MIPS: Refactor arch/mips/boot/compressed/Makefile
[sfrench/cifs-2.6.git] / arch / mips / boot / compressed / Makefile
1 #
2 # This file is subject to the terms and conditions of the GNU General Public
3 # License.
4 #
5 # Adapted for MIPS Pete Popov, Dan Malek
6 #
7 # Copyright (C) 1994 by Linus Torvalds
8 # Adapted for PowerPC by Gary Thomas
9 # modified by Cort (cort@cs.nmt.edu)
10 #
11 # Copyright (C) 2009 Lemote Inc. & DSLab, Lanzhou University
12 # Author: Wu Zhangjin <wuzhangjin@gmail.com>
13 #
14
15 # compressed kernel load addr: VMLINUZ_LOAD_ADDRESS > VMLINUX_LOAD_ADDRESS + VMLINUX_SIZE
16 VMLINUX_SIZE := $(shell wc -c $(objtree)/$(KBUILD_IMAGE) 2>/dev/null | cut -d' ' -f1)
17 VMLINUX_SIZE := $(shell [ -n "$(VMLINUX_SIZE)" ] && echo -n $$(($(VMLINUX_SIZE) + (65536 - $(VMLINUX_SIZE) % 65536))))
18 # VMLINUZ_LOAD_ADDRESS = concat "high32 of VMLINUX_LOAD_ADDRESS" and "(low32 of VMLINUX_LOAD_ADDRESS) + VMLINUX_SIZE"
19 HIGH32 := $(shell A=$(VMLINUX_LOAD_ADDRESS); [ $${\#A} -gt 10 ] && expr substr "$(VMLINUX_LOAD_ADDRESS)" 3 $$(($${\#A} - 10)))
20 LOW32 := $(shell [ -n "$(HIGH32)" ] && A=11 || A=3; expr substr "$(VMLINUX_LOAD_ADDRESS)" $${A} 8)
21 VMLINUZ_LOAD_ADDRESS := 0x$(shell [ -n "$(VMLINUX_SIZE)" -a -n "$(LOW32)" ] && printf "$(HIGH32)%08x" $$(($(VMLINUX_SIZE) + 0x$(LOW32))))
22
23 # set the default size of the mallocing area for decompressing
24 BOOT_HEAP_SIZE := 0x400000
25
26 # Disable Function Tracer
27 KBUILD_CFLAGS := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//")
28
29 KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \
30         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
31
32 KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
33         -DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
34         -DKERNEL_ENTRY=0x$(shell $(NM) $(objtree)/$(KBUILD_IMAGE) 2>/dev/null | grep " kernel_entry" | cut -f1 -d \ )
35
36 targets := head.o decompress.o dbg.o uart-16550.o uart-alchemy.o
37
38 # decompressor objects (linked with vmlinuz)
39 vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/dbg.o
40
41 ifdef CONFIG_DEBUG_ZBOOT
42 vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
43 vmlinuzobjs-$(CONFIG_MACH_ALCHEMY)                 += $(obj)/uart-alchemy.o
44 endif
45
46 targets += vmlinux.bin
47 OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
48 $(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
49         $(call if_changed,objcopy)
50
51 suffix_$(CONFIG_KERNEL_GZIP)  = gz
52 suffix_$(CONFIG_KERNEL_BZIP2) = bz2
53 suffix_$(CONFIG_KERNEL_LZMA)  = lzma
54 suffix_$(CONFIG_KERNEL_LZO)   = lzo
55 tool_$(CONFIG_KERNEL_GZIP)    = gzip
56 tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
57 tool_$(CONFIG_KERNEL_LZMA)    = lzma
58 tool_$(CONFIG_KERNEL_LZO)     = lzo
59
60 targets += vmlinux.gz vmlinux.bz2 vmlinux.lzma vmlinux.lzo
61 $(obj)/vmlinux.$(suffix_y): $(obj)/vmlinux.bin FORCE
62         $(call if_changed,$(tool_y))
63
64 targets += piggy.o
65 OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.$(suffix_y) \
66                         --set-section-flags=.image=contents,alloc,load,readonly,data
67 $(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.$(suffix_y) FORCE
68         $(call if_changed,objcopy)
69
70 LDFLAGS_vmlinuz := $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T
71 vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/piggy.o
72         $(call cmd,ld)
73         $(Q)$(OBJCOPY) $(OBJCOPYFLAGS) $@
74
75 #
76 # Some DECstations need all possible sections of an ECOFF executable
77 #
78 ifdef CONFIG_MACH_DECSTATION
79   e2eflag := -a
80 endif
81
82 # elf2ecoff can only handle 32bit image
83 hostprogs-y := ../elf2ecoff
84
85 ifdef CONFIG_32BIT
86         VMLINUZ = vmlinuz
87 else
88         VMLINUZ = vmlinuz.32
89 endif
90
91 quiet_cmd_32 = OBJCOPY $@
92       cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
93 vmlinuz.32: vmlinuz
94         $(call cmd,32)
95
96 quiet_cmd_ecoff = ECOFF   $@
97       cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
98 vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
99         $(call cmd,ecoff)
100
101 OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
102 vmlinuz.bin: vmlinuz
103         $(call cmd,objcopy)
104
105 OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
106 vmlinuz.srec: vmlinuz
107         $(call cmd,objcopy)
108
109 clean-files := $(objtree)/vmlinuz.*