source: trunk/libs/newlib/src/libgloss/sparc_leon/asm-leon/leon.h @ 656

Last change on this file since 656 was 444, checked in by satin@…, 6 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
File size: 11.5 KB
Line 
1/*
2 * Copyright (c) 2011 Aeroflex Gaisler
3 *
4 * BSD license:
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25
26#ifndef _INCLUDE_LEON_h
27#define _INCLUDE_LEON_h
28
29#include <asm-leon/leon3.h>
30#include <asm-leon/amba.h>
31
32#ifdef __cplusplus
33extern "C"
34{
35#endif
36
37/* psr defines */
38#define SPARC_PSR_WIN_MASK  0x0000001f  /* bit   0-4 */
39#define SPARC_PSR_ET_MASK   0x00000020  /* bit   5 */
40#define SPARC_PSR_PS_MASK   0x00000040  /* bit   6 */
41#define SPARC_PSR_S_MASK    0x00000080  /* bit   7 */
42#define SPARC_PSR_PIL_MASK  0x00000F00  /* bits  8 - 11 */
43#define SPARC_PSR_EF_MASK   0x00001000  /* bit  12 */
44#define SPARC_PSR_EC_MASK   0x00002000  /* bit  13 */
45#define SPARC_PSR_ICC_MASK  0x00F00000  /* bits 20 - 23 */
46#define SPARC_PSR_VER_MASK  0x0F000000  /* bits 24 - 27 */
47#define SPARC_PSR_IMPL_MASK 0xF0000000  /* bits 28 - 31 */
48#define SPARC_PSR_PIL_SHIFT 8
49
50#define SPARC_NUM_REGWIN    _nwindows
51
52#ifndef __ASSEMBLER__
53  extern int _nwindows;
54  extern int _leon_version;
55#endif
56
57#define LEON_VERSION _leon_version
58
59/*
60 *  Interrupt Sources
61 *
62 *  The interrupt source numbers directly map to the trap type and to
63 *  the bits used in the Interrupt Clear, Interrupt Force, Interrupt Mask,
64 *  and the Interrupt Pending Registers.
65 */
66
67#define LEON_INTERRUPT_CORRECTABLE_MEMORY_ERROR  1
68#define LEON2_INTERRUPT_UART_2_RX_TX             2
69#define LEON2_INTERRUPT_UART_1_RX_TX             3
70#define LEON23_INTERRUPT_UART_2_RX_TX            leon23_irqs[1] /*console.c */
71#define LEON23_INTERRUPT_UART_1_RX_TX            leon23_irqs[0] /*console.c */
72#define LEON_INTERRUPT_EXTERNAL_0                4
73#define LEON_INTERRUPT_EXTERNAL_1                5
74#define LEON_INTERRUPT_EXTERNAL_2                6
75#define LEON_INTERRUPT_EXTERNAL_3                7
76#define LEON2_INTERRUPT_TIMER1                   8
77#define LEON2_INTERRUPT_TIMER2                   9
78#define LEON23_INTERRUPT_TIMER1                  leon23_timerirqs[0]    /* timer.c */
79#define LEON23_INTERRUPT_TIMER2                  leon23_timerirqs[1]    /* timer.c */
80#define LEON_INTERRUPT_EMPTY1                    10
81#define LEON_INTERRUPT_EMPTY2                    11
82#define LEON_INTERRUPT_EMPTY3                    12
83#define LEON_INTERRUPT_EMPTY4                    13
84#define LEON_INTERRUPT_EMPTY5                    14
85#define LEON_INTERRUPT_EMPTY6                    15
86
87#ifndef  __ASSEMBLER__
88
89/*
90 *  Trap Types for on-chip peripherals
91 *
92 *  Source: Table 8 - Interrupt Trap Type and Default Priority Assignments
93 *
94 *  NOTE: The priority level for each source corresponds to the least
95 *        significant nibble of the trap type.
96 */
97
98#define LEON_TRAP_TYPE( _source ) SPARC_ASYNCHRONOUS_TRAP((_source) + 0x10)
99
100#define LEON_TRAP_SOURCE( _trap ) ((_trap) - 0x10)
101
102#define LEON_INT_TRAP( _trap ) \
103  ( (_trap) >= LEON_TRAP_TYPE( LEON_INTERRUPT_CORRECTABLE_MEMORY_ERROR ) && \
104    (_trap) <= LEON_TRAP_TYPE( LEON_INTERRUPT_EMPTY6 ) )
105
106
107#endif
108
109
110/*
111 *  The following defines the bits in Memory Configuration Register 1.
112 */
113
114#define LEON_MEMORY_CONFIGURATION_PROM_SIZE_MASK  0x0003C000
115
116/*
117 *  The following defines the bits in Memory Configuration Register 1.
118 */
119
120#define LEON_MEMORY_CONFIGURATION_RAM_SIZE_MASK  0x00001E00
121
122
123/*
124 *  The following defines the bits in the Timer Control Register.
125 */
126
127#define LEON_REG_TIMER_CONTROL_EN    0x00000001 /* 1 = enable counting */
128  /* 0 = hold scalar and counter */
129#define LEON_REG_TIMER_CONTROL_RL    0x00000002 /* 1 = reload at 0 */
130  /* 0 = stop at 0 */
131#define LEON_REG_TIMER_CONTROL_LD    0x00000004 /* 1 = load counter */
132  /* 0 = no function */
133
134/*
135 *  The following defines the bits in the UART Control Registers.
136 *
137 */
138
139#define LEON_REG_UART_CONTROL_RTD  0x000000FF   /* RX/TX data */
140
141/*
142 *  The following defines the bits in the LEON UART Status Registers.
143 */
144
145#define LEON_REG_UART_STATUS_DR   0x00000001    /* Data Ready */
146#define LEON_REG_UART_STATUS_TSE  0x00000002    /* TX Send Register Empty */
147#define LEON_REG_UART_STATUS_THE  0x00000004    /* TX Hold Register Empty */
148#define LEON_REG_UART_STATUS_BR   0x00000008    /* Break Error */
149#define LEON_REG_UART_STATUS_OE   0x00000010    /* RX Overrun Error */
150#define LEON_REG_UART_STATUS_PE   0x00000020    /* RX Parity Error */
151#define LEON_REG_UART_STATUS_FE   0x00000040    /* RX Framing Error */
152#define LEON_REG_UART_STATUS_ERR  0x00000078    /* Error Mask */
153
154
155/*
156 *  The following defines the bits in the LEON UART Status Registers.
157 */
158
159#define LEON_REG_UART_CTRL_RE     0x00000001    /* Receiver enable */
160#define LEON_REG_UART_CTRL_TE     0x00000002    /* Transmitter enable */
161#define LEON_REG_UART_CTRL_RI     0x00000004    /* Receiver interrupt enable */
162#define LEON_REG_UART_CTRL_TI     0x00000008    /* Transmitter interrupt enable */
163#define LEON_REG_UART_CTRL_PS     0x00000010    /* Parity select */
164#define LEON_REG_UART_CTRL_PE     0x00000020    /* Parity enable */
165#define LEON_REG_UART_CTRL_FL     0x00000040    /* Flow control enable */
166#define LEON_REG_UART_CTRL_LB     0x00000080    /* Loop Back enable */
167
168/* leon2 asis */
169#define ASI_LEON2_IFLUSH                0x05
170#define ASI_LEON2_DFLUSH                0x06
171#define ASI_LEON2_CACHEMISS             1
172
173/* leon3 asis */
174#define ASI_LEON3_IFLUSH                0x10
175#define ASI_LEON3_DFLUSH                0x11
176#define ASI_LEON3_CACHEMISS             1
177#define ASI_LEON3_SYSCTRL               0x02
178
179#define ASI_LEON23_ITAG         0x0c
180#define ASI_LEON23_DTAG         0x0e
181
182
183#ifndef  __ASSEMBLER__
184
185  unsigned int leonbare_leon23_loadnocache (unsigned int addr);
186  unsigned int leonbare_leon23_loadnocache16 (unsigned int addr);
187  unsigned int leonbare_leon23_loadnocache8 (unsigned int addr);
188  unsigned int leonbare_leon23_storenocache (unsigned int addr,
189                                             unsigned int value);
190  unsigned int leonbare_leon23_storenocache16 (unsigned int addr,
191                                               unsigned int value);
192  unsigned int leonbare_leon23_storenocache8 (unsigned int addr,
193                                              unsigned int value);
194
195  unsigned int leonbare_leon3_loadnocache (unsigned int addr);
196  unsigned int leonbare_leon3_loadnocache16 (unsigned int addr);
197  unsigned int leonbare_leon3_loadnocache8 (unsigned int addr);
198
199
200/*
201 *  This is used to manipulate the on-chip registers.
202 *
203 *  The following symbol must be defined in the linkcmds file and point
204 *  to the correct location.
205 */
206
207  extern unsigned long *LEON23_IRQ_mask_addr;   /* in peripherals.h */
208  extern unsigned long *LEON23_IRQ_force_addr;  /* in peripherals.h */
209  extern unsigned long *LEON23_IRQ_pending_addr;        /* in peripherals.h */
210  extern unsigned long *LEON23_IRQ_clear_addr;  /* in peripherals.h */
211
212/*
213 *  Macros to manipulate the Interrupt Clear, Interrupt Force, Interrupt Mask,
214 *  and the Interrupt Pending Registers.
215 *
216 *  NOTE: For operations which are not atomic, this code disables interrupts
217 *        to guarantee there are no intervening accesses to the same register.
218 *        The operations which read the register, modify the value and then
219 *        store the result back are vulnerable.
220 */
221
222#define LEON_Clear_interrupt( _source ) \
223  do { \
224    (*LEON23_IRQ_clear_addr) = (1 << (_source)); \
225  } while (0)
226
227#define LEON_Force_interrupt( _source ) \
228  do { \
229    (*LEON23_IRQ_force_addr) = (1 << (_source)); \
230  } while (0)
231
232#define LEON_Is_interrupt_masked( _source ) \
233  ((*LEON23_IRQ_mask_addr) & (1 << (_source)))
234
235#define LEON_Mask_interrupt( _source ) \
236  do { \
237    unsigned32 _level; \
238    \
239    _level = sparc_disable_interrupts(); \
240      (*LEON23_IRQ_mask_addr) &= ~(1 << (_source)); \
241    sparc_enable_interrupts( _level ); \
242  } while (0)
243
244#define LEON_Unmask_interrupt( _source ) \
245  do { \
246    unsigned32 _level; \
247    \
248    _level = sparc_disable_interrupts(); \
249      (*LEON23_IRQ_mask_addr) |= (1 << (_source)); \
250    sparc_enable_interrupts( _level ); \
251  } while (0)
252
253#define LEON_Disable_interrupt( _source, _previous ) \
254  do { \
255    unsigned32 _level; \
256    unsigned32 _mask = 1 << (_source); \
257    \
258    _level = sparc_disable_interrupts(); \
259      (_previous) = (*LEON23_IRQ_mask_addr); \
260      (*LEON23_IRQ_mask_addr) = _previous & ~_mask; \
261    sparc_enable_interrupts( _level ); \
262    (_previous) &= _mask; \
263  } while (0)
264
265#define LEON_Restore_interrupt( _source, _previous ) \
266  do { \
267    unsigned32 _level; \
268    unsigned32 _mask = 1 << (_source); \
269    \
270    _level = sparc_disable_interrupts(); \
271      (*LEON23_IRQ_mask_addr) = \
272        ((*LEON23_IRQ_mask_addr) & ~_mask) | (_previous); \
273    sparc_enable_interrupts( _level ); \
274  } while (0)
275
276/*
277 *  Each timer control register is organized as follows:
278 *
279 *    D0 - Enable
280 *          1 = enable counting
281 *          0 = hold scaler and counter
282 *
283 *    D1 - Counter Reload
284 *          1 = reload counter at zero and restart
285 *          0 = stop counter at zero
286 *
287 *    D2 - Counter Load
288 *          1 = load counter with preset value
289 *          0 = no function
290 *
291 */
292
293#define LEON_REG_TIMER_COUNTER_IRQEN              0x00000008
294
295#define LEON_REG_TIMER_COUNTER_RELOAD_AT_ZERO     0x00000002
296#define LEON_REG_TIMER_COUNTER_STOP_AT_ZERO       0x00000000
297
298#define LEON_REG_TIMER_COUNTER_LOAD_COUNTER       0x00000004
299
300#define LEON_REG_TIMER_COUNTER_ENABLE_COUNTING    0x00000001
301#define LEON_REG_TIMER_COUNTER_DISABLE_COUNTING   0x00000000
302
303#define LEON_REG_TIMER_COUNTER_RELOAD_MASK        0x00000002
304#define LEON_REG_TIMER_COUNTER_ENABLE_MASK        0x00000001
305
306#define LEON_REG_TIMER_COUNTER_DEFINED_MASK       0x00000003
307#define LEON_REG_TIMER_COUNTER_CURRENT_MODE_MASK  0x00000003
308
309/* console.c */
310  int lo_sprintf (char *buf, const char *fmt, ...);
311
312/* do a virtual address read without cache */
313  static __inline__ unsigned long leon23_getpsr ()
314  {
315    unsigned long retval;
316    __asm__ __volatile__ ("mov %%psr, %0\n\t":"=r" (retval):);
317      return retval;
318  }
319
320  extern __inline__ void sparc_leon2_dcache_flush (void)
321  {
322    __asm__
323      __volatile__ ("sta %%g0, [%%g0] %0\n\t"::"i"
324                    (ASI_LEON2_IFLUSH):"memory");
325    __asm__
326      __volatile__ ("sta %%g0, [%%g0] %0\n\t"::"i"
327                    (ASI_LEON2_DFLUSH):"memory");
328  };
329
330
331  extern __inline__ void sparc_leon_dcache_flush (void)
332  {
333    switch (sparc_leon23_get_psr_version ())
334      {
335      case 0:
336      case 2:
337        sparc_leon2_dcache_flush ();
338        break;
339      default:
340        sparc_leon3_dcache_flush ();
341        break;
342      }
343  }
344
345  extern int lolevelirqinstall (int irqnr, void (*handler) ());
346  extern unsigned long locore_readtbr ();
347  extern void _leonbase_Stop ();
348
349  extern void uninstall_winoverflow_hook ();
350  extern int install_winoverflow_hook (void (*func) (void));
351
352  extern void sparc_leon23_icache_flush ();
353  extern void sparc_leon23_dcache_flush ();
354
355#endif /* ! __ASSEMBLER__ */
356
357#ifdef __cplusplus
358}
359#endif
360
361#define TACODE_IRQCALL    2
362#define TACODE_IRQCALL_FLUSH 6
363
364#define TACODE_FLUSH      3
365#define TACODE_IRQCALLDIS 5
366
367
368
369#endif /* !_INCLUDE_LEON_h */
370/* end of include file */
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