/**
 * @file
 *
 * @ingroup mpc55xx
 *
 * @brief Register definitions.
 */

/*
 * Copyright (c) 2008-2011 embedded brains GmbH.  All rights reserved.
 *
 *  embedded brains GmbH
 *  Obere Lagerstr. 30
 *  82178 Puchheim
 *  Germany
 *  <rtems@embedded-brains.de>
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rtems.com/license/LICENSE.
 */

#ifndef LIBCPU_POWERPC_MPC55XX_REG_DEFS_H
#define LIBCPU_POWERPC_MPC55XX_REG_DEFS_H

#include <bspopts.h>

#if MPC55XX_CHIP_FAMILY == 551
  #define FLASH_BIUCR   0xFFFF801C
#else
  #define FLASH_BIUCR 0xC3F8801C
#endif

/*
 * Definitions for FLASH_BIUCR (Flash BIU Control Register)
 */

/* Fields for Flash Bus Interface Control */
/* Fields for Prefetch Control (MnPFE Master n Prefetch Enable) */

/* Fields for M3PFE (Master 3 (EBI) prefetch enable bit [12]) */
#define FLASH_BUICR_EBI_PREFTCH 0x00080000

/* Fields for M2PFE (Master 2 (eDMA) prefetch enable bit [13]) */
#define FLASH_BUICR_EDMA_PREFTCH 0x00040000

/* Fields for M1PFE (Master 1 (Nexus) prefetch enable bit [14]) */
#define FLASH_BUICR_NEX_PREFTCH 0x00020000

/* Fields for M0PFE (Master 0 (e200z core) prefetch enable bit [15]) */
#define FLASH_BUICR_CPU_PREFTCH 0x00010000

/* Fields for APC (access pipelining control bits [16:18]) */
#define FLASH_BUICR_APC_1 0x00002000
#define FLASH_BUICR_APC_2 0x00004000
#define FLASH_BUICR_APC_3 0x00006000
#define FLASH_BUICR_APC_4 0x00008000
#define FLASH_BUICR_APC_5 0x0000A000
#define FLASH_BUICR_APC_6 0x0000C000
#define FLASH_BUICR_APC_NO 0x0000E000

/* Fields for WWSC (write wait state control bits [19:20]) */
#define FLASH_BUICR_WWSC_1 0x00000800
#define FLASH_BUICR_WWSC_2 0x00001000
#define FLASH_BUICR_WWSC_3 0x00001800

/* Fields for RWSC (read wait state control bits [21:23]) */
#define FLASH_BUICR_RWSC_0 0x00000000
#define FLASH_BUICR_RWSC_1 0x00000100
#define FLASH_BUICR_RWSC_2 0x00000200
#define FLASH_BUICR_RWSC_3 0x00000300
#define FLASH_BUICR_RWSC_4 0x00000400
#define FLASH_BUICR_RWSC_5 0x00000500
#define FLASH_BUICR_RWSC_6 0x00000600
#define FLASH_BUICR_RWSC_7 0x00000700

/* Fields for DPFEN (data prefetch enable bits [24:25]) */
#define FLASH_BUICR_DPFEN_0 0x00000000
#define FLASH_BUICR_DPFEN_1 0x00000040
#define FLASH_BUICR_DPFEN_3 0x000000C0

/* Fields for IPFEN (instruction prefetch enable bits [26:27]) */
#define FLASH_BUICR_IPFEN_0 0x00000000
#define FLASH_BUICR_IPFEN_1 0x00000010
#define FLASH_BUICR_IPFEN_3 0x00000030

/* Fields for PFLIM (additional line prefetch (limit) bits [28:30]) */
#define FLASH_BUICR_PFLIM_0 0x00000000
#define FLASH_BUICR_PFLIM_1 0x00000002
#define FLASH_BUICR_PFLIM_2 0x00000004
#define FLASH_BUICR_PFLIM_3 0x00000006
#define FLASH_BUICR_PFLIM_4 0x00000008
#define FLASH_BUICR_PFLIM_5 0x0000000A
#define FLASH_BUICR_PFLIM_6 0x0000000C

/* Fields for BFEN (enable line read buffer hits bit [31]) */
#define FLASH_BUICR_BFEN 0x00000001

#endif /* LIBCPU_POWERPC_MPC55XX_REG_DEFS_H */