Am 03.02.2016 um 12:36 schrieb Leif Lindholm leif.lindholm@linaro.org:
On Tue, Feb 02, 2016 at 03:45:12AM +0100, Alexander Graf wrote: UEFI defines a simple boot protocol for removable media. There we should look at the EFI (first GPT FAT) partition and search for /efi/boot/bootXXX.efi with XXX being different between different platforms (x86, x64, arm, aa64, ...).
This patch implements a simple version of that protocol for the default distro boot script. With this we can automatically boot from valid UEFI enabled removable media.
Because from all I could see U-Boot by default doesn't deliver device tree blobs with its firmware, we also need to load the dtb from somewhere. Traverse the same EFI partition for an fdt file that fits our current board so that an OS receives a valid device tree when booted automatically.
Signed-off-by: Alexander Graf agraf@suse.de Reviewed-by: Simon Glass sjg@chromium.org
include/config_distro_bootcmd.h | 47 ++++++++++++++++++++++++++++++++++++++++- 1 file changed, 46 insertions(+), 1 deletion(-)
diff --git a/include/config_distro_bootcmd.h b/include/config_distro_bootcmd.h index 37c6b43..c19f1b0 100644 --- a/include/config_distro_bootcmd.h +++ b/include/config_distro_bootcmd.h @@ -90,6 +90,48 @@ BOOT_TARGET_DEVICES_references_UBIFS_without_CONFIG_CMD_UBIFS #endif
+#ifdef CONFIG_EFI_LOADER +#if defined(CONFIG_ARM64) +#define BOOTEFI_NAME "bootaa64.efi" +#elif defined(CONFIG_ARM) +#define BOOTEFI_NAME "bootarm.efi" +#endif +#endif
Actually, since Simon is testing this series also on Minnowboard (at least MAX), maybe add bootx64.efi and/or bootia32.efi as well?
We need more to support a new architecture - relocations for pe and u-boot for example. So adding the bootia32.efi bits in an x86 enable patch set makes the most sense imho.
I presume U-Boot for ia64 is not a thing? ;)
s/U-Boot for // :). Don't ride dead horses.
Alex