Commit Graph

30 Commits

Author SHA1 Message Date
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
1b73f80350 base-hw: Fix bug in 'thread_resume' syscall. 2012-11-23 12:20:26 +01:00
Martin Stein
05f5999e71 cpu_session: Access thread state by value 2012-11-23 12:20:22 +01:00
Martin Stein
4dadd6a437 base-hw: Read and write whole thread states.
By now there is no use case for read/write a single register
of a thread state. Thus the new syscalls 'read_thread_state' and
'write_thread_state' replace the old ones 'read_register' and
'write_register'.
2012-11-22 09:21:53 +01:00
Martin Stein
6cb89f79e3 base_hw & arm_v7: Use write-back caching.
Add 'resume_faulter' syscall that is similar to 'resume_thread', but
is called only when resuming a thread after resolving its pagefault.
This way the kernel can flush caches after resolving a pagefault. This is
because by now the MMU doesn't use caches when doing a pagetable walk.
2012-11-22 09:21:53 +01:00
Martin Stein
4723b08322 base_hw: Use TLB-specific 'struct Page_flags'.
'Page_flags' maps application-specific memory attributes
to the TLB-specific memory attributes. Thereby it avoids
functions with lots of parameters, by declaring appropriate
bitfields on a single POD value.
2012-11-22 09:21:53 +01:00
Norman Feske
959df5d46b Generalize handling of PD-session arguments
On Linux, we want to attach additional attributes to processes, i.e.,
the chroot location, the designated UID, and GID. Instead of polluting
the generic code with such Linux-specific platform details, I introduced
the new 'Native_pd_args' type, which can be customized for each
platform. The platform-dependent policy of init is factored out in the
new 'pd_args' library.

The new 'base-linux/run/lx_pd_args.run' script can be used to validate
the propagation of those attributes into core.

Note that this patch does not add the interpretation of the new UID and
PID attributes by core. This will be subject of a follow-up patch.

Related to #510.
2012-11-21 20:04:07 +01:00
Norman Feske
bcabbe2c92 Add 'Thread_base::join()'
Using the new 'join()' function, the caller can explicitly block for the
completion of the thread's 'entry()' function. The test case for this
feature can be found at 'os/src/test/thread_join'. For hybrid
Linux/Genode programs, the 'Thread_base::join()' does not map directly
to 'pthread_join'. The latter function gets already called by the
destructor of 'Thread_base'. According to the documentation, subsequent
calls of 'pthread_join' for one thread may result in undefined behaviour.
So we use a 'Genode::Lock' on this platform, which is in line with the
other platforms.

Related to #194, #501
2012-11-19 12:43:34 +01:00
Martin Stein
8d03312528 base_hw: Use board-specific 'Core_tlb'.
'Core_tlb' ensures that core never throws pagefaults,
in contrast to its base 'Tlb' that is planned to use displacement
in the future.

'Core_tlb' enables the application of differenet memory attributes
in core, according to the board specific partitioning of the physical
address space. This way it enables caching in core.
2012-11-14 16:36:51 +01:00
Martin Stein
4d2a3de0ee base_hw: Rename 'Software_tlb' 'Tlb'. 2012-11-14 16:36:51 +01:00
Martin Stein
dfcf55ff6e base_hw: Implement TLB as member of a kernel PD. 2012-11-14 16:36:51 +01:00
Martin Stein
53156de9f4 base_hw & arm: Memory attributes and light caching.
Enable caches. Core is not cached by now. This is because kernel
creates core space and doesn't know any memory attributes by now.
Cacheable pages are cached write-through without write-allocate.

Caching and write-combining is not supported for IOMEM by now.
2012-11-14 16:36:51 +01:00
Martin Stein
91c27f3f72 base: Tell a mapping wether it maps IO memory. 2012-11-14 16:36:51 +01:00
Martin Stein
cfa0a40d5e base_hw & omap4: USB HID and framebuffer driver.
Implement 'Signal_receiver::pending()'.

Provide display-subsystem MMIO.

Avoid method ambiguousness in 'Irq_context' in
'dde_linux/src/drivers/usb/signal/irq.cc'
(it derives from two list element classes when using 'base_hw').

Enables demo scenario with 'hw_panda_a2'.
2012-11-14 16:36:50 +01:00
Martin Stein
612735732a base_hw & omap4: Timer driver.
Fix bug regarding idle thread in thread scheduling in
'base-hw/src/core/kernel.cc'.

Fix regarding signal submit in signal framework in
'base-hw/src/core/kernel.cc'.
2012-11-14 16:36:50 +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
Christian Prochaska
dc205e6937 base-hw: fix compile error with GCC 4.7
Fixes #438.
2012-10-30 17:47:52 +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
Stefan Kalkowski
965ffc1df2 base-hw: increase signal session initial quota 2012-10-29 10:08:29 +01:00
Stefan Kalkowski
94ea3a0acb Move away drivers from generic base-repository
Driver definitions which are used by kernel/core in base-hw, and also by other
drivers (e.g. from the os repository) have to reside in the generic
base-repository, for instance some uart drivers. All drivers which are
interesting for one of the sites only (sp804 for timer driver, or
cortex_a9 cpu driver for base-hw) should reside in the respective repos.

Factorize cpu context out of Cortex A9 specific definitions. Moreover, there
is already a Cpu_state object containing all common ARM registers. We use
this as a base for the cpu context switching done by the base-hw kernel.
The Cpu_state class get extended by a cpu-exception field, that stores the kind
of exception raised when the corresponding context got interrupted. This
information is used not only by the base-hw kernel, but also by the TrustZone
VMM that is build currently.
2012-10-29 10:08:29 +01:00
Stefan Kalkowski
6cd0c02dcd base-hw: introduce VM session interface
The VM session interface is meant to be generic, but first will be used in the context
of TrustZone only.
2012-10-29 10:08:29 +01:00
Stefan Kalkowski
dc3d784e6d Introduce platform-specific services for core
By now all services in core where created, and registered in the generic
main routine. Although there exists already a x86-specific service (I/O ports)
there was no possibility to announce core-services for certain platforms only.
This commit introduces a hook function in the 'Platform' class, that enables
registration of platform-specific services. Moreover, the io-port service
is offered on x86 platforms only now.
2012-10-29 10:08:29 +01:00
Stefan Kalkowski
96d45c1159 Define board declarations in a more generic fashion
By naming all board declaration (previously in base/include/drivers/board) the
same way, and putting them in platform-specific include-pathes, we save additional
declaration redirection in the base-hw kernel, and in driver definitions.
2012-10-24 16:41:13 +02:00
Martin Stein
9dba710989 Enable 'signal' test on 'base_hw'. 2012-10-12 13:10:45 +02:00
Norman Feske
4a1b545770 Move 'Child' API implementation to library 2012-10-09 13:45:33 +02:00
Martin Stein
f2cfda6be6 Avoid use of address 0x0 in protection domains. 2012-10-01 11:45:47 +02:00
Alexander Boettcher
ea38aad30e Move context area definition to native_type 2012-09-24 09:17:54 +02:00
Norman Feske
83bdfea9b0 Extend Cpu_session with thread-affinity API
This patch introduces the functions 'affinity' and 'num_cpus' to the CPU
session interface. The interface extension will allow the assignment of
individual threads to CPUs. At this point, it is just a stub with no
actual platform support.
2012-09-05 10:25:04 +02:00
Norman Feske
99ad554bef Minor style fix 2012-08-22 09:51:31 +02:00
Martin Stein
ff65f6f021 Run Genode directly on hardware with 'base-hw'. 2012-08-03 12:06:37 +02:00