UEFI boot是什么

UEFI（Unified Extensible Firmware Interface）是一种新的计算机固件接口标准，它取代了传统的 BIOS（Basic Input/Output System）固件接口。UEFI 是一种更加现代化、高效、灵活的固件接口，它可以提供更好的系统启动、硬件初始化、系统管理等功能。

UEFI Boot 是指使用 UEFI 固件接口启动计算机，与传统的 BIOS 启动方式不同。UEFI Boot 可以带来以下优势：

1. 启动速度更快：UEFI Boot 可以在启动时并行加载多个驱动程序，从而加快启动速度。

2. 支持更大的硬盘容量：UEFI Boot 可以支持更大的硬盘容量，可以使用 GPT（GUID Partition Table）分区格式，支持最大 9.4 ZB 的存储容量。

3. 支持更多的操作系统：UEFI Boot 支持更多的操作系统，包括 Windows 8、Windows 10、Linux 等操作系统。

4. 支持更多的硬件设备：UEFI Boot 支持更多的硬件设备，包括 USB 3.0、NVMe SSD、显卡等。

总之，UEFI Boot 是一种更为先进、高效、灵活的系统启动方式，可以提供更好的用户体验和更好的系统性能。

相关问题

uefi boot vxworks

UEFI （统一固件接口）是一种新一代电脑固件标准，提供了更强大和灵活的引导和操作系统加载机制。VxWorks 是一种实时操作系统用于嵌入式系统开发。UEFI Boot VxWorks 指的是将 VxWorks 实时操作系统作为引导加载程序来使用。

使用 UEFI Boot VxWorks，我们可以实现更高效和可靠的引导过程。UEFI 提供了一个功能丰富的界面，能够以图形方式显示菜单供用户选择启动项。通过 UEFI Boot VxWorks，我们可以选择加载 VxWorks 实时操作系统作为主引导程序。

VxWorks 是一个可靠的实时操作系统，广泛用于嵌入式系统开发。它具有高性能和可扩展的特点，提供了多任务处理、实时性和可靠性保证。使用 VxWorks 可以实现对硬件的低级控制和管理，支持多种通信协议和设备驱动。

通过将 VxWorks 作为引导加载程序使用，我们可以在启动时加载 VxWorks 内核，并运行 VxWorks 实时操作系统。这样可以实现高效的实时任务管理和硬件控制，满足嵌入式系统的实时性和可靠性要求。

总而言之，UEFI Boot VxWorks 可以提供更强大和灵活的引导和操作系统加载机制，并结合 VxWorks 实时操作系统的特性，实现高效、可靠的嵌入式系统开发。

uefi https boot

### UEFI HTTPS Boot Configuration and Secure Boot Setup

In environments supporting Unified Extensible Firmware Interface (UEFI), configuring systems to perform an HTTPS boot involves setting up network interfaces securely so that the system can fetch boot-related files over a secure connection. The UEFI specification outlines mechanisms for this process through its defined boot manager functionality[^1]. For ensuring security during such operations, especially when dealing with secure boot settings, verification processes are critical.

#### Network Stack Initialization

To enable HTTPS booting within a UEFI environment, initializing the necessary network stack components is essential. This includes DHCP client initialization for obtaining IP addresses automatically from a server on the local network:

// Initialize DHCP Client in UEFI Shell Script
Dhcp4->Configure (& DhcpConfig);

Once networking has been established successfully, transitioning towards establishing a secure channel using TLS/SSL protocols becomes feasible.

#### Configuring Secure Boot Settings

Secure boot relies upon pre-installed public keys stored either in NVRAM or as compiled-in defaults inside the firmware itself. These keys serve to authenticate subsequent stages like bootloader images before execution begins[^3]:

- **Enabling Secure Boot**: Through BIOS/UEFI interface options.

- **Managing Keys**: Adding/removing trusted certificates via tools provided by motherboard manufacturers or directly manipulating variables accessible under `/sys/firmware/efi/vars`.

For platforms based around ARM architecture, such as those utilizing RK3399 SoCs where specific versions of U-Boot have been ported[^2], additional considerations may apply regarding compatibility between chosen bootloaders and hardware-specific features.

#### Performing HTTPS Boot

With both network connectivity assured along with appropriate secure boot configurations applied, initiating an actual HTTPS-based boot operation typically requires specifying URLs pointing toward desired kernel/initrd pairs alongside any required parameters passed at runtime:

# Example command line arguments for loading remote resources over HTTPS
fs0:\> chainload https://example.com/path/to/vmlinuz initrd=https://example.com/path/to/initramfs.img root=LABEL=rootfs ro quiet splash ---

This approach leverages built-in support found within modern EFI implementations while adhering strictly to best practices concerning data integrity checks throughout each phase transition leading up until full operating system handoff occurs.