Add initial installer code

installer/Makefile

@@ -0,0 +1,33 @@
+INSTALLER_ADDRESS=0x1016
+
+CC = sdcc
+CC_FLAGS = -mmcs51
+ASM = sdas8051
+AFLAGS= -plosgff
+
+SRCS = installer.c
+OBJS = ${SRCS:.c=.rel}
+
+all: updatebuilder rtlinstall.bin
+
+updatebuilder: updatebuilder.c
+	gcc $^ -o $@
+
+%.rel: %.c
+	$(CC) $(CC_FLAGS) -–code-loc 0x1000 -c $<
+
+%.rel: %.asm
+	${ASM} ${AFLAGS} $^
+
+%.rel: %.c
+	$(CC) $(CC_FLAGS) -c $<
+
+rtlinstall.ihx:  crtstart.rel $(OBJS) 
+	$(CC) $(CC_FLAGS) -Wl-bHOME=${INSTALLER_ADDRESS} -Wl-r -o $@ $^
+
+%.bin: %.ihx
+	objcopy --input-target=ihex -O binary $< $@
+
+clean:
+	rm *.lst *.rel *.rst *.sym *.lst *.map *.mem *.lk $(OBJS)
+