hypervisor/Makefile

   1 #
   2 # Jailhouse, a Linux-based partitioning hypervisor
   3 #
   4 # Copyright (c) Siemens AG, 2013
   5 # Copyright (c) Valentine Sinitsyn, 2014
   6 #
   7 # Authors:
   8 #  Jan Kiszka <jan.kiszka@siemens.com>
   9 #  Valentine Sinitsyn <valentine.sinitsyn@gmail.com>
  10 #
  11 # This work is licensed under the terms of the GNU GPL, version 2.  See
  12 # the COPYING file in the top-level directory.
  13 #
  14 # asm-defines.h generation code derived from Linux kernel.
  15 #
  16
  17 LINUXINCLUDE := -I$(src)/arch/$(SRCARCH)/include -I$(src)/include
  18 KBUILD_CFLAGS := -g -Os -Wall -Wstrict-prototypes -Wtype-limits \
  19                  -Wmissing-declarations -Wmissing-prototypes \
  20                  -fno-strict-aliasing -fno-pic -fno-common \
  21                  -fno-stack-protector -fno-builtin-ffsl
  22
  23 ifeq ($(SRCARCH),x86)
  24 KBUILD_CFLAGS += -mcmodel=kernel
  25 KBUILD_CPPFLAGS += -m64
  26 BUILD_VARIANTS := amd intel
  27 endif
  28
  29 ifeq ($(SRCARCH),arm)
  30 KBUILD_CFLAGS += -marm
  31 KBUILD_CPPFLAGS += -DARCH_LINK
  32 endif
  33
  34 ifneq ($(wildcard $(obj)/include/jailhouse/config.h),)
  35 KBUILD_CFLAGS += -include $(obj)/include/jailhouse/config.h
  36 endif
  37
  38 CORE_OBJECTS = setup.o printk.o paging.o control.o lib.o
  39
  40 define filechk_config_mk
  41 (                                                                       \
  42         echo "\$$(foreach config,\$$(filter CONFIG_%,           \
  43                 \$$(.VARIABLES)), \$$(eval undefine \$$(config)))";     \
  44         if [ -f $(src)/include/jailhouse/config.h ]; then               \
  45                 sed -e "/^#define \([^[:space:]]*\)[[:space:]]*1/!d"    \
  46                     -e "s/^#define \([^[:space:]]*\)[[:space:]]*1/\1=y/" \
  47                         $(src)/include/jailhouse/config.h;              \
  48         fi                                                              \
  49 )
  50 endef
  51
  52 $(obj)/include/jailhouse/config.mk: Makefile FORCE
  53         $(call filechk,config_mk)
  54
  55 define filechk_version
  56         $(src)/../scripts/gen_version_h $(src)/..
  57 endef
  58
  59 clean-files := $(obj)/include/jailhouse/config.mk \
  60         $(obj)/include/jailhouse/version.h
  61
  62 define sed-y
  63         "/^=>/{s:=>#\(.*\):/* \1 */:; \
  64         s:^=>\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
  65         s:^=>\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
  66         s:=>::; p;}"
  67 endef
  68
  69 quiet_cmd_defines = GEN     $@
  70 define cmd_defines
  71         (set -e; \
  72          echo "#ifndef _GENERATED_ASM_DEFINES_H"; \
  73          echo "#define _GENERATED_ASM_DEFINES_H"; \
  74          echo "/*"; \
  75          echo " * This file is autogenerated. If you need to change it,"; \
  76          echo " * edit arch/$(SRCARCH)/asm-defines.c instead."; \
  77          echo " *"; \
  78          echo " * ALL MANUAL CHANGES TO THIS FILE WILL BE LOST!"; \
  79          echo " */"; \
  80          echo ""; \
  81          sed -ne $(sed-y) $<; \
  82          echo ""; \
  83          echo "#endif" ) > $@
  84 endef
  85
  86 defines-file := include/generated/asm-defines.h
  87
  88 targets := $(defines-file) arch/$(SRCARCH)/asm-defines.s
  89
  90 $(obj)/arch/$(SRCARCH)/asm-defines.s: $(src)/arch/$(SRCARCH)/asm-defines.c
  91         $(call if_changed_dep,cc_s_c)
  92
  93 $(obj)/$(defines-file): $(obj)/arch/$(SRCARCH)/asm-defines.s
  94         $(Q)mkdir -p $(dir $@)
  95         $(call cmd,defines)
  96
  97 $(obj)/include/jailhouse/version.h: $(src)/Makefile FORCE
  98         $(call filechk,version)
  99
 100 $(foreach co,$(CORE_OBJECTS),\
 101         $(eval $(obj)/$(co): $(obj)/$(defines-file)))
 102
 103 $(obj)/setup.o: $(obj)/include/jailhouse/version.h
 104
 105 arch-builtin: $(obj)/$(defines-file) $(obj)/include/jailhouse/config.mk FORCE
 106         $(Q)$(MAKE) $(build)=$(obj)/arch/$(SRCARCH) \
 107                 CONFIG_MK=$(obj)/include/jailhouse/config.mk
 108
 109 always :=
 110
 111 define BUILD_JAILHOUSE_template
 112 always += jailhouse$(1).bin
 113
 114 hypervisor$(1)-y := $$(CORE_OBJECTS) arch/$$(SRCARCH)/built-in$(1).o \
 115         hypervisor.lds
 116 targets += $$(hypervisor$(1)-y)
 117
 118 # Need fake recipe here so make will consider this a volatile target
 119 $$(obj)/arch/$$(SRCARCH)/built-in$(1).o: arch-builtin
 120         @
 121
 122 HYPERVISOR$(1)_OBJS = $$(addprefix $$(obj)/,$$(hypervisor$(1)-y))
 123
 124 LDFLAGS_hypervisor$(1).o := -T
 125
 126 targets += hypervisor$(1).o
 127 $$(obj)/hypervisor$(1).o: $$(src)/hypervisor.lds $$(HYPERVISOR$(1)_OBJS)
 128         $$(call if_changed,ld)
 129
 130 OBJCOPYFLAGS_jailhouse$(1).bin := -O binary -R .eh_frame
 131
 132 targets += jailhouse$(1).bin
 133 $$(obj)/jailhouse$(1).bin: $$(obj)/hypervisor$(1).o
 134         $$(call if_changed,objcopy)
 135 endef
 136
 137 ifneq ($(BUILD_VARIANTS),)
 138 $(foreach variant,$(BUILD_VARIANTS),\
 139         $(eval $(call BUILD_JAILHOUSE_template,-$(variant))))
 140 else
 141 $(eval $(call BUILD_JAILHOUSE_template,))
 142 endif
 143
 144 .PHONY: arch-builtin