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Re: [Libreboot] R400: Using GPIO33 to enable reflash

From: Denis 'GNUtoo' Carikli
Subject: Re: [Libreboot] R400: Using GPIO33 to enable reflash
Date: Wed, 20 Apr 2016 14:41:25 +0200

On Fri, 1 Apr 2016 21:54:41 +0000 (UTC)
Joerg Albert <address@hidden> wrote:

> AFAIK the protected range restrictions mentioned in the link above are
> implemented in the Lenovo BIOS. Does libreboot impose them as well
> based on the bits in the flash descriptor table?
Theses are two different things:
- The protected range registers are registers set by the boot
  fimrware(here the Lenovo BIOS). In the case of the X200T a PR
  register protects what seem to be the BIOS boot block.
- The flash descriptor bits are set, in the flash descriptor. What the
  boot fimrware doesn't affect such bits.


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