source: mainline/boot/Makefile.grub@ dabaa83

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since dabaa83 was 84176f3, checked in by Jakub Jermář <jakub@…>, 6 years ago

arm64: Add support for the architecture

This changeset adds basic support to run HelenOS on AArch64, targeting
the QEMU virt platform.

Boot:

  • Boot relies on the EDK II firmware, GRUB2 for EFI and the HelenOS bootloader (UEFI application). EDK II loads GRUB2 from a CD, GRUB2 loads the HelenOS bootloader (via UEFI) which loads OS components.
  • UEFI applications use the PE/COFF format and must be relocatable. The first problem is solved by manually having the PE/COFF headers and tables written in assembler. The relocatable requirement is addressed by compiling the code with -fpic and having the bootloader relocate itself at its startup.

Kernel:

  • Kernel code for AArch64 consists mostly of stubbing out various architecture-specific hooks: virtual memory management, interrupt and exception handling, context switching (including FPU lazy switching), support for virtual timer, atomic sequences and barriers, cache and TLB maintenance, thread and process initialization.
  • The patch adds a kernel driver for GICv2 (interrupt controller).
  • The PL011 kernel driver is extended to allow userspace to take ownership of the console.
  • The current code is not able to dynamically obtain information about available devices on the underlying machine. The port instead implements a machine-func interface similar to the one implemented by arm32. It defines a machine for the QEMU AArch64 virt platform. The configuration (device addresses and IRQ numbers) is then baked into the machine definition.

User space:

  • Uspace code for AArch64 similarly mostly implements architecture-specific hooks: context saving/restoring, syscall support, TLS support.

The patchset allows to boot the system but user interaction with the OS
is not yet possible.

  • Property mode set to 100644
File size: 3.4 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/$(BARCH)-$(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: $(POST_OUTPUT)
50
51$(POST_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 $(IMAGE)
64endif
65
66ifeq ($(GRUB_LOADER),multiboot)
67 for module in $(COMPONENTS) ; do \
68 cp "$$module" $(BOOT)/ ; \
69 done
70endif
71ifeq ($(GRUB_LOADER),chainloader)
72 cp "$(BOOT_OUTPUT)" $(BOOT)/
73endif
74
75 echo "set default=0" > $(BOOT_CONFIG)
76 echo "set timeout=10" >> $(BOOT_CONFIG)
77 echo "" >> $(BOOT_CONFIG)
78
79ifeq ($(GRUB_ARCH),pc)
80 echo "insmod vbe" >> $(BOOT_CONFIG)
81 echo "insmod vga" >> $(BOOT_CONFIG)
82endif
83ifeq ($(GRUB_ARCH),efi)
84 echo "insmod efi_gop" >> $(BOOT_CONFIG)
85 echo "insmod efi_uga" >> $(BOOT_CONFIG)
86endif
87 echo "" >> $(BOOT_CONFIG)
88
89 echo "menuentry 'HelenOS $(RELEASE)' --class helenos --class os {" >> $(BOOT_CONFIG)
90ifeq ($(GRUB_LOADER),multiboot)
91 for module in $(MODULES) ; do \
92 echo " echo 'Loading $$module'" >> $(BOOT_CONFIG) ; \
93 if [ "$$module" = "kernel.elf" ] ; then \
94 echo " $(MULTIBOOT_CMD) /boot/$$module" >> $(BOOT_CONFIG) ; \
95 else \
96 echo " $(MODULE_CMD) /boot/$$module /boot/$$module" >> $(BOOT_CONFIG) ; \
97 fi \
98 done
99endif
100ifeq ($(GRUB_LOADER),chainloader)
101 echo " echo 'Loading $(BOOT_OUTPUT)'" >> $(BOOT_CONFIG)
102 echo " chainloader /boot/$(BOOT_OUTPUT)" >> $(BOOT_CONFIG)
103 echo " boot" >> $(BOOT_CONFIG)
104endif
105 echo "}" >> $(BOOT_CONFIG)
106
107clean:
108 rm -fr $(DISTROOT)
109
110include Makefile.initrd
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