Commit Graph

205 Commits

Author SHA1 Message Date
Alexander Boettcher
4761826843 sel4: change a error message into warning
This condition is non-fatal in the most cases, so leave it as a
diagnostic message.
2017-11-30 11:23:17 +01:00
Alexander Boettcher
2b6ae514b5 sel4: add mbi2 framebuffer support
Issue #2555
2017-11-30 11:23:09 +01:00
Alexander Boettcher
7d54d1da0c sel4: enable support for direct unmap in core
Issue #2563
2017-11-30 11:23:06 +01:00
Alexander Boettcher
990b7945a7 sel4: use kernel branch 7.0 + our mastered commits
for uefi, multiboot2, benchmark interface adaptations and ARM define build
fixes.

Issue #2562
2017-11-30 11:23:05 +01:00
Christian Helmuth
491be000ca depot: update recipe hashes 2017-11-09 12:19:59 +01:00
Norman Feske
a63afe53ae sel4: check for python module "six" 2017-11-09 12:18:43 +01:00
Christian Helmuth
30948a4b0d depot: update recipe hashes 2017-11-06 13:57:25 +01:00
Alexander Boettcher
9655ebbefe sel4: enable nx bit handling for ARM
Issue #1723
2017-11-01 08:39:49 +01:00
Alexander Boettcher
db329b02b5 base: enable executable memory fault handling
Fixes #1723
2017-11-01 08:39:48 +01:00
Christian Helmuth
ee4ee6a8ac depot: update recipe hashes 2017-10-19 13:31:18 +02:00
Alexander Boettcher
d43a5a6ef1 sel4: adjust root cnode size for wand_quad board
and cleanup for x86 32/64 the autoconf.h patches

Fixes #2514
2017-10-05 17:39:55 +02:00
Alexander Boettcher
013efb58ac sel4: free up top root directory of processes
Issue #2514
2017-10-05 17:39:55 +02:00
Christian Helmuth
b446e17bcd sel4: instruct python to skip .pyc generation
This keeps the contrib directory clean.
2017-09-07 11:47:16 +02:00
Christian Helmuth
2ed904faab depot: update recipe hashes 2017-08-30 12:41:43 +02:00
Alexander Boettcher
035e28d7d9 sel4: apply patches in deterministic order
Issue #2242
2017-08-30 10:01:36 +02:00
Alexander Boettcher
bcfcc1db9c sel4: handle unmap error more gracefully
Issue #2505
2017-08-30 10:00:00 +02:00
Alexander Boettcher
4ac0bd514f sel4: add uefi boot support via mbi2
Multiboot2 provides the ACPI RSDP pointer from the GRUB2 bootloader.

Issue #2242
2017-08-28 16:49:47 +02:00
Alexander Boettcher
4de2e52b34 sel4: provide ACPI infos by 'platform_info' ROM
Issue #2242
2017-08-28 16:49:47 +02:00
Alexander Boettcher
a8227e80af sel4: kernel patch to get ACPI information
Issue #2242
2017-08-28 16:49:47 +02:00
Alexander Boettcher
09ce611353 sel4: free-up virtual regions in core
Fixes #2505
2017-08-28 16:49:47 +02:00
Stefan Kalkowski
ea46c462a4 base: make stack area base specifiable for core
When running core as the kernel inside every component, a separate
stack area for core is needed that is different from the user-land
component's one.

Ref #2091
2017-08-28 16:49:46 +02:00
Alexander Boettcher
430bde3636 core: remove unmap from rm_client
The flush/unmap of memory is tied to an address space and not to a thread.
Move the handling from the Rm_client to the Adress_space class.

Issue #2209
2017-08-28 16:49:44 +02:00
Alexander Boettcher
c2950e13eb core: serve parent and core service by one ep
Fixes #2484
2017-08-28 16:49:43 +02:00
Martin Stein
abc80b7782 prepare_port sel4: check required python modules
This prevents undescriptive errors when building sel4.

Ref #2490
2017-08-28 16:49:36 +02:00
Christian Helmuth
8b073f46df depot: update recipe hashes 2017-08-18 10:25:28 +02:00
Alexander Boettcher
fd0b256f7c sel4: support cpu utilization via TRACE service
using benchmark infrastructure of the seL4 kernel

Issue #2451
2017-08-18 10:24:47 +02:00
Alexander Boettcher
58e4f6cf9d core: add map method to pd_session interface
The method can be used to trigger the eager insertion of page frames into
page tables. Intention: to be used for memory used for DMA.

Issue #2209
2017-08-18 10:24:46 +02:00
Alexander Boettcher
f825775e40 sel4: update to kernel 6.0
Issue #2451
2017-08-18 10:24:45 +02:00
Alexander Boettcher
0ddda79511 sel4: add priority support
Issue #2451
2017-08-17 11:04:24 +02:00
Alexander Boettcher
7a8e0e59af sel4: enable smp for x86
Issue #2451
2017-08-17 11:04:24 +02:00
Alexander Boettcher
da5441292a sel4: add Wandboard Quad (iMX6) support
Issue #2451
2017-08-17 11:04:21 +02:00
Alexander Boettcher
66c0c7b6f1 sel4: add x86_64 support
Issue #2451
2017-08-17 11:04:20 +02:00
Alexander Boettcher
95329c82e2 sel4: update to 5.2.0
Issue #2451
2017-08-17 11:04:19 +02:00
Norman Feske
0d1be4abe2 depot: update recipe hashes 2017-06-29 12:00:04 +02:00
Stefan Kalkowski
a004462096 hw: fix capability accounting of kernel/core
The recently implemented capability resource trading scheme unfortunately
broke the automated capability memory upgrade mechanism needed by base-hw
kernel/core. This commit splits the capability memory upgrade mechanism
from the PD session ram_quota upgrade, and moves that functionality
into a separate Pd_session::Native_pd interface.

Ref #2398
2017-06-19 12:35:55 +02:00
Norman Feske
6299f4a7df base-sel4: print boot-module names 2017-05-31 13:16:16 +02:00
Norman Feske
0167d5af50 Integrate core's RAM service into the PD service
Fixes #2407
2017-05-31 13:16:14 +02:00
Norman Feske
5a3a1c704b base: use 'Ram_allocator' as stack-area back end
The 'Stack_area_ram_session' is now a 'Stack_area_ram_allocator', which
simplifies the code and remove a dependency from the 'Ram_session'
interface, which we want to remove after all.

Issue #2407
2017-05-31 13:16:13 +02:00
Norman Feske
a96919632e core: unify Pd_session_component across kernels
Issue #2407
2017-05-31 13:16:13 +02:00
Norman Feske
4773707495 core: split RAM dataspace factory from RAM service
By separating the session-interface concerns from the mechanics of the
dataspace creation, the code becomes simpler to follow, and the RAM
session can be more easily merged with the PD session in a subsequent
step.

Issue #2407
2017-05-31 13:16:12 +02:00
Norman Feske
65225a94b1 core: simplify initialization
This patch removes the 'Core_parent' and 'Core_pd_session', and reduces
the 'Core_env'.
2017-05-31 13:16:12 +02:00
Norman Feske
a1df4fee44 base: restructure signal-submit initialization
This patch allows core's 'Signal_transmitter' implementation to sidestep
the 'Env::Pd' interface and thereby adhere to a stricter layering within
core. The 'Signal_transmitter' now uses - on kernels that depend on it -
a dedicated (and fairly freestanding) RPC proxy mechanism for signal
deliver, instead of channeling signals through the 'Pd_session::submit'
RPC function.
2017-05-31 13:16:12 +02:00
Martin Stein
c70fed29f7 os/timer: interpolate time via timestamps
Previously, the Genode::Timer::curr_time always used the
Timer_session::elapsed_ms RPC as back end.  Now, Genode::Timer reads
this remote time only in a periodic fashion independently from the calls
to Genode::Timer::curr_time. If now one calls Genode::Timer::curr_time,
the function takes the last read remote time value and adapts it using
the timestamp difference since the remote-time read. The conversion
factor from timestamps to time is estimated on every remote-time read
using the last read remote-time value and the timestamp difference since
the last remote time read.

This commit also re-works the timeout test. The test now has two stages.
In the first stage, it tests fast polling of the
Genode::Timer::curr_time. This stage checks the error between locally
interpolated and timer-driver time as well as wether the locally
interpolated time is monotone and sufficiently homogeneous. In the
second stage several periodic and one-shot timeouts are scheduled at
once. This stage checks if the timeouts trigger sufficiently precise.

This commit adds the new Kernel::time syscall to base-hw. The syscall is
solely used by the Genode::Timer on base-hw as substitute for the
timestamp. This is because on ARM, the timestamp function uses the ARM
performance counter that stops counting when the WFI (wait for
interrupt) instruction is active. This instruction, however is used by
the base-hw idle contexts that get active when no user thread needs to
be scheduled.  Thus, the ARM performance counter is not a good choice for
time interpolation and we use the kernel internal time instead.

With this commit, the timeout library becomes a basic library. That means
that it is linked against the LDSO which then provides it to the program it
serves. Furthermore, you can't use the timeout library anymore without the
LDSO because through the kernel-dependent LDSO make-files we can achieve a
kernel-dependent timeout implementation.

This commit introduces a structured Duration type that shall successively
replace the use of Microseconds, Milliseconds, and integer types for duration
values.

Open issues:

* The timeout test fails on Raspberry PI because of precision errors in the
  first stage. However, this does not render the framework unusable in general
  on the RPI but merely is an issue when speaking of microseconds precision.

* If we run on ARM with another Kernel than HW the timestamp speed may
  continuously vary from almost 0 up to CPU speed. The Timer, however,
  only uses interpolation if the timestamp speed remained stable (12.5%
  tolerance) for at least 3 observation periods. Currently, one period is
  100ms, so its 300ms. As long as this is not the case,
  Timer_session::elapsed_ms is called instead.

  Anyway, it might happen that the CPU load was stable for some time so
  interpolation becomes active and now the timestamp speed drops. In the
  worst case, we would now have 100ms of slowed down time. The bad thing
  about it would be, that this also affects the timeout of the period.
  Thus, it might "freeze" the local time for more than 100ms.

  On the other hand, if the timestamp speed suddenly raises after some
  stable time, interpolated time can get too fast. This would shorten the
  period but nonetheless may result in drifting away into the far future.
  Now we would have the problem that we can't deliver the real time
  anymore until it has caught up because the output of Timer::curr_time
  shall be monotone. So, effectively local time might "freeze" again for
  more than 100ms.

  It would be a solution to not use the Trace::timestamp on ARM w/o HW but
  a function whose return value causes the Timer to never use
  interpolation because of its stability policy.

Fixes #2400
2017-05-31 13:16:11 +02:00
Norman Feske
4d442bca30 Streamline exception types
This patch reduces the number of exception types by facilitating
globally defined exceptions for common usage patterns shared by most
services. In particular, RPC functions that demand a session-resource
upgrade not longer reflect this condition via a session-specific
exception but via the 'Out_of_ram' or 'Out_of_caps' types.

Furthermore, the 'Parent::Service_denied', 'Parent::Unavailable',
'Root::Invalid_args', 'Root::Unavailable', 'Service::Invalid_args',
'Service::Unavailable', and 'Local_service::Factory::Denied' types have
been replaced by the single 'Service_denied' exception type defined in
'session/session.h'.

This consolidation eases the error handling (there are fewer exceptions
to handle), alleviates the need to convert exceptions along the
session-creation call chain, and avoids possible aliasing problems
(catching the wrong type with the same name but living in a different
scope).
2017-05-31 13:16:07 +02:00
Norman Feske
843dd179d7 base: remove int return types from 'Ram_session'
This patch replaces the existing C-style error codes with C++
exceptions.

Fixes #895
2017-05-31 13:16:04 +02:00
Norman Feske
58f44d39c5 base: use 'Ram_quota' in 'Ram_session' args
This patch replaces the former use of size_t with the use of the
'Ram_quota' type to improve type safety (in particular to avoid
accidentally mixing up RAM quotas with cap quotas).

Issue #2398
2017-05-31 13:16:04 +02:00
Norman Feske
ff68d77c7d base: new 'Ram_allocator' interface
The 'Ram_allocator' interface contains the subset of the RAM session
interface that is needed to satisfy the needs of the 'Heap' and
'Sliced_heap'. Its small size makes it ideal for intercepting memory
allocations as done by the new 'Constrained_ram_allocator' wrapper
class, which is meant to replace the existing 'base/allocator_guard.h'
and 'os/ram_session_guard.h'.

Issue #2398
2017-05-31 13:16:04 +02:00
Norman Feske
bc82cce72b core: add Platform::max_caps()
This method returns the kernel-specific system-global limit of the total
number of capabilities.

Issue #2398
2017-05-31 13:16:03 +02:00
Norman Feske
b58fbe5ba5 Depot-archive recipes
Issue #2339
2017-05-31 13:15:56 +02:00
Norman Feske
8c4a2a48ca core: install core-<kernel>.o at bin/
By installing the core object to bin/, we follow the same convention as
for regular binaries. This, in turn, enables us to ship core in a
regular binary archive. The patch also adjusts the run tool to pick up
the core object from bin/ for the final linking stage.
2017-05-02 15:29:02 +02:00