OpenWrt – Blame information for rev 4

Subversion Repositories:
Rev:
Rev Author Line No. Line
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 BOARD :=
22 FLASH_OFFS :=
23 FLASH_MAX :=
24  
25 CC := $(CROSS_COMPILE)gcc
26 LD := $(CROSS_COMPILE)ld
27 OBJCOPY := $(CROSS_COMPILE)objcopy
28 OBJDUMP := $(CROSS_COMPILE)objdump
29  
30 BIN_FLAGS := -O binary -R .reginfo -R .note -R .comment -R .mdebug \
31 -R .MIPS.abiflags -S
32  
33 CFLAGS = -D__KERNEL__ -Wall -Wstrict-prototypes -Wno-trigraphs -Os \
34 -fno-strict-aliasing -fno-common -fomit-frame-pointer -G 0 \
35 -mno-abicalls -fno-pic -ffunction-sections -pipe -mlong-calls \
36 -fno-common -ffreestanding -fhonour-copts -nostartfiles \
37 -mabi=32 -march=mips32r2 \
38 -Wa,-32 -Wa,-march=mips32r2 -Wa,-mips32r2 -Wa,--trap
39 CFLAGS += -D_LZMA_PROB32
40 CFLAGS += -flto
41  
42 ASFLAGS = $(CFLAGS) -D__ASSEMBLY__
43  
44 LDFLAGS = -static -Wl,--gc-sections -Wl,-no-warn-mismatch
45 LDFLAGS += -Wl,-e,startup -T loader.lds -Wl,-Ttext,$(LZMA_TEXT_START)
46 LDFLAGS += -flto -fwhole-program
47  
48 O_FORMAT = $(shell $(OBJDUMP) -i | head -2 | grep elf32)
49  
50 OBJECTS := head.o loader.o cache.o board.o printf.o LzmaDecode.o
51  
52 ifneq ($(strip $(LOADER_DATA)),)
53 OBJECTS += data.o
54 CFLAGS += -DLZMA_WRAPPER=1 -DLOADADDR=$(LOADADDR)
55 endif
56  
57 ifneq ($(strip $(KERNEL_CMDLINE)),)
58 CFLAGS += -DCONFIG_KERNEL_CMDLINE='"$(KERNEL_CMDLINE)"'
59 endif
60  
61 ifneq ($(strip $(FLASH_OFFS)),)
62 CFLAGS += -DCONFIG_FLASH_OFFS=$(FLASH_OFFS)
63 endif
64  
65 ifneq ($(strip $(FLASH_MAX)),)
66 CFLAGS += -DCONFIG_FLASH_MAX=$(FLASH_MAX)
67 endif
68  
69 BOARD_DEF := $(shell echo $(strip $(BOARD)) | tr a-z A-Z | tr - _)
70 ifneq ($(BOARD_DEF),)
71 CFLAGS += -DCONFIG_BOARD_$(BOARD_DEF)
72 endif
73  
74 all: loader.elf
75  
76 # Don't build dependencies, this may die if $(CC) isn't gcc
77 dep:
78  
79 install:
80  
81 %.o : %.c
82 $(CC) $(CFLAGS) -c -o $@ $<
83  
84 %.o : %.S
85 $(CC) $(ASFLAGS) -c -o $@ $<
86  
87 data.o: $(LOADER_DATA)
88 $(LD) -r -b binary --oformat $(O_FORMAT) -T lzma-data.lds -o $@ $<
89  
90 loader: $(OBJECTS)
91 $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJECTS)
92  
93 loader.bin: loader
94 $(OBJCOPY) $(BIN_FLAGS) $< $@
95  
96 loader2.o: loader.bin
97 $(LD) -r -b binary --oformat $(O_FORMAT) -o $@ $<
98  
99 loader.elf: loader2.o
100 $(LD) -z max-page-size=0x1000 -e startup -T loader2.lds -Ttext $(LOADADDR) -o $@ $<
101  
102 mrproper: clean
103  
104 clean:
105 rm -f loader *.elf *.bin *.o
106  
107  
108