ARM Technical Support Knowledge Articles

PFQBC (PREFETCH QUEUE) ENABLE IN STR91X.S

Applies to: MCBSTR9 Evaluation Board

Answer


Information in this article applies to:


QUESTION

It appears that the Prefetch Queue is not enabled in the startup file STR91x.s. Is this correct and what do I need to change on the STR91x.S file?

ANSWER

Rev. D devices enable the Prefetch Queue by default. For earlier revisions, you may enable the Prefetch Queue (PFQ/BC) by changing the definition of SCU_SCR0_Val to the following in the STR91x.S file:

SCU_SCR0_Val    EQU     0x00000197

Setting this value to 0x00000196 disables the Prefetch Queue.

MORE INFORMATION

Article last edited on: 2006-11-15 09:04:40

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