Gentoo Archives: gentoo-dev

From: Duncan <1i5t5.duncan@×××.net>
To: gentoo-dev@l.g.o
Subject: [gentoo-dev] Re: Killing UEFI Secure Boot
Date: Fri, 22 Jun 2012 05:03:42
Message-Id: pan.2012.06.22.05.02.14@cox.net
In Reply to: Re: [gentoo-dev] Re: Killing UEFI Secure Boot by Richard Yao
Richard Yao posted on Thu, 21 Jun 2012 05:33:22 -0400 as excerpted:

> A firmware replacement for the BIOS does not need to worry about floppy > drives, hard drives, optical drives, usb devices, isa devices, pci > devices and pci express drives, etcetera, because those live on buses, > which the kernel can detect.
But you have to be able to load the kernel first, before it can do all that detection. And to load it, you need to be able to read the device it's located on, which in a modern x86 system (as contrasted with mips/ arm) generally means detection of what's there, some mechanism to choose which available devices to check for a kernel or boot loader or whatever, and some way to dynamically configure it, since many devices are simply (device info probable) bricks until configured, these days. Sure, you can boot directly to a Linux kernel /as/ your firmware (as Ian S suggested), but then you're back to hard-configuring it in ordered to do so, thus losing all that extra flexibility that's part of what makes x86 different. Which was the question that I was addressing. -- Duncan - List replies preferred. No HTML msgs. "Every nonfree program has a lord, a master -- and if you use the program, he is your master." Richard Stallman

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Re: [gentoo-dev] Re: Killing UEFI Secure Boot Richard Yao <ryao@g.o>