xref: /openbmc/linux/arch/mips/boot/compressed/Makefile (revision 93f5715e)
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
15include $(srctree)/arch/mips/Kbuild.platforms
16
17# set the default size of the mallocing area for decompressing
18BOOT_HEAP_SIZE := 0x400000
19
20# Disable Function Tracer
21KBUILD_CFLAGS := $(filter-out -pg, $(KBUILD_CFLAGS))
22
23KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS))
24
25KBUILD_CFLAGS := $(KBUILD_CFLAGS) -D__KERNEL__ \
26	-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
27
28KBUILD_AFLAGS := $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
29	-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) \
30	-DKERNEL_ENTRY=$(VMLINUX_ENTRY_ADDRESS)
31
32# decompressor objects (linked with vmlinuz)
33vmlinuzobjs-y := $(obj)/head.o $(obj)/decompress.o $(obj)/string.o
34
35ifdef CONFIG_DEBUG_ZBOOT
36vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT)		   += $(obj)/dbg.o
37vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
38vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o
39vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY)		   += $(obj)/uart-alchemy.o
40vmlinuzobjs-$(CONFIG_ATH79)			   += $(obj)/uart-ath79.o
41endif
42
43extra-y += uart-ath79.c
44$(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c
45	$(call cmd,shipped)
46
47vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o $(obj)/bswapsi.o
48
49extra-y += ashldi3.c
50$(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE
51	$(call if_changed,shipped)
52
53extra-y += bswapsi.c
54$(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE
55	$(call if_changed,shipped)
56
57targets := $(notdir $(vmlinuzobjs-y))
58
59targets += vmlinux.bin
60OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
61$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
62	$(call if_changed,objcopy)
63
64tool_$(CONFIG_KERNEL_GZIP)    = gzip
65tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
66tool_$(CONFIG_KERNEL_LZ4)     = lz4
67tool_$(CONFIG_KERNEL_LZMA)    = lzma
68tool_$(CONFIG_KERNEL_LZO)     = lzo
69tool_$(CONFIG_KERNEL_XZ)      = xzkern
70
71targets += vmlinux.bin.z
72$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
73	$(call if_changed,$(tool_y))
74
75targets += piggy.o dummy.o
76OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \
77			--set-section-flags=.image=contents,alloc,load,readonly,data
78$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
79	$(call if_changed,objcopy)
80
81# Calculate the load address of the compressed kernel image
82hostprogs-y := calc_vmlinuz_load_addr
83
84ifneq ($(zload-y),)
85VMLINUZ_LOAD_ADDRESS := $(zload-y)
86else
87VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
88		$(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS))
89endif
90UIMAGE_LOADADDR = $(VMLINUZ_LOAD_ADDRESS)
91
92vmlinuzobjs-y += $(obj)/piggy.o
93
94quiet_cmd_zld = LD      $@
95      cmd_zld = $(LD) $(KBUILD_LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
96quiet_cmd_strip = STRIP	  $@
97      cmd_strip = $(STRIP) -s $@
98vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
99	$(call cmd,zld)
100	$(call cmd,strip)
101
102#
103# Some DECstations need all possible sections of an ECOFF executable
104#
105ifdef CONFIG_MACH_DECSTATION
106  e2eflag := -a
107endif
108
109# elf2ecoff can only handle 32bit image
110hostprogs-y += ../elf2ecoff
111
112ifdef CONFIG_32BIT
113	VMLINUZ = vmlinuz
114else
115	VMLINUZ = vmlinuz.32
116endif
117
118quiet_cmd_32 = OBJCOPY $@
119      cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
120vmlinuz.32: vmlinuz
121	$(call cmd,32)
122
123quiet_cmd_ecoff = ECOFF	  $@
124      cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
125vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
126	$(call cmd,ecoff)
127
128OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
129vmlinuz.bin: vmlinuz
130	$(call cmd,objcopy)
131
132OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
133vmlinuz.srec: vmlinuz
134	$(call cmd,objcopy)
135
136uzImage.bin: vmlinuz.bin FORCE
137	$(call if_changed,uimage,none)
138
139clean-files += $(objtree)/vmlinuz
140clean-files += $(objtree)/vmlinuz.32
141clean-files += $(objtree)/vmlinuz.ecoff
142clean-files += $(objtree)/vmlinuz.bin
143clean-files += $(objtree)/vmlinuz.srec
144