Hi Thierry, On Tue, Jul 31, 2018 at 6:18 PM, Thierry Gayet <thierry.ga...@klaxoon.com> wrote: > Hi, > > I am working with a board called "up board" ( > http://www.aaeon.com/en/p/up-board-computer-board-for-professional-makers) > from aaeon. > > This card is as tiny as a credit card or a raspberry pi running with a > x86_64 processor. > > It buildin an UEFI BIOS and a MMC memory (no sdcard, no ssd, no sata, no > rom). > > I know this is not really adapt to an embedded usage but i would like to > let my u-boot bootloader loading my gnu/linux kernel (using the bootefi > command) then my linux rootfs (generated by yocto) : > > (UEFI / BIOS) -> (uboot uefi) -> (GNU/Linux kernel) --> (linux rootfs) > > I do not want to use grub or grub uefi if possible. > > My idea is to make a uefi partition on the eMMC memory. > > I am looking for an uboot configuration i can use to compile my bootloader. > > I have make tests with the u-boot-app.efi that i have compiled and set into > an efi paritiion ; i am booting into an usb key first. This is not working > and always stop at the uefi shell... > > Maybe my u-boot-app.efi need to be signed ?
No. Since you mentioned the x86 processor is 64-bit, it's hightly possible that you have a 64-bit EFI BIOS. That means you cannot use u-boot-app.efi with this EFI BIOS since u-boot-app.efi is 32-bit. > > Is there a documentation that describe all steps required ? > > Any help welcome in order to solve my use case. Thanks in advance. > You will need try efi-x86_payload64, and boot from there. Note currently there are issues to boot Linux kernel from the U-Boot payload. Regards, Bin _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
