Messages in this thread | | | Date | Thu, 31 Aug 2000 11:32:21 -0500 | From | Timur Tabi <> | Subject | Re: Reserving a (large) memory block |
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** Reply to message from coder@kanga.nu on Thu, 31 Aug 2000 08:57:20 -0700
> Now the device behaves just like memory to the BIOS during POST > etc, and is in fact, exactly memory if no device drivers are loaded. > If a device driver is loaded and it detects one or more of these > devices then they and their memory ranges become obviously special. > Now, we can detect the devices and where their address ranges are > via the SMBUS and some careful probing so we know what we are trying > to grab. The problem is just telling the rest of the kernel that in > a clean VM&heap-happy manner.
How do you know what SMBUS address to use? Probing the SMBUS looking for devices has a tendency to lock the SMBUS and require a complete power down to restore.
-- Timur Tabi - ttabi@interactivesi.com Interactive Silicon - http://www.interactivesi.com
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