[3235ad9] | 1 | /* bsp.h |
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| 2 | * |
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| 3 | * This include file contains all Papyrus board IO definitions. |
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| 4 | * |
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| 5 | * Author: Andrew Bray <andy@i-cubed.demon.co.uk> |
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| 6 | * |
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| 7 | * COPYRIGHT (c) 1995 by i-cubed ltd. |
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| 8 | * |
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| 9 | * To anyone who acknowledges that this file is provided "AS IS" |
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| 10 | * without any express or implied warranty: |
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| 11 | * permission to use, copy, modify, and distribute this file |
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| 12 | * for any purpose is hereby granted without fee, provided that |
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| 13 | * the above copyright notice and this notice appears in all |
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| 14 | * copies, and that the name of i-cubed limited not be used in |
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| 15 | * advertising or publicity pertaining to distribution of the |
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| 16 | * software without specific, written prior permission. |
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| 17 | * i-cubed limited makes no representations about the suitability |
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| 18 | * of this software for any purpose. |
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| 19 | * |
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| 20 | * Derived from c/src/lib/libbsp/no_cpu/no_bsp/include/bsp.h |
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| 21 | * |
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| 22 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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| 23 | * On-Line Applications Research Corporation (OAR). |
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| 24 | * All rights assigned to U.S. Government, 1994. |
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| 25 | * |
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| 26 | * This material may be reproduced by or for the U.S. Government pursuant |
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| 27 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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| 28 | * notice must appear in all copies of this file and its derivatives. |
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| 29 | * |
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| 30 | * bsp.h,v 1.2 1995/05/31 16:56:13 joel Exp |
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| 31 | */ |
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| 32 | |
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| 33 | #ifndef __PAPYRUS_h |
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| 34 | #define __PAPYRUS_h |
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| 35 | |
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| 36 | #ifdef __cplusplus |
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| 37 | extern "C" { |
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| 38 | #endif |
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| 39 | |
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| 40 | #ifdef ASM |
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| 41 | /* Definition of where to store registers in alignment handler */ |
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| 42 | #define ALIGN_REGS 0x0140 |
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| 43 | |
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| 44 | #else |
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| 45 | #include <rtems.h> |
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| 46 | |
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| 47 | /* |
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| 48 | * Define the time limits for RTEMS Test Suite test durations. |
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| 49 | * Long test and short test duration limits are provided. These |
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| 50 | * values are in seconds and need to be converted to ticks for the |
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| 51 | * application. |
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| 52 | * |
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| 53 | */ |
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| 54 | |
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| 55 | #define MAX_LONG_TEST_DURATION 300 /* 5 minutes = 300 seconds */ |
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| 56 | #define MAX_SHORT_TEST_DURATION 3 /* 3 seconds */ |
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| 57 | |
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| 58 | /* |
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| 59 | * Stuff for Time Test 27 |
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| 60 | */ |
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| 61 | |
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| 62 | #define MUST_WAIT_FOR_INTERRUPT 0 |
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| 63 | |
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| 64 | #define Install_tm27_vector( handler ) set_vector( (handler), PPC_IRQ_SCALL, 1 ) |
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| 65 | |
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| 66 | #define Cause_tm27_intr() asm volatile ("sc") |
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| 67 | |
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| 68 | #define Clear_tm27_intr() |
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| 69 | |
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| 70 | #define Lower_tm27_intr() |
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| 71 | |
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| 72 | /* |
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| 73 | * Simple spin delay in microsecond units for device drivers. |
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| 74 | * This is very dependent on the clock speed of the target. |
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| 75 | */ |
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| 76 | |
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| 77 | #define delay( microseconds ) \ |
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| 78 | { \ |
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| 79 | unsigned32 start, ticks, now; \ |
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| 80 | asm volatile ("mftblo %0" : "=r" (start)); \ |
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| 81 | ticks = (microseconds) * Cpu_table.clicks_per_usec; \ |
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| 82 | do \ |
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| 83 | asm volatile ("mftblo %0" : "=r" (now)); \ |
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| 84 | while (now - start < ticks); \ |
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| 85 | } |
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| 86 | |
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| 87 | /* Constants */ |
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| 88 | |
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| 89 | #define RAM_START 0 |
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| 90 | #define RAM_END 0x00200000 |
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| 91 | |
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| 92 | /* miscellaneous stuff assumed to exist */ |
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| 93 | |
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| 94 | extern rtems_configuration_table BSP_Configuration; /* owned by BSP */ |
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| 95 | extern rtems_cpu_table Cpu_table; /* owned by BSP */ |
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| 96 | |
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| 97 | /* functions */ |
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| 98 | |
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| 99 | void bsp_start( void ); |
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| 100 | void bsp_cleanup( void ); |
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| 101 | |
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| 102 | rtems_isr_entry set_vector( /* returns old vector */ |
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| 103 | rtems_isr_entry handler, /* isr routine */ |
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| 104 | rtems_vector_number vector, /* vector number */ |
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| 105 | int type /* RTEMS or RAW intr */ |
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| 106 | ); |
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| 107 | #endif /* ASM */ |
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| 108 | |
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| 109 | #ifdef __cplusplus |
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| 110 | } |
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| 111 | #endif |
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| 112 | |
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| 113 | #endif |
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| 114 | /* end of include file */ |
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