software: put network code in a library

software/bios/Makefile

@@ -1,7 +1,7 @@
 M2DIR=../..
 include $(M2DIR)/software/common.mak
 
-OBJECTS=crt0.o isr.o sdram.o main.o microudp.o tftp.o boot-helper.o boot.o dataflow.o
+OBJECTS=crt0.o isr.o sdram.o main.o boot-helper.o boot.o dataflow.o
 
 all: bios.bin
 
@@ -19,9 +19,10 @@ bios-rescue.elf: linker-rescue.ld $(OBJECTS) libs
 
 %.elf:
 	$(LD) $(LDFLAGS) -T $< -N -o $@ $(OBJECTS) \
+		-L$(M2DIR)/software/libnet \
 		-L$(M2DIR)/software/libbase \
 		-L$(M2DIR)/software/libcompiler-rt \
-		-lbase -lcompiler-rt
+		-lnet -lbase -lcompiler-rt
 	chmod -x $@
 
 main.o: main.c
@@ -36,6 +37,7 @@ main.o: main.c
 libs:
 	make -C $(M2DIR)/software/libcompiler-rt
 	make -C $(M2DIR)/software/libbase
+	make -C $(M2DIR)/software/libnet
 
 flash: bios.bin
 	m1nor bios.bin

software/bios/boot.c

@@ -11,8 +11,8 @@
 
 #include <hw/mem.h>
 
-#include "microudp.h"
-#include "tftp.h"
+#include <net/microudp.h>
+#include <net/tftp.h>
 #include "boot.h"
 
 extern int rescue;

software/bios/main.c

@@ -11,11 +11,11 @@
 #include <timer.h>
 
 #include <hw/mem.h>
+#include <net/microudp.h>
 
 #include "sdram.h"
 #include "dataflow.h"
 #include "boot.h"
-#include "microudp.h"
 
 enum {
 	CSR_IE = 1, CSR_IM, CSR_IP, CSR_ICC, CSR_DCC, CSR_CC, CSR_CFG, CSR_EBA,

software/libnet/Makefile

@@ -0,0 +1,24 @@
+M2DIR=../..
+include $(M2DIR)/software/common.mak
+
+OBJECTS=microudp.o tftp.o
+
+all: libnet.a
+
+# pull in dependency info for *existing* .o files
+-include $(OBJECTS:.o=.d)
+
+libnet.a: $(OBJECTS)
+	$(AR) clr libnet.a $(OBJECTS)
+	$(RANLIB) libnet.a
+
+%.o: %.c
+	$(compile-dep)
+
+%.o: %.S
+	$(assemble)
+
+.PHONY: clean
+
+clean:
+	rm -f $(OBJECTS) $(OBJECTS:.o=.ts) $(OBJECTS:.o=.d) libnet.a .*~ *~

software/libnet/microudp.c

@@ -6,7 +6,7 @@
 #include <hw/flags.h>
 #include <hw/mem.h>
 
-#include "microudp.h"
+#include <net/microudp.h>
 
 #define ETHERTYPE_ARP 0x0806
 #define ETHERTYPE_IP  0x0800

software/libnet/tftp.c

@@ -1,8 +1,8 @@
 #include <stdint.h>
 #include <string.h>
 
-#include "microudp.h"
-#include "tftp.h"
+#include <net/microudp.h>
+#include <net/tftp.h>
 
 #define PORT_OUT	69
 #define PORT_IN		7642