genode-ehmry/repos/base
Norman Feske f278024e44 core: prevent transfer of static PD session quota
This patch makes sure that the initial PD session limit (as defined by
the client-provided session quota) is preserved over the entire lifetime
of the PD session. That means, it cannot be transferred to other PD
sessions. Otherwise, it may be impossive to hand back all the static
session quota to the PD-session client at session-destruction time
because parts of the initial quota would no longer belong to the
session.

Note that the initial limit can still be used for allocations within the
PD session as those allocations are automatically reverted at
session-destruction time.
2017-06-29 11:59:52 +02:00
..
etc Let default tools.conf cover each architecture 2016-07-15 11:38:26 +02:00
include riscv: ISA-1.9.1 and GCC-6.3.0 adaptions 2017-05-31 13:16:24 +02:00
lib base: use 'Ram_allocator' as stack-area back end 2017-05-31 13:16:13 +02:00
mk os: removal of deprecated os/config.h (fix #2431) 2017-05-31 13:16:22 +02:00
recipes depot: update recipe hashes 2017-05-31 16:18:01 +02:00
run acpi_drv: use platform_info for rsdt/xsdt lookup 2017-06-29 11:59:50 +02:00
src core: prevent transfer of static PD session quota 2017-06-29 11:59:52 +02:00
README core: add information about infos provided by core 2017-06-29 11:59:52 +02:00

This is generic part of the Genode implementation. It consists of two parts:

:_Core_: is the ultimate root of the Genode application tree
  and provides abstractions for the lowest-level hardware resources
  such as RAM, ROM, CPU, and generic device access. All generic parts of Core
  can be found here - for system-specific implementations refer to the
  appropriate 'base-<system>' directory.

:_Base libraries and protocols_: that are used by each Genode component
  to interact with other components. This is the glue that holds everything
  together.

_Core_ may export information about the hardware platform by an ROM
called 'platform_info'. Depending on the platform, e.g. ARM or x86 or riscv,
and depending on the boot mode and boot loader and kernel, some nodes may not
be populated.

!<platform_info>
! <acpi revision="2" rsdt="0x1fe93074" xsdt="0x1fe930e8"/>
! <boot>
!   <framebuffer phys="0x7300000" width="1024" height="768" bpp="32"/>
! </boot>
!</platform_info>

If the ACPI RSDT and XSDT physical pointer is reported by the used kernel
and/or bootloader, _Core_ may provide this information by the ROM.

If the graphic device is initialised and can be directly used by a framebuffer
driver, _Core_ may provide the physical pointer to the framebuffer, the
resolution and color depth in bits.