During acceptance testing of new 64-bit RISC-V servers, you are asked to document the default multi-stage boot flow used by most Linux distributions that rely on U-Boot. Which of the following sequences correctly lists the components that run, in the correct order, before the Linux kernel takes control on a typical RISC-V system?
A standard RISC-V boot process starts with the tiny U-Boot SPL, which performs minimal hardware initialization. The SPL then loads and passes control to an OpenSBI firmware payload that implements the Supervisor Binary Interface required by RISC-V Linux. After platform firmware duties are complete, OpenSBI hands off to the full U-Boot (often called "U-Boot proper") that provides the normal boot-loader features such as device-tree fixes and kernel loading. Finally, U-Boot transfers execution to the Linux kernel. The other answer options either place the components in the wrong order or insert GRUB/UEFI stages that are not part of the default U-Boot-based RISC-V flow.
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What is U-Boot SPL, and why is it important in the RISC-V boot process?
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What is the role of U-Boot proper in a typical Linux boot sequence?
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CompTIA Linux+ XK0-006 (V8)
System Management
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