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 ($(SRCARCH),arm)
  30 KBUILD_CFLAGS += -marm
  31 endif
  32
  33 ifneq ($(wildcard $(obj)/include/jailhouse/config.h),)
  34 KBUILD_CFLAGS += -include $(obj)/include/jailhouse/config.h
  35 endif
  36
  37 CORE_OBJECTS = setup.o printk.o paging.o control.o lib.o
  38
  39 define filechk_config_mk
  40 (                                                                       \
  41         echo "\$$(foreach config,\$$(filter CONFIG_%,           \
  42                 \$$(.VARIABLES)), \$$(eval undefine \$$(config)))";     \
  43         if [ -f $(src)/include/jailhouse/config.h ]; then               \
  44                 sed -e "/^#define \([^[:space:]]*\)[[:space:]]*1/!d"    \
  45                     -e "s/^#define \([^[:space:]]*\)[[:space:]]*1/\1=y/" \
  46                         $(src)/include/jailhouse/config.h;              \
  47         fi                                                              \
  48 )
  49 endef
  50
  51 $(obj)/include/jailhouse/config.mk: Makefile FORCE
  52         $(call filechk,config_mk)
  53
  54 define filechk_version
  55         $(src)/../scripts/gen_version_h $(src)/..
  56 endef
  57
  58 clean-files := include/jailhouse/config.mk \
  59         include/jailhouse/version.h
  60
  61 define sed-y
  62         "/^=>/{s:=>#\(.*\):/* \1 */:; \
  63         s:^=>\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
  64         s:^=>\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
  65         s:=>::; p;}"
  66 endef
  67
  68 quiet_cmd_defines = GEN     $@
  69 define cmd_defines
  70         (set -e; \
  71          echo "#ifndef _GENERATED_ASM_DEFINES_H"; \
  72          echo "#define _GENERATED_ASM_DEFINES_H"; \
  73          echo "/*"; \
  74          echo " * This file is autogenerated. If you need to change it,"; \
  75          echo " * edit arch/$(SRCARCH)/asm-defines.c instead."; \
  76          echo " *"; \
  77          echo " * ALL MANUAL CHANGES TO THIS FILE WILL BE LOST!"; \
  78          echo " */"; \
  79          echo ""; \
  80          sed -ne $(sed-y) $<; \
  81          echo ""; \
  82          echo "#endif" ) > $@
  83 endef
  84
  85 defines-file := include/generated/asm-defines.h
  86
  87 targets := $(defines-file) arch/$(SRCARCH)/asm-defines.s
  88
  89 $(obj)/arch/$(SRCARCH)/asm-defines.s: $(src)/arch/$(SRCARCH)/asm-defines.c
  90         $(call if_changed_dep,cc_s_c)
  91
  92 $(obj)/$(defines-file): $(obj)/arch/$(SRCARCH)/asm-defines.s
  93         $(Q)mkdir -p $(dir $@)
  94         $(call cmd,defines)
  95
  96 $(obj)/include/jailhouse/version.h: $(src)/Makefile FORCE
  97         $(call filechk,version)
  98
  99 $(foreach co,$(CORE_OBJECTS),\
 100         $(eval $(obj)/$(co): $(obj)/$(defines-file)))
 101
 102 $(obj)/setup.o: $(obj)/include/jailhouse/version.h
 103
 104 arch-builtin: $(obj)/$(defines-file) $(obj)/include/jailhouse/config.mk FORCE
 105         $(Q)$(MAKE) $(build)=$(obj)/arch/$(SRCARCH) \
 106                 CONFIG_MK=$(obj)/include/jailhouse/config.mk
 107
 108 always :=
 109
 110 define BUILD_JAILHOUSE_template
 111 always += jailhouse$(1).bin
 112
 113 hypervisor$(1)-y := $$(CORE_OBJECTS) arch/$$(SRCARCH)/built-in$(1).o \
 114         hypervisor.lds
 115 targets += $$(hypervisor$(1)-y)
 116
 117 # Need fake recipe here so make will consider this a volatile target
 118 $$(obj)/arch/$$(SRCARCH)/built-in$(1).o: arch-builtin
 119         @
 120
 121 HYPERVISOR$(1)_OBJS = $$(addprefix $$(obj)/,$$(hypervisor$(1)-y))
 122
 123 LDFLAGS_hypervisor$(1).o := -T
 124
 125 targets += hypervisor$(1).o
 126 $$(obj)/hypervisor$(1).o: $$(src)/hypervisor.lds $$(HYPERVISOR$(1)_OBJS)
 127         $$(call if_changed,ld)
 128
 129 OBJCOPYFLAGS_jailhouse$(1).bin := -O binary -R .eh_frame
 130
 131 targets += jailhouse$(1).bin
 132 $$(obj)/jailhouse$(1).bin: $$(obj)/hypervisor$(1).o
 133         $$(call if_changed,objcopy)
 134 endef
 135
 136 ifneq ($(BUILD_VARIANTS),)
 137 $(foreach variant,$(BUILD_VARIANTS),\
 138         $(eval $(call BUILD_JAILHOUSE_template,-$(variant))))
 139 else
 140 $(eval $(call BUILD_JAILHOUSE_template,))
 141 endif
 142
 143 .PHONY: arch-builtin