Hi,
I am playing with booting from USB via EFI. And I see very weird behavior. I have burnt image with grub to USB flashdisk and I have tested it on 3 zynqmp boards. zcu102, zcu104 and SOM Kria board. On zcu102 grub is going to boot menu and everything is working fine as expected. On zcu104 and SOM Kria I am able to get grub not to menu. When I list partitions in grub I see that only SDs are listed: grub> ls (hd0) (hd0,msdos1) (hd1) (hd1,msdos1)
On zcu102(working board) I also see usb(gpt) partitions and SD. grub> ls (hd0) (hd0,gpt2) (hd0,gpt1) (hd1) (hd1,msdos1)
On zcu104 I see one more error message "PE image measurement failed" But I can't see it on SOM.
U-Boot image is just the same for all boards. I am using generic xilinx_zynqmp_virt_defconfig.
When I compare DT description for USB between zcu102 and zcu104 they are the same. SOM doesn't have usb enabled by default (but I enabled it) but grub starts which means that communication with USB is fine.
It is based on my latest patches available here. u-boot/custodians/u-boot-microblaze.git (usb-efi-issue branch)
Also when I list usb I see all partitions just fine. ZynqMP> part list usb 0
Partition Map for USB device 0 -- Partition Type: EFI
Part Start LBA End LBA Name Attributes Type GUID Partition GUID 1 0x00000800 0x001007fe "Microsoft basic data" attrs: 0x0000000000000000 type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7 type: data guid: 0e7f8b3d-296b-4720-be9d-c4687d3c4a77 2 0x00100800 0x001197fe "Microsoft basic data" attrs: 0x0000000000000000 type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7 type: data guid: 8892eddc-231a-4e6e-a5e1-c310f4482fb7
Do you have any idea why on one system is working fine to get to menu and on others there is an issue to get all partitions even u-boot is able to see them and can work with them.
Thanks, Michal