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
|
# -*- make -*-
CC = gcc
AS86 = as86
LOADADDRESS=0x98000
CFLAGS = -O2 -fstrength-reduce -fomit-frame-pointer -m386 -Wall
CPPFLAGS = -DRELOC=$(LOADADDRESS) -DMOVEROM -DSTACKADDR=0xA0000-0x98000 -I ../fs/ffs2
# Enable this if your flash window is 4k
# CPPFLAGS += -DSMALLER
all: flashloader.rom sbc_gxx.rom
# To create the loader we first
flashloader.rom: makerom rloader.bin start32.o components.a
$(LD) -N -Ttext $(LOADADDRESS) -e _start -nostdlib -o $@.t start32.o components.a
objcopy -O binary -R .note -R .comment $@.t $@.bin
@-rm $@.t
cat rloader.bin $@.bin > $@
./makerom -i'Flash Loader Rom' $@
# We create a library to help the linker
components.a: misc.o main.o io.o
@-rm $@ > /dev/null 2>&1
$(AR) cq $@ $(filter %.o,$^)
sbc_gxx.rom: makerom rloader.bin start32.o sbc_gxx.a
$(LD) -N -Ttext $(LOADADDRESS) -e _start -nostdlib -o $@.t start32.o \
sbc_gxx.a
objcopy -O binary -R .note -R .comment $@.t $@.bin
@-rm $@.t
cat rloader.bin $@.bin > $@
./makerom -i'Flash Loader Rom' $@
# We create a library to help the linker
sbc_gxx.a: misc.o sbc_gxx_boot.o
@-rm $@ > /dev/null 2>&1
$(AR) cq $@ $(filter %.o,$^)
# The 16 bit boot code is written using the as86 assembler which is not syntax
# compatible with the AT&T like 'as' assembler. Throwback from when gnu as
# could not output 16 bit code at all.
rloader.bin: loader.asm loader.inc
$(CC) $(CFLAGS) $(CPPFLAGS) -x assembler-with-cpp -E $< | $(AS86) -0 -b rloader.bin.t -
mv -f rloader.bin.t rloader.bin
io.o: ../fs/ffs2/io.c
ln -sf ../fs/ffs2/io.c .
$(CC) $(CFLAGS) $(CPPFLAGS) -c io.c -o $@
clean:
-rm -f *.a *.o *.bin *.rom makerom
%.o: %.c
$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
%.o: %.S
$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@
|
