Commit Graph

21 Commits

Author SHA1 Message Date
Martin Stein
e0419b2401 hw: clearer naming scheme in kernel API
Rename kernel syscall in kernel call and the kernel-API
files in kernel/interface* .

ref #953
2013-11-25 09:45:30 +01:00
Martin Stein
909ab8dcd0 hw: communicate page faults via signals
Enable routing of thread events to signal contexts via
Kernel::route_thread_event.

Replace Kernel::set_pager by Kernel::route_thread_event.

In base-hw a pager object is a signal context and a pager activation
is a signal receiver. If a thread wants to start communicating its page
faults via a pager object, the thread calls Kernel::route_thread_event with
its thread ID, event ID "FAULT", and the signal context ID of the pager object.
If a pager activation wants to start handling page faults of a pager object,
the pager activation assigns the corresponding signal context to its signal
receiver. If a pager activation wants to stop handling page faults of a pager
object, the pager activation dissolves the corresponding signal context from
its signal receiver. If a thread wants to start communicating its page faults
via a pager object, the thread calls Kernel::route_thread_event with its
thread ID, event ID "FAULT", and the invalid signal context ID.

Remove Kernel::resume_faulter.

Move all page fault related code from generic kernel sources to CPU
specific cpu_support.h and cpu_support.cc.

fix #935
2013-11-14 19:57:31 +01:00
Martin Stein
20e91d0b60 base: individual implementations of pager-object
ref #935
2013-11-14 19:57:30 +01:00
Josef Söntgen
afdabe9df8 hw: enable performance counter on ARMv6 and ARMv7
To actually enable the performance counter 'perf_counter' has to be
added to the SPECS make variable.

Fixes #893.
2013-10-17 11:05:53 +02:00
Christian Helmuth
f763e5ec2a Move main bootstrap to platform-specific object
To prevent multiple execution of main-bootstrap, I moved the code to a
statically initialized object. The reason for this change is that
_main() is exeuted twice when starting dynamic binaries. Now, the object
is part of the base-common library which is linked with ld.lib.so.
2013-09-26 15:00:16 +02:00
Norman Feske
fe4a6d7d81 base: User-level tracing support 2013-08-14 18:43:19 +02:00
Martin Stein
6b42fff30e hw: use generic crt0.s for progs other than core
Use '__initial_sp' instead of '_main_utcb' to receive a main threads
UTCB pointer outside core.

Ref #766
2013-07-05 12:37:42 +02:00
Christian Prochaska
a99193ad90 Rework the internal lock interface
With this patch, the 'futex' syscall gets used for blocking and unblocking
of threads in the Linux-specific lock implementation.

The 'Native_thread_id' type, which was previously used in the
lock-internal 'Applicant' class to identify a thread to be woken up,
was not suitable anymore for implementing this change. With this patch,
the 'Thread_base*' type gets used instead, which also has the positive
effect of making the public 'cancelable_lock.h' header file
platform-independent.

Fixes #646.
2013-02-25 22:14:21 +01:00
Martin Stein
438b8be2fa base-hw: destroy signal contexts, generic signal.h
fix #641
2013-02-22 20:28:28 +01:00
Martin Stein
79d5f9c565 base-hw: Adaptation to new base library layout
This is a follow-up fix of fae63f4fa9

Fix #18
2013-02-20 19:41:49 +01:00
Norman Feske
fae63f4fa9 Merge base libraries into a single library
This patch simplifies the way of how Genode's base libraries are
organized. Originally, the base API was implemented in the form of many
small libraries such as 'thread', 'env', 'server', etc. Most of them
used to consist of only a small number of files. Because those libraries
are incorporated in any build, the checking of their inter-dependencies
made the build process more verbose than desired. Also, the number of
libraries and their roles (core only, non-core only, shared by both core
and non-core) were not easy to capture.

Hereby, the base libraries have been reduced to the following few
libraries:

- startup.mk contains the startup code for normal Genode processes.
  On some platform, core is able to use the library as well.
- base-common.mk contains the parts of the base library that are
  identical by core and non-core processes.
- base.mk contains the complete base API implementation for non-core
  processes

Consequently, the 'LIBS' declaration in 'target.mk' files becomes
simpler as well. In the most simple case, only the 'base' library must
be mentioned.

Fixes #18
2013-02-19 14:45:55 +01:00
Norman Feske
bcdc706f42 Unify 'ipc.h' and 'ipc_generic.h' across platforms
The distinction between 'ipc.h' and 'ipc_generic.h' is no more. The only
use case for platform-specific extensions of the IPC support was the
marshalling of capabilities. However, this case is accommodated by a
function interface ('_marshal_capability', '_unmarshal_capability'). By
moving the implementation of these functions from the headers into the
respective ipc libraries, we can abandon the platform-specific 'ipc.h'
headers.
2013-02-14 13:23:37 +01:00
Martin Stein
7f2f2d9120 base-hw: ease core build
Merge core only libs into the target make-files.

Use base-hw specific Board drivers that inherit
from generic Board_base.

Use Page_flags::access_t instead of additional
page_flags_t.

Fix #570
2013-01-08 11:36:52 +01:00
Martin Stein
ee6f25a028 base-hw: reorganize core-driver headers
Ref #570
2013-01-08 11:36:51 +01:00
Martin Stein
37864972b3 base-hw: build vea9x4 libs only with vea9x4 spec
Fix #561
2013-01-08 11:36:51 +01:00
Martin Stein
e7bdae62ea base-hw: remove unused library startup_core
Fix #560
2012-12-21 14:54:22 +01:00
Martin Stein
bc24a21658 base-hw: embed kernel space into platform thread
Instead of allocating and freeing the space that is needed for the
kernel thread objects from core, wich is not convenient with the
quota system, platform thread now holds the space as array by
itself.

Unfortunately we cannot measure the space size by a static function
anymore, so kernel thread had to be moved from kernel.cc into its
own header. This way platform thread can use sizeof().

Fix #543
2012-11-30 16:23:16 +01:00
Stefan Kalkowski
88316abca1 Merge panda_a2 and panda SPEC (fix #505, fix #506)
There is no obvious reason for having two different SPEC variables, definitions,
and pathes for the Pandaboard platform. It even lead to problems regarding the
omap4 framebuffer driver (look at issue #505 and #506).
2012-11-23 12:20:27 +01:00
Martin Stein
31d57a6257 Nested init on i.MX31 via base_hw. Rework base_hw.
Implies support for the ARMv6 architecture through 'base-hw'.

Get rid of 'base/include/drivers' expect of 'base/include/drivers/uart'.

Merge with the support for trustzone on VEA9X4 that came from
Stefan Kalkowski.

Leave board drivers in 'base/include/platform'.

Rework structure of the other drivers that were moved to
'base_hw/src/core' and those that came with the trustzone support.

Beautify further stuff in 'base_hw'.

Test 'nested_init' with 'hw_imx31' (hardware) and 'hw_panda_a2' (hardware),
'demo' and 'signal' with 'hw_pbxa9' (qemu) and 'hw_vea9x4'
(hardware, no trustzone), and 'vmm' with 'hw_vea9x4'
(hardware, with trustzone).
2012-11-14 16:36:41 +01:00
Stefan Kalkowski
8393ac6895 base-hw: implement vm_session for TrustZone
* Introduces Schedule_context
* Use fast-interrupts or normal interrupts
* Add mode-transition between secure/non-secure world
* Limit system resources for Genode apps due to non-secure world

This commit implements the newly introduced Vm session interface to be used
on top of TrustZone capable Armv7 CPUs. Therefore a new Schedule_context is
introduced in the kernel. Threads and Vms are both Schedule_contexts used
by the scheduler. In contrast to a thread a vm uses a different assembler
mode switch to the non-secure, virtual world, as well as another exception
is used, when the non-secure world is left. For both worlds to co-exist
the interrupt-controller needs to be configured, so that the secure (Genode)
world uses fast-interrupts only, and the non-secure world only legacy
interrupts.
The only TrustZone capable platform the base-hw kernel works on top of
is the CoreTile Express 9x4 for the Versatile Express motherboard. For a
virtual machine working properly on top some platform resources must be
reserved. Therefore there exist two flavours of this platform now, one with
the 'trustzone' spec-variable enabled, and one without. If 'trustzone' is
specified most platform resources (DDR-RAM, and most IRQs) are reserved
for the Vm and not available to the secure Genode world.
2012-10-29 10:08:30 +01:00
Martin Stein
ff65f6f021 Run Genode directly on hardware with 'base-hw'. 2012-08-03 12:06:37 +02:00