From f3885c4b23b0e13d7fe9ef4674a07e746acca320 Mon Sep 17 00:00:00 2001
From: Bobby Bingham <koorogi@koorogi.info>
Date: Sun, 19 Jul 2015 17:17:06 -0500
Subject: build bootloaders from code

This adds the infrastructure for building from source the bootloaders which
will go into the application initial program, in the boot sector.  As a
simple test case, it includes a simple bootloader which merely jumpts to
the code address specified in the AIP, with the stack address specified
there.
---
 Makefile | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index af28deb..de590e8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,10 @@
 CFLAGS  = -Os -pipe -std=c99 -D_POSIX_C_SOURCE=200809L
 LDFLAGS =
 
+BOOTSRCS = $(sort $(wildcard boot/*.c))
+BOOTELFS = $(patsubst %.c,%.elf,$(BOOTSRCS))
+BOOTBINS = $(patsubst boot/%.c,share/%.boot,$(BOOTSRCS))
+
 SRCS = $(sort $(wildcard src/*.c))
 DATA = $(sort $(wildcard src/*.bin))
 OBJS = $(SRCS:.c=.o) $(DATA:.bin=.o)
@@ -8,17 +12,22 @@ BINS = bin/satmkboot
 
 .PHONY: all clean
 
-all: $(BINS)
+all: $(BINS) $(BOOTBINS)
 
 clean:
-	rm -f $(BINS)
-	rm -f $(OBJS)
+	rm -f $(BINS) $(OBJS) $(BOOTBINS) $(BOOTELFS)
 
 bin/satmkboot:         \
 	src/satmkboot.o    \
 	src/securitycode.o \
 	src/symbols.o
 
+share/%.boot: boot/%.elf
+	saturn-objcopy -O binary $< $@
+
+%.elf: %.c boot/ldscript
+	saturn-gcc -nostdlib -T boot/ldscript $(CFLAGS) $< -o $@
+
 %.c: %.bin
 	tools/bin2c $< > $@
 
-- 
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