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Core uses an instance of 'Pd_session_component' as a representative for RAM/cap quota accounts used whenever session resources are donated to core's services. All other facets of 'Pd_sesson_component' remain unused. Core's instance of 'Pd_session_component' is hosted at 'Core_env'. Upon its construction, all unused facets of 'Pd_session_component' are initialized by dummy arguments in 'Core_env'. To overcome the need for dummy arguments, this patch splits the accounting part of the PD-session interface into a separate 'Pd_account' interface. This gives us the prospect of narrowing core's current use of 'Pd_session_component' by 'Pd_account', alleviating dead code and the need for any dummy arguments. Issue #5408
This is the generic Genode base system, which consists of two parts: :_Core_: is the root of the Genode component tree. It provides abstractions for the lowest-level hardware resources such as RAM, ROM, CPU, and device access. All generic parts of core can be found here. For kernel-specific parts, refer to the appropriate 'base-<kernel>' directory. :_Base libraries and interfaces: that are used by each Genode component to interact with other components. This is the glue that holds everything together. Depending on the used kernel, core may export information about the hardware platform as a ROM called 'platform_info'. For example, if the ACPI RSDT and XSDT physical pointer are reported by the used kernel and/or bootloader, core provides this information in the ROM as follows. !<platform_info> ! <acpi revision="2" rsdt="0x1fe93074" xsdt="0x1fe930e8"/> ! <boot> ! <framebuffer phys="0x7300000" width="1024" height="768" bpp="32"/> ! </boot> !</platform_info> If the graphics device is initialised and can be directly used by a framebuffer driver, core provides the physical pointer to the framebuffer, the resolution, and color depth in bits.