Add MEE BSP for S51 CoreIP

Signed-off-by: Nathaniel Graff <nathaniel.graff@sifive.com>

4 files changed, 315 insertions, 0 deletions

diff --git a/bsp/coreip-s51/design.dts b/bsp/coreip-s51/design.dts
new file mode 100644
index 0000000..ebfd42a
--- /dev/null
+++ b/bsp/coreip-s51/design.dts
@@ -0,0 +1,105 @@
+/dts-v1/;
+
+/ {
+	#address-cells = <2>;
+	#size-cells = <2>;
+	compatible = "SiFive,FE510G-dev", "fe510-dev", "sifive-dev";
+	model = "SiFive,FE510G";
+	L15: cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		L6: 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>;
+			reg = <0>;
+			riscv,isa = "rv64imac";
+			sifive,dtim = <&L5>;
+			sifive,itim = <&L4>;
+			status = "okay";
+			timebase-frequency = <1000000>;
+			L3: interrupt-controller {
+				#interrupt-cells = <1>;
+				compatible = "riscv,cpu-intc";
+				interrupt-controller;
+			};
+		};
+	};
+	L14: soc {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		compatible = "SiFive,FE510G-soc", "fe510-soc", "sifive-soc", "simple-bus";
+		ranges;
+		L12: axi4-periph-port@20000000 {
+			#address-cells = <2>;
+			#size-cells = <2>;
+			compatible = "simple-bus";
+			ranges = <0x0 0x20000000 0x0 0x20000000 0x0 0x20000000 0x1 0x0 0x1 0x0 0xf 0x0>;
+		};
+		L11: axi4-sys-port@40000000 {
+			#address-cells = <2>;
+			#size-cells = <2>;
+			compatible = "simple-bus";
+			ranges = <0x0 0x40000000 0x0 0x40000000 0x0 0x20000000 0x10 0x0 0x10 0x0 0xf0 0x0>;
+		};
+		L1: clint@2000000 {
+			compatible = "riscv,clint0";
+			interrupts-extended = <&L3 3 &L3 7>;
+			reg = <0x0 0x2000000 0x0 0x10000>;
+			reg-names = "control";
+		};
+		L2: debug-controller@0 {
+			compatible = "sifive,debug-013", "riscv,debug-013";
+			interrupts-extended = <&L3 65535>;
+			reg = <0x0 0x0 0x0 0x1000>;
+			reg-names = "control";
+		};
+		L5: dtim@80000000 {
+			compatible = "sifive,dtim0";
+			reg = <0x0 0x80000000 0x0 0x10000>;
+			reg-names = "mem";
+		};
+		L8: error-device@3000 {
+			compatible = "sifive,error0";
+			reg = <0x0 0x3000 0x0 0x1000>;
+			reg-names = "mem";
+		};
+		L9: global-external-interrupts {
+			interrupt-parent = <&L0>;
+			interrupts = <1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255>;
+		};
+		L0: interrupt-controller@c000000 {
+			#interrupt-cells = <1>;
+			compatible = "riscv,plic0";
+			interrupt-controller;
+			interrupts-extended = <&L3 11>;
+			reg = <0x0 0xc000000 0x0 0x4000000>;
+			reg-names = "control";
+			riscv,max-priority = <7>;
+			riscv,ndev = <255>;
+		};
+		L4: itim@8000000 {
+			compatible = "sifive,itim0";
+			reg = <0x0 0x8000000 0x0 0x4000>;
+			reg-names = "mem";
+		};
+		L10: local-external-interrupts-0 {
+			interrupt-parent = <&L3>;
+			interrupts = <16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31>;
+		};
+		L7: teststatus@4000 {
+			compatible = "sifive,test0";
+			reg = <0x0 0x4000 0x0 0x1000>;
+			reg-names = "control";
+		};
+		test_memory: testram@20000000 {
+			compatible = "sifive,testram0";
+			reg = <0x0 0x20000000 0x0 0x4000000>;
+			reg-names = "mem";
+			word-size-bytes = <8>;
+		};
+	};
+};
diff --git a/bsp/coreip-s51/mee.h b/bsp/coreip-s51/mee.h
new file mode 100644
index 0000000..39520a3
--- /dev/null
+++ b/bsp/coreip-s51/mee.h
@@ -0,0 +1,17 @@
+#ifndef ASSEMBLY
+#include <mee/drivers/sifive,test0.h>
+/* From teststatus@4000 */
+asm (".weak __mee_dt_teststatus_4000");
+struct __mee_driver_sifive_test0 __mee_dt_teststatus_4000;
+
+/* From teststatus@4000 */
+struct __mee_driver_sifive_test0 __mee_dt_teststatus_4000 = {
+    .vtable = &__mee_driver_vtable_sifive_test0,
+    .shutdown.vtable = &__mee_driver_vtable_sifive_test0.shutdown,
+    .base = 16384UL,
+    .size = 4096UL,
+};
+
+/* From teststatus@4000 */
+#define __MEE_DT_SHUTDOWN_HANDLE (&__mee_dt_teststatus_4000.shutdown)
+#endif/*ASSEMBLY*/
diff --git a/bsp/coreip-s51/mee.lds b/bsp/coreip-s51/mee.lds
new file mode 100644
index 0000000..9f73234
--- /dev/null
+++ b/bsp/coreip-s51/mee.lds
@@ -0,0 +1,189 @@
+OUTPUT_ARCH("riscv")
+
+ENTRY(_enter)
+
+MEMORY
+{
+	ram (wxa!ri) : ORIGIN = 0x20000000, LENGTH = 0x4000000
+}
+
+PHDRS
+{
+	flash PT_LOAD;
+	ram_init PT_LOAD;
+	ram PT_LOAD;
+}
+
+SECTIONS
+{
+	__stack_size = DEFINED(__stack_size) ? __stack_size : 0x400;
+
+
+	.init 		:
+	{
+		KEEP (*(.text.mee.init.enter))
+		KEEP (*(SORT_NONE(.init)))
+	} >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
+
+
+	.lalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( _data_lma = . );
+		PROVIDE( mee_segment_data_source_start = . );
+	} >ram AT>ram :ram
+
+
+	.dalign 		:
+	{
+		. = ALIGN(4);
+		PROVIDE( mee_segment_data_target_start = . );
+	} >ram AT>ram :ram_init
+
+
+	.data 		:
+	{
+		*(.data .data.*)
+		*(.gnu.linkonce.d.*)
+		. = ALIGN(8);
+		PROVIDE( __global_pointer$ = . + 0x800 );
+		*(.sdata .sdata.*)
+		*(.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( mee_segment_data_target_end = . );
+	PROVIDE( _fbss = . );
+	PROVIDE( __bss_start = . );
+	PROVIDE( mee_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( mee_segment_bss_target_end = . );
+	PROVIDE( mee_segment_heap_target_start = . );
+
+
+	.stack :
+	{
+		. = ALIGN(8);
+		. += __stack_size;
+		PROVIDE( _sp = . );
+		PROVIDE( _heap_end = . );
+		PROVIDE(mee_segment_stack_end = .);
+	} >ram AT>ram :ram
+
+
+}
+
diff --git a/bsp/coreip-s51/settings.mk b/bsp/coreip-s51/settings.mk
new file mode 100644
index 0000000..31aca11
--- /dev/null
+++ b/bsp/coreip-s51/settings.mk
@@ -0,0 +1,4 @@
+#write_config_file
+
+RISCV_ARCH=rv64imac
+RISCV_ABI=lp64