1 # Makefile for GeekOS kernel, userspace, and tools
2 # Copyright (c) 2004,2005 David H. Hovemeyer <daveho@cs.umd.edu>
5 # This is free software. You are permitted to use,
6 # redistribute, and modify it as specified in the file "COPYING".
8 # Required software to build GeekOS:
9 # - GNU Make (http://www.gnu.org/software/make)
10 # - gcc 2.95.2 generating code for target (i386/ELF) and host platforms
11 # - nasm (http://nasm.sourceforge.net)
12 # - Perl5, AWK (any version), egrep
14 # Cygwin (http://cygwin.com) may be used to build GeekOS.
15 # Make sure that gcc, binutils, nasm, and perl are installed.
18 # - This makefile has been written carefully to work correctly
19 # with the -j (parallel make) option. I regularly use "make -j 2"
20 # to speed the build process on 2 processor systems.
23 # Base address of kernel
25 # Note: at top of memory minus three pages (GDT/TSS/IDT)
29 # Note that the code will initially load at 0x10000
31 # The setup code needs to copy it up to this address and jump there
33 KERNEL_BASE_ADDR := 0x00010000
35 # Kernel entry point function
36 KERNEL_ENTRY = $(SYM_PFX)Main
40 VPATH := $(PROJECT_ROOT)/src
42 #when -DNDEBUG is set the kassert functions are disabled
44 JRLDEBUG= -DSERIAL_PRINT_DEBUG=1 -DSERIAL_PRINT_DEBUG_LEVEL=10 -DSERIAL_PRINT=1
48 #Peter's compile flags
51 # Figure out if we're compiling with cygwin, http://cygwin.com
52 SYSTEM_NAME := $(shell uname -s)
53 ifeq ($(findstring CYGWIN,$(SYSTEM_NAME)),CYGWIN)
55 EXTRA_C_OPTS := -DNEED_UNDERSCORE -DGNU_WIN32
56 EXTRA_NASM_OPTS := -DNEED_UNDERSCORE
58 EXTRA_CC_USER_OPTS := -Dmain=geekos_main
64 # ----------------------------------------------------------------------
66 # Various options specifying how GeekOS should be built,
67 # what source files to build, which user programs to build,
68 # etc. This is generally the only section of the makefile
69 # that will need to be modified.
70 # ----------------------------------------------------------------------
72 # List of targets to build by default.
73 # These targets encompass everything needed to boot
75 ALL_TARGETS := vmm.img vm_kernel
79 KERNEL_C_SRCS := idt.c int.c trap.c irq.c io.c \
81 keyboard.c screen.c timer.c \
83 gdt.c tss.c segment.c \
88 debug.c vmm_stubs.c vm.c\
91 # Kernel object files built from C source files
92 KERNEL_C_OBJS := $(KERNEL_C_SRCS:%.c=geekos/%.o)
94 # Kernel assembly files
95 KERNEL_ASM_SRCS := lowlevel.asm
97 KERNEL_GAS_SRCS := testvm.s
99 # Kernel object files build from assembler source files
100 KERNEL_ASM_OBJS := $(KERNEL_ASM_SRCS:%.asm=geekos/%.o)
102 KERNEL_GAS_OBJS := $(KERNEL_GAS_SRCS:%.s=geekos/%.o)
105 # All kernel object files
106 KERNEL_OBJS := $(KERNEL_C_OBJS) \
107 $(KERNEL_ASM_OBJS) $(KERNEL_GAS_OBJS)
109 # Common library source files.
110 # This library is linked into both the kernel and user programs.
111 # It provides string functions and generic printf()-style
113 COMMON_C_SRCS := fmtout.c string.c memmove.c
115 # Common library object files.
116 COMMON_C_OBJS := $(COMMON_C_SRCS:%.c=common/%.o)
118 VMM_ASM_SRCS := svm_lowlevel.asm \
121 VMM_ASM_OBJS := $(VMM_ASM_SRCS:%.asm=palacios/%.o)
124 VMM_C_SRCS := vm_guest.c \
125 svm.c svm_handler.c vmm.c vmm_util.c svm_ctrl_regs.c \
126 vmcb.c vmm_mem.c vmm_paging.c vmm_io.c vmm_debug.c svm_io.c \
127 vmm_intr.c vmm_irq.c\
128 vmm_shadow_paging.c vm_guest_mem.c \
129 vm_dev.c vmm_dev_mgr.c \
131 # vmx.c vmcs_gen.c vmcs.c
133 VMM_C_OBJS := $(VMM_C_SRCS:%.c=palacios/%.o)
135 VMM_OBJS := $(VMM_C_OBJS) $(VMM_ASM_OBJS)
137 DEVICE_C_SRCS := nvram.c timer.c simple_pic.c 8259a.c
139 DEVICE_C_OBJS := $(DEVICE_C_SRCS:%.c=devices/%.o)
141 DEVICE_OBJS := $(DEVICE_C_OBJS)
145 # ----------------------------------------------------------------------
147 # This section defines programs that are used to build GeekOS.
148 # ----------------------------------------------------------------------
150 # Uncomment if cross compiling
151 TARGET_CC_PREFIX := $(PROJECT_ROOT)/../devtools/i386/bin/i386-elf-
152 #TARGET_CC_PREFIX := i386-elf-
154 # Target C compiler. gcc 2.95.2 or later should work.
155 TARGET_CC := $(TARGET_CC_PREFIX)gcc
156 #TARGET_CC := $(TARGET_CC_PREFIX)gcc34 -m32
158 # Host C compiler. This is used to compile programs to execute on
159 # the host platform, not the target (x86) platform. On x86/ELF
160 # systems, such as Linux and FreeBSD, it can generally be the same
161 # as the target C compiler.
164 # Target linker. GNU ld is probably to only one that will work.
165 TARGET_LD := $(TARGET_CC_PREFIX)ld -melf_i386
168 TARGET_AR := $(TARGET_CC_PREFIX)ar
171 TARGET_RANLIB := $(TARGET_CC_PREFIX)ranlib
174 TARGET_NM := $(TARGET_CC_PREFIX)nm
177 TARGET_OBJCOPY := $(TARGET_CC_PREFIX)objcopy
179 # Nasm (http://nasm.sourceforge.net)
180 NASM := $(PROJECT_ROOT)/../devtools/bin/nasm
181 #NASM := /opt/vmm-tools/bin/nasm
185 # Tool to build PFAT filesystem images.
186 BUILDFAT := tools/builtFat.exe
191 # Pad a file so its size is a multiple of some unit (i.e., sector size)
192 PAD := $(PERL) $(PROJECT_ROOT)/scripts/pad
194 # Create a file filled with zeroes.
195 ZEROFILE := $(PERL) $(PROJECT_ROOT)/scripts/zerofile
197 # Calculate size of file in sectors
198 NUMSECS := $(PERL) $(PROJECT_ROOT)/scripts/numsecs
201 # ----------------------------------------------------------------------
203 # Options passed to the tools.
204 # ----------------------------------------------------------------------
206 # Flags used for all C source files
207 GENERAL_OPTS := -O -Wall $(EXTRA_C_OPTS) $(JRLDEBUG) $(PADFLAGS) -fPIC
208 CC_GENERAL_OPTS := $(GENERAL_OPTS) -Werror
210 # Flags used for kernel C source files
211 CC_KERNEL_OPTS := -g -DGEEKOS -I$(PROJECT_ROOT)/include
213 # Flags used for VMM C source files
214 CC_VMM_OPTS := -g -I$(PROJECT_ROOT)/include
216 # Flags used for VMM C ASM files
217 NASM_VMM_OPTS := -I$(PROJECT_ROOT)/src/palacios/ -f elf $(EXTRA_NASM_OPTS)
219 # Flags user for kernel assembly files
220 NASM_KERNEL_OPTS := -I$(PROJECT_ROOT)/src/geekos/ -f elf $(EXTRA_NASM_OPTS)
222 # Flags used for common library and libc source files
223 CC_USER_OPTS := -I$(PROJECT_ROOT)/include -I$(PROJECT_ROOT)/include/libc \
224 $(EXTRA_CC_USER_OPTS)
226 # Flags passed to objcopy program (strip unnecessary sections from kernel.exe)
227 OBJCOPY_FLAGS := -R .dynamic -R .note -R .comment
229 # ----------------------------------------------------------------------
231 # Describes how to compile the source files.
232 # ----------------------------------------------------------------------
234 # Compilation of kernel C source files
236 geekos/%.o : geekos/%.c
237 $(TARGET_CC) -c $(CC_GENERAL_OPTS) $(CC_KERNEL_OPTS) $< -o geekos/$*.o
240 # Compilation of kernel assembly source files
241 geekos/%.o : geekos/%.asm
242 $(NASM) $(NASM_KERNEL_OPTS) $< -o geekos/$*.o
244 # Compilation of test VM
245 geekos/%.o : geekos/%.s
246 $(AS) $< -o geekos/$*.o
248 geekos/%.o : geekos/%.S
249 $(TARGET_CC) -c $(CC_GENERAL_OPTS) $(CC_KERNEL_OPTS) $< -o geekos/$*.o
251 # Compilation of common library C source files
252 common/%.o : common/%.c
253 $(TARGET_CC) -c $(CC_GENERAL_OPTS) $(CC_USER_OPTS) $< -o common/$*.o
255 palacios/%.o : palacios/%.c
256 $(TARGET_CC) -c $(CC_GENERAL_OPTS) $(CC_VMM_OPTS) $< -o palacios/$*.o
258 palacios/%.o : palacios/%.asm
259 $(NASM) $(NASM_VMM_OPTS) $< -o palacios/$*.o
261 devices/%.o : devices/%.c
262 $(TARGET_CC) -c $(CC_GENERAL_OPTS) $(CC_VMM_OPTS) $< -o devices/$*.o
264 devices/%.o : devices/%.asm
265 $(NASM) $(NASM_VMM_OPTS) $< -o devices/$*.o
267 # ----------------------------------------------------------------------
269 # Specifies files to be built
270 # ----------------------------------------------------------------------
272 # Default target - see definition of ALL_TARGETS in Configuration section
276 #geekos/vmx_lowlevel.o: $(PROJECT_ROOT)/src/geekos/vmx_lowlevel.asm
279 # -I$(PROJECT_ROOT)/src/geekos/ \
280 # $(PROJECT_ROOT)/src/geekos/vmx_lowlevel.asm \
284 #geekos/test: geekos/test.o geekos/vmcs.o geekos/vmx_lowlevel.o
285 # $(CC) geekos/test.o geekos/vmcs.o geekos/vmx_lowlevel.o -o geekos/test
287 # Standard floppy image - just boots the kernel
288 fd.img : geekos/fd_boot.bin geekos/setup.bin geekos/kernel.bin vm_kernel
289 cat geekos/fd_boot.bin geekos/setup.bin geekos/kernel.bin > _temp
291 cat _temp vm_kernel > $@
295 $(PAD) vmm.img 1474560
298 (cd ../src/vmboot/rombios; make)
301 ../scripts/make_payload.pl payload_layout.txt vm_kernel
305 # make ready to boot over PXE
307 cp vmm.img /tftpboot/vmm.img
311 # Floppy boot sector (first stage boot loader).
312 geekos/fd_boot.bin : geekos/setup.bin geekos/kernel.bin $(PROJECT_ROOT)/src/geekos/fd_boot.asm vm_kernel
314 -I$(PROJECT_ROOT)/src/geekos/ \
315 -DNUM_SETUP_SECTORS=`$(NUMSECS) geekos/setup.bin` \
316 -DNUM_KERN_SECTORS=`$(NUMSECS) geekos/kernel.bin` \
317 -DNUM_VM_KERNEL_SECTORS=`$(NUMSECS) vm_kernel` \
318 $(PROJECT_ROOT)/src/geekos/fd_boot.asm \
321 # Setup program (second stage boot loader).
322 geekos/setup.bin : geekos/kernel.bin $(PROJECT_ROOT)/src/geekos/setup.asm
324 -I$(PROJECT_ROOT)/src/geekos/ \
325 -DENTRY_POINT=0x`egrep 'Main$$' geekos/kernel.syms |awk '{print $$1}'` \
326 -DVMM_SIZE=`$(NUMSECS) geekos/kernel.bin` \
327 -DGUEST_SIZE=`$(NUMSECS) vm_kernel` \
328 $(PROJECT_ROOT)/src/geekos/setup.asm \
332 # Loadable (flat) kernel image.
333 geekos/kernel.bin : geekos/kernel.exe
334 $(TARGET_OBJCOPY) $(OBJCOPY_FLAGS) -S -O binary geekos/kernel.exe geekos/kernel.bin
337 # The kernel executable and symbol map.
338 geekos/kernel.exe : $(KERNEL_OBJS) $(COMMON_C_OBJS) $(VMM_OBJS) $(DEVICE_OBJS)
339 $(TARGET_LD) -o geekos/kernel.exe -Ttext $(KERNEL_BASE_ADDR) -e $(KERNEL_ENTRY) \
340 $(KERNEL_OBJS) $(COMMON_C_OBJS) $(VMM_OBJS) $(DEVICE_OBJS)
341 $(TARGET_NM) geekos/kernel.exe > geekos/kernel.syms
349 @echo "VM kernel lives at 0x100000 and is" `$(NUMSECS) vm_kernel` "sectors long"
354 # Clean build directories of generated files
356 for d in geekos common libc user tools palacios devices; do \
357 (cd $$d && rm -f *); \
361 # Build header file dependencies, so source files are recompiled when
362 # header files they depend on are modified.
363 depend : $(GENERATED_LIBC_SRCS)
364 $(TARGET_CC) -M $(CC_GENERAL_OPTS) $(CC_KERNEL_OPTS) \
365 $(KERNEL_C_SRCS:%.c=$(PROJECT_ROOT)/src/geekos/%.c) \
366 | $(PERL) -n -e 's,^(\S),geekos/$$1,;print' \
368 $(TARGET_CC) -M $(CC_GENERAL_OPTS) $(CC_USER_OPTS) \
369 $(COMMON_C_SRCS:%.c=$(PROJECT_ROOT)/src/common/%.c) \
370 | $(PERL) -n -e 's,^(\S),common/$$1,;print' \
372 $(TARGET_CC) -M $(CC_GENERAL_OPTS) $(CC_KERNEL_OPTS) \
373 $(VMM_C_SRCS:%.c=$(PROJECT_ROOT)/src/palacios/%.c) \
374 | $(PERL) -n -e 's,^(\S),palacios/$$1,;print' \
376 $(TARGET_CC) -M $(CC_GENERAL_OPTS) $(CC_KERNEL_OPTS) \
377 $(DEVICE_C_SRCS:%.c=$(PROJECT_ROOT)/src/devices/%.c) \
378 | $(PERL) -n -e 's,^(\S),devices/$$1,;print' \
381 # By default, there are no header file dependencies.