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This patch adjusts the implementation of the base library and core such that the code no longer relies on deprecated APIs except for very few cases, mainly to keep those deprecated APIs in tact for now. The most prominent changes are: - Removing the use of base/printf.h - Removing of the log backend for printf. The 'Console' with the format-string parser is still there along with 'snprintf.h' because the latter is still used at a few places, most prominently the 'Connection' classes. - Removing the notion of a RAM session, which does not exist in Genode anymore. Still the types were preserved (by typedefs to PD session) to keep up compatibility. But this transition should come to an end now. - Slight rennovation of core's tracing service, e.g., the use of an Attached_dataspace as the Argument_buffer. - Reducing the reliance on global accessors like deprecated_env() or core_env(). Still there is a longish way to go to eliminate all such calls. A useful pattern (or at least a stop-gap solution) is to pass the 'Env' to the individual compilation units via init functions. - Avoiding the use of the old 'Child_policy::resolve_session_request' interface that returned a 'Service' instead of a 'Route'. Issue #1987 |
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| README | ||
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.