save riscv bits

chips/fe310/snek-fe310.defs

@@ -13,6 +13,7 @@
 #
 
 FREEDOM_METAL = /home/keithp/misc/sifive/src/freedom-e-sdk/freedom-metal/
+BSP = /home/keithp/misc/sifive/src/freedom-e-sdk/bsp/qemu-sifive-e31
 FM_SRC = $(FREEDOM_METAL)/src
 FM_DRIVERS = $(FM_SRC)/drivers
 FM_INC = $(FREEDOM_METAL)
@@ -69,13 +70,17 @@ WARN_FLAGS=-Wall -Wextra -Wcast-align \
 	-Wmissing-declarations \
 	-Wnested-externs \
 	-Wshadow \
-	-Warray-bounds=2
+	-Warray-bounds=2\
+	-Wno-missing-prototypes\
+	-Wno-unused-parameter\
+	-Wno-strict-prototypes\
+	-Wno-missing-declarations
 
 AO_CFLAGS=\
 	-std=gnu99 $(WARN_FLAGS) $(OPT) -g
 
 FE310_CFLAGS=-march=rv32imac -mabi=ilp32 \
-	-I. -I$(SNEK_FE310) -I$(SNEK_ROOT) -I$(FREEDOM_METAL) $(PICOLIBC_CFLAGS)
+	-I. -I$(SNEK_FE310) -I$(SNEK_ROOT) -I$(BSP)/install/include -I$(BSP) -I$(FREEDOM_METAL) $(PICOLIBC_CFLAGS)
 
 CFLAGS = $(FE310_CFLAGS) $(SNEK_CFLAGS) $(AO_CFLAGS)
 

chips/fe310/snek-metal.c

@@ -24,14 +24,12 @@
 static int
 snek_metal_putc(char c, FILE *f)
 {
-	(void) f;
 	return metal_tty_putc(c);
 }
 
 int
 snek_metal_getc(FILE *f)
 {
-	(void) f;
 	int c;
 	for (;;) {
 		if (metal_tty_getc(&c) != 0)

ports/qemu-sifive-e31/Makefile

@@ -24,11 +24,11 @@ include $(SNEK_FE310)/snek-fe310.defs
 SNEK_EXTRA_SRC = \
 
 SNEK_LOCAL_SRC = \
-	inline.c \
 	fixed-clock.c \
 	riscv_plic0.c \
 	riscv_clint0.c \
 	riscv_cpu.c \
+	riscv_htif0.c \
 	sifive_fe310-g000_prci.c \
 	sifive_fe310-g000_hfrosc.c \
 	sifive_fe310-g000_hfxosc.c \
@@ -41,6 +41,8 @@ SNEK_LOCAL_SRC = \
 	sifive_rtc0.c \
 	sifive_gpio0.c \
 	sifive_local-external-interrupts0.c \
+	snek-e31.c \
+	snek-metal.c \
 	$(SNEK_FE310_SRC)
 
 SNEK_LOCAL_INC = \