libreboot

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commit 0b2007d39dfd5be1f851a65c94300652884022f6
parent f1b2c4e7a545d28e7998af88bf2cab90c8a91c51
Author: Francis Rowe <info@gluglug.org.uk>
Date:   Mon, 12 Oct 2015 23:50:47 +0100

docs/hcl/c201.html: note about (lack of) CPU microcode

Diffstat:
docs/hcl/c201.html | 17+++++++++++++++++
1 file changed, 17 insertions(+), 0 deletions(-)

diff --git a/docs/hcl/c201.html b/docs/hcl/c201.html @@ -51,6 +51,7 @@ <li><a href="#videoblobs">Caution: Video acceleration requires a blob. Do not install it. Use software rendering.</a></li> <li><a href="#wifiblobs">Caution: WiFi acceleration requires a blob. Do not install it. Use a USB dongle.</a></li> <li><a href="#ec">EC firmware is free software!</a></li> + <li><a href="#microcode">No microcode!</a></li> <li><a href="#os">Replace ChromeOS immediately!</a></li> <li><a href="#depthcharge">Depthcharge payload</a></li> </ul> @@ -153,6 +154,22 @@ (if you do without the video/wifi blobs) be more free when using one of these laptops. </p> </div> + + <div class="section"> + <h1 id="microcode">No microcode!</h1> + <p> + Unlike x86 (e.g. Intel/AMD) CPUs, ARM CPUs do not use microcode, not even built in. + On the Intel/AMD based libreboot systems, there is still microcode in the CPU + (not considered problematic by the FSF, since it's part of the hardware), but we + exclude microcode updates, which are proprietary + </p> + <p> + On ARM CPUs, the instruction set is implemented in circuitry, without microcode. + </p> + <p> + <a href="#pagetop">Back to top of page</a>. + </p> + </div> <div class="section"> <h1 id="os">Replace ChromeOS immediately!</h1>