Parameters: IU

[openpowerwtf]

These parameters do pass initial sim. Determine if IBUFF_DEPTH=4 can/should be supported, and document.

Also, prefetch enabled with different values should be tested.

`define  IBUFF_DEPTH 6           //wtf 4 fails compile in iuq_ibuf equations using -5

`define  BUILD_PFETCH 0  		   // 1=> include pfetch in the build, 0=> build without pfetch
`define  PF_IAR_BITS 12		      // number of IAR bits used by prefetch
`define  PF_IFAR_WIDTH 12
`define  PFETCH_INITIAL_DEPTH 0	// the initial value for the SPR that determines how many lines to prefetch
`define  PFETCH_Q_SIZE_ENC 3		// number of bits to address queue size (3 => 8 entries, 4 => 16 entries)
`define  PFETCH_Q_SIZE 8		   // number of entries