Commit Graph

77 Commits

Author SHA1 Message Date
Adrian-Ken Rueegsegger
c1bb82fb6b base-hw: make Muen sinfo API publicly available
The sinfo function declared in sinfo_instance.h creates a static sinfo
object instance and returns a pointer to the caller.

- kernel timer and platform support to use sinfo() function to
  instantiate sinfo object
- address and size of the base-hw RAM region via the sinfo API
- log_status() function in sinfo API
2016-06-22 12:19:21 +02:00
Stefan Kalkowski
964e9e91c7 base-hw: eliminate the need to $(BASE_HW_DIR)
Instead of introducing a $(BASE_HW_DIR) variable that has to be defined in each
core makefile for the different base-hw targets, this commit replaces the
$(REP_DIR) variable usage in core.inc files with $(BASE_DIR)/../base-hw.

Ref #1955
2016-05-31 15:09:53 +02:00
Martin Stein
1208d14681 hw: use kernel timer for timer driver
* Adds public timeout syscalls to kernel API
  * Kernel::timeout installs a timeout and binds a signal context to it that
    shall trigger once the timeout expired
  * With Kernel::timeout_max_us, one can get the maximum installable timeout
  * Kernel::timeout_age_us returns the time that has passed since the
    calling threads last timeout installation

* Removes all device specific back-ends for the base-hw timer driver and
  implements a generic back-end taht uses the kernel timeout API

* Adds assertions about the kernel timer frequency that originate from the
  requirements of the the kernel timeout API and adjusts all timers
  accordingly by using the their internal dividers

* Introduces the Kernel::Clock class. As member of each Kernel::Cpu object
  it combines the management of the timer of the CPU with a timeout scheduler.
  Not only the timeout API uses the timeout scheduler but also the CPUs job
  scheduler for installing scheduling timeouts.

* Introduces the Kernel::time_t type for timer tic values and values inherited
  from timer tics (like microseconds).

Fixes #1972
2016-05-26 15:54:15 +02:00
Norman Feske
a99989af40 Separation of thread operations from CPU session
This patch moves the thread operations from the 'Cpu_session'
to the 'Cpu_thread' interface.

A noteworthy semantic change is the meaning of the former
'exception_handler' function, which used to define both, the default
exception handler or a thread-specific signal handler. Now, the
'Cpu_session::exception_sigh' function defines the CPU-session-wide
default handler whereas the 'Cpu_thread::exception_sigh' function
defines the thread-specific one.

To retain the ability to create 'Child' objects without invoking a
capability, the child's initial thread must be created outside the
'Child::Process'. It is now represented by the 'Child::Initial_thread',
which is passed as argument to the 'Child' constructor.

Fixes #1939
2016-05-23 15:52:39 +02:00
Johannes Schlatow
f81867f208 base-hw: refactor core.mk and core.inc files
All core.inc files now use $BASE_HW_DIR instead of $REP_DIR. The former
is defined by the core.mk file. This allows including core.inc files
from other repositories (e.g. genode-world) for additional platform
support.

Fixes #1955
2016-05-23 15:52:35 +02:00
Norman Feske
1f395ae780 base: new interface for textual output
Issue #1942
2016-05-09 13:25:01 +02:00
Norman Feske
40a5af42eb Clean up base-library structure
This patch moves the base library from src/base to src/lib/base,
flattens the library-internal directory structure, and moves the common
parts of the library-description files to base/lib/mk/base.inc and
base/lib/mk/base-common.inc.

Furthermore, the patch fixes a few cosmetic issues (whitespace and
comments only) that I encountered while browsing the result.

Fixes #1952
2016-05-09 13:24:11 +02:00
Norman Feske
7274ca997d Remove Genode::Process from API
This patch makes the former 'Process' class private to the 'Child'
class and changes the constructor of the 'Child' in a way that
principally enables the implementation of single-threaded runtime
environments that virtualize the CPU, PD, and RAM services. The
new interfaces has become free from side effects. I.e., instead
of implicitly using Genode::env()->rm_session(), it takes the reference
to the local region map as argument. Also, the handling of the dynamic
linker via global variables is gone. Now, the linker binary must be
provided as constructor argument.

Fixes #1949
2016-05-09 13:10:52 +02:00
Norman Feske
511acad507 Consolidate RM service into PD session
This patch integrates three region maps into each PD session to
reduce the session overhead and to simplify the PD creation procedure.
Please refer to the issue cited below for an elaborative discussion.

Note the API change:

With this patch, the semantics of core's RM service have changed. Now,
the service is merely a tool for creating and destroying managed
dataspaces, which are rarely needed. Regular components no longer need a
RM session. For this reason, the corresponding argument for the
'Process' and 'Child' constructors has been removed.

The former interface of the 'Rm_session' is not named 'Region_map'. As a
minor refinement, the 'Fault_type' enum values are now part of the
'Region_map::State' struct.

Issue #1938
2016-05-09 13:10:51 +02:00
Johannes Schlatow
5b12034531 hw_zynq: refactor specs
This is a generalisation approach of the hw_zynq target. As the boards
typically use UART1 instead of UART0 (used by qemu), we have to
distinguish between those. Moreover, in general hw_zynq does not imply
zynq_qemu anymore, so that the support of particular boards can be
placed in third-party or community repositories (e.g. Genode world).

Fixes #1926
2016-04-25 10:48:00 +02:00
Norman Feske
051e84c4b4 Move server API concept to base framework
This commit introduces the new `Component` interface in the form of the
headers base/component.h and base/entrypoint.h. The os/server.h API
has become merely a compatibilty wrapper and will eventually be removed.
The same holds true for os/signal_rpc_dispatcher.h. The mechanism has
moved to base/signal.h and is now called 'Signal_handler'.

Since the patch shuffles headers around, please do a 'make clean' in the
build directory.

Issue #1832
2016-04-11 11:51:46 +02:00
Norman Feske
7f73e5e879 base: hide internals of the Thread API
This patch moves details about the stack allocation and organization
the base-internal headers. Thereby, I replaced the notion of "thread
contexts" by "stacks" as this term is much more intuitive. The fact that
we place thread-specific information at the bottom of the stack is not
worth introducing new terminology.

Issue #1832
2016-03-07 12:34:46 +01:00
Norman Feske
3473955212 base-linux/nova: unify include/rm_session/client.h
By moving the stub implementation to rm_session_client.cc, we can use
the generic base/include/rm_session/client.h for base-linux and
base-nova and merely use platform-specific implementations.

Issue #1832
2016-03-07 12:34:45 +01:00
Norman Feske
e6729316ff base: uniform base-internal header structure
This patch establishes a common organization of header files
internal to the base framework. The internal headers are located at
'<repository>/src/include/base/internal/'. This structure has been
choosen to make the nature of those headers immediately clear when
included:

  #include <base/internal/lock_helper.h>

Issue #1832
2016-03-07 12:34:45 +01:00
Norman Feske
be496c6dc1 base: remove kernel-specific base/sleep.h
With this patch, the platform differences reside solely in the
implementation of the base library.

Issue #1832
2016-03-07 12:34:44 +01:00
Norman Feske
62b1c55399 Integrate CAP session into PD session
This patch integrates the functionality of the former CAP session into
the PD session and unifies the approch of supplementing the generic PD
session with kernel-specific functionality. The latter is achieved by
the new 'Native_pd' interface. The kernel-specific interface can be
obtained via the Pd_session::native_pd accessor function. The
kernel-specific interfaces are named Nova_native_pd, Foc_native_pd, and
Linux_native_pd.

The latter change allowed for to deduplication of the
pd_session_component code among the various base platforms.

To retain API compatibility, we keep the 'Cap_session' and
'Cap_connection' around. But those classes have become mere wrappers
around the PD session interface.

Issue #1841
2016-03-07 12:34:44 +01:00
Norman Feske
b1910cdd54 Integrate SIGNAL session into PD session
This patch removes the SIGNAL service from core and moves its
functionality to the PD session. Furthermore, it unifies the PD service
implementation and terminology across the various base platforms.

Issue #1841
2016-03-07 12:34:44 +01:00
Mark Vels
1668983efa base-hw: RISC-V Rocket Core on Zynq
This commit adds rocket core on the Zynq FPGA support to base HW. It also takes
advantage of the new timer infrastructure introduced with the privileged 1.8 and
adds improved TLB flush support.

fixes #1880
2016-02-26 11:36:51 +01:00
Sebastian Sumpf
c246a0d194 base-hw: initial RISC-V support
using the spike instruction emulator

issue #1880
2016-02-26 11:36:51 +01:00
Stefan Kalkowski
5fc9f68941 hw_x86_64: do not reference any muen specifics
Do not build core-muen_on library without the muen soecifier set.
Do not reference files of the muen contrib directory in the first
pass of make's rule analysis, when parding the muen specific kernel
makefile.

Fix #1859
2016-01-26 16:20:47 +01:00
Stefan Kalkowski
c3d4802ac8 hw: re-implement lazy FPU context switch
The new implementation of the FPU and FPU context is taken out to
separate architecture-dependent header files. The generic Cpu_lazy_state
is deleted. There is no hint about the existence of something like an
FPU in the generic non-architexture-dependent code anymore. Instead the
architecture-dependent CPU context of a thread is extended by an FPU
context where supported.

Moreover, the current FPU implementations are enhanced so that threads
that get deleted now release the FPU when still obtaining it.

Fix #1855
2016-01-26 16:20:38 +01:00
Stefan Kalkowski
7aff1895bf hw: enable SMP for ARM Cortex A9
This commit enables multi-processing for all Cortex A9 SoCs we currently
support. Moreover, it thereby enables the L2 cache for i.MX6 that was not
enabled until now. However, the QEMU variants hw_pbxa9 and hw_zynq still
only use 1 core, because the busy cpu synchronization used when initializing
multiple Cortex A9 cores leads to horrible boot times on QEMU.

During this work the CPU initialization in general was reworked. From now
on lots of hardware specifics were put into the 'spec' specific files, some
generic hook functions and abstractions thereby were eliminated. This
results to more lean implementations for instance on non-SMP platforms,
or in the x86 case where cache maintainance is a non-issue.

Due to the fact that memory/cache coherency and SMP are closely coupled
on ARM Cortex A9 this commit combines so different aspects.

Fix #1312
Fix #1807
2016-01-26 16:20:18 +01:00
Stefan Kalkowski
e05d26567d hw: make 'smp' property an aspect (Ref #1312)
This commit separates certain SMP aspects into 'spec/smp' subdirectories.
Thereby it simplifies non-SMP implementations again, where no locking
and several platform specific maintainance operations are not needed.
Moreover, it moves several platform specifics to appropriated places,
removes dead code from x86, and starts to turn global static pointers
into references that are handed over.
2016-01-15 16:42:12 +01:00
Martin Stein
bed04f1f16 hw & imx53: kernel Trustzone config for USB armory
On the USB Armory, we want to secure different devices than on other i.MX53
implementations. Thus, add a board specific configuration that is interpreted
by the kernel Trustzone initialization.

Ref #1497
2015-11-29 18:17:04 +01:00
Stefan Kalkowski
ed52d5a211 Introduce 'spec' subdirectories to outline aspects
Instead of holding SPEC-variable dependent files and directories inline
within the repository structure, move them into 'spec' subdirectories
at the corresponding levels, e.g.:

  repos/base/include/spec
  repos/base/mk/spec
  repos/base/lib/mk/spec
  repos/base/src/core/spec
  ...

Moreover, this commit removes the 'platform' directories. That term was
used in an overloaded sense. All SPEC-relative 'platform' directories are
now named 'spec'. Other files, like for instance those related to the
kernel/architecture specific startup library, where moved from 'platform'
directories to explicit, more meaningful places like e.g.: 'src/lib/startup'.

Fix #1673
2015-09-16 13:58:50 +02:00
Johannes Schlatow
40b31876d2 base-hw: Add basic Zynq-7000 support (QEMU)
Ref #1599
2015-09-09 15:14:28 +02:00
Martin Stein
91cb3decdb hw_x86_64: move Cpu_context stuff to extra unit
Other platforms implement Kernel::Cpu_context stuff in
kernel/cpu_context.cc. On x86_64, it was implemented in
kernel/thread.cc. The commit fixes this inconsistency to the other
platforms.

Ref #1652
2015-09-09 15:14:27 +02:00
Martin Stein
4e98a0f64a hw: get rid of kernel/thread_* files
The distinction between Kernel::Thread and Kernel::Thread_base is
unnecessary as currently all Hw platforms would have the same content in
the latter class. Thus I've merged Kernel::Thread_base into
Kernel::Thread. Thereby, Kernel::Thread_event can be moved to
kernel/thread.h.

Ref #1652
2015-09-09 15:14:27 +02:00
Stefan Kalkowski
9f1beaa036 hw_x86_64: use 'muen' SPEC to implement aspect 2015-08-31 09:09:22 +02:00
Reto Buerki
ad411e1a90 hw_x86_64_muen: Implement PIC take_request()
The Muen-specific PIC implementation provides the irq_occurred()
function which is used to register an IRQ with the PIC upon thread
exception.

The occurred IRQs are stored in a boolean array internally and handed
out to a CPU via take_request().
2015-08-27 13:48:25 +02:00
Reto Buerki
4a51f933ce hw_x86_64_muen: Add initial pagetables file
The initial pagetables for hw_x86_64_muen specify an identity mapping
from 2MiB to 1GiB plus mappings for the paravirt pages (sinfo, timer,
...).
2015-08-27 13:48:25 +02:00
Reto Buerki
c434a5ceec hw_x86_64_muen: Add C++ implementation of Sinfo API
The Muen Sinfo API is used to retrieve information about the execution
environment of a subject running on the Muen Separation Kernel.

While the C++ API is defined in sinfo.h, musinfo.h specifies the
internal format of the information stored in the Sinfo pages provided by
the Muen SK. It is a copy of the file contained in the libmusinfo
library of the Muen project. That is the reason why the coding style in
this file differs from the official style.
2015-08-27 13:48:25 +02:00
Reto Buerki
96a0820e89 Add Muen-specific platform_support.cc
The file specifies Muen-specific MMIO regions: Sinfo and paravirt timer
pages.
2015-08-27 13:48:25 +02:00
Reto Buerki
dcd20f1566 hw: skeleton for building x86_64_muen
The hw_x86_64_muen platform is a x86/64 base-hw kernel which runs as
isolated subject (guest) on the Muen Separation Kernel (SK) [1].

The platform is implemented as an extension to hw_x86_64 replacing the
PIC and timer drivers with paravirtualized variants. The skeleton
contains a dummy PIC and timer implementation for now.

[1] - http://muen.sk
2015-08-27 13:48:24 +02:00
Reto Buerki
2a0b6fb541 hw_x86_64: Factor out _core_only_mmio_regions function
Move the _core_only_mmio_regions function to the
x86_64/platform_support.cc file. This is required to make it overridable
for other platforms deriving from x86.
2015-08-21 11:00:59 +02:00
Martin Stein
f3e76b3e9a base: use BDA header in base-nova like base-hw
Moves the Bios Data Area header from base-hw to base. Modifies the
base-nova core console that it uses the header as replacement for
the previous BDA bit logic.

Ref #1625
2015-07-21 09:30:12 +02:00
Stefan Kalkowski
89255c3979 remove Versatile Express board (Fix #1611) 2015-07-07 19:48:06 +02:00
Stefan Kalkowski
57e2f3affc hw: remove redundant file from signal library
The file seems to be there for historical reasons only.

Ref #956
2015-07-01 14:46:18 +02:00
Stefan Kalkowski
e081554731 hw: kernel backed capabilities (Fix #1443) 2015-05-26 09:40:04 +02:00
Reto Buerki
bb06826c95 hw_x86_64: Factor out initial PT to separate file
This allows the specification of different initial pagetables for a
platform based on x86_64 (e.g. Muen).
2015-05-20 17:52:58 +02:00
Stefan Kalkowski
e61a3db30d hw: separate function declaration/implementation
Move kernel object functions from its headers to compilation units,
thereby reducing the kernel's text section, cache, and TLB footprint.

Fix #1492
2015-05-06 10:55:23 +02:00
Christian Helmuth
98def2488a thread: move Thread_base::myself() to separate file
The thread library (thread.cc) in base-foc shared 95% of the code with
the generic implementation except myself(). Therefore, its
implementation is now separated from the other generic sources into
myself.cc, which allows base-foc to use a foc-specific primitive to
enable our base libraries in L4Linux.

Issue #1491
2015-05-06 10:55:17 +02:00
Alexander Boettcher
e2cbc7c5b3 base: unify some irq_session headers
remove repos/base-*/include/irq_session headers and use only a unification
from   repos/base/include/irq_session

first step

Issue #1456
2015-04-23 16:47:57 +02:00
Stefan Kalkowski
c850462f43 hw: replace kernel's object id allocators
Instead of having an ID allocator per object class use one global allocator for
all. Thereby artificial limitations for the different object types are
superfluent. Moreover, replace the base-hw specific id allocator implementation
with the generic Bit_allocator, which is also memory saving.

Ref #1443
2015-04-17 16:13:20 +02:00
Stefan Kalkowski
a168c9d6ce core: remove global capability id counter
The global capability ID counter is not used by NOVA and Fiasco.OC
and in the future not needed by base-hw too. Thereby, remove the static
counter variable from the generic code base and add it where appropriated.

Ref #1443
2015-04-17 16:13:19 +02:00
Martin Stein
60e392f0c0 hw: support Wandboard Quad (i.MX6)
The port uses the Cortex-A9 private timer for the kernel and an EPIT as
user timer. It was successfully tested on the Wandboard Quad and the CuBox-i
with the signal test. It lacks L2-cache and Trustzone support by now.

Thanks to Praveen Srinivas (IIT Madras, India) and  Nikolay Golikov (Ksys Labs
LLC, Russia). This work is partially based on their contributions.

Fix #1467
2015-04-09 16:04:43 +02:00
Adrian-Ken Rueegsegger
544148bc24 hw_x86_64: Add I/O port allocator to platform
Add the entire I/O port range to the I/O port allocator on x86. Do nothing
on ARM platforms since there are no I/O port resources.
2015-03-27 11:53:32 +01:00
Reto Buerki
5765398741 hw_x86_64: Add x86 platform services to core
Use the x86-specific platform_services.cc file and register the I/O port
session component.
2015-03-27 11:53:32 +01:00
Reto Buerki
a21959fc26 hw_x86_64: Implement APIC-based PIC driver
The implementation initializes the Local APIC (LAPIC) of CPU 0 in xapic
mode (mmio register access) and uses the I/O APIC to remap, mask and
unmask hardware IRQs. The remapping offset of IRQs is 48.

Also initialize the legacy PIC and mask all interrupts in order to
disable it.

For more information about LAPIC and I/O APIC see Intel SDM Vol. 3A,
chapter 10 and the Intel 82093AA I/O Advanced Programmable Interrupt
Controller (IOAPIC) specification

Set bit 9 in the RFLAGS register of user CPU context to enable
interrupts on kernel- to usermode switch.
2015-03-27 11:53:31 +01:00
Reto Buerki
e3332c6c53 hw_x86_64: Drop obsolete isr.s assembly file 2015-03-27 11:53:24 +01:00