10011000;
+
+/* From cache_controller@2010000 */
+asm (".weak __metal_dt_cache_controller_2010000");
+struct __metal_driver_sifive_fu540_c000_l2 __metal_dt_cache_controller_2010000;
+
+
+/* From refclk */
+struct __metal_driver_fixed_clock __metal_dt_refclk = {
+    .vtable = &__metal_driver_vtable_fixed_clock,
+    .clock.vtable = &__metal_driver_vtable_fixed_clock.clock,
+    .rate = 33333333UL,
+};
+
+/* From tlclk */
+struct __metal_driver_fixed_factor_clock __metal_dt_tlclk = {
+    .vtable = &__metal_driver_vtable_fixed_factor_clock,
+    .clock.vtable = &__metal_driver_vtable_fixed_factor_clock.clock,
+/* From refclk */
+    .parent = &__metal_dt_refclk.clock,
+    .mult = 1,
+    .div = 2,
+};
+
+struct metal_memory __metal_dt_mem_dtim_1000000 = {
+    ._base_address = 16777216UL,
+    ._size = 8192UL,
+    ._attrs = {
+        .R = 1,
+        .W = 1,
+        .X = 1,
+        .C = 1,
+        .A = 1},
+};
+
+struct metal_memory __metal_dt_mem_itim_1800000 = {
+    ._base_address = 25165824UL,
+    ._size = 16384UL,
+    ._attrs = {
+        .R = 1,
+        .W = 1,
+        .X = 1,
+        .C = 1,
+        .A = 1},
+};
+
+struct metal_memory __metal_dt_mem_itim_1808000 = {
+    ._base_address = 25198592UL,
+    ._size = 32768UL,
+    ._attrs = {
+        .R = 1,
+        .W = 1,
+        .X = 1,
+        .C = 1,
+        .A = 1},
+};
+
+struct metal_memory __metal_dt_mem_itim_1810000 = {
+    ._base_address = 25231360UL,
+    ._size = 32768UL,
+    ._attrs = {
+        .R = 1,
+        .W = 1,
+        .X = 1,
+        .C = 1,
+        .A = 1},
+};
+
+struct metal_memory __metal_dt_mem_itim_1818000 = {
+    ._base_address = 25264128UL,
+    ._size = 32768UL,
+    ._attrs = {
+        .R = 1,
+        .W = 1,
+        .X = 1,
+        .C = 1,
+        .A = 1},
+};
+
+struct metal_memory __metal_dt_mem_itim_1820000 = {
+    ._base_address = 25296896UL,
+    ._size = 32768UL,
+    ._attrs = {
+        .R = 1,
+        .W = 1,
+        .X = 1,
+        .C = 1,
+        .A = 1},
+};
+
+struct metal_memory __metal_dt_mem_memory_80000000 = {
+    ._base_address = 2147483648UL,
+    ._size = 135291469824UL,
+    ._attrs = {
+        .R = 1,
+        .W = 1,
+        .X = 1,
+        .C = 1,
+        .A = 1},
+};
+
+struct metal_memory __metal_dt_mem_spi_10040000 = {
+    ._base_address = 536870912UL,
+    ._size = 268435456UL,
+    ._attrs = {
+        .R = 1,
+        .W = 1,
+        .X = 1,
+        .C = 1,
+        .A = 1},
+};
+
+struct metal_memory __metal_dt_mem_spi_10041000 = {
+    ._base_address = 805306368UL,
+    ._size = 268435456UL,
+    ._attrs = {
+        .R = 1,
+        .W = 1,
+        .X = 1,
+        .C = 1,
+        .A = 1},
+};
+
+struct metal_memory __metal_dt_mem_spi_10050000 = {
+    ._attrs = {
+        .R = 1,
+        .W = 1,
+        .X = 1,
+        .C = 1,
+        .A = 1},
+};
+
+/* From clint@2000000 */
+struct __metal_driver_riscv_clint0 __metal_dt_clint_2000000 = {
+    .vtable = &__metal_driver_vtable_riscv_clint0,
+    .controller.vtable = &__metal_driver_vtable_riscv_clint0.clint_vtable,
+    .control_base = 33554432UL,
+    .control_size = 65536UL,
+    .init_done = 0,
+    .num_interrupts = METAL_MAX_CLINT_INTERRUPTS,
+    .interrupt_parents[0] = &__metal_dt_cpu_0_interrupt_controller.controller,
+    .interrupt_lines[0] = 3,
+    .interrupt_parents[1] = &__metal_dt_cpu_0_interrupt_controller.controller,
+    .interrupt_lines[1] = 7,
+    .interrupt_parents[2] = &__metal_dt_cpu_1_interrupt_controller.controller,
+    .interrupt_lines[2] = 3,
+    .interrupt_parents[3] = &__metal_dt_cpu_1_interrupt_controller.controller,
+    .interrupt_lines[3] = 7,
+    .interrupt_parents[4] = &__metal_dt_cpu_2_interrupt_controller.controller,
+    .interrupt_lines[4] = 3,
+    .interrupt_parents[5] = &__metal_dt_cpu_2_interrupt_controller.controller,
+    .interrupt_lines[5] = 7,
+    .interrupt_parents[6] = &__metal_dt_cpu_3_interrupt_controller.controller,
+    .interrupt_lines[6] = 3,
+    .interrupt_parents[7] = &__metal_dt_cpu_3_interrupt_controller.controller,
+    .interrupt_lines[7] = 7,
+    .interrupt_parents[8] = &__metal_dt_cpu_4_interrupt_controller.controller,
+    .interrupt_lines[8] = 3,
+    .interrupt_parents[9] = &__metal_dt_cpu_4_interrupt_controller.controller,
+    .interrupt_lines[9] = 7,
+};
+
+/* From cpu@0 */
+struct __metal_driver_cpu __metal_dt_cpu_0 = {
+    .vtable = &__metal_driver_vtable_cpu,
+    .cpu.vtable = &__metal_driver_vtable_cpu.cpu_vtable,
+    .timebase = 1000000UL,
+    .interrupt_controller = &__metal_dt_cpu_0_interrupt_controller.controller,
+};
+
+/* From cpu@1 */
+struct __metal_driver_cpu __metal_dt_cpu_1 = {
+    .vtable = &__metal_driver_vtable_cpu,
+    .cpu.vtable = &__metal_driver_vtable_cpu.cpu_vtable,
+    .timebase = 1000000UL,
+    .interrupt_controller = &__metal_dt_cpu_1_interrupt_controller.controller,
+};
+
+/* From cpu@2 */
+struct __metal_driver_cpu __metal_dt_cpu_2 = {
+    .vtable = &__metal_driver_vtable_cpu,
+    .cpu.vtable = &__metal_driver_vtable_cpu.cpu_vtable,
+    .timebase = 1000000UL,
+    .interrupt_controller = &__metal_dt_cpu_2_interrupt_controller.controller,
+};
+
+/* From cpu@3 */
+struct __metal_driver_cpu __metal_dt_cpu_3 = {
+    .vtable = &__metal_driver_vtable_cpu,
+    .cpu.vtable = &__metal_driver_vtable_cpu.cpu_vtable,
+    .timebase = 1000000UL,
+    .interrupt_controller = &__metal_dt_cpu_3_interrupt_controller.controller,
+};
+
+/* From cpu@4 */
+struct __metal_driver_cpu __metal_dt_cpu_4 = {
+    .vtable = &__metal_driver_vtable_cpu,
+    .cpu.vtable = &__metal_driver_vtable_cpu.cpu_vtable,
+    .timebase = 1000000UL,
+    .interrupt_controller = &__metal_dt_cpu_4_interrupt_controller.controller,
+};
+
+/* From interrupt_controller */
+struct __metal_driver_riscv_cpu_intc __metal_dt_cpu_0_interrupt_controller = {
+    .vtable = &__metal_driver_vtable_riscv_cpu_intc,
+    .controller.vtable = &__metal_driver_vtable_riscv_cpu_intc.controller_vtable,
+    .init_done = 0,
+    .interrupt_controller = 1,
+};
+
+/* From interrupt_controller */
+struct __metal_driver_riscv_cpu_intc __metal_dt_cpu_1_interrupt_controller = {
+    .vtable = &__metal_driver_vtable_riscv_cpu_intc,
+    .controller.vtable = &__metal_driver_vtable_riscv_cpu_intc.controller_vtable,
+    .init_done = 0,
+    .interrupt_controller = 1,
+};
+
+/* From interrupt_controller */
+struct __metal_driver_riscv_cpu_intc __metal_dt_cpu_2_interrupt_controller = {
+    .vtable = &__metal_driver_vtable_riscv_cpu_intc,
+    .controller.vtable = &__metal_driver_vtable_riscv_cpu_intc.controller_vtable,
+    .init_done = 0,
+    .interrupt_controller = 1,
+};
+
+/* From interrupt_controller */
+struct __metal_driver_riscv_cpu_intc __metal_dt_cpu_3_interrupt_controller = {
+    .vtable = &__metal_driver_vtable_riscv_cpu_intc,
+    .controller.vtable = &__metal_driver_vtable_riscv_cpu_intc.controller_vtable,
+    .init_done = 0,
+    .interrupt_controller = 1,
+};
+
+/* From interrupt_controller */
+struct __metal_driver_riscv_cpu_intc __metal_dt_cpu_4_interrupt_controller = {
+    .vtable = &__metal_driver_vtable_riscv_cpu_intc,
+    .controller.vtable = &__metal_driver_vtable_riscv_cpu_intc.controller_vtable,
+    .init_done = 0,
+    .interrupt_controller = 1,
+};
+
+/* From interrupt_controller@c000000 */
+struct __metal_driver_riscv_plic0 __metal_dt_interrupt_controller_c000000 = {
+    .vtable = &__metal_driver_vtable_riscv_plic0,
+    .controller.vtable = &__metal_driver_vtable_riscv_plic0.plic_vtable,
+    .init_done = 0,
+    .interrupt_parents[0] = &__metal_dt_cpu_0_interrupt_controller.controller,
+    .interrupt_lines[0] = 11,
+    .interrupt_parents[1] = &__metal_dt_cpu_1_interrupt_controller.controller,
+    .interrupt_lines[1] = 11,
+    .interrupt_parents[2] = &__metal_dt_cpu_1_interrupt_controller.controller,
+    .interrupt_lines[2] = 9,
+    .interrupt_parents[3] = &__metal_dt_cpu_2_interrupt_controller.controller,
+    .interrupt_lines[3] = 11,
+    .interrupt_parents[4] = &__metal_dt_cpu_2_interrupt_controller.controller,
+    .interrupt_lines[4] = 9,
+    .interrupt_parents[5] = &__metal_dt_cpu_3_interrupt_controller.controller,
+    .interrupt_lines[5] = 11,
+    .interrupt_parents[6] = &__metal_dt_cpu_3_interrupt_controller.controller,
+    .interrupt_lines[6] = 9,
+    .interrupt_parents[7] = &__metal_dt_cpu_4_interrupt_controller.controller,
+    .interrupt_lines[7] = 11,
+    .interrupt_parents[8] = &__metal_dt_cpu_4_interrupt_controller.controller,
+    .interrupt_lines[8] = 9,
+    .control_base = 201326592UL,
+    .control_size = 67108864UL,
+    .max_priority = 7UL,
+    .num_interrupts = 54UL,
+    .interrupt_controller = 1,
+};
+
+/* From pmp@0 */
+struct metal_pmp __metal_dt_pmp_0 = {
+    .num_regions = 1UL,
+};
+
+/* From gpio@10060000 */
+struct __metal_driver_sifive_gpio0 __metal_dt_gpio_10060000 = {
+    .vtable = &__metal_driver_vtable_sifive_gpio0,
+    .gpio.vtable = &__metal_driver_vtable_sifive_gpio0.gpio,
+    .base = 268828672UL,
+    .size = 4096UL,
+/* From interrupt_controller@c000000 */
+    .interrupt_parent = &__metal_dt_interrupt_controller_c000000.controller,
+    .num_interrupts = METAL_MAX_GPIO_INTERRUPTS,
+    .interrupt_lines[0] = 7,
+    .interrupt_lines[1] = 8,
+    .interrupt_lines[2] = 9,
+    .interrupt_lines[3] = 10,
+    .interrupt_lines[4] = 11,
+    .interrupt_lines[5] = 12,
+    .interrupt_lines[6] = 13,
+    .interrupt_lines[7] = 14,
+    .interrupt_lines[8] = 15,
+    .interrupt_lines[9] = 16,
+    .interrupt_lines[10] = 17,
+    .interrupt_lines[11] = 18,
+    .interrupt_lines[12] = 19,
+    .interrupt_lines[13] = 20,
+    .interrupt_lines[14] = 21,
+    .interrupt_lines[15] = 22,
+};
+
+/* From spi@10040000 */
+struct __metal_driver_sifive_spi0 __metal_dt_spi_10040000 = {
+    .vtable = &__metal_driver_vtable_sifive_spi0,
+    .spi.vtable = &__metal_driver_vtable_sifive_spi0.spi,
+    .control_base = 268697600UL,
+    .control_size = 4096UL,
+/* From tlclk */
+    .clock = &__metal_dt_tlclk.clock,
+    .pinmux = NULL,
+};
+
+/* From spi@10041000 */
+struct __metal_driver_sifive_spi0 __metal_dt_spi_10041000 = {
+    .vtable = &__metal_driver_vtable_sifive_spi0,
+    .spi.vtable = &__metal_driver_vtable_sifive_spi0.spi,
+    .control_base = 268701696UL,
+    .control_size = 4096UL,
+/* From tlclk */
+    .clock = &__metal_dt_tlclk.clock,
+    .pinmux = NULL,
+};
+
+/* From spi@10050000 */
+struct __metal_driver_sifive_spi0 __metal_dt_spi_10050000 = {
+    .vtable = &__metal_driver_vtable_sifive_spi0,
+    .spi.vtable = &__metal_driver_vtable_sifive_spi0.spi,
+    .control_base = 268763136UL,
+    .control_size = 4096UL,
+/* From tlclk */
+    .clock = &__metal_dt_tlclk.clock,
+    .pinmux = NULL,
+};
+
+/* From teststatus@4000 */
+struct __metal_driver_sifive_test0 __metal_dt_teststatus_4000 = {
+    .vtable = &__metal_driver_vtable_sifive_test0,
+    .shutdown.vtable = &__metal_driver_vtable_sifive_test0.shutdown,
+    .base = 16384UL,
+    .size = 4096UL,
+};
+
+/* From serial@10010000 */
+struct __metal_driver_sifive_uart0 __metal_dt_serial_10010000 = {
+    .vtable = &__metal_driver_vtable_sifive_uart0,
+    .uart.vtable = &__metal_driver_vtable_sifive_uart0.uart,
+    .control_base = 268500992UL,
+    .control_size = 4096UL,
+/* From tlclk */
+    .clock = &__metal_dt_tlclk.clock,
+    .pinmux = NULL,
+/* From interrupt_controller@c000000 */
+    .interrupt_parent = &__metal_dt_interrupt_controller_c000000.controller,
+    .num_interrupts = METAL_MAX_UART_INTERRUPTS,
+    .interrupt_line = 4UL,
+};
+
+/* From serial@10011000 */
+struct __metal_driver_sifive_uart0 __metal_dt_serial_10011000 = {
+    .vtable = &__metal_driver_vtable_sifive_uart0,
+    .uart.vtable = &__metal_driver_vtable_sifive_uart0.uart,
+    .control_base = 268505088UL,
+    .control_size = 4096UL,
+/* From tlclk */
+    .clock = &__metal_dt_tlclk.clock,
+    .pinmux = NULL,
+/* From interrupt_controller@c000000 */
+    .interrupt_parent = &__metal_dt_interrupt_controller_c000000.controller,
+    .num_interrupts = METAL_MAX_UART_INTERRUPTS,
+    .interrupt_line = 5UL,
+};
+
+/* From cache_controller@2010000 */
+struct __metal_driver_sifive_fu540_c000_l2 __metal_dt_cache_controller_2010000 = {
+    .vtable = &__metal_driver_vtable_sifive_fu540_c000_l2,
+    .cache.vtable = &__metal_driver_vtable_sifive_fu540_c000_l2.cache,
+};
+
+
+#define __METAL_DT_MAX_MEMORIES 9
+
+asm (".weak __metal_memory_table");
+struct metal_memory *__metal_memory_table[] = {
+					&__metal_dt_mem_dtim_1000000,
+					&__metal_dt_mem_itim_1800000,
+					&__metal_dt_mem_itim_1808000,
+					&__metal_dt_mem_itim_1810000,
+					&__metal_dt_mem_itim_1818000,
+					&__metal_dt_mem_itim_1820000,
+					&__metal_dt_mem_memory_80000000,
+					&__metal_dt_mem_spi_10040000,
+					&__metal_dt_mem_spi_10041000};
+
+/* From serial@10010000 */
+#define __METAL_DT_STDOUT_UART_HANDLE (&__metal_dt_serial_10010000.uart)
+
+#define __METAL_DT_SERIAL_10010000_HANDLE (&__metal_dt_serial_10010000.uart)
+
+#define __METAL_DT_STDOUT_UART_BAUD 115200
+
+/* From clint@2000000 */
+#define __METAL_DT_RISCV_CLINT0_HANDLE (&__metal_dt_clint_2000000.controller)
+
+#define __METAL_DT_CLINT_2000000_HANDLE (&__metal_dt_clint_2000000.controller)
+
+#define __METAL_DT_MAX_HARTS 5
+
+asm (".weak __metal_cpu_table");
+struct __metal_driver_cpu *__metal_cpu_table[] = {
+					&__metal_dt_cpu_0,
+					&__metal_dt_cpu_1,
+					&__metal_dt_cpu_2,
+					&__metal_dt_cpu_3,
+					&__metal_dt_cpu_4};
+
+/* From interrupt_controller@c000000 */
+#define __METAL_DT_RISCV_PLIC0_HANDLE (&__metal_dt_interrupt_controller_c000000.controller)
+
+#define __METAL_DT_INTERRUPT_CONTROLLER_C000000_HANDLE (&__metal_dt_interrupt_controller_c000000.controller)
+
+/* From pmp@0 */
+#define __METAL_DT_PMP_HANDLE (&__metal_dt_pmp_0)
+
+#define __MEE_DT_MAX_GPIOS 1
+
+asm (".weak __metal_gpio_table");
+struct __metal_driver_sifive_gpio0 *__metal_gpio_table[] = {
+					&__metal_dt_gpio_10060000};
+
+#define __METAL_DT_MAX_BUTTONS 0
+
+asm (".weak __metal_button_table");
+struct __metal_driver_sifive_gpio_button *__metal_button_table[] = {
+					NULL };
+#define __METAL_DT_MAX_LEDS 0
+
+asm (".weak __metal_led_table");
+struct __metal_driver_sifive_gpio_led *__metal_led_table[] = {
+					NULL };
+#define __METAL_DT_MAX_SWITCHES 0
+
+asm (".weak __metal_switch_table");
+struct __metal_driver_sifive_gpio_switch *__metal_switch_table[] = {
+					NULL };
+#define __METAL_DT_MAX_SPIS 3
+
+asm (".weak __metal_spi_table");
+struct __metal_driver_sifive_spi0 *__metal_spi_table[] = {
+					&__metal_dt_spi_10040000,
+					&__metal_dt_spi_10041000,
+					&__metal_dt_spi_10050000};
+
+/* From teststatus@4000 */
+#define __METAL_DT_SHUTDOWN_HANDLE (&__metal_dt_teststatus_4000.shutdown)
+
+#define __METAL_DT_TESTSTATUS_4000_HANDLE (&__metal_dt_teststatus_4000.shutdown)
+
+
+#endif /* ! __METAL_MACHINE_MACROS */
+#endif /* SIFIVE_HIFIVE_UNLEASHED__METAL_H*/
+#endif /* ! ASSEMBLY */
diff --git a/bsp/sifive-hifive-unleashed/metal.ramrodata.lds b/bsp/sifive-hifive-unleashed/metal.ramrodata.lds
new file mode 100644
index 0000000..b57aaf7
--- /dev/null
+++ b/bsp/sifive-hifive-unleashed/metal.ramrodata.lds
@@ -0,0 +1,228 @@
+OUTPUT_ARCH("riscv")
+
+ENTRY(_enter)
+
+MEMORY
+{
+	ram (wxa!ri) : ORIGIN = 0x80000000, LENGTH = 0x80000000
+	itim (wx!rai) : ORIGIN = 0x1800000, LENGTH = 0x4000
+	flash (rxai!w) : ORIGIN = 0x20000000, LENGTH = 0x10000000
+}
+
+PHDRS
+{
+	flash PT_LOAD;
+	ram_init PT_LOAD;
+	itim_init PT_LOAD;
+	ram PT_NULL;
+	itim PT_NULL;
+}
+
+SECTIONS
+{
+	__stack_size = DEFINED(__stack_size) ? __stack_size : 0x400;
+	PROVIDE(__stack_size = __stack_size);
+	__heap_size = DEFINED(__heap_size) ? __heap_size : 0x400;
+
+
+	.init 		:
+	{
+		KEEP (*(.text.metal.init.enter))
+		KEEP (*(SORT_NONE(.init)))
+		KEEP (*(.text.libgloss.start))
+	} >flash AT>flash :flash
+
+
+
+
+	.fini 		:
+	{
+		KEEP (*(SORT_NONE(.fini)))
+	} >flash AT>flash :flash
+
+
+	PROVIDE (__etext = .);
+	PROVIDE (_etext = .);
+	PROVIDE (etext = .);
+
+
+
+
+	. = ALIGN(4);
+
+
+	.preinit_array 		:
+	{
+		PROVIDE_HIDDEN (__preinit_array_start = .);
+		KEEP (*(.preinit_array))
+		PROVIDE_HIDDEN (__preinit_array_end = .);
+	} >flash AT>flash :flash
+
+
+	.init_array 		:
+	{
+		PROVIDE_HIDDEN (__init_array_start = .);
+		KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
+		KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
+		PROVIDE_HIDDEN (__init_array_end = .);
+	} >flash AT>flash :flash
+
+
+	.finit_array 		:
+	{
+		PROVIDE_HIDDEN (__finit_array_start = .);
+		KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
+		KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
+		PROVIDE_HIDDEN (__finit_array_end = .);
+	} >flash AT>flash :flash
+
+
+	.ctors 		:
+	{
+		/* gcc uses crtbegin.o to find the start of
+		   the constructors, so we make sure it is
+		   first.  Because this is a wildcard, it
+		   doesn't matter if the user does not
+		   actually link against crtbegin.o; the
+		   linker won't look for a file to match a
+		   wildcard.  The wildcard also means that it
+		   doesn't matter which directory crtbegin.o
+		   is in.  */
+		KEEP (*crtbegin.o(.ctors))
+		KEEP (*crtbegin?.o(.ctors))
+		/* We don't want to include the .ctor section from
+		   the crtend.o file until after the sorted ctors.
+		   The .ctor section from the crtend file contains the
+		   end of ctors marker and it must be last */
+		KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
+		KEEP (*(SORT(.ctors.*)))
+		KEEP (*(.ctors))
+	} >flash AT>flash :flash
+
+
+	.dtors 		:
+	{
+		KEEP (*crtbegin.o(.dtors))
+		KEEP (*crtbegin?.o(.dtors))
+		KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
+		KEEP (*(SORT(.dtors.*)))
+		KEEP (*(.dtors))
+	} >flash AT>flash :flash
+
+
+	.litimalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( metal_segment_itim_source_start = . );
+	} >flash AT>flash :flash
+
+
+	.ditimalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( metal_segment_itim_target_start = . );
+	} >itim AT>flash :itim_init
+
+
+	.itim 		:
+	{
+		*(.itim .itim.*)
+	} >itim AT>flash :itim_init
+
+
+	. = ALIGN(8);
+	PROVIDE( metal_segment_itim_target_end = . );
+	.text 		:
+	{
+		*(.text.unlikely .text.unlikely.*)
+		*(.text.startup .text.startup.*)
+		*(.text .text.*)
+		*(.gnu.linkonce.t.*)
+	} >flash AT>flash :flash
+
+
+	.lalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( _data_lma = . );
+		PROVIDE( metal_segment_data_source_start = . );
+	} >flash AT>flash :flash
+
+
+	.dalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( metal_segment_data_target_start = . );
+	} >ram AT>flash :ram_init
+
+
+	.data 		:
+	{
+		*(.rdata)
+		*(.rodata .rodata.*)
+		*(.gnu.linkonce.r.*)
+		*(.data .data.*)
+		*(.gnu.linkonce.d.*)
+		. = ALIGN(8);
+		PROVIDE( __global_pointer$ = . + 0x800 );
+		*(.sdata .sdata.* .sdata2.*)
+		*(.gnu.linkonce.s.*)
+		. = ALIGN(8);
+		*(.srodata.cst16)
+		*(.srodata.cst8)
+		*(.srodata.cst4)
+		*(.srodata.cst2)
+		*(.srodata .srodata.*)
+	} >ram AT>flash :ram_init
+
+
+	. = ALIGN(4);
+	PROVIDE( _edata = . );
+	PROVIDE( edata = . );
+	PROVIDE( metal_segment_data_target_end = . );
+	PROVIDE( _fbss = . );
+	PROVIDE( __bss_start = . );
+	PROVIDE( metal_segment_bss_target_start = . );
+
+
+	.bss 		:
+	{
+		*(.sbss*)
+		*(.gnu.linkonce.sb.*)
+		*(.bss .bss.*)
+		*(.gnu.linkonce.b.*)
+		*(COMMON)
+		. = ALIGN(4);
+	} >ram AT>ram :ram
+
+
+	. = ALIGN(8);
+	PROVIDE( _end = . );
+	PROVIDE( end = . );
+	PROVIDE( metal_segment_bss_target_end = . );
+
+
+	.stack :
+	{
+		PROVIDE(metal_segment_stack_begin = .);
+		. = __stack_size;
+		PROVIDE( _sp = . );
+		. = __stack_size;
+		. = __stack_size;
+		. = __stack_size;
+		. = __stack_size;
+		PROVIDE(metal_segment_stack_end = .);
+	} >ram AT>ram :ram
+
+
+	.heap :
+	{
+		PROVIDE( metal_segment_heap_target_start = . );
+		. = __heap_size;
+		PROVIDE( metal_segment_heap_target_end = . );
+		PROVIDE( _heap_end = . );
+	} >ram AT>ram :ram
+
+
+}
+
diff --git a/bsp/sifive-hifive-unleashed/metal.scratchpad.lds b/bsp/sifive-hifive-unleashed/metal.scratchpad.lds
new file mode 100644
index 0000000..f145bc7
--- /dev/null
+++ b/bsp/sifive-hifive-unleashed/metal.scratchpad.lds
@@ -0,0 +1,231 @@
+OUTPUT_ARCH("riscv")
+
+ENTRY(_enter)
+
+MEMORY
+{
+	ram (wxa!ri) : ORIGIN = 0x80000000, LENGTH = 0x80000000
+	itim (wx!rai) : ORIGIN = 0x1800000, LENGTH = 0x4000
+	flash (rxai!w) : ORIGIN = 0x20000000, LENGTH = 0x10000000
+}
+
+PHDRS
+{
+	flash PT_LOAD;
+	ram_init PT_LOAD;
+	itim_init PT_LOAD;
+	ram PT_LOAD;
+	itim PT_LOAD;
+}
+
+SECTIONS
+{
+	__stack_size = DEFINED(__stack_size) ? __stack_size : 0x400;
+	PROVIDE(__stack_size = __stack_size);
+	__heap_size = DEFINED(__heap_size) ? __heap_size : 0x400;
+
+
+	.init 		:
+	{
+		KEEP (*(.text.metal.init.enter))
+		KEEP (*(SORT_NONE(.init)))
+		KEEP (*(.text.libgloss.start))
+	} >ram AT>ram :ram
+
+
+	.text 		:
+	{
+		*(.text.unlikely .text.unlikely.*)
+		*(.text.startup .text.startup.*)
+		*(.text .text.*)
+		*(.gnu.linkonce.t.*)
+	} >ram AT>ram :ram
+
+
+	.fini 		:
+	{
+		KEEP (*(SORT_NONE(.fini)))
+	} >ram AT>ram :ram
+
+
+	PROVIDE (__etext = .);
+	PROVIDE (_etext = .);
+	PROVIDE (etext = .);
+
+
+	.rodata 		:
+	{
+		*(.rdata)
+		*(.rodata .rodata.*)
+		*(.gnu.linkonce.r.*)
+	} >ram AT>ram :ram
+
+
+	. = ALIGN(4);
+
+
+	.preinit_array 		:
+	{
+		PROVIDE_HIDDEN (__preinit_array_start = .);
+		KEEP (*(.preinit_array))
+		PROVIDE_HIDDEN (__preinit_array_end = .);
+	} >ram AT>ram :ram
+
+
+	.init_array 		:
+	{
+		PROVIDE_HIDDEN (__init_array_start = .);
+		KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
+		KEEP (*(.init_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .ctors))
+		PROVIDE_HIDDEN (__init_array_end = .);
+	} >ram AT>ram :ram
+
+
+	.finit_array 		:
+	{
+		PROVIDE_HIDDEN (__finit_array_start = .);
+		KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*) SORT_BY_INIT_PRIORITY(.dtors.*)))
+		KEEP (*(.fini_array EXCLUDE_FILE (*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o ) .dtors))
+		PROVIDE_HIDDEN (__finit_array_end = .);
+	} >ram AT>ram :ram
+
+
+	.ctors 		:
+	{
+		/* gcc uses crtbegin.o to find the start of
+		   the constructors, so we make sure it is
+		   first.  Because this is a wildcard, it
+		   doesn't matter if the user does not
+		   actually link against crtbegin.o; the
+		   linker won't look for a file to match a
+		   wildcard.  The wildcard also means that it
+		   doesn't matter which directory crtbegin.o
+		   is in.  */
+		KEEP (*crtbegin.o(.ctors))
+		KEEP (*crtbegin?.o(.ctors))
+		/* We don't want to include the .ctor section from
+		   the crtend.o file until after the sorted ctors.
+		   The .ctor section from the crtend file contains the
+		   end of ctors marker and it must be last */
+		KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
+		KEEP (*(SORT(.ctors.*)))
+		KEEP (*(.ctors))
+	} >ram AT>ram :ram
+
+
+	.dtors 		:
+	{
+		KEEP (*crtbegin.o(.dtors))
+		KEEP (*crtbegin?.o(.dtors))
+		KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
+		KEEP (*(SORT(.dtors.*)))
+		KEEP (*(.dtors))
+	} >ram AT>ram :ram
+
+
+	.litimalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( metal_segment_itim_source_start = . );
+	} >ram AT>ram :ram
+
+
+	.ditimalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( metal_segment_itim_target_start = . );
+	} >itim AT>ram :itim_init
+
+
+	.itim 		:
+	{
+		*(.itim .itim.*)
+	} >itim AT>ram :itim_init
+
+
+	. = ALIGN(8);
+	PROVIDE( metal_segment_itim_target_end = . );
+
+
+	.lalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( _data_lma = . );
+		PROVIDE( metal_segment_data_source_start = . );
+	} >ram AT>ram :ram
+
+
+	.dalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( metal_segment_data_target_start = . );
+	} >ram AT>ram :ram_init
+
+
+	.data 		:
+	{
+		*(.data .data.*)
+		*(.gnu.linkonce.d.*)
+		. = ALIGN(8);
+		PROVIDE( __global_pointer$ = . + 0x800 );
+		*(.sdata .sdata.* .sdata2.*)
+		*(.gnu.linkonce.s.*)
+		. = ALIGN(8);
+		*(.srodata.cst16)
+		*(.srodata.cst8)
+		*(.srodata.cst4)
+		*(.srodata.cst2)
+		*(.srodata .srodata.*)
+	} >ram AT>ram :ram_init
+
+
+	. = ALIGN(4);
+	PROVIDE( _edata = . );
+	PROVIDE( edata = . );
+	PROVIDE( metal_segment_data_target_end = . );
+	PROVIDE( _fbss = . );
+	PROVIDE( __bss_start = . );
+	PROVIDE( metal_segment_bss_target_start = . );
+
+
+	.bss 		:
+	{
+		*(.sbss*)
+		*(.gnu.linkonce.sb.*)
+		*(.bss .bss.*)
+		*(.gnu.linkonce.b.*)
+		*(COMMON)
+		. = ALIGN(4);
+	} >ram AT>ram :ram
+
+
+	. = ALIGN(8);
+	PROVIDE( _end = . );
+	PROVIDE( end = . );
+	PROVIDE( metal_segment_bss_target_end = . );
+
+
+	.stack :
+	{
+		PROVIDE(metal_segment_stack_begin = .);
+		. = __stack_size;
+		PROVIDE( _sp = . );
+		. = __stack_size;
+		. = __stack_size;
+		. = __stack_size;
+		. = __stack_size;
+		PROVIDE(metal_segment_stack_end = .);
+	} >ram AT>ram :ram
+
+
+	.heap :
+	{
+		PROVIDE( metal_segment_heap_target_start = . );
+		. = __heap_size;
+		PROVIDE( metal_segment_heap_target_end = . );
+		PROVIDE( _heap_end = . );
+	} >ram AT>ram :ram
+
+
+}
+
diff --git a/bsp/sifive-hifive-unleashed/openocd.cfg b/bsp/sifive-hifive-unleashed/openocd.cfg
new file mode 100644
index 0000000..7589897
--- /dev/null
+++ b/bsp/sifive-hifive-unleashed/openocd.cfg
@@ -0,0 +1,24 @@
+adapter_khz     10000
+
+interface ftdi
+ftdi_device_desc "Dual RS232-HS"
+ftdi_vid_pid 0x0403 0x6010
+
+ftdi_layout_init 0x0008 0x001b
+ftdi_layout_signal nSRST -oe 0x0020 -data 0x0020
+
+set _CHIPNAME riscv
+jtag newtap $_CHIPNAME cpu -irlen 5
+
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME riscv -chain-position $_TARGETNAME -rtos riscv
+$_TARGETNAME configure -work-area-phys 0x80000000 -work-area-size 10000 -work-area-backup 1
+
+flash bank onboard_spi_flash fespi 0x20000000 0 0 0 $_TARGETNAME 0x10040000
+init 
+halt
+
+# Uncomment this if you want to be able to clobber your SPI Flash, which
+# probably you don't since you can do it through Linux
+  
+# flash protect 0 0 last off
diff --git a/bsp/sifive-hifive-unleashed/settings.mk b/bsp/sifive-hifive-unleashed/settings.mk
new file mode 100644
index 0000000..38a72d6
--- /dev/null
+++ b/bsp/sifive-hifive-unleashed/settings.mk
@@ -0,0 +1,5 @@
+RISCV_ARCH=rv64imac
+RISCV_ABI=lp64
+RISCV_CMODEL=medany
+
+TARGET_TAGS=board openocd