xref: /openbmc/linux/arch/mips/boot/compressed/Makefile (revision f3539c12)
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 := $(shell echo $(KBUILD_CFLAGS) | sed -e "s/-pg//")
22
23KBUILD_CFLAGS := $(filter-out -fstack-protector, $(KBUILD_CFLAGS))
24
25KBUILD_CFLAGS := $(LINUXINCLUDE) $(KBUILD_CFLAGS) -D__KERNEL__ \
26	-DBOOT_HEAP_SIZE=$(BOOT_HEAP_SIZE) -D"VMLINUX_LOAD_ADDRESS_ULL=$(VMLINUX_LOAD_ADDRESS)ull"
27
28KBUILD_AFLAGS := $(LINUXINCLUDE) $(KBUILD_AFLAGS) -D__ASSEMBLY__ \
29	-DBOOT_HEAP_SIZE=$(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 $(obj)/bswapsi.o
48
49extra-y += ashldi3.c bswapsi.c
50$(obj)/ashldi3.o $(obj)/bswapsi.o: KBUILD_CFLAGS += -I$(srctree)/arch/mips/lib
51$(obj)/ashldi3.c $(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c
52	$(call cmd,shipped)
53
54targets := $(notdir $(vmlinuzobjs-y))
55
56targets += vmlinux.bin
57OBJCOPYFLAGS_vmlinux.bin := $(OBJCOPYFLAGS) -O binary -R .comment -S
58$(obj)/vmlinux.bin: $(KBUILD_IMAGE) FORCE
59	$(call if_changed,objcopy)
60
61tool_$(CONFIG_KERNEL_GZIP)    = gzip
62tool_$(CONFIG_KERNEL_BZIP2)   = bzip2
63tool_$(CONFIG_KERNEL_LZ4)     = lz4
64tool_$(CONFIG_KERNEL_LZMA)    = lzma
65tool_$(CONFIG_KERNEL_LZO)     = lzo
66tool_$(CONFIG_KERNEL_XZ)      = xzkern
67
68targets += vmlinux.bin.z
69$(obj)/vmlinux.bin.z: $(obj)/vmlinux.bin FORCE
70	$(call if_changed,$(tool_y))
71
72targets += piggy.o dummy.o
73OBJCOPYFLAGS_piggy.o := --add-section=.image=$(obj)/vmlinux.bin.z \
74			--set-section-flags=.image=contents,alloc,load,readonly,data
75$(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
76	$(call if_changed,objcopy)
77
78# Calculate the load address of the compressed kernel image
79hostprogs-y := calc_vmlinuz_load_addr
80
81ifneq ($(zload-y),)
82VMLINUZ_LOAD_ADDRESS := $(zload-y)
83else
84VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
85		$(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS))
86endif
87
88vmlinuzobjs-y += $(obj)/piggy.o
89
90quiet_cmd_zld = LD      $@
91      cmd_zld = $(LD) $(LDFLAGS) -Ttext $(VMLINUZ_LOAD_ADDRESS) -T $< $(vmlinuzobjs-y) -o $@
92quiet_cmd_strip = STRIP	  $@
93      cmd_strip = $(STRIP) -s $@
94vmlinuz: $(src)/ld.script $(vmlinuzobjs-y) $(obj)/calc_vmlinuz_load_addr
95	$(call cmd,zld)
96	$(call cmd,strip)
97
98#
99# Some DECstations need all possible sections of an ECOFF executable
100#
101ifdef CONFIG_MACH_DECSTATION
102  e2eflag := -a
103endif
104
105# elf2ecoff can only handle 32bit image
106hostprogs-y += ../elf2ecoff
107
108ifdef CONFIG_32BIT
109	VMLINUZ = vmlinuz
110else
111	VMLINUZ = vmlinuz.32
112endif
113
114quiet_cmd_32 = OBJCOPY $@
115      cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
116vmlinuz.32: vmlinuz
117	$(call cmd,32)
118
119quiet_cmd_ecoff = ECOFF	  $@
120      cmd_ecoff = $< $(VMLINUZ) $@ $(e2eflag)
121vmlinuz.ecoff: $(obj)/../elf2ecoff $(VMLINUZ)
122	$(call cmd,ecoff)
123
124OBJCOPYFLAGS_vmlinuz.bin := $(OBJCOPYFLAGS) -O binary
125vmlinuz.bin: vmlinuz
126	$(call cmd,objcopy)
127
128OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec
129vmlinuz.srec: vmlinuz
130	$(call cmd,objcopy)
131
132clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec}
133