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Old 06-10-2015, 04:50 AM   #1
enter88
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Registered: May 2015
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Smile BIOS-provided physical addresses map


i have a question relate to "BIOS-provided physical addresses map". Please help me.

The physical addresses map that is built by BIOS is only for RAM or all of peripheral and RAM?

For Ex:
Start End Type
------------------------------
0x00000000 0x0009ffff Usable
0x000f0000 0x000fffff Reserved
0x00100000 0x07feffff Usable
0x07ff0000 0x07ff2fff ACPI data
0x07ff3000 0x07ffffff ACPI NVS
0xffff0000 0xffffffff Reserved

Thank you so much!
 
Old 06-10-2015, 03:05 PM   #2
js404
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Registered: Jun 2015
Posts: 3

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The int 0x15 eax=0xE820 call is the bios function which linux prefers when detecting memory, and it only returns a map of ram. I'm not certain about any of the other memory-detection bios routines.
 
  


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