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riscv64: Ubuntu doesn't boot with EDK2, although it boots with u-boot
Description of problem:
Ubuntu doesn't boot with `edk2-riscv-code.fd`:
```bash
wget https://cloud-images.ubuntu.com/noble/20240822/noble-server-cloudimg-riscv64.img
qemu-system-riscv64 -M virt -m 2048 -nographic -hda noble-server-cloudimg-riscv64.img \
-drive if=pflash,format=raw,readonly=on,file=/usr/local/share/qemu/edk2-riscv-code.fd
```
```
Loading Linux 6.8.0-41-generic ...
Loading initial ramdisk ...
InstallProtocolInterface: 4006C0C1-FCB3-403E-996D-4A6C8724E06D FDB3F3C8
InstallProtocolInterface: 09576E91-6D3F-11D2-8E39-00A0C969723B FDB3F380
[Security] 3rd party image[0] can be loaded after EndOfDxe: MemoryMapped(0x2,0xF9CC4000,0xFC194000).
InstallProtocolInterface: 5B1B31A1-9562-11D2-8E3F-00A0C969723B FF29C2C0
Loading driver at 0x000F732C000 EntryPoint=0x000F817FEA6
InstallProtocolInterface: BC62157E-3E33-4FEC-9920-2D3B36D750DF FF29CC18
ProtectUefiImageCommon - 0xFF29C2C0
- 0x00000000F732C000 - 0x0000000002598000
SetUefiImageMemoryAttributes - 0x00000000F732C000 - 0x0000000000001000 (0x0000000000004000)
SetUefiImageMemoryAttributes - 0x00000000F732D000 - 0x0000000000FFF000 (0x0000000000020000)
SetUefiImageMemoryAttributes - 0x00000000F832C000 - 0x0000000001598000 (0x0000000000004000)
TimerDriverSetTimerPeriod(0x0)
SetUefiImageMemoryAttributes - 0x00000000FFEC7000 - 0x000000000000C000 (0x0000000000000000)
SetUefiImageMemoryAttributes - 0x00000000FFEBC000 - 0x000000000000B000 (0x0000000000000000)
SetUefiImageMemoryAttributes - 0x00000000FFEAC000 - 0x0000000000010000 (0x0000000000000000)
SetUefiImageMemoryAttributes - 0x00000000FFEA1000 - 0x000000000000B000 (0x0000000000000000)
SetUefiImageMemoryAttributes - 0x00000000FFE84000 - 0x000000000001D000 (0x0000000000000000)
SetUefiImageMemoryAttributes - 0x00000000FFE79000 - 0x000000000000B000 (0x0000000000000000)
SetUefiImageMemoryAttributes - 0x00000000FFE6E000 - 0x000000000000B000 (0x0000000000000000)
SetUefiImageMemoryAttributes - 0x00000000FFE63000 - 0x000000000000B000 (0x0000000000000000)
SetUefiImageMemoryAttributes - 0x00000000FFE59000 - 0x000000000000A000 (0x0000000000000000)
(hangs here)
```
The same disk image still boots when `uboot.elf` is specified as the kernel image:
```bash
wget https://github.com/lima-vm/u-boot-qemu-mirror/releases/download/2023.07%2Bdfsg-1/qemu-riscv64_smode_uboot.elf
qemu-system-riscv64 -M virt -m 2048 -nographic -hda noble-server-cloudimg-riscv64.img \
-kernel qemu-riscv64_smode_uboot.elf
```
```
Loading Linux 6.8.0-41-generic ...
Loading initial ramdisk ...
syscon-poweroff poweroff: pm_power_off already claimed for sbi_srst_power_off
-.mount
etc-machine\x2did.mount
systemd-journald.service
dev-hugepages.mount
...
Ubuntu 24.04 LTS ubuntu ttyS0
ubuntu login:
```
Steps to reproduce:
See above
Additional information:
|