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The Platform Initialization Specification (PI Specification) is a specification published by the Unified EFI Forum that describes the internal interfaces between different parts of computer platform firmware. [1] This allows for more interoperability between firmware components from different sources.
Added a UEFI bootloader, NVMe driver, nouveau driver for Nvidia GPUs, support for more ARM boards including the Raspberry Pi 3; 7.0 [84] [85] 8 October 2015 Add accelerated support for modern Intel and Radeon devices on x86 through a port of the Linux 3.15 DRM/KMS code. Lua kernel scripting
Memory-mapped I/O is preferred in IA-32 and x86-64 based architectures because the instructions that perform port-based I/O are limited to one register: EAX, AX, and AL are the only registers that data can be moved into or out of, and either a byte-sized immediate value in the instruction or a value in register DX determines which port is the source or destination port of the transfer.
Version 6.5 adds support for Secure Boot. [150] [151] VirtualBox has implemented UEFI since 3.1, [152] but is limited to Unix/Linux operating systems and Windows 8 and later (does not work with Windows Vista x64 and Windows 7 x64). [153] [154] QEMU/KVM can be used with the Open Virtual Machine Firmware (OVMF) provided by TianoCore. [155]
The first release of DragonFly BSD with NVMe support is version 4.6. [73] FreeBSD Intel sponsored a NVM Express driver for FreeBSD's head and stable/9 branches. [74] [75] The nvd(4) and nvme(4) drivers are included in the GENERIC kernel configuration by default since FreeBSD version 10.2 in 2015. [76] Genode
The Raspberry Pi 5 uses a 64-bit 2.4 GHz quad-core ARM Cortex-A76 processor. The Raspberry Pi 5 uses the Broadcom BCM2712 SoC, which is a chip designed in collaboration with Raspberry Pi. The SoC features a quad-core ARM Cortex-A76 processor clocked at 2.4 GHz, alongside a VideoCore VII GPU clocked at 800 MHz.
If there are size constraints, U-Boot may be split into two stages: the platform would load a small SPL (Secondary Program Loader), which is a stripped-down version of U-Boot, and the SPL would do some initial hardware configuration (e.g. DRAM initialization using CPU cache as RAM) and load the larger, fully featured version of U-Boot. [3] [4 ...
Raspberry Pi OS is a Unix-like operating system based on the Debian Linux distribution for the Raspberry Pi family of compact single-board computers. Raspbian was developed independently in 2012, became the primary operating system for these boards since 2013, was originally optimized for the Raspberry Pi 1 and distributed by the Raspberry Pi Foundation. [3]