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authorGravatar Erico Nunes <nunes.erico@gmail.com>2018-09-27 00:37:17 +0200
committerGravatar Thomas Petazzoni <thomas.petazzoni@bootlin.com>2018-11-26 21:08:13 +0100
commit273a27804a18c5e232907d5ef6bd01957cf090d7 (patch)
tree28b1399bbfa58e2a826e5c4a598f4d4a0164b284 /configs
parent2d9566b7b7a6d34a37e88426e483e8ceb8568c8d (diff)
downloadbuildroot-273a27804a18c5e232907d5ef6bd01957cf090d7.tar.gz
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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>
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