OpenWrt – Blame information for rev 4

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4 office 1 #
2 # Makefile for the LZMA compressed kernel loader for
3 # Atheros AR7XXX/AR9XXX based boards
4 #
5 # Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
6 #
7 # Some parts of this file was based on the OpenWrt specific lzma-loader
8 # for the BCM47xx and ADM5120 based boards:
9 # Copyright (C) 2004 Manuel Novoa III (mjn3@codepoet.org)
10 # Copyright (C) 2005 Mineharu Takahara <mtakahar@yahoo.com>
11 # Copyright (C) 2005 by Oleg I. Vdovikin <oleg@cs.msu.su>
12 #
13 # This program is free software; you can redistribute it and/or modify it
14 # under the terms of the GNU General Public License version 2 as published
15 # by the Free Software Foundation.
16 #
17  
18 LOADADDR :=
19 LZMA_TEXT_START := 0x80a00000
20 LOADER_DATA :=
21  
22 CC := $(CROSS_COMPILE)gcc
23 LD := $(CROSS_COMPILE)ld
24 OBJCOPY := $(CROSS_COMPILE)objcopy
25 OBJDUMP := $(CROSS_COMPILE)objdump
26  
27 BIN_FLAGS := -O binary -R .reginfo -R .note -R .comment -R .mdebug \
28 -R .MIPS.abiflags -S
29  
30 CFLAGS = -D__KERNEL__ -Wall -Wstrict-prototypes -Wno-trigraphs -Os \
31 -fno-strict-aliasing -fno-common -fomit-frame-pointer -G 0 \
32 -mno-abicalls -fno-pic -ffunction-sections -pipe \
33 -ffreestanding -fhonour-copts \
34 -mabi=32 -march=mips32 \
35 -Wa,-32 -Wa,-march=mips32 -Wa,-mips32 -Wa,--trap
36 CFLAGS += -D_LZMA_PROB32
37  
38 ASFLAGS = $(CFLAGS) -D__ASSEMBLY__
39  
40 LDFLAGS = -static --gc-sections -no-warn-mismatch
41 LDFLAGS += -e startup -T loader.lds -Ttext $(LZMA_TEXT_START)
42  
43 O_FORMAT = $(shell $(OBJDUMP) -i | head -2 | grep elf32)
44  
45 OBJECTS := head.o loader.o cache.o board.o printf.o LzmaDecode.o
46  
47 ifneq ($(strip $(LOADER_DATA)),)
48 OBJECTS += data.o
49 CFLAGS += -DLZMA_WRAPPER=1 -DLOADADDR=$(LOADADDR)
50 endif
51  
52  
53 all: loader.elf
54  
55 # Don't build dependencies, this may die if $(CC) isn't gcc
56 dep:
57  
58 install:
59  
60 %.o : %.c
61 $(CC) $(CFLAGS) -c -o $@ $<
62  
63 %.o : %.S
64 $(CC) $(ASFLAGS) -c -o $@ $<
65  
66 data.o: $(LOADER_DATA)
67 $(LD) -r -b binary --oformat $(O_FORMAT) -T lzma-data.lds -o $@ $<
68  
69 loader: $(OBJECTS)
70 $(LD) $(LDFLAGS) -o $@ $(OBJECTS)
71  
72 loader.bin: loader
73 $(OBJCOPY) $(BIN_FLAGS) $< $@
74  
75 loader2.o: loader.bin
76 $(LD) -r -b binary --oformat $(O_FORMAT) -o $@ $<
77  
78 loader.elf: loader2.o
79 $(LD) -e startup -T loader2.lds -Ttext $(LOADADDR) -o $@ $<
80  
81 mrproper: clean
82  
83 clean:
84 rm -f loader *.elf *.bin *.o
85  
86  
87