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ArmPkg/ArmLib/ArmV7: Fixed ArmIsMpCore() 

The function was not returning the expected value.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15850 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Olivier Martin 2014-08-20 17:57:34 +00:00 committed by oliviermartin
parent febad023bf
commit 5a539eb536
2 changed files with 8 additions and 4 deletions
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6
ArmPkg/Library/ArmLib/ArmV7/ArmLibSupportV7.S
View File

@ -38,8 +38,10 @@ ASM_PFX(ArmIsMpCore):
mrc p15,0,R0,c0,c0,5
// Get Multiprocessing extension (bit31) & U bit (bit30)
and R0, R0, #0xC0000000
// if bit30 == 0 then the processor is part of a multiprocessor system)
and R0, R0, #0x80000000
// if (bit31 == 1) && (bit30 == 0) then the processor is part of a multiprocessor system
cmp R0, #0x80000000
moveq R0, #1
movne R0, #0
bx LR
ASM_PFX(ArmEnableAsynchronousAbort):

6
ArmPkg/Library/ArmLib/ArmV7/ArmLibSupportV7.asm
View File

@ -37,8 +37,10 @@ ArmIsMpCore
mrc p15,0,R0,c0,c0,5
// Get Multiprocessing extension (bit31) & U bit (bit30)
and R0, R0, #0xC0000000
// if bit30 == 0 then the processor is part of a multiprocessor system)
and R0, R0, #0x80000000
// if (bit31 == 1) && (bit30 == 0) then the processor is part of a multiprocessor system
cmp R0, #0x80000000
moveq R0, #1
movne R0, #0
bx LR
ArmEnableAsynchronousAbort