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ceaa02230e
With the update to sel4 and the gcc 12, assembly instructions are generated and used, like POPCNT. The instruction is available on our native hardware, but not emulated by the default cpu model necessarily, which leads to undefined opcode exceptions (Qemu 4.2.1 && seL4). Additionally, the features of the default Qemu cpu model may vary between Qemu releases and makes it harder to correlate effects. |
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| README | ||
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.