I think that UEFI would involve the bootloader that the BIOS starts.  I don't know if the bootstrap part of UEFI would be handled by seL4 itself or by something like grub/grub2.

My wild-ass guess is that anything after seL4 takes over would be handled by a driver process that has the required capabilities to interface with the corresponding hardware.

On Fri, Sep 29, 2017 at 9:07 AM, Edward Sandberg <ed.sandberg@adventiumlabs.com> wrote:
Hello,

I built Genode 17.08 with run option "image/uefi" and platform option
"sel4_x86_32". I have tried booting the resulting image on a variety of
machines but am not getting the behavior I expect.  The machines I have
tried are:

* Up board (a Windows compatible Atom-based system)
* Dell M3800 laptop
* Dell Latitude 7280 laptop
* HP ProLiant DL380 Gen9 Server
* Dell Optoplex 990
* Asus P9X79 WS Motherboard with Intel Core i7-3930K

The furthest I have gotten was on the UP board, which only supports UEFI
boot:

https://www.intel.com/content/www/us/en/support/emerging-technologies/intel-realsense-technology/000022699.html

I saw serial output but no graphical output (see below).  The other
machines I tried to boot on didn't even give me serial output.  The
serial output seems to indicate that an attempt to create a framebuffer
failed.

Is this the correct build procedure?
What hardware have you used to test UEFI boot?
Does the trace below suggest any experiments to try?

*****************************************************************

WARNING: no console will be available to OS
Bender: Hello World.

Boot config: parsing cmdline ''
Boot config: console_port = 0x3f8
Boot config: debug_port = 0x3f8
Boot config: disable_iommu = false

Boot config: parsing cmdline 'sel4 disable_iommu'
Boot config: console_port = 0x3f8
Boot config: debug_port = 0x3f8
Boot config: disable_iommu = true
  module #0: start=0xeaba000 end=0xf0ff968 size=0x645968 name='image.elf'
        Physical Memory Region from 0 size 8f000 type 1
        Physical Memory Region from 8f000 size 1000 type 4
        Physical Memory Region from 90000 size e000 type 1
        Physical Memory Region from 9e000 size 2000 type 2
        Physical Memory Region from 100000 size 1ef00000 type 1
Adding physical memory region 0x100000-0x1f000000
        Physical Memory Region from 1f000000 size 1200000 type 2
        Physical Memory Region from 20200000 size 3af29000 type 1
        Physical Memory Region from 5b129000 size 30000 type 2
        Physical Memory Region from 5b159000 size 25000 type 3
        Physical Memory Region from 5b17e000 size 5d2000 type 4
        Physical Memory Region from 5b750000 size 2b9000 type 2
        Physical Memory Region from 5ba09000 size 79000 type 20
        Physical Memory Region from 5ba82000 size 57e000 type 1
        Physical Memory Region from e0000000 size 4000000 type 2
        Physical Memory Region from fea00000 size 100000 type 2
        Physical Memory Region from fec00000 size 1000 type 2
        Physical Memory Region from fed01000 size 1000 type 2
        Physical Memory Region from fed03000 size 1000 type 2
        Physical Memory Region from fed06000 size 1000 type 2
        Physical Memory Region from fed08000 size 2000 type 2
        Physical Memory Region from fed1c000 size 1000 type 2
        Physical Memory Region from fed80000 size 40000 type 2
        Physical Memory Region from fee00000 size 1000 type 2
        Physical Memory Region from ffc00000 size 400000 type 2
Kernel loaded to: start=0x200000 end=0x281000 size=0x81000 entry=0x20007e
ACPI: RSDP paddr=0x3c490
ACPI: RSDP vaddr=0xdfc3c490
ACPI: RSDT paddr=0x5b161028
ACPI: RSDT vaddr=0xdfd61028
ACPI: FADT paddr=0x5b1611a8
ACPI: FADT vaddr=0xdfd611a8
ACPI: FADT flags=0x421
ACPI: MADT paddr=0x5b177380
ACPI: MADT vaddr=0xdfd77380
ACPI: MADT apic_addr=0xfee00000
ACPI: MADT flags=0x1
ACPI: MADT_APIC apic_id=0x0
ACPI: MADT_APIC apic_id=0x2
ACPI: MADT_APIC apic_id=0x4
ACPI: MADT_APIC apic_id=0x6
ACPI: MADT_IOAPIC ioapic_id=1 ioapic_addr=0xfec00000 gsib=0
ACPI: MADT_ISO bus=0 source=0 gsi=2 flags=0x0
ACPI: MADT_ISO bus=0 source=9 gsi=9 flags=0xd
ACPI: 4 CPU(s) detected
Detected 1 boot module(s):
ELF-loading userland images from boot modules:
size=0xd87000 v_entry=0x2000000 v_start=0x2000000 v_end=0x2d87000
p_start=0xf100000 p_end=0xfe87000
Moving loaded userland images to final location: from=0xf100000
to=0x281000 size=0xd87000
Starting node #0 with APIC ID 0

Starting node #1 with APIC ID 2
Starting node #2 with APIC ID 4
Starting node #3 with APIC ID 6
Booting all finished, dropped to user space
virtual address layout of core:
 overall    [00002000,c0000000)
 core image [02000000,02d87000)
 ipc buffer [02d87000,02d88000)
 boot_info  [02d88000,02d8a000)
 stack area [40000000,50000000)
Warning: need physical memory, but Platform object not constructed yet
Warning: need physical memory, but Platform object not constructed yet
Warning: need physical memory, but Platform object not constructed yet
Warning: need physical memory, but Platform object not constructed yet
:phys_alloc:       Allocator 0x2800df8 dump:
 Block: [00200000,00201000) size=4K avail=0 max_avail=0
 Block: [00201000,00202000) size=4K avail=0 max_avail=0
 Block: [00202000,00203000) size=4K avail=0 max_avail=0
 Block: [00203000,00204000) size=4K avail=0 max_avail=0
 Block: [00204000,00205000) size=4K avail=0 max_avail=0
 Block: [00205000,00206000) size=4K avail=0 max_avail=0
 Block: [00206000,00207000) size=4K avail=0 max_avail=0
 Block: [00207000,00208000) size=4K avail=0 max_avail=0
 Block: [00208000,00209000) size=4K avail=0 max_avail=0
 Block: [00209000,0020a000) size=4K avail=0 max_avail=0
 Block: [0020a000,0020b000) size=4K avail=0 max_avail=0
 Block: [0020b000,0020c000) size=4K avail=0 max_avail=0
 Block: [0020c000,0020d000) size=4K avail=0 max_avail=0
 Block: [01008000,01009000) size=4K avail=0 max_avail=0
 Block: [01009000,0100a000) size=4K avail=0 max_avail=0
 Block: [0100a000,0100b000) size=4K avail=0 max_avail=0
 Block: [0100b000,0100c000) size=4K avail=0 max_avail=0
 Block: [0100c000,0100d000) size=4K avail=0 max_avail=0
 Block: [0100d000,0100e000) size=4K avail=0 max_avail=0
 Block: [0100e000,0100f000) size=4K avail=0 max_avail=0
 Block: [0100f000,01010000) size=4K avail=0 max_avail=0
 Block: [01010000,01011000) size=4K avail=0 max_avail=0
 Block: [01011000,01012000) size=4K avail=0 max_avail=0
 Block: [01012000,01013000) size=4K avail=0 max_avail=0
 Block: [01013000,01014000) size=4K avail=0 max_avail=0
 Block: [01014000,01015000) size=4K avail=0 max_avail=0
 Block: [01015000,01016000) size=4K avail=0 max_avail=0
 Block: [01016000,01017000) size=4K avail=0 max_avail=0
 Block: [01017000,01018000) size=4K avail=0 max_avail=0
 Block: [01018000,01019000) size=4K avail=0 max_avail=0
 Block: [01019000,0101a000) size=4K avail=0 max_avail=0
 Block: [0101a000,0101b000) size=4K avail=0 max_avail=0
 Block: [0101b000,0101c000) size=4K avail=0 max_avail=0
 Block: [0101c000,0101d000) size=4K avail=0 max_avail=0
 Block: [0101d000,0101e000) size=4K avail=0 max_avail=0
 Block: [0101e000,0101f000) size=4K avail=0 max_avail=0
 Block: [0101f000,01020000) size=4K avail=0 max_avail=0
 Block: [01020000,01021000) size=4K avail=0 max_avail=0
 Block: [01021000,01022000) size=4K avail=0 max_avail=0
 Block: [01022000,01023000) size=4K avail=0 max_avail=0
 Block: [01023000,01024000) size=4K avail=0 max_avail=0
 Block: [01024000,01025000) size=4K avail=0 max_avail=0
 Block: [01025000,01026000) size=4K avail=0 max_avail=0
 Block: [01026000,01027000) size=4K avail=0 max_avail=0
 Block: [01027000,01028000) size=4K avail=0 max_avail=0
 Block: [01028000,01029000) size=4K avail=0 max_avail=0
 Block: [01029000,0102a000) size=4K avail=0 max_avail=0
 Block: [0102a000,0102b000) size=4K avail=0 max_avail=0
 Block: [0102b000,0102c000) size=4K avail=0 max_avail=0
 Block: [0102c000,0102d000) size=4K avail=0 max_avail=400M
 Block: [0102d000,0102e000) size=4K avail=0 max_avail=0
 Block: [0102e000,0102f000) size=4K avail=0 max_avail=0
 Block: [0102f000,01030000) size=4K avail=0 max_avail=0
 Block: [01030000,01031000) size=4K avail=0 max_avail=0
 Block: [01031000,01032000) size=4K avail=0 max_avail=0
 Block: [01032000,01033000) size=4K avail=0 max_avail=0
 Block: [01033000,01034000) size=4K avail=0 max_avail=0
 Block: [01034000,01035000) size=4K avail=0 max_avail=0
 Block: [01035000,01036000) size=4K avail=0 max_avail=0
 Block: [01036000,01037000) size=4K avail=0 max_avail=0
 Block: [01037000,01038000) size=4K avail=0 max_avail=0
 Block: [01038000,01039000) size=4K avail=0 max_avail=0
 Block: [01039000,0103a000) size=4K avail=0 max_avail=0
 Block: [0103a000,0103b000) size=4K avail=0 max_avail=0
 Block: [0103b000,0103c000) size=4K avail=0 max_avail=0
 Block: [0103c000,0103d000) size=4K avail=0 max_avail=0
 Block: [0103d000,0103e000) size=4K avail=0 max_avail=0
 Block: [0103e000,0103f000) size=4K avail=0 max_avail=0
 Block: [0103f000,01040000) size=4K avail=0 max_avail=0
 Block: [01040000,01041000) size=4K avail=0 max_avail=0
 Block: [01041000,01042000) size=4K avail=0 max_avail=0
 Block: [01042000,01043000) size=4K avail=0 max_avail=0
 Block: [01043000,01044000) size=4K avail=0 max_avail=0
 Block: [01044000,01045000) size=4K avail=0 max_avail=400M
 Block: [01045000,01046000) size=4K avail=0 max_avail=0
 Block: [01046000,01047000) size=4K avail=0 max_avail=0
 Block: [01047000,01048000) size=4K avail=0 max_avail=0
 Block: [01048000,01049000) size=4K avail=0 max_avail=0
 Block: [01049000,0104a000) size=4K avail=0 max_avail=0
 Block: [0104a000,0104b000) size=4K avail=0 max_avail=0
 Block: [0104b000,0104c000) size=4K avail=0 max_avail=0
 Block: [0104c000,0104d000) size=4K avail=0 max_avail=0
 Block: [0104d000,0104e000) size=4K avail=0 max_avail=0
 Block: [0104e000,0104f000) size=4K avail=0 max_avail=0
 Block: [0104f000,01050000) size=4K avail=0 max_avail=0
 Block: [01050000,01051000) size=4K avail=0 max_avail=400M
 Block: [01051000,01052000) size=4K avail=0 max_avail=0
 Block: [01052000,01053000) size=4K avail=0 max_avail=3756K
 Block: [01053000,01054000) size=4K avail=0 max_avail=0
 Block: [01054000,01055000) size=4K avail=0 max_avail=3756K
 Block: [01055000,01400000) size=3756K avail=3756K max_avail=3756K
 Block: [01800000,01801000) size=4K avail=0 max_avail=400M
 Block: [01801000,02000000) size=8188K avail=8188K max_avail=8188K
 Block: [03000000,1c000000) size=400M avail=400M max_avail=400M
 Block: [1e000000,1ebe0000) size=12160K avail=12160K max_avail=12160K
 => mem_size=444485632 (423 MB) / mem_avail=444112896 (423 MB)

:unused_phys_alloc:Allocator 0x28063b8 dump:
 Block: [00100000,00200000) size=1M avail=1M max_avail=1M
 Block: [0020d000,01008000) size=14316K avail=14316K max_avail=14316K
 Block: [01400000,01800000) size=4M avail=4M max_avail=4M
 Block: [02000000,03000000) size=16M avail=16M max_avail=32M
 Block: [1c000000,1e000000) size=32M avail=32M max_avail=32M
 Block: [1ebe0000,1f000000) size=4224K avail=4224K max_avail=32M
 Block: [fec00000,fec01000) size=4K avail=4K max_avail=4K
 Block: [fee00000,fee01000) size=4K avail=4K max_avail=64K
 Block: [ffff0000,ffffffff] size=64K avail=64K max_avail=64K
 => mem_size=74633216 (71 MB) / mem_avail=74633216 (71 MB)

:unused_virt_alloc:Allocator 0x2807424 dump:
 Block: [00002000,02000000) size=32760K avail=32760K max_avail=32760K
 Block: [02d8a000,04d8a000) size=32M avail=0 max_avail=0
 Block: [04d8a000,40000000) size=969176K avail=969176K max_avail=1792M
 Block: [50000000,c0000000) size=1792M avail=1792M max_avail=1792M
 => mem_size=2938585088 (2802 MB) / mem_avail=2905030656 (2770 MB)

:virt_alloc:       Allocator 0x2801e64 dump:
 Block: [0283e000,0283f000) size=4K avail=0 max_avail=0
 Block: [0283f000,02840000) size=4K avail=0 max_avail=0
 Block: [02840000,02841000) size=4K avail=0 max_avail=32M
 Block: [02841000,02842000) size=4K avail=0 max_avail=0
 Block: [02842000,02d87000) size=5396K avail=5396K max_avail=32M
 Block: [02d8a000,04d8a000) size=32M avail=32M max_avail=32M
 => mem_size=39096320 (37 MB) / mem_avail=39079936 (37 MB)

:io_mem_alloc:     Allocator 0x2802edc dump:
 Block: [00000000,00100000) size=1M avail=1M max_avail=1M
 Block: [1f000000,fec00000) size=3580M avail=3580M max_avail=3580M
 Block: [fec01000,fee00000) size=2044K avail=2044K max_avail=18364K
 Block: [fee01000,ffff0000) size=18364K avail=18364K max_avail=18364K
 => mem_size=3775848448 (3600 MB) / mem_avail=3775848448 (3600 MB)

boot module 'acpi_drv' (96740 bytes)
boot module 'fb_drv' (305596 bytes)
boot module 'status_bar' (114120 bytes)
boot module 'init' (254488 bytes)
boot module 'platform_drv' (289772 bytes)
boot module 'ps2_drv' (110324 bytes)
boot module 'testnit' (84060 bytes)
boot module 'config' (6549 bytes)
boot module 'launchpad.config' (594 bytes)
boot module 'ld.lib.so' (702684 bytes)
boot module 'rom_filter' (86348 bytes)
boot module 'timer' (89704 bytes)
boot module 'xray_trigger' (112640 bytes)
boot module 'pointer' (71144 bytes)
boot module 'report_rom' (101328 bytes)
boot module 'nitpicker' (265900 bytes)
boot module 'scout' (1703896 bytes)
boot module 'liquid_fb' (248988 bytes)
boot module 'launchpad' (740624 bytes)
boot module 'nitlog' (124736 bytes)
Warning: need physical memory, but Platform object not constructed yet
Warning: need physical memory, but Platform object not constructed yet
Genode 17.08
423 MiB RAM and 261142 caps assigned to init
Warning: void Genode::Rpc_cap_factory::free(Genode::Native_capability)
not implemented - resources leaked: 0x1
Warning: void Genode::Rpc_cap_factory::free(Genode::Native_capability)
not implemented - resources leaked: 0x2
Warning: void Genode::Rpc_cap_factory::free(Genode::Native_capability)
not implemented - resources leaked: 0x4
Warning: void Genode::Rpc_cap_factory::free(Genode::Native_capability)
not implemented - resources leaked: 0x8
Warning: void Genode::Rpc_cap_factory::free(Genode::Native_capability)
not implemented - resources leaked: 0x10
[init] child "nitpicker_config" announces service "ROM"

[init] child "acpi_report_rom" announces service "Report"
[init] child "report_rom" announces service "Report"
[init] child "acpi_report_rom" announces service "ROM"
[init] child "report_rom" announces service "ROM"
[init] child "timer" announces service "Timer"
Warning: void Genode::Rpc_cap_factory::free(Genode::Native_capability)
not implemented - resources leaked: 0x20
[init -> nitpicker_config] Warning: top-level node <xray> missing in
input ROM xray
[init -> nitpicker_config] Warning: could not obtain input value for
input xray_enabled
[init -> acpi_drv] Found MADT

[init -> acpi_drv] MADT IRQ 0 -> GSI 2 flags: 0
[init -> acpi_drv] MADT IRQ 9 -> GSI 9 flags: 13
[init -> acpi_drv] Found MCFG
[init -> acpi_drv] MCFG BASE 0xe0000000 seg 0x0 bus 0x0-0xff
Warning: void Genode::Rpc_cap_factory::free(Genode::Native_capability)
not implemented - resources leaked: 0x40
Warning: unmapping of managed dataspaces not yet supported

Warning: void Genode::Rpc_cap_factory::free(Genode::Native_capability)
not implemented - resources leaked: 0x80
[init] child "platform_drv" announces service "Platform"

[init -> fb_drv] Found PCI VGA at 00:02.0
[init -> fb_drv] fb mapped to 0x2000
[init] child "fb_drv" announces service "Framebuffer"
[init -> fb_drv] Warning: VBE Bios not present
[init -> fb_drv] Warning: Could not set vesa mode 0x0@16
[init -> ps2_drv] Error: no data available
[init -> nitpicker] Error: Framebuffer-session creation failed
(ram_quota=8192, cap_quota=3)
[init -> nitpicker] Error: __cxa_guard_abort called

Kernel: Thread 'ep' died because of an uncaught exception
[init -> nitpicker] Error: Uncaught exception of type
'Genode::Service_denied'
[init -> nitpicker] Warning: abort called - thread: ep

[init] child "nitpicker" exited with exit value 1
[init -> ps2_drv] Error: no data available
[init -> ps2_drv] i8042: self test failed (0x23)
[init -> ps2_drv] Error: failed to read from port
[init -> ps2_drv] Warning: scan code setting not supported
[init -> ps2_drv] Using keyboard with scan code set 1
[init -> ps2_drv] Error: failed to read from port
[init -> ps2_drv] Warning: could not reset mouse (missing ack)
[init -> ps2_drv] Error: failed to read from port
[init -> ps2_drv] Warning: could not reset mouse (unexpected response)
[init -> ps2_drv] Error: failed to read from port
[init -> ps2_drv] Error: failed to read from port
[init -> ps2_drv] Warning: could not enable stream
[init -> ps2_drv] Error: failed to read from port
[init -> ps2_drv] Error: failed to read from port
[init -> ps2_drv] Error: failed to read from port
[init -> platform_drv] PS2 uses IRQ, vector 0x1
[init -> platform_drv] PS2 uses IRQ, vector 0xc
[init] child "ps2_drv" announces service "Input"



On 08/25/2017 08:31 AM, Alexander Boettcher wrote:
> Hello,
>
> since last week we successful added UEFI support to Genode/seL4 for x86.
>
> In this course we extended the seL4 6.0 kernel (beside the NOVA kernel
> and our own kernel - Genode/hw) to be also a Multiboot2 (MBI2) kernel.
> The MBI2 specification [3] provides to the kernel the ACPI RSDP
> information, which was the main reason to add MBI2 support. Together
> with GRUB2 (as UEFI capable bootloader) we were able to get our setups
> running on various native x86 machines and on Qemu.
>
> Additionally we extended the 3 kernels to propagate the ACPI RSDP
> information further to the user-land, since there the ACPI driver also
> failed to lookup the ACPI RSDP information.
>
> The patch for the seL4 kernel are currently on our staging branch (our
> automatically tested branch) and will show up in the upcoming release
> next week eventually.
>
> Currently, the patches are tight to Genode, but I can open up a feature
> issue on seL4 github if you are fine with the general direction - so
> adding MBI2 support in general. Or you would rather go in another
> direction like writing an own UEFI boot loader, which maybe is more
> minimal compared to GRUB2 etc etc.
>
> I have to admit, that the code addition to the seL4 kernel is far from
> being optimal - amount of code because of redundant MBI 1 vs 2 code,
> correctness of code (I'm not super familiar with the internals of the
> seL4 kernel), missing framebuffer information etc - but this we may
> discuss in more detail on github, if wanted.
>
>
> Cheers,
>
> Alex.
>
> [0]
> https://github.com/genodelabs/genode/commit/b9aa16eb3e671a7e3c1474b076a244c7c97e5dea
> "sel4: kernel patch to get ACPI information"
> [1]
> https://github.com/genodelabs/genode/commit/c09783eed9a52ad72e8a1a986b832303574612ba
> "sel4: add uefi boot support via mbi2"
> [3]
> http://git.savannah.gnu.org/cgit/grub.git/tree/doc/multiboot.texi?h=multiboot2
>
> On 10.08.2017 16:50, Adrian.Danis@data61.csiro.au wrote:
>> Hi Edward,
>>
>> In the near future? Unfortunately not. UEFI support is definitely something that we talk about every so often, but just never makes it high enough up the priority list for us internally.
>>
>> A configuration option for overriding the RSDP search doesn't so too unreasonable in cases where there isn't a BIOS region to search. At least until we can retrieve the address from the UEFI runtime.
>>
>> It is entirely possible that any number of tables and initialization needs to happen before the timer, or other hardware, will work. Currently the ACPI tables here are just being used to find the base address of the HPET, and it is assumed that it is in a working state and no further setup needs to be done.
>>
>> As for the IRQ numbers in seL4 you are seeing the local CPU vector delivery number, not the source I/O APIC interrupt number or GSI. To determine the IRQ source you could check the x86KSIRQState for the local CPU vector (in this case 125), unpack the x86_irq_state_t type, and see where it came from.
>>
>> The user code though is first trying to use the HPET and then if it cannot find that (i.e. it's not in the ACPI tables) then it falls back to the PIT. If it finds a HPET then it will try and use FSB (i.e. MSI) delivery, and failing that fall back to I/O APIC delivery. If you want to work out which of these its using you could either infer from the x86KSIRQState as mentioned above or instrument https://github.com/seL4/util_libs/blob/fff76a36a02b8ccef3aa0b201751c57b62ac3621/libplatsupport/src/plat/pc99/ltimer.c#L225 and https://github.com/seL4/util_libs/blob/fff76a36a02b8ccef3aa0b201751c57b62ac3621/libplatsupport/src/plat/pc99/ltimer.c#L306 to see what exactly it is doing.
>>
>> Adrian
>>
>> On Thu 10-Aug-2017 4:56 AM, Edward Sandberg wrote:
>>
>> Is there a plan to add UEFI support in seL4 for x86 hardware in the near
>> future?  Newer x86 boards are frequently UEFI only.  It is possible to
>> get around the lack of UEFI support, as I have done with the UP board:
>>
>> https://up-community.org/wiki/Hardware_Specification
>>
>> but I am hitting problems which I will detail below.
>>
>> When I compile using ia32_debug_xml_defconfig and boot using the
>> resulting images the board fails to find the RSDP location.  To fix this
>> I had to modify the source code a bit:
>>
>>
>> * seL4test/projects/util_libs/libplatsupport/src/plat/pc99/acpi/acpi.h
>>
>> +    #define UPBOARD_RSDP   0x5B161000
>>
>> * seL4test/projects/util_libs/libplatsupport/src/plat/pc99/acpi/acpi.c
>>
>> -    acpi->rsdp = acpi_sig_search(acpi, ACPI_SIG_RSDP,
>> strlen(ACPI_SIG_RSDP),
>> -                                 (void *) BIOS_PADDR_START, (void *)
>> BIOS_PADDR_END);
>> +    acpi->rsdp = (void *)UPBOARD_RSDP;
>>
>> * seL4test/kernel/src/plat/pc99/machine/acpi.c
>>
>> -    for (addr = (char*)BIOS_PADDR_START; addr < (char*)BIOS_PADDR_END;
>> addr += 16) {
>> +    for (addr = (char*)0; addr < (char*)PPTR_BASE; addr += 16) {
>>
>> It would be handy to have this as a kernel parameter to cover cases
>> where it is not successfully discovered automatically.  With these
>> changes I can boot the board and several tests pass but then I get stuck
>> on INTERRUPT0001 (Test interrupts with timer).  I don't get a test
>> failure or an error the board just sits and makes no more progress.
>> Someone had that test fail in this post:
>>
>> https://sel4.systems/pipermail/devel/2017-February/001328.html
>>
>> and the first recommendation was to check if the irq of the timer was
>> correctly found. I booted the board into linux to find the correct irq
>> which was listed as 0 in /proc/interupts.  I added a printf to
>> handleInterrupt in the kernel source, recompiled and when I booted seL4
>> I found that the irq reported to handleInterrupt is 125 (which sel4
>> reports as the max interrupt value) every time that function is called.
>> Adding this printf also showed me that when the test hangs the board
>> hasn't crashed or locked up as calls to handleInterrupt are made
>> continuously.
>>
>> At this point I noticed that before any tests started to run several
>> ACPI tables are not recognized:
>>
>> Parsing ACPI tables
>> Skipping table FPDTD, unknown
>> Skipping table FIDT<9c>, unknown
>> Skipping table UEFIB, unknown
>> Skipping table TPM24, unknown
>> Skipping table LPIT^D^A, unknown
>> Skipping table BCFG9^A, unknown
>> Skipping table PRAM0, unknown
>> Skipping table CSRTL^A, unknown
>> Skipping table BCFG9^A, unknown
>> Skipping table OEM0<84>, unknown
>> Skipping table OEM1@, unknown
>> Skipping table PIDVÜ, unknown
>> Skipping table RSCI,, unknown
>> Skipping table WDAT^D^A, unknown
>> Warning: skipping table ACPI XSDT
>>
>> Maybe one or more of those tables needs to be loaded to handle
>> interrupts properly. The LPIT table is conspicuous in the case of the
>> timer test but I think other tests are likely to depend on the other tables.
>>
>> Any suggestions about porting this type of hardware?
>>
>>
>>
>>
>>
>> _______________________________________________
>> Devel mailing list
>> Devel@sel4.systems
>> https://sel4.systems/lists/listinfo/devel
>>
>

_______________________________________________
Devel mailing list
Devel@sel4.systems
https://sel4.systems/lists/listinfo/devel