2 # Makefile for the LZMA compressed kernel loader for
3 # Atheros AR7XXX/AR9XXX based boards
5 # Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
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>
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.
19 LZMA_TEXT_START
:= 0x80a00000
26 CC
:= $(CROSS_COMPILE
)gcc
27 LD
:= $(CROSS_COMPILE
)ld
28 OBJCOPY
:= $(CROSS_COMPILE
)objcopy
29 OBJDUMP
:= $(CROSS_COMPILE
)objdump
31 BIN_FLAGS
:= -O binary
-R .reginfo
-R .note
-R .comment
-R .mdebug
-R .MIPS.abiflags
-S
33 CFLAGS
= -D__KERNEL__
-Wall
-Wstrict-prototypes
-Wno-trigraphs
-Os \
34 -fno-strict-aliasing
-fno-common
-fomit-frame-pointer
-G
0 \
35 -mno-abicalls
-fno-pic
-ffunction-sections
-pipe
-mlong-calls \
36 -fno-common
-ffreestanding
-fhonour-copts \
37 -mabi
=32 -march
=mips32r2 \
38 -Wa
,-32 -Wa
,-march
=mips32r2
-Wa
,-mips32r2
-Wa
,--trap
39 CFLAGS
+= -D_LZMA_PROB32
-DARCH
=$(PLATFORM
)
41 ASFLAGS
= $(CFLAGS
) -D__ASSEMBLY__
43 LDFLAGS
= -static
--gc-sections
-no-warn-mismatch
44 LDFLAGS
+= -e startup
-T loader.lds
-Ttext
$(LZMA_TEXT_START
)
46 O_FORMAT
= $(shell $(OBJDUMP
) -i | head
-2 | grep elf32
)
48 OBJECTS
:= head.o loader.o cache.o board-
$(PLATFORM
).o printf.o LzmaDecode.o
50 include $(PLATFORM
).mk
51 CFLAGS
+=$(CACHE_FLAGS
)
52 ASFLAGS
+=$(CACHE_FLAGS
)
54 ifneq ($(strip $(LOADER_DATA
)),)
56 CFLAGS
+= -DLZMA_WRAPPER
=1 -DLOADADDR
=$(LOADADDR
)
59 ifneq ($(strip $(KERNEL_CMDLINE
)),)
60 CFLAGS
+= -DCONFIG_KERNEL_CMDLINE
='"$(KERNEL_CMDLINE)"'
63 ifneq ($(strip $(FLASH_OFFS
)),)
64 CFLAGS
+= -DCONFIG_FLASH_OFFS
=$(FLASH_OFFS
)
67 ifneq ($(strip $(FLASH_MAX
)),)
68 CFLAGS
+= -DCONFIG_FLASH_MAX
=$(FLASH_MAX
)
71 BOARD_DEF
:= $(shell echo
$(strip $(BOARD
)) | tr a-z A-Z | tr
- _
)
73 CFLAGS
+= -DCONFIG_BOARD_
$(BOARD_DEF
)
78 # Don't build dependencies, this may die if $(CC) isn't gcc
84 $(CC
) $(CFLAGS
) -c
-o
$@
$<
87 $(CC
) $(ASFLAGS
) -c
-o
$@
$<
89 data.o
: $(LOADER_DATA
)
90 $(LD
) -r
-b binary
--oformat
$(O_FORMAT
) -T lzma-data.lds
-o
$@
$<
93 $(LD
) $(LDFLAGS
) -o
$@
$(OBJECTS
)
96 $(OBJCOPY
) $(BIN_FLAGS
) $< $@
99 $(LD
) -r
-b binary
--oformat
$(O_FORMAT
) -o
$@
$<
101 loader.elf
: loader2.o
102 $(LD
) -e startup
-T loader2.lds
-Ttext
$(LOADADDR
) -o
$@
$<
107 rm -f loader
*.elf
*.bin
*.o