ReadMe.md

The UEFI loader is causing a CPU panic both on hardware and in QEMU.

In order to test, you'll need a disk/disk image formatted with GPT, and a partition with the BFS type code and an x86_64 image built from [].

A quick summary of the fault is described in https://github.com/jessicah/haiku/commit/ca5c952aca13749b962d72445e725070cb67dfe7.

Quick and dirty steps to build on Haiku:

  mkdir -p generated/image
  mkdir -p generated/loader
  cd generated/image
  ../../configure --build-cross-tools x86_64 ../../../buildtools --use-gcc-pipe -j4
  jam -q -j4 @nightly-raw
  cd ../loader
  ../../configure --build-cross-tools x86_64 ../../../buildtools --boot-platform=efi --use-gcc-pipe -j4
  jam -q -j4 haiku_loader.efi

You can optimise by not building the cross-tools twice :p

Testing with QEMU will look similar to:

  qemu-system-x86_64 -smp cpus=2 -boot order=c -m 512 \
    -hda fat:loader/objects/haiku/x86_64/common/system/boot \
    -hdb harddisk.img -net none -bios OVMF.fd -no-reboot -serial stdio

You can create a copy-on-write disk image with:

  qemu-img create -f qcow2 -o backing_file=/dev/disk/scsi/0/0/0/raw harddisk.img

See https://github.com/jessicah/haiku/blob/efi.merge/src/system/boot/platform/efi/devices.cpp#L656-L679 for code you can change to hardcode UUID of the boot partition, and whether to call add_block_devices() or not.

failure.txt

CPU at 3.193 GHz
factors: 1344872 3193588122
Welcome to the Haiku boot loader!
ENTER: platform_add_boot_device
loaded image options length = 44 bytes
loaded image options data = 'fs0:\haiku_loader.efi0'
don't have a UUID, hard-coding one

Processing device path 0...
  Adding a new ATAPI device...
    address = 0x000000001c004338
    added to device node list
guid: 00000000-0000-0000-0000000000000000
  uuid = 00000000000000000000000000000000

Processing device path 1...
  Adding a new ATAPI device...
    address = 0x000000001c0045a8
    added to device node list
guid: 19650dd6-b079-42db-a84e67cae73d81be
  uuid = d60d651979b0db42a84e67cae73d81be

Processing device path 2...
  Adding a new ATAPI device...
    address = 0x000000001c004818
    added to device node list

Processing device path 3...
  The current ATAPI device = 0x000000001c004338
  Adding a new partition...
    address = 0x000000001c005088
  uuid = fafd1abe000000000000000000000000
  uuid = 8576347899e0d64bb9482ec5b9df8025

Processing device path 4...
  The current ATAPI device = 0x000000001c0045a8
  Adding a new partition...
    address = 0x000000001c005148
  uuid = ed812ea3ca0de54990c4b2d1b5d5a769
  uuid = 8576347899e0d64bb9482ec5b9df8025

Processing device path 5...
  The current ATAPI device = 0x000000001c0045a8
  Adding a new partition...
    address = 0x000000001c005208
  uuid = 33a77d99ba640d4bbb2adf22c63974d7
  uuid = 8576347899e0d64bb9482ec5b9df8025

Processing device path 6...
  The current ATAPI device = 0x000000001c0045a8
  Adding a new partition...
    address = 0x000000001c0052c8
  uuid = 30ba4016e7937c4ab7215adfb5317685
  uuid = 8576347899e0d64bb9482ec5b9df8025

Processing device path 7...
  The current ATAPI device = 0x000000001c0045a8
  Adding a new partition...
    address = 0x000000001c005388
  uuid = 8576347899e0d64bb9482ec5b9df8025
  uuid = 8576347899e0d64bb9482ec5b9df8025
    boot partition offset = 957241344

Processing device path 8...
  The current ATAPI device = 0x000000001c0045a8
  Adding a new partition...
    address = 0x000000001c005448
  uuid = bc4f4d29803d3043801647e6670f6a5e
  uuid = 8576347899e0d64bb9482ec5b9df8025

Processing device path 9...

Processing device path 10...
Finished processing devices & partitions
EXIT: platform_add_boot_device: shouldn't know which volume to boot from...
add_partitions_for(0x000000001c0045a8, mountFS = no)
!!!! X64 Exception Type - 06(#UD - Invalid Opcode)  CPU Apic ID - 00000000 !!!!
RIP  - 000000000009F001, CS  - 0000000000000028, RFLAGS - 0000000000000206
RAX  - 0000000000000010, RCX - 00000000000003F8, RDX - 0000000000000000
RBX  - 0000000000000003, RSP - 000000001FF5C5A8, RBP - 000000001FF5C5E0
RSI  - 000000001FF5C5B8, RDI - 000000001C0045A8
R8   - 0000000000000003, R9  - 0000000000000000, R10 - 00000000FFFFFFFF
R11  - 0000000000000008, R12 - 000000001C0045A8, R13 - 0000000000000001
R14  - 000000001E0600A0, R15 - 0000000000000000
DS   - 0000000000000008, ES  - 0000000000000008, FS  - 0000000000000008
GS   - 0000000000000008, SS  - 0000000000000008
CR0  - 0000000080000033, CR2 - 0000000000000000, CR3 - 000000001FEFB000
CR4  - 0000000000000668, CR8 - 0000000000000000
DR0  - 0000000000000000, DR1 - 0000000000000000, DR2 - 0000000000000000
DR3  - 0000000000000000, DR6 - 00000000FFFF0FF0, DR7 - 0000000000000400
GDTR - 000000001FEDFF18 000000000000003F, LDTR - 0000000000000000
IDTR - 000000001F81A018 0000000000000FFF,   TR - 0000000000000000
FXSAVE_STATE - 000000001FF5C200
!!!! Can't find image information. !!!!

success.txt

CPU at 3.193 GHz
factors: 1344788 3193785413
Welcome to the Haiku boot loader!
ENTER: platform_add_boot_device
loaded image options length = 44 bytes
loaded image options data = 'fs0:\haiku_loader.efi0'
don't have a UUID, hard-coding one
EXIT: platform_add_boot_device: not adding block devices
        no boot path found, scan for all partitions...

ENTER: platform_add_block_devices

Processing device path 0...

Processing device path 1...

Processing device path 2...

Processing device path 3...
  Adding a new partition...
    address = 0x000000001c004338
  uuid = fafd1abe000000000000000000000000
  uuid = 8576347899e0d64bb9482ec5b9df8025
    added to partition node list

Processing device path 4...
  Adding a new partition...
    address = 0x000000001c0043f8
  uuid = ed812ea3ca0de54990c4b2d1b5d5a769
  uuid = 8576347899e0d64bb9482ec5b9df8025
    added to partition node list

Processing device path 5...
  Adding a new partition...
    address = 0x000000001c0044b8
  uuid = 33a77d99ba640d4bbb2adf22c63974d7
  uuid = 8576347899e0d64bb9482ec5b9df8025
    added to partition node list

Processing device path 6...
  Adding a new partition...
    address = 0x000000001c004578
  uuid = 30ba4016e7937c4ab7215adfb5317685
  uuid = 8576347899e0d64bb9482ec5b9df8025
    added to partition node list

Processing device path 7...
  Adding a new partition...
    address = 0x000000001c004638
  uuid = 8576347899e0d64bb9482ec5b9df8025
  uuid = 8576347899e0d64bb9482ec5b9df8025
    added to partition node list

Processing device path 8...
  Adding a new partition...
    address = 0x000000001c0046f8
  uuid = bc4f4d29803d3043801647e6670f6a5e
  uuid = 8576347899e0d64bb9482ec5b9df8025
    added to partition node list

Processing device path 9...

Processing device path 10...
Finished processing devices & partitions
EXIT: platform_add_block_devices
add_partitions_for(0x000000001c004338, mountFS = yes)
add_partitions_for(fd = 0, mountFS = yes)
0x000000001c0047e0 Partition::Partition
0x000000001c0047e0 Partition::Scan()
check for partitioning_system: GUID Partition Map
check for partitioning_system: Intel Partition Map
  priority: 500
check for partitioning_system: Intel Extended Partition
0x000000001c0047e0 Partition::~Partition
add_partitions_for(0x000000001c0043f8, mountFS = yes)
add_partitions_for(fd = 0, mountFS = yes)
0x000000001c0047e0 Partition::Partition
0x000000001c0047e0 Partition::Scan()
check for partitioning_system: GUID Partition Map
check for partitioning_system: Intel Partition Map
  priority: 500
check for partitioning_system: Intel Extended Partition
0x000000001c0047e0 Partition::_Mount check for file_system: BFS Filesystem
0x000000001c0047e0 Partition::_Mount check for file_system: FAT32 Filesystem
add_partitions_for(0x000000001c0044b8, mountFS = yes)
add_partitions_for(fd = 2, mountFS = yes)
0x000000001c005138 Partition::Partition
0x000000001c005138 Partition::Scan()
check for partitioning_system: GUID Partition Map
check for partitioning_system: Intel Partition Map
check for partitioning_system: Intel Extended Partition
0x000000001c005138 Partition::_Mount check for file_system: BFS Filesystem
0x000000001c005138 Partition::_Mount check for file_system: FAT32 Filesystem
0x000000001c005138 Partition::_Mount check for file_system: TAR Filesystem
0x000000001c005138 Partition::~Partition
add_partitions_for(0x000000001c004578, mountFS = yes)
add_partitions_for(fd = 2, mountFS = yes)
0x000000001c005138 Partition::Partition
0x000000001c005138 Partition::Scan()
check for partitioning_system: GUID Partition Map
check for partitioning_system: Intel Partition Map
check for partitioning_system: Intel Extended Partition
0x000000001c005138 Partition::_Mount check for file_system: BFS Filesystem
add_partitions_for(0x000000001c004638, mountFS = yes)
add_partitions_for(fd = 4, mountFS = yes)
0x000000001c005768 Partition::Partition
0x000000001c005768 Partition::Scan()
check for partitioning_system: GUID Partition Map
check for partitioning_system: Intel Partition Map
check for partitioning_system: Intel Extended Partition
0x000000001c005768 Partition::_Mount check for file_system: BFS Filesystem
add_partitions_for(0x000000001c0046f8, mountFS = yes)
add_partitions_for(fd = 6, mountFS = yes)
0x000000001c005d98 Partition::Partition
0x000000001c005d98 Partition::Scan()
check for partitioning_system: GUID Partition Map
check for partitioning_system: Intel Partition Map
check for partitioning_system: Intel Extended Partition
0x000000001c005d98 Partition::_Mount check for file_system: BFS Filesystem
PackageVolumeInfo::SetTo()
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PackageVolumeInfo::SetTo()
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PackageVolumeInfo::SetTo()
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PackageVolumeInfo::SetTo()
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