Hi all,
I’m playing around with U-Boot EFI and GRUB EFI. If I’m starting Kernel 6.11 booted from U-Boot using:
#### Kernel 6.11
setenv kaddr 0x48000000
setenv dtaddr 0x50000000
setenv consoleargs "earlycon=uart8250,mmio32,0x11000000 console=ttyS0,115200n1 debug=7 loglevel=8 pci=pcie_bus_perf consoleblank=0"
setenv rootfs "root=/dev/nvme0n1p2 rootfstype=ext4 rootwait"
setenv bootargs ${consoleargs} ${rootfs} mtdparts=${mtdparts}
load nvme 0:2 ${kaddr} /boot/vmlinux-6.11.0-EasyOS-arm64
load nvme 0:2 ${dtaddr} /boot/dtb/mediatek/mt7988a-bananapi-bpi-r4-EasyOS.dtb
booti ${kaddr} - ${dtaddr}
The system is booting fine and using sudo reboot the system is rebooting without issues:
[ OK ] Stopped systemd-timesyncd.service - Network Time Synchronization.
[ OK ] Unmounted boot-efi.mount - /boot/efi.
[ OK ] Unmounted run-lock.mount - Legacy Locks Directory /run/lock.
[ OK ] Unmounted tmp.mount - Temporary Directory /tmp.
[ OK ] Stopped target swap.target - Swaps.
[ OK ] Reached target umount.target - Unmount All Filesystems.
[ OK ] Stopped systemd-fsck@dev-disk-by\x…eck on /dev/disk/by-uuid/6388-320E.
[ OK ] Removed slice system-systemd\x2dfs…slice - Slice /system/systemd-fsck.
[ OK ] Stopped target local-fs-pre.target…Preparation for Local File Systems.
[ OK ] Stopped systemd-remount-fs.service…mount Root and Kernel File Systems.
[ OK ] Stopped systemd-fsck-root.service - File System Check on Root Device.
[ OK ] Stopped systemd-tmpfiles-setup-dev…Create Static Device Nodes in /dev.
[ OK ] Stopped systemd-tmpfiles-setup-dev…ic Device Nodes in /dev gracefully.
[ OK ] Reached target shutdown.target - System Shutdown.
[ OK ] Reached target final.target - Late Shutdown Services.
[ OK ] Finished systemd-reboot.service - System Reboot.
[ OK ] Reached target reboot.target - System Reboot.
[ 624.105083] watchdog: watchdog0: watchdog did not stop!
[ 624.125856] systemd-shutdown[1]: Using hardware watchdog 'mtk-wdt', version 0, device /dev/watchdog0
[ 624.135067] systemd-shutdown[1]: Watchdog running with a hardware timeout of 10min.
[ 624.153771] systemd-shutdown[1]: Syncing filesystems and block devices.
[ 624.162383] systemd-shutdown[1]: Sending SIGTERM to remaining processes...
[ 624.178306] systemd-journald[1678]: Received SIGTERM from PID 1 (systemd-shutdow).
[ 624.199143] systemd-shutdown[1]: Sending SIGKILL to remaining processes...
[ 624.213929] systemd-shutdown[1]: Unmounting file systems.
[ 624.220824] (sd-umount)[3787]: Unmounting '/run/credentials/systemd-journald.service'.
[ 624.230085] (sd-remount)[3788]: Remounting '/' read-only with options 'errors=remount-ro'.
[ 624.294344] EXT4-fs (nvme0n1p2): re-mounted 05329a7f-410a-419b-840b-2fde100897cc ro. Quota mode: none.
[ 624.311973] systemd-shutdown[1]: All filesystems unmounted.
[ 624.317581] systemd-shutdown[1]: Deactivating swaps.
[ 624.322578] systemd-shutdown[1]: All swaps deactivated.
[ 624.327852] systemd-shutdown[1]: Detaching loop devices.
[ 624.337334] systemd-shutdown[1]: All loop devices detached.
[ 624.342904] systemd-shutdown[1]: Stopping MD devices.
[ 624.348215] systemd-shutdown[1]: All MD devices stopped.
[ 624.353527] systemd-shutdown[1]: Detaching DM devices.
[ 624.358805] systemd-shutdown[1]: All DM devices detached.
[ 624.364202] systemd-shutdown[1]: All filesystems, swaps, loop devices, MD devices and DM devices detached.
[ 624.373863] watchdog: watchdog0: watchdog did not stop!
[ 624.443853] systemd-shutdown[1]: Syncing filesystems and block devices.
[ 624.450587] systemd-shutdown[1]: Rebooting.
[ 624.645343] reboot: Restarting system
F0: 102B 0000
FA: 1042 0000
FA: 1042 0000 [0200]
F9: 0000 0000
V0: 0000 0000 [0001]
00: 0000 0000
BP: 0600 0041 [0000]
G0: 1190 0000
EC: 0000 0000 [1000]
MK: 0000 0000 [0000]
T0: 0000 01A0 [0101]
Jump to BL
NOTICE: BL2: v2.12.0(release):v2.4-rc0-8168-ge09077068
NOTICE: BL2: Built : 13:45:15, Jun 25 2025
NOTICE: WDT: [40000000] Software reset (reboot)
NOTICE: CPU: MT7988
NOTICE: EMI: Using DDR unknown settings
NOTICE: EMI: Detected DRAM size: 4096 MB
NOTICE: EMI: complex R/W mem test passed
NOTICE: LVTS: Enable thermal HW reset
NOTICE: SPI_NAND parses attributes from parameter page.
NOTICE: SPI_NAND Detected ID 0xef
NOTICE: Page size 2048, Block size 131072, size 134217728
NOTICE: BL2: Booting BL31
NOTICE: BL31: v2.12.0(release):v2.4-rc0-8168-ge09077068
NOTICE: BL31: Built : 13:45:15, Jun 25 2025
U-Boot 2025.07-rc5-EasyOS-00012-g7027b445cc0b-dirty (Jul 03 2025 - 14:09:09 +0200)
CPU: MediaTek MT7988
Model: mt7988-rfb
DRAM: 4 GiB
Core: 72 devices, 25 uclasses, devicetree: separate
Flash: spi-nand: spi_nand spi_nand@0: Winbond SPI NAND was found.
spi-nand: spi_nand spi_nand@0: 128 MiB, block size: 128 KiB, page size: 2048, OOB size: 64
0 Bytes
MMC: mmc@11230000: 0
Loading Environment from UBI... jedec_spi_nor spi_nor@0: unrecognized JEDEC id bytes: ff, ff, ff
ubi0: attaching mtd3
ubi0: scanning is finished
ubi0: attached mtd3 (name "ubi", size 114 MiB)
ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
ubi0: good PEBs: 916, bad PEBs: 0, corrupted PEBs: 0
ubi0: user volume: 4, internal volumes: 1, max. volumes count: 128
ubi0: max/mean erase counter: 2/1, WL threshold: 4096, image sequence number: 0
ubi0: available PEBs: 822, total reserved PEBs: 94, PEBs reserved for bad PEB handling: 20
Read 65536 bytes from volume ubootenv to 00000000ff7db640
Read 65536 bytes from volume ubootenvbkp to 00000000ff7eb680
Then if I’m trying to boot via U-Boot EFI → GRUB EFI → Linux Kernel 6.11:
load nvme 0:2 ${dtaddr} /boot/dtb/mediatek/mt7988a-bananapi-bpi-r4-EasyOS.dtb
fdt addr ${dtaddr}
bootefi bootmgr ${dtaddr}
Is loading GRUB EFI then I’m booting Linux 6.11 Kernel.
Then if I’m trying to reboot the system using sudo reboot the system is reaching systemd-shutdown but the device doesn’t reboot:
[ OK ] Stopped systemd-timesyncd.service - Network Time Synchronization.
[ OK ] Unmounted boot-efi.mount - /boot/efi.
[ OK ] Unmounted run-lock.mount - Legacy Locks Directory /run/lock.
[ OK ] Unmounted tmp.mount - Temporary Directory /tmp.
[ OK ] Stopped target swap.target - Swaps.
[ OK ] Reached target umount.target - Unmount All Filesystems.
[ OK ] Stopped systemd-fsck@dev-disk-by\x…eck on /dev/disk/by-uuid/6388-320E.
[ OK ] Removed slice system-systemd\x2dfs…slice - Slice /system/systemd-fsck.
[ OK ] Stopped target local-fs-pre.target…Preparation for Local File Systems.
[ OK ] Stopped systemd-remount-fs.service…mount Root and Kernel File Systems.
[ OK ] Stopped systemd-fsck-root.service - File System Check on Root Device.
[ OK ] Stopped systemd-tmpfiles-setup-dev…Create Static Device Nodes in /dev.
[ OK ] Stopped systemd-tmpfiles-setup-dev…ic Device Nodes in /dev gracefully.
[ OK ] Reached target shutdown.target - System Shutdown.
[ OK ] Reached target final.target - Late Shutdown Services.
[ OK ] Finished systemd-reboot.service - System Reboot.
[ OK ] Reached target reboot.target - System Reboot.
[ 33.867088] watchdog: watchdog0: watchdog did not stop!
[ 33.887520] systemd-shutdown[1]: Using hardware watchdog 'mtk-wdt', version 0, device /dev/watchdog0
[ 33.896722] systemd-shutdown[1]: Watchdog running with a hardware timeout of 10min.
[ 33.916072] systemd-shutdown[1]: Syncing filesystems and block devices.
[ 33.924643] systemd-shutdown[1]: Sending SIGTERM to remaining processes...
[ 33.940922] systemd-journald[1739]: Received SIGTERM from PID 1 (systemd-shutdow).
[ 33.956174] systemd-shutdown[1]: Sending SIGKILL to remaining processes...
[ 33.971273] systemd-shutdown[1]: Unmounting file systems.
[ 33.978099] (sd-umount)[2122]: Unmounting '/run/credentials/systemd-journald.service'.
[ 33.987323] (sd-remount)[2123]: Remounting '/' read-only with options 'errors=remount-ro'.
[ 34.104453] EXT4-fs (nvme0n1p2): re-mounted 05329a7f-410a-419b-840b-2fde100897cc ro. Quota mode: none.
[ 34.120888] systemd-shutdown[1]: All filesystems unmounted.
[ 34.126497] systemd-shutdown[1]: Deactivating swaps.
[ 34.131503] systemd-shutdown[1]: All swaps deactivated.
[ 34.136748] systemd-shutdown[1]: Detaching loop devices.
[ 34.146157] systemd-shutdown[1]: All loop devices detached.
[ 34.151768] systemd-shutdown[1]: Stopping MD devices.
[ 34.157004] systemd-shutdown[1]: All MD devices stopped.
[ 34.162313] systemd-shutdown[1]: Detaching DM devices.
[ 34.167648] systemd-shutdown[1]: All DM devices detached.
[ 34.173047] systemd-shutdown[1]: All filesystems, swaps, loop devices, MD devices and DM devices detached.
[ 34.182772] watchdog: watchdog0: watchdog did not stop!
[ 34.307202] systemd-shutdown[1]: Syncing filesystems and block devices.
[ 34.313933] systemd-shutdown[1]: Rebooting.
[ 34.487267] reboot: Restarting system
Am I missing something or U-Boot EFI / GRUB EFI is missing something and doesn’t trigger the board reboot?
//LE: I’ve recompiled U-Boot with EFI selftest and after running bootefi selftest the last line is:
Executing 'watchdog timer'
Executing 'watchdog timer' succeeded
Tearing down 'watchdog timer'
Tearing down 'watchdog timer' succeeded
Setting up 'crc32'
Setting up 'crc32' succeeded
Setting up 'ExitBootServices'
Setting up 'ExitBootServices' succeeded
Setting up 'variables at runtime'
Setting up 'variables at runtime' succeeded
Setting up 'virtual address map'
Setting up 'virtual address map' succeeded
Boot services terminated
Executing 'crc32'
Executing 'crc32' succeeded
Executing 'ExitBootServices'
Boot services terminated
Executing 'ExitBootServices' succeeded
Executing 'variables at runtime'
Executing 'variables at runtime' succeeded
Executing 'virtual address map'
Executing 'virtual address map' succeeded
Summary: 0 failures
Preparing for reset. Press any key...
And nothing happens.
: