source: mainline/boot/Makefile.grub@ aaa3c457

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since aaa3c457 was cfdeedc, checked in by Jiří Zárevúcky <zarevucky.jiri@…>, 7 years ago

Keep kernel in ELF format

By keeping kernel in an ELF file (instead of converting it to
a flat binary), we can use the information it contains, like
symbol table and debug info.

We can also later implement more advanced functionality, like
loading kernel at multiple discontiguous blocks, or loading
a position-independent kernel at a randomized address.

Currently the functionality is quite restricted, to keep changes
to a minimum. Code in boot/generic/src/kernel.c validates that
the kernel image was built with the same addresses as the boot
loader uses, giving an extra level of sanity checking compared
to a flat binary.

  • Property mode set to 100644
File size: 3.1 KB
Line 
1#
2# Copyright (c) 2006 Martin Decky
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions
7# are met:
8#
9# - Redistributions of source code must retain the above copyright
10# notice, this list of conditions and the following disclaimer.
11# - Redistributions in binary form must reproduce the above copyright
12# notice, this list of conditions and the following disclaimer in the
13# documentation and/or other materials provided with the distribution.
14# - The name of the author may not be used to endorse or promote products
15# derived from this software without specific prior written permission.
16#
17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27#
28
29.PHONY: all build_dist clean
30
31include Makefile.common
32
33GRUB = grub.$(GRUB_ARCH)
34BOOT = $(DISTROOT)/boot
35BOOT_CONFIG = $(BOOT)/grub/grub.cfg
36
37ELTORITO = boot/grub/$(GRUB_ARCH).img
38IMAGE = $(DISTROOT)/$(ELTORITO)
39
40ifeq ($(GRUB_ARCH),pc)
41 MULTIBOOT_CMD = multiboot
42 MODULE_CMD = module
43endif
44ifeq ($(GRUB_ARCH),efi)
45 MULTIBOOT_CMD = multiboot2
46 MODULE_CMD = module2
47endif
48
49all: $(BOOT_OUTPUT)
50
51$(BOOT_OUTPUT): build_dist
52ifeq ($(GRUB_ARCH),pc)
53 $(GENISOIMAGE) -J -r -input-charset utf-8 -V "HelenOS-CD" -eltorito-boot $(ELTORITO) -no-emul-boot -boot-load-size 64 -boot-info-table -o $@ $(DISTROOT)/
54endif
55ifeq ($(GRUB_ARCH),efi)
56 $(GENISOIMAGE) -J -r -input-charset utf-8 -V "HelenOS-CD" --efi-boot $(ELTORITO) -o $@ $(DISTROOT)/
57endif
58
59build_dist: clean $(COMPONENTS)
60 mkdir -p $(BOOT)
61 cp -r -L $(GRUB) $(BOOT)/grub
62ifeq ($(GRUB_ARCH),efi)
63 gunzip $(IMAGE)
64endif
65
66 for module in $(COMPONENTS) ; do \
67 cp "$$module" $(BOOT)/ ; \
68 done
69
70 echo "set default=0" > $(BOOT_CONFIG)
71 echo "set timeout=10" >> $(BOOT_CONFIG)
72 echo "" >> $(BOOT_CONFIG)
73
74ifeq ($(GRUB_ARCH),pc)
75 echo "insmod vbe" >> $(BOOT_CONFIG)
76 echo "insmod vga" >> $(BOOT_CONFIG)
77endif
78ifeq ($(GRUB_ARCH),efi)
79 echo "insmod efi_gop" >> $(BOOT_CONFIG)
80 echo "insmod efi_uga" >> $(BOOT_CONFIG)
81endif
82 echo "" >> $(BOOT_CONFIG)
83
84 echo "menuentry 'HelenOS $(RELEASE)' --class helenos --class os {" >> $(BOOT_CONFIG)
85 for module in $(MODULES) ; do \
86 echo " echo 'Loading $$module'" >> $(BOOT_CONFIG) ; \
87 if [ "$$module" = "kernel.elf" ] ; then \
88 echo " $(MULTIBOOT_CMD) /boot/$$module" >> $(BOOT_CONFIG) ; \
89 else \
90 echo " $(MODULE_CMD) /boot/$$module /boot/$$module" >> $(BOOT_CONFIG) ; \
91 fi \
92 done
93 echo "}" >> $(BOOT_CONFIG)
94
95clean:
96 rm -fr $(DISTROOT)
97
98include Makefile.initrd
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