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88118b133a
acpica and the Intel display driver tries to use the Intel Opregion simultaneously on Genode, which is not supported nor wanted for IO_MEM region as which it is handled. Attempts to remove the access to the region was not successful, since some SSDT table contains ACPI AML code which is executed regularly and read/write the Opregion. The patch adds support to read in a copy of the Intel Opregion done by the acpi_drv component. The copy was sufficient to make the Intel display driver working to find and lookup the Intel VBT (video bios table) information to setup all connectors on a Fujitsu U7411 docking station. Fixes #4531
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.