source: mainline/boot/Makefile.grub@ ebbc03c7

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since ebbc03c7 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
RevLine 
[d6b42a7]1#
[df4ed85]2# Copyright (c) 2006 Martin Decky
[d6b42a7]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
[4872160]29.PHONY: all build_dist clean
30
[af7a26b]31include Makefile.common
32
[a114e09]33GRUB = grub/$(BARCH)-$(GRUB_ARCH)
[83285fd]34BOOT = $(DISTROOT)/boot
[cfb1217]35BOOT_CONFIG = $(BOOT)/grub/grub.cfg
[83285fd]36
37ELTORITO = boot/grub/$(GRUB_ARCH).img
38IMAGE = $(DISTROOT)/$(ELTORITO)
39
40ifeq ($(GRUB_ARCH),pc)
[1f5c9c96]41 MULTIBOOT_CMD = multiboot
42 MODULE_CMD = module
[83285fd]43endif
44ifeq ($(GRUB_ARCH),efi)
[1f5c9c96]45 MULTIBOOT_CMD = multiboot2
46 MODULE_CMD = module2
[83285fd]47endif
[4872160]48
[a43dfcb]49all: $(POST_OUTPUT)
[4872160]50
[a43dfcb]51$(POST_OUTPUT): build_dist
[83285fd]52ifeq ($(GRUB_ARCH),pc)
[9c96634]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 $@ $(DISTROOT)/
[83285fd]54endif
55ifeq ($(GRUB_ARCH),efi)
[9c96634]56 $(GENISOIMAGE) -J -r -input-charset utf-8 -V "HelenOS-CD" --efi-boot $(ELTORITO) -o $@ $(DISTROOT)/
[83285fd]57endif
[c785296]58
[239e32b8]59build_dist: clean $(COMPONENTS)
[83285fd]60 mkdir -p $(BOOT)
[c573e0f]61 cp -r -L $(GRUB) $(BOOT)/grub
[83285fd]62ifeq ($(GRUB_ARCH),efi)
63 gunzip $(IMAGE)
64endif
[f1380b7]65
[84176f3]66ifeq ($(GRUB_LOADER),multiboot)
[4872160]67 for module in $(COMPONENTS) ; do \
[83285fd]68 cp "$$module" $(BOOT)/ ; \
[4872160]69 done
[84176f3]70endif
71ifeq ($(GRUB_LOADER),chainloader)
72 cp "$(BOOT_OUTPUT)" $(BOOT)/
73endif
[f1380b7]74
[83285fd]75 echo "set default=0" > $(BOOT_CONFIG)
76 echo "set timeout=10" >> $(BOOT_CONFIG)
77 echo "" >> $(BOOT_CONFIG)
[f1380b7]78
[1f5c9c96]79ifeq ($(GRUB_ARCH),pc)
80 echo "insmod vbe" >> $(BOOT_CONFIG)
81 echo "insmod vga" >> $(BOOT_CONFIG)
82endif
83ifeq ($(GRUB_ARCH),efi)
84 echo "insmod efi_gop" >> $(BOOT_CONFIG)
85 echo "insmod efi_uga" >> $(BOOT_CONFIG)
86endif
87 echo "" >> $(BOOT_CONFIG)
[f1380b7]88
[83285fd]89 echo "menuentry 'HelenOS $(RELEASE)' --class helenos --class os {" >> $(BOOT_CONFIG)
[84176f3]90ifeq ($(GRUB_LOADER),multiboot)
[4872160]91 for module in $(MODULES) ; do \
[83285fd]92 echo " echo 'Loading $$module'" >> $(BOOT_CONFIG) ; \
[cfdeedc]93 if [ "$$module" = "kernel.elf" ] ; then \
[1f5c9c96]94 echo " $(MULTIBOOT_CMD) /boot/$$module" >> $(BOOT_CONFIG) ; \
[4872160]95 else \
[c40f385]96 echo " $(MODULE_CMD) /boot/$$module /boot/$$module" >> $(BOOT_CONFIG) ; \
[4872160]97 fi \
98 done
[84176f3]99endif
100ifeq ($(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
[83285fd]105 echo "}" >> $(BOOT_CONFIG)
[c785296]106
[cc1f8d4]107clean:
[4872160]108 rm -fr $(DISTROOT)
[239e32b8]109
110include Makefile.initrd
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