Changeset db64c093 in mainline


Ignore:
Timestamp:
2005-09-04T19:52:22Z (19 years ago)
Author:
Jakub Jermar <jakub@…>
Branches:
lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
Children:
824553ed
Parents:
f9e5422
Message:

AP cpus are not supposed to touch A20 for this bit is enabled by the BSP cpu.

File:
1 edited

Legend:

Unmodified
Added
Removed

  • arch/ia32/src/smp/ap.S

    rf9e5422 rdb64c093  
    7070        call map_kernel                                 # map kernel and turn paging on
    7171       
    72         movb $0xd1, %al                                 # enable A20 using the keyboard controller
    73         outb %al, $0x64
    74         movb $0xdf, %al
    75         outb %al, $0x60
    76 
    7772        jmpl $KTEXT, $main_ap
    7873
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