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  1. /*
  2.  * Copyright (C) 2001-2004 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #ifndef __CP0_H__
  30. #define __CP0_H__
  31.  
  32. #include <arch/types.h>
  33.  
  34. #define cp0_status_ie_enabled_bit   (1<<0)
  35. #define cp0_status_exl_exception_bit    (1<<1)
  36. #define cp0_status_erl_error_bit    (1<<2)
  37. #define cp0_status_bev_bootstrap_bit    (1<<22)
  38. #define cp0_status_um_bit           (1<<4)
  39.  
  40. #define cp0_status_im7_shift        15
  41. /*
  42.  * Magic value for use in msim.
  43.  * On AMD Duron 800Mhz, this roughly seems like one us.
  44.  */
  45. #define cp0_compare_value       10000
  46.  
  47. extern  __u32 cp0_index_read(void);
  48. extern void cp0_idnex_write(__u32 val);
  49.  
  50. extern __u32 cp0_random_read(void);
  51.  
  52. extern __u32 cp0_entry_lo0_read(void);
  53. extern void cp0_entry_lo0_write(__u32 val);
  54.  
  55. extern __u32 cp0_entry_lo1_read(void);
  56. extern void cp0_entry_lo1_write(__u32 val);
  57.  
  58. extern __u32 cp0_context_read(void);
  59. extern void cp0_context_write(__u32 val);
  60.  
  61. extern __u32 cp0_pagemask_read(void);
  62. extern void cp0_pagemask_write(__u32 val);
  63.  
  64. extern __u32 cp0_wired_read(void);
  65. extern void cp0_wired_write(__u32 val);
  66.  
  67. extern __u32 cp0_badvaddr_read(void);
  68.  
  69. extern volatile __u32 cp0_count_read(void);
  70. extern void cp0_count_write(__u32 val);
  71.  
  72. extern volatile __u32 cp0_entry_hi_read(void);
  73. extern void cp0_entry_hi_write(__u32 val);
  74.  
  75. extern volatile __u32 cp0_compare_read(void);
  76. extern void cp0_compare_write(__u32 val);
  77.  
  78. extern __u32 cp0_status_read(void);
  79. extern void cp0_status_write(__u32 val);
  80.  
  81. extern __u32 cp0_cause_read(void);
  82. extern void cp0_cause_write(__u32 val);
  83.  
  84. extern __u32 cp0_epc_read(void);
  85. extern void cp0_epc_write(__u32 val);
  86.  
  87. extern __u32 cp0_prid_read(void);
  88.  
  89. extern void tlbp(void);
  90. extern void tlbr(void);
  91. extern void tlbwi(void);
  92. extern void tlbwr(void);
  93.  
  94. #endif
  95.