include/asm-blackfin/cplb.h

   1 /*
   2  * File:         include/asm-blackfin/cplb.h
   3  * Based on:     include/asm-blackfin/mach-bf537/bf537.h
   4  * Author:       Robin Getz <rgetz@blackfin.uclinux.org>
   5  *
   6  * Created:      2000
   7  * Description:  Common CPLB definitions for CPLB init
   8  *
   9  * Modified:
  10  *               Copyright 2004-2007 Analog Devices Inc.
  11  *
  12  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, see the file COPYING, or write
  26  * to the Free Software Foundation, Inc.,
  27  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  28  */
  29
  30 #ifndef _CPLB_H
  31 #define _CPLB_H
  32
  33 #include <asm/blackfin.h>
  34 #include <asm/mach/anomaly.h>
  35
  36 #define SDRAM_IGENERIC    (CPLB_L1_CHBL | CPLB_USER_RD | CPLB_VALID | CPLB_PORTPRIO)
  37 #define SDRAM_IKERNEL     (SDRAM_IGENERIC | CPLB_LOCK)
  38 #define L1_IMEMORY        (               CPLB_USER_RD | CPLB_VALID | CPLB_LOCK)
  39 #define SDRAM_INON_CHBL   (               CPLB_USER_RD | CPLB_VALID)
  40
  41 /*Use the menuconfig cache policy here - CONFIG_BFIN_WT/CONFIG_BFIN_WB*/
  42
  43 #if ANOMALY_05000158
  44 #define ANOMALY_05000158_WORKAROUND             0x200
  45 #else
  46 #define ANOMALY_05000158_WORKAROUND             0x0
  47 #endif
  48
  49 #define CPLB_COMMON     (CPLB_DIRTY | CPLB_SUPV_WR | CPLB_USER_WR | CPLB_USER_RD | CPLB_VALID | ANOMALY_05000158_WORKAROUND)
  50
  51 #ifdef CONFIG_BFIN_WB         /*Write Back Policy */
  52 #define SDRAM_DGENERIC   (CPLB_L1_CHBL | CPLB_COMMON)
  53 #else                           /*Write Through */
  54 #define SDRAM_DGENERIC   (CPLB_L1_CHBL | CPLB_WT | CPLB_L1_AOW  | CPLB_COMMON)
  55 #endif
  56
  57 #define L1_DMEMORY       (CPLB_LOCK | CPLB_COMMON)
  58 #define L2_MEMORY        (CPLB_COMMON)
  59 #define SDRAM_DNON_CHBL  (CPLB_COMMON)
  60 #define SDRAM_EBIU       (CPLB_COMMON)
  61 #define SDRAM_OOPS       (CPLB_VALID | ANOMALY_05000158_WORKAROUND | CPLB_LOCK | CPLB_DIRTY)
  62
  63 #define SIZE_1K 0x00000400      /* 1K */
  64 #define SIZE_4K 0x00001000      /* 4K */
  65 #define SIZE_1M 0x00100000      /* 1M */
  66 #define SIZE_4M 0x00400000      /* 4M */
  67
  68 #define MAX_CPLBS (16 * 2)
  69
  70 #define ASYNC_MEMORY_CPLB_COVERAGE      ((ASYNC_BANK0_SIZE + ASYNC_BANK1_SIZE + \
  71                                  ASYNC_BANK2_SIZE + ASYNC_BANK3_SIZE) / SIZE_4M)
  72
  73 /*
  74 * Number of required data CPLB switchtable entries
  75 * MEMSIZE / 4 (we mostly install 4M page size CPLBs
  76 * approx 16 for smaller 1MB page size CPLBs for allignment purposes
  77 * 1 for L1 Data Memory
  78 * possibly 1 for L2 Data Memory
  79 * 1 for CONFIG_DEBUG_HUNT_FOR_ZERO
  80 * 1 for ASYNC Memory
  81 */
  82
  83
  84 #define MAX_SWITCH_D_CPLBS (((CONFIG_MEM_SIZE / 4) + 16 + 1 + 1 + 1 \
  85                                  + ASYNC_MEMORY_CPLB_COVERAGE) * 2)
  86
  87 /*
  88 * Number of required instruction CPLB switchtable entries
  89 * MEMSIZE / 4 (we mostly install 4M page size CPLBs
  90 * approx 12 for smaller 1MB page size CPLBs for allignment purposes
  91 * 1 for L1 Instruction Memory
  92 * possibly 1 for L2 Instruction Memory
  93 * 1 for CONFIG_DEBUG_HUNT_FOR_ZERO
  94 */
  95
  96 #define MAX_SWITCH_I_CPLBS (((CONFIG_MEM_SIZE / 4) + 12 + 1 + 1 + 1) * 2)
  97
  98
  99 #define CPLB_ENABLE_ICACHE_P    0
 100 #define CPLB_ENABLE_DCACHE_P    1
 101 #define CPLB_ENABLE_DCACHE2_P   2
 102 #define CPLB_ENABLE_CPLBS_P     3       /* Deprecated! */
 103 #define CPLB_ENABLE_ICPLBS_P    4
 104 #define CPLB_ENABLE_DCPLBS_P    5
 105
 106 #define CPLB_ENABLE_ICACHE      (1<<CPLB_ENABLE_ICACHE_P)
 107 #define CPLB_ENABLE_DCACHE      (1<<CPLB_ENABLE_DCACHE_P)
 108 #define CPLB_ENABLE_DCACHE2     (1<<CPLB_ENABLE_DCACHE2_P)
 109 #define CPLB_ENABLE_CPLBS       (1<<CPLB_ENABLE_CPLBS_P)
 110 #define CPLB_ENABLE_ICPLBS      (1<<CPLB_ENABLE_ICPLBS_P)
 111 #define CPLB_ENABLE_DCPLBS      (1<<CPLB_ENABLE_DCPLBS_P)
 112 #define CPLB_ENABLE_ANY_CPLBS   CPLB_ENABLE_CPLBS | \
 113                                 CPLB_ENABLE_ICPLBS | \
 114                                 CPLB_ENABLE_DCPLBS
 115
 116 #define CPLB_RELOADED           0x0000
 117 #define CPLB_NO_UNLOCKED        0x0001
 118 #define CPLB_NO_ADDR_MATCH      0x0002
 119 #define CPLB_PROT_VIOL          0x0003
 120 #define CPLB_UNKNOWN_ERR        0x0004
 121
 122 #define CPLB_DEF_CACHE          CPLB_L1_CHBL | CPLB_WT
 123 #define CPLB_CACHE_ENABLED      CPLB_L1_CHBL | CPLB_DIRTY
 124
 125 #define CPLB_I_PAGE_MGMT        CPLB_LOCK | CPLB_VALID
 126 #define CPLB_D_PAGE_MGMT        CPLB_LOCK | CPLB_ALL_ACCESS | CPLB_VALID
 127 #define CPLB_DNOCACHE           CPLB_ALL_ACCESS | CPLB_VALID
 128 #define CPLB_DDOCACHE           CPLB_DNOCACHE | CPLB_DEF_CACHE
 129 #define CPLB_INOCACHE           CPLB_USER_RD | CPLB_VALID
 130 #define CPLB_IDOCACHE           CPLB_INOCACHE | CPLB_L1_CHBL
 131
 132 #endif                          /* _CPLB_H */