source: rtems/c/src/exec/score/cpu/i960/rtems/score/i960.h @ afd63b7

4.104.114.84.95
Last change on this file since afd63b7 was afd63b7, checked in by Joel Sherrill <joel.sherrill@…>, on 06/13/00 at 22:57:19

Added crude i960ka support.
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File size: 18.1 KB
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[7908ba5b]1/*  i960.h
2 *
3 *  This include file contains information pertaining to the Intel
4 *  i960 processor family.
5 *
[08311cc3]6 *  COPYRIGHT (c) 1989-1999.
[7908ba5b]7 *  On-Line Applications Research Corporation (OAR).
8 *
9 *  The license and distribution terms for this file may be
10 *  found in the file LICENSE in this distribution or at
11 *  http://www.OARcorp.com/rtems/license.html.
12 *
13 *  $Id$
14 */
15
16#ifndef __i960_h
17#define __i960_h
18
19#ifdef __cplusplus
20extern "C" {
21#endif
22
23/*
24 *  This file contains the information required to build
25 *  RTEMS for a particular member of the Intel i960
26 *  family.  It does this by setting variables to indicate
27 *  which implementation dependent features are present
28 *  in a particular member of the family.
29 *
[e8367362]30 *  NOTE: For now i960 support is for models without an FPU.
31 *        The stubs for FP routines are in  place so only need to be filled in.
32 *
33 *  NOTE: RTEMS defines a canonical name for each cpu model.
[7908ba5b]34 */
35
[df49c60]36#if defined(rtems_multilib)
37/*
38 *  Figure out all CPU Model Feature Flags based upon compiler
39 *  predefines.
40 */
41
42#define CPU_MODEL_NAME  "rtems_multilib"
43#define I960_HAS_FPU 0
44#define I960_CPU_ALIGNMENT 4
45#define I960_SOFT_RESET_COMMAND 0x30000
46
47#elif defined(__i960CA__) || defined(__i960_CA__) || defined(__i960CA)
[7908ba5b]48
49#define CPU_MODEL_NAME  "i960ca"
[d392168]50#define __RTEMS_I960CA__
[7908ba5b]51
[afd63b7]52#elif defined(__i960KA__)
53#define CPU_MODEL_NAME  "i960ka"
54
[e8367362]55#elif defined(__i960HA__) || defined(__i960_HA__) || defined(__i960HA)
[c2463d9]56
57#define CPU_MODEL_NAME  "i960ha"
[e8367362]58#define __RTEMS_I960HA__
[702c5f5]59
60#elif defined(__i960RP__)
61
62#include <i960RP.h>
63#define CPU_MODEL_NAME  "i960rp"
64#define __RTEMS_I960RP__
65#define I960_CPU_ALIGNMENT 8
66#define I960_SOFT_RESET_COMMAND 0x300
[c2463d9]67
[7908ba5b]68#else
69
70#error "Unsupported CPU Model"
71
72#endif
73
[702c5f5]74/*
75 *  Now default some CPU model variation parameters
76 */
77
78#ifndef I960_HAS_FPU
79#define I960_HAS_FPU 0
80#endif
81
82#ifndef I960_CPU_ALIGNMENT
83#define I960_CPU_ALIGNMENT 4
84#endif
85
86#ifndef I960_SOFT_RESET_COMMAND
87#define I960_SOFT_RESET_COMMAND 0x30000
88#endif
89
[7908ba5b]90/*
91 *  Define the name of the CPU family.
92 */
93
94#define CPU_NAME "Intel i960"
95
96#ifndef ASM
97
98/*
99 * XXX    should have an ifdef here and have stuff for the other
100 * XXX    family members...
101 */
102 
[e8367362]103#if defined(__RTEMS_I960CA__)
[702c5f5]104/*
105 *  Now default some CPU model variation parameters
106 */
107
108#ifndef I960_HAS_FPU
109#define I960_HAS_FPU 0
110#endif
111
112#ifndef I960_CPU_ALIGNMENT
113#define I960_CPU_ALIGNMENT 4
114#endif
115
[7908ba5b]116 
117/* i960CA control structures */
118 
119/* Intel i960CA Control Table */
120 
121typedef struct {
122                            /* Control Group 0 */
123  unsigned int ipb0;              /* IP breakpoint 0 */
124  unsigned int ipb1;              /* IP breakpoint 1 */
125  unsigned int dab0;              /* data address breakpoint 0 */
126  unsigned int dab1;              /* data address breakpoint 1 */
127                            /* Control Group 1 */
128  unsigned int imap0;             /* interrupt map 0 */
129  unsigned int imap1;             /* interrupt map 1 */
130  unsigned int imap2;             /* interrupt map 2 */
131  unsigned int icon;              /* interrupt control */
132                            /* Control Group 2 */
133  unsigned int mcon0;             /* memory region 0 configuration */
134  unsigned int mcon1;             /* memory region 1 configuration */
135  unsigned int mcon2;             /* memory region 2 configuration */
136  unsigned int mcon3;             /* memory region 3 configuration */
137                            /* Control Group 3 */
138  unsigned int mcon4;             /* memory region 4 configuration */
139  unsigned int mcon5;             /* memory region 5 configuration */
140  unsigned int mcon6;             /* memory region 6 configuration */
141  unsigned int mcon7;             /* memory region 7 configuration */
142                            /* Control Group 4 */
143  unsigned int mcon8;             /* memory region 8 configuration */
144  unsigned int mcon9;             /* memory region 9 configuration */
145  unsigned int mcon10;            /* memory region 10 configuration */
146  unsigned int mcon11;            /* memory region 11 configuration */
147                            /* Control Group 5 */
148  unsigned int mcon12;            /* memory region 12 configuration */
149  unsigned int mcon13;            /* memory region 13 configuration */
150  unsigned int mcon14;            /* memory region 14 configuration */
151  unsigned int mcon15;            /* memory region 15 configuration */
152                            /* Control Group 6 */
[c2463d9]153  unsigned int reserved;          /* reserved */
[7908ba5b]154  unsigned int bpcon;             /* breakpoint control */
155  unsigned int tc;                /* trace control */
156  unsigned int bcon;              /* bus configuration control */
157}   i960ca_control_table;
158 
159/* Intel i960CA Processor Control Block */
160 
161typedef struct {
162  unsigned int    *fault_tbl;     /* fault table base address */
163  i960ca_control_table
164                  *control_tbl;   /* control table base address */
165  unsigned int     initial_ac;    /* AC register initial value */
166  unsigned int     fault_config;  /* fault configuration word */
167  void           **intr_tbl;      /* interrupt table base address */
168  void            *sys_proc_tbl;  /* system procedure table
169                                     base address */
170  unsigned int     reserved;      /* reserved */
171  unsigned int    *intr_stack;    /* interrupt stack pointer */
172  unsigned int     ins_cache_cfg; /* instruction cache
173                                     configuration word */
174  unsigned int     reg_cache_cfg; /* register cache configuration word */
175}   i960ca_PRCB;
[c2463d9]176
177typedef i960ca_control_table i960_control_table;
178typedef i960ca_PRCB i960_PRCB;
179
[e8367362]180#elif defined(__RTEMS_I960HA__)
[c2463d9]181
182/* i960HA control structures */
183
184/* Intel i960HA Control Table */
185
186typedef struct {
187                            /* Control Group 0 */
188  unsigned int ipb0;              /* IP breakpoint 0 */
189  unsigned int ipb1;              /* IP breakpoint 1 */
190  unsigned int dab0;              /* data address breakpoint 0 */
191  unsigned int dab1;              /* data address breakpoint 1 */
192                            /* Control Group 1 */
193  unsigned int imap0;             /* interrupt map 0 */
194  unsigned int imap1;             /* interrupt map 1 */
195  unsigned int imap2;             /* interrupt map 2 */
196  unsigned int icon;              /* interrupt control */
197                            /* Control Group 2 */
198  unsigned int mcon0;             /* memory region 0 configuration */
199  unsigned int mcon1;             /* memory region 1 configuration */
200  unsigned int mcon2;             /* memory region 2 configuration */
201  unsigned int mcon3;             /* memory region 3 configuration */
202                            /* Control Group 3 */
203  unsigned int mcon4;             /* memory region 4 configuration */
204  unsigned int mcon5;             /* memory region 5 configuration */
205  unsigned int mcon6;             /* memory region 6 configuration */
206  unsigned int mcon7;             /* memory region 7 configuration */
207                            /* Control Group 4 */
208  unsigned int mcon8;             /* memory region 8 configuration */
209  unsigned int mcon9;             /* memory region 9 configuration */
210  unsigned int mcon10;            /* memory region 10 configuration */
211  unsigned int mcon11;            /* memory region 11 configuration */
212                            /* Control Group 5 */
213  unsigned int mcon12;            /* memory region 12 configuration */
214  unsigned int mcon13;            /* memory region 13 configuration */
215  unsigned int mcon14;            /* memory region 14 configuration */
216  unsigned int mcon15;            /* memory region 15 configuration */
217                            /* Control Group 6 */
218  unsigned int reserved;          /* reserved */
219  unsigned int bpcon;             /* breakpoint control */
220  unsigned int tc;                /* trace control */
221  unsigned int bcon;              /* bus configuration control */
222}   i960ha_control_table;
223
224/* Intel i960HA Processor Control Block */
225
226typedef struct {
227  unsigned int    *fault_tbl;     /* fault table base address */
228  i960ha_control_table
229                  *control_tbl;   /* control table base address */
230  unsigned int     initial_ac;    /* AC register initial value */
231  unsigned int     fault_config;  /* fault configuration word */
232  void           **intr_tbl;      /* interrupt table base address */
233  void            *sys_proc_tbl;  /* system procedure table
234                                     base address */
235  unsigned int     reserved;      /* reserved */
236  unsigned int    *intr_stack;    /* interrupt stack pointer */
237  unsigned int     ins_cache_cfg; /* instruction cache
238                                     configuration word */
239  unsigned int     reg_cache_cfg; /* register cache configuration word */
240}   i960ha_PRCB;
241
242typedef i960ha_control_table i960_control_table;
243typedef i960ha_PRCB i960_PRCB;
244
[702c5f5]245#elif defined(__RTEMS_I960RP__)
246
247/* i960RP control structures */
248
249/* Intel i960RP Control Table */
250
251typedef struct {
252                            /* Control Group 0 */
253  unsigned int rsvd00;
254  unsigned int rsvd01;
255  unsigned int rsvd02;
256  unsigned int rsvd03;
257                            /* Control Group 1 */
258  unsigned int imap0;             /* interrupt map 0 */
259  unsigned int imap1;             /* interrupt map 1 */
260  unsigned int imap2;             /* interrupt map 2 */
261  unsigned int icon;              /* interrupt control */
262                            /* Control Group 2 */
263  unsigned int pmcon0;            /* memory region 0 configuration */
264  unsigned int rsvd1;
265  unsigned int pmcon2;            /* memory region 2 configuration */
266  unsigned int rsvd2;
267                            /* Control Group 3 */
268  unsigned int pmcon4;            /* memory region 4 configuration */
269  unsigned int rsvd3;
270  unsigned int pmcon6;            /* memory region 6 configuration */
271  unsigned int rsvd4;
272                            /* Control Group 4 */
273  unsigned int pmcon8;            /* memory region 8 configuration */
274  unsigned int rsvd5;
275  unsigned int pmcon10;           /* memory region 10 configuration */
276  unsigned int rsvd6;
277                            /* Control Group 5 */
278  unsigned int pmcon12;           /* memory region 12 configuration */
279  unsigned int rsvd7;
280  unsigned int pmcon14;           /* memory region 14 configuration */
281  unsigned int rsvd8;
282                            /* Control Group 6 */
283  unsigned int rsvd9;
284  unsigned int rsvd10;
285  unsigned int tc;                /* trace control */
286  unsigned int bcon;              /* bus configuration control */
287}   i960rp_control_table;
288
289/* Intel i960RP Processor Control Block */
290
291typedef struct {
292  unsigned int    *fault_tbl;     /* fault table base address */
293  i960rp_control_table
294                  *control_tbl;   /* control table base address */
295  unsigned int     initial_ac;    /* AC register initial value */
296  unsigned int     fault_config;  /* fault configuration word */
297  void           **intr_tbl;      /* interrupt table base address */
298  void            *sys_proc_tbl;  /* system procedure table
299                                     base address */
300  unsigned int     reserved;      /* reserved */
301  unsigned int    *intr_stack;    /* interrupt stack pointer */
302  unsigned int     ins_cache_cfg; /* instruction cache
303                                     configuration word */
304  unsigned int     reg_cache_cfg; /* register cache configuration word */
305}   i960rp_PRCB;
306
307typedef i960rp_control_table i960_control_table;
308typedef i960rp_PRCB i960_PRCB;
309
[afd63b7]310#elif defined(__i960KA__)
311
312/* i960KA control structures */
313
314/* Intel i960KA Control Table */
315
316typedef struct {
317int pad0;
318}   i960ka_control_table;
319
320/* Intel i960KA Processor Control Block */
321
322typedef struct {
323  void           **intr_tbl;      /* interrupt table base address */
324  unsigned int    *intr_stack;    /* interrupt stack pointer */
325}   i960ka_PRCB;
326
327typedef i960ka_control_table i960_control_table;
328typedef i960ka_PRCB i960_PRCB;
329
[702c5f5]330#else
331#error "invalid processor selection!"
[7908ba5b]332#endif
333
[702c5f5]334/*
335 *  Miscellaneous Support Routines
336 */
337
[afd63b7]338#if !defined(__i960KA__)
[702c5f5]339#define i960_reload_ctl_group( group ) \
340 { register int _cmd = ((group)|0x400) ; \
341   asm volatile( "sysctl %0,%0,%0" : "=d" (_cmd) : "0" (_cmd) ); \
342 }
[afd63b7]343#endif
[702c5f5]344
345#define i960_atomic_modify( mask, addr, prev ) \
346 { register unsigned int  _mask = (mask); \
347   register unsigned int *_addr = (unsigned int *)(addr); \
348   asm volatile( "atmod  %0,%1,%1" \
349                  : "=d" (_addr), "=d" (_mask) \
350                  : "0"  (_addr), "1"  (_mask) ); \
351   (prev) = _mask; \
352 }
353
354#define atomic_modify( _mask, _address, _previous ) \
355  i960_atomic_modify( _mask, _address, _previous )
356
357#define i960_enable_tracing() \
358 { register unsigned int _pc = 0x1; \
359   asm volatile( "modpc 0,%0,%0" : "=d" (_pc) : "0" (_pc) ); \
360 }
361
[7908ba5b]362/*
363 *  Interrupt Level Routines
364 */
365
366#define i960_disable_interrupts( oldlevel ) \
367  { (oldlevel) = 0x1f0000; \
368    asm volatile ( "modpc   0,%1,%1" \
369                       : "=d" ((oldlevel)) \
370                       : "0"  ((oldlevel)) ); \
371  }
372
373#define i960_enable_interrupts( oldlevel ) \
374  { unsigned int _mask = 0x1f0000; \
375    asm volatile ( "modpc   0,%0,%1" \
376                       : "=d" (_mask), "=d" ((oldlevel)) \
377                       : "0"  (_mask), "1"  ((oldlevel)) ); \
378  }
379
380#define i960_flash_interrupts( oldlevel ) \
381  { unsigned int _mask = 0x1f0000; \
382    asm volatile ( "modpc   0,%0,%1 ; \
383                    mov     %0,%1 ; \
384                    modpc   0,%0,%1"  \
385                       : "=d" (_mask), "=d" ((oldlevel)) \
386                       : "0"  (_mask), "1"  ((oldlevel)) ); \
387  }
388
389#define i960_get_interrupt_level( _level ) \
390  { \
391    i960_disable_interrupts( _level ); \
392    i960_enable_interrupts( _level ); \
393    (_level) = ((_level) & 0x1f0000) >> 16; \
394  } while ( 0 )
395
[afd63b7]396#if !defined(__i960KA__)
[702c5f5]397#define i960_cause_intr( intr ) \
398 { register int _intr = (intr); \
399   asm volatile( "sysctl %0,%0,%0" : "=d" (_intr) : "0" (_intr) ); \
[7908ba5b]400 }
[afd63b7]401#endif
[7908ba5b]402
[702c5f5]403/*
404 *  Interrupt Masking Routines
405 */
[7908ba5b]406
[702c5f5]407#if defined(__RTEMS_I960CA__) || defined(__RTEMS_I960HA__)
[7908ba5b]408
409#define i960_unmask_intr( xint ) \
410 { register unsigned int _mask= (1<<(xint)); \
411   asm volatile( "or sf1,%0,sf1" : "=d" (_mask) : "0" (_mask) ); \
412 }
413
414#define i960_mask_intr( xint ) \
415 { register unsigned int _mask= (1<<(xint)); \
416   asm volatile( "andnot %0,sf1,sf1" : "=d" (_mask) : "0" (_mask) ); \
417 }
418
419#define i960_clear_intr( xint ) \
420 { register unsigned int _xint=(xint); \
421asm volatile( "loop_til_cleared: clrbit %0,sf0,sf0 ; \
422                  bbs    %0,sf0, loop_til_cleared" \
423                  : "=d" (_xint) : "0" (_xint) ); \
424 }
425
[702c5f5]426static inline unsigned int i960_pend_intrs()
427{ register unsigned int _intr=0;
428  asm volatile( "mov sf0,%0" : "=d" (_intr) : "0" (_intr) );
429  return ( _intr );
430}
[7908ba5b]431
[702c5f5]432static inline unsigned int i960_mask_intrs()
433{ register unsigned int _intr=0;
434  asm volatile( "mov sf1,%0" : "=d" (_intr) : "0" (_intr) );
435  return( _intr );
436}
437
438#elif defined(__RTEMS_I960RP__)
439
440#define i960_unmask_intr( xint ) \
441 { register unsigned int _mask= (1<<(xint)); \
442   register unsigned int *_imsk = (int * ) IMSK_ADDR; \
443   register unsigned int _val= *_imsk; \
444   asm volatile( "or %0,%2,%0; \
445                  st %0,(%1)" \
446                    : "=d" (_val), "=d" (_imsk), "=d" (_mask) \
447                    : "0" (_val), "1" (_imsk), "2" (_mask) ); \
[7908ba5b]448 }
449
[702c5f5]450#define i960_mask_intr( xint ) \
451 { register unsigned int _mask= (1<<(xint)); \
452   register unsigned int *_imsk = (int * ) IMSK_ADDR; \
453   register unsigned int _val = *_imsk; \
454   asm volatile( "andnot %2,%0,%0; \
455                  st %0,(%1)" \
456                    : "=d" (_val), "=d" (_imsk), "=d" (_mask) \
457                    : "0" (_val), "1" (_imsk), "2" (_mask) ); \
458 }
459#define i960_clear_intr( xint ) \
460 { register unsigned int _xint=xint; \
461   register unsigned int _mask=(1<<(xint)); \
462   register unsigned int *_ipnd = (int * ) IPND_ADDR; \
463   register unsigned int          _rslt = 0; \
464asm volatile( "loop_til_cleared: mov 0, %0; \
465                  atmod %1, %2, %0; \
466                  bbs    %3,%0, loop_til_cleared" \
467                  : "=d" (_rslt), "=d" (_ipnd), "=d" (_mask), "=d" (_xint) \
468                  : "0"  (_rslt), "1"  (_ipnd), "2"  (_mask), "3"  (_xint) ); \
[7908ba5b]469 }
470
471static inline unsigned int i960_pend_intrs()
[702c5f5]472{ register unsigned int _intr= *(unsigned int *) IPND_ADDR;
473  /*register unsigned int *_ipnd = (int * ) IPND_ADDR; \
474   asm volatile( "mov (%0),%1" \
475                    : "=d" (_ipnd), "=d" (_mask) \
476                    : "0" (_ipnd), "1" (_mask) ); \ */
[7908ba5b]477  return ( _intr );
478}
479
480static inline unsigned int i960_mask_intrs()
[702c5f5]481{ register unsigned int _intr= *(unsigned int *) IMSK_ADDR;
482  /*asm volatile( "mov sf1,%0" : "=d" (_intr) : "0" (_intr) );*/
[7908ba5b]483  return( _intr );
484}
[702c5f5]485#endif
[7908ba5b]486
487static inline unsigned int i960_get_fp()
488{ register unsigned int _fp=0;
489  asm volatile( "mov fp,%0" : "=d" (_fp) : "0" (_fp) );
490  return ( _fp );
491}
492
[702c5f5]493/*
494 *  Soft Reset
495 */
496
497#if defined(I960_SOFT_RESET_COMMAND)
498#define i960_soft_reset( prcb ) \
499 { register i960_PRCB    *_prcb = (prcb); \
500   register unsigned int *_next=0; \
501   register unsigned int  _cmd  = I960_SOFT_RESET_COMMAND; \
502   asm volatile( "lda    next,%1; \
503                  sysctl %0,%1,%2; \
504            next: mov    g0,g0" \
505                  : "=d" (_cmd), "=d" (_next), "=d" (_prcb) \
506                  : "0"  (_cmd), "1"  (_next), "2"  (_prcb) ); \
507 }
508
[afd63b7]509#elif !defined(__i960KA__)
[702c5f5]510#warning "I960_SOFT_RESET_COMMAND is not defined"
511#endif
512
[7908ba5b]513/*
514 *  The following routine swaps the endian format of an unsigned int.
515 *  It must be static because it is referenced indirectly.
516 *
517 *  This version is based on code presented in Vol. 4, No. 4 of
518 *  Insight 960.  It is certainly something you wouldn't think
519 *  of on your own.
520 */
521
522static inline unsigned int CPU_swap_u32(
523  unsigned int value
524)
525{
526  register unsigned int to_swap = value;
527  register unsigned int temp    = 0xFF00FF00;
528  register unsigned int swapped = 0;
529
530                                            /*  to_swap      swapped  */
531  asm volatile ( "rotate  16,%0,%2 ;"       /* 0x12345678  0x56781234 */
532                 "modify  %1,%0,%2 ;"       /* 0x12345678  0x12785634 */
533                 "rotate  8,%2,%2"          /* 0x12345678  0x78563412 */
534                 : "=r" (to_swap), "=r" (temp), "=r" (swapped)
535                 : "0" (to_swap), "1" (temp), "2" (swapped)
536               );
537  return( swapped );
538}
539
540#define CPU_swap_u16( value ) \
541  (((value&0xff) << 8) | ((value >> 8)&0xff))
542
543#ifdef __cplusplus
544}
545#endif
546
547#endif /* !ASM */
548
549#endif
550/* end of include file */
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