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Erico Nunes 273a27804a boot/grub2: enable support for arm and aarch64 targets
This commit enables the arm-uboot, arm-efi and aarch64-efi grub2
platforms in Buildroot.

With the uboot platform, the grub2 image gets built as a u-boot image
and is loaded from u-boot through a regular "bootm". The only
requirement from the u-boot side in order to allow this is that u-boot
is built with CONFIG_API enabled. CONFIG_API seems to not be enabled
by default in most in-tree configurations, however, it seems to be
available for quite some time now. So it might be possible to use this
even on older u-boot versions. This is available only for arm
(32-bit).

With the efi platform, grub2 gets built as an EFI executable. This
allows EFI firmware to find and load it similarly as it can be done
for x86_64. Also, since u-boot v2016.05, u-boot is able to load and
boot an EFI executable, so the uboot efi platform can also be used
from u-boot in recent versions. This has been enabled (mostly) by
default for ARM u-boot. efi platform is available for both arm and
aarch64.

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
[Thomas: move the BR2_USE_MMU dependency in
BR2_TARGET_GRUB2_ARCH_SUPPORTS]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2018-11-26 21:08:13 +01:00
arch arch: drop BR2_GCC_TARGET_CPU_REVISION option 2018-10-01 14:52:32 +02:00
board orangepi_zero_defconfig: bump linux to 4.19.3, u-boot to 2018.11 2018-11-23 10:48:03 +01:00
boot boot/grub2: enable support for arm and aarch64 targets 2018-11-26 21:08:13 +01:00
configs orangepi_zero_defconfig: bump linux to 4.19.3, u-boot to 2018.11 2018-11-23 10:48:03 +01:00
docs Update for 2018.11-rc1 2018-11-09 22:56:48 +01:00
fs Makefile: rework main directory creation logic 2018-11-26 19:09:46 +01:00
linux linux: bump default to 4.19.2 2018-11-22 17:37:34 +01:00
package package/pkg-generic: adjust config scripts tweaks for per-package directories 2018-11-26 19:12:18 +01:00
support boot/grub2: add option to install tools 2018-11-26 20:59:33 +01:00
system system: update Config.in comment about systemd dependencies 2018-09-15 00:05:48 +02:00
toolchain toolchain: add 4.19.x choice for headers 2018-11-22 17:20:30 +01:00
utils utils/test-pkg: use the correct config prefix when merging 2018-11-24 10:11:13 +01:00
.defconfig arch: remove support for sh64 2016-09-08 22:15:15 +02:00
.flake8 .flake8: ignore utils/diffconfig 2018-03-13 22:37:54 +01:00
.gitignore update gitignore 2013-05-04 12:41:55 +02:00
.gitlab-ci.yml support/testing: add python-ubjson tests 2018-11-23 22:05:46 +01:00
.gitlab-ci.yml.in .gitlab-ci.yml: add trigger per type of job 2018-11-14 09:18:40 +01:00
CHANGES Update for 2018.11-rc1 2018-11-09 22:56:48 +01:00
Config.in core/download: drop the SSH command 2018-11-19 22:11:31 +01:00
Config.in.legacy boot/xloader: remove package 2018-10-26 16:59:05 +02:00
COPYING COPYING: add exception about patch licensing 2016-02-26 19:50:13 +01:00
DEVELOPERS package/fail2ban: new package 2018-11-25 09:32:06 +01:00
Makefile Makefile: define TARGET_DIR_WARNING_FILE relative to TARGET_DIR 2018-11-26 19:11:19 +01:00
Makefile.legacy Remove BR2_DEPRECATED 2016-10-15 23:14:45 +02:00
README README: add reference to submitting-patches 2016-02-01 19:16:08 +01:00

Buildroot is a simple, efficient and easy-to-use tool to generate embedded
Linux systems through cross-compilation.

The documentation can be found in docs/manual. You can generate a text
document with 'make manual-text' and read output/docs/manual/manual.text.
Online documentation can be found at http://buildroot.org/docs.html

To build and use the buildroot stuff, do the following:

1) run 'make menuconfig'
2) select the target architecture and the packages you wish to compile
3) run 'make'
4) wait while it compiles
5) find the kernel, bootloader, root filesystem, etc. in output/images

You do not need to be root to build or run buildroot.  Have fun!

Buildroot comes with a basic configuration for a number of boards. Run
'make list-defconfigs' to view the list of provided configurations.

Please feed suggestions, bug reports, insults, and bribes back to the
buildroot mailing list: buildroot@buildroot.org
You can also find us on #buildroot on Freenode IRC.

If you would like to contribute patches, please read
https://buildroot.org/manual.html#submitting-patches