[cb585c3] | 1 | /* bspstart.c |
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| 2 | * |
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| 3 | * This set of routines starts the application. It includes application, |
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| 4 | * board, and monitor specific initialization and configuration. |
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| 5 | * The generic CPU dependent initialization has been performed |
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| 6 | * before any of these are invoked. |
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| 7 | * |
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| 8 | * Called by RTEMS::RTEMS constructor in rtems-ctor.cc |
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| 9 | * |
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| 10 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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| 11 | * On-Line Applications Research Corporation (OAR). |
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| 12 | * All rights assigned to U.S. Government, 1994. |
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| 13 | * |
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| 14 | * This material may be reproduced by or for the U.S. Government pursuant |
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| 15 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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| 16 | * notice must appear in all copies of this file and its derivatives. |
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| 17 | * |
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| 18 | * Ported to ERC32 implementation of the SPARC by On-Line Applications |
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| 19 | * Research Corporation (OAR) under contract to the European Space |
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| 20 | * Agency (ESA). |
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| 21 | * |
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| 22 | * ERC32 modifications of respective RTEMS file: COPYRIGHT (c) 1995. |
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| 23 | * European Space Agency. |
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| 24 | * |
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| 25 | * $Id$ |
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| 26 | */ |
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| 27 | |
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| 28 | #include <bsp.h> |
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| 29 | #include <rtems/libio.h> |
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| 30 | |
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| 31 | #include <libcsupport.h> |
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| 32 | |
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| 33 | #include <string.h> |
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| 34 | #include <fcntl.h> |
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| 35 | |
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| 36 | #ifdef STACK_CHECKER_ON |
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| 37 | #include <stackchk.h> |
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| 38 | #endif |
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| 39 | |
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| 40 | /* |
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| 41 | * The original table from the application and our copy of it with |
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| 42 | * some changes. |
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| 43 | */ |
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| 44 | |
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| 45 | extern rtems_configuration_table Configuration; |
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| 46 | rtems_configuration_table BSP_Configuration; |
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| 47 | |
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| 48 | rtems_cpu_table Cpu_table; |
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| 49 | rtems_unsigned32 bsp_isr_level; |
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| 50 | |
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| 51 | /* |
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| 52 | * Tells us where to put the workspace in case remote debugger is present. |
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| 53 | */ |
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| 54 | |
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| 55 | extern rtems_unsigned32 rdb_start; |
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| 56 | |
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| 57 | /* |
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| 58 | * Amount to increment itimer by each pass |
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| 59 | * It is a variable instead of a #define to allow the 'looptest' |
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| 60 | * script to bump it without recompiling rtems |
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| 61 | * |
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| 62 | * NOTE: This is based on the PA-RISC simulator. I don't know if we |
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| 63 | * can actually pull this trick on the SPARC simulator. |
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| 64 | */ |
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| 65 | |
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| 66 | rtems_unsigned32 CPU_SPARC_CLICKS_PER_TICK; |
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| 67 | |
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| 68 | #if SIMSPARC_FAST_IDLE |
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| 69 | |
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| 70 | /* |
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| 71 | * Many of the tests are very slow on the simulator because they have |
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| 72 | * have 5 second delays hardwired in. |
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| 73 | * |
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| 74 | * Try to speed those tests up by speeding up the clock when in the idle task. |
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| 75 | * |
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| 76 | * NOTE: At the current setting, 5 second delays in the tests take |
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| 77 | * approximately 5 seconds of wall time. |
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| 78 | */ |
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| 79 | |
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| 80 | rtems_extension |
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| 81 | fast_idle_switch_hook(rtems_tcb *current_task, |
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| 82 | rtems_tcb *heir_task) |
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| 83 | { |
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| 84 | static rtems_unsigned32 normal_clock = ~0; |
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| 85 | static rtems_unsigned32 fast_clock; |
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| 86 | |
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| 87 | /* init our params on first call */ |
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| 88 | if (normal_clock == ~0) |
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| 89 | { |
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| 90 | normal_clock = CPU_SPARC_CLICKS_PER_TICK; |
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| 91 | fast_clock = CPU_SPARC_CLICKS_PER_TICK / 0x08; |
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| 92 | if (fast_clock == 0) /* handle pathological case */ |
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| 93 | fast_clock++; |
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| 94 | } |
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| 95 | |
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| 96 | /* |
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| 97 | * Run the clock faster when idle is in place. |
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| 98 | */ |
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| 99 | |
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| 100 | if (heir_task == _Thread_Idle) |
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| 101 | CPU_SPARC_CLICKS_PER_TICK = fast_clock; |
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| 102 | else if (current_task == _Thread_Idle) |
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| 103 | CPU_SPARC_CLICKS_PER_TICK = normal_clock; |
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| 104 | } |
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| 105 | |
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| 106 | #endif |
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| 107 | |
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| 108 | /* |
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| 109 | * bsp_libc_init |
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| 110 | * |
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| 111 | * Initialize whatever libc we are using called from bsp_postdriver_hook. |
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| 112 | */ |
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| 113 | |
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| 114 | void bsp_libc_init(void) |
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| 115 | { |
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| 116 | extern int end; |
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| 117 | rtems_unsigned32 heap_start; |
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| 118 | rtems_unsigned32 heap_size; |
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| 119 | |
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| 120 | heap_start = (rtems_unsigned32) &end; |
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| 121 | if (heap_start & (CPU_ALIGNMENT-1)) |
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| 122 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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| 123 | |
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| 124 | heap_size = BSP_Configuration.work_space_start - (void *)&end; |
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| 125 | heap_size &= 0xfffffff0; /* keep it as a multiple of 16 bytes */ |
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| 126 | |
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| 127 | RTEMS_Malloc_Initialize((void *) heap_start, heap_size, 0); |
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| 128 | |
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| 129 | /* |
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| 130 | * Init the RTEMS libio facility to provide UNIX-like system |
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| 131 | * calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc) |
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| 132 | * Uses malloc() to get area for the iops, so must be after malloc init |
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| 133 | */ |
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| 134 | |
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| 135 | rtems_libio_init(); |
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| 136 | |
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| 137 | /* |
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| 138 | * Set up for the libc handling. |
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| 139 | */ |
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| 140 | |
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| 141 | if (BSP_Configuration.ticks_per_timeslice > 0) |
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| 142 | libc_init(1); /* reentrant if possible */ |
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| 143 | else |
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| 144 | libc_init(0); /* non-reentrant */ |
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| 145 | |
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| 146 | } |
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| 147 | |
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| 148 | |
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| 149 | /* |
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| 150 | * bsp_pretasking_hook |
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| 151 | * |
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| 152 | * BSP pretasking hook. Called just before drivers are initialized. |
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| 153 | * Used to setup libc and install any BSP extensions. |
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| 154 | */ |
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| 155 | |
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| 156 | void bsp_pretasking_hook(void) |
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| 157 | { |
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| 158 | bsp_libc_init(); |
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| 159 | |
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| 160 | #if SIMSPARC_FAST_IDLE |
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| 161 | /* |
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| 162 | * Install the fast idle task switch extension |
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| 163 | * |
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| 164 | * On MP systems, might not want to do this; it confuses at least |
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| 165 | * one test (mp06) on the PA-RISC simulator |
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| 166 | */ |
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| 167 | |
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| 168 | #if 0 |
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| 169 | if (BSP_Configuration.User_multiprocessing_table == 0) |
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| 170 | #endif |
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| 171 | { |
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| 172 | rtems_extensions_table fast_idle_extension; |
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| 173 | rtems_id extension_id; |
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| 174 | rtems_status_code rc; |
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| 175 | |
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| 176 | memset(&fast_idle_extension, 0, sizeof(fast_idle_extension)); |
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| 177 | |
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| 178 | fast_idle_extension.thread_switch = fast_idle_switch_hook; |
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| 179 | |
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| 180 | rc = rtems_extension_create( |
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| 181 | rtems_build_name('F', 'D', 'L', 'E'), |
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| 182 | &fast_idle_extension, |
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| 183 | &extension_id |
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| 184 | ); |
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| 185 | if (rc != RTEMS_SUCCESSFUL) |
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| 186 | rtems_fatal_error_occurred(rc); |
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| 187 | } |
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| 188 | #endif |
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| 189 | |
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| 190 | |
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| 191 | #ifdef STACK_CHECKER_ON |
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| 192 | /* |
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| 193 | * Initialize the stack bounds checker |
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| 194 | * We can either turn it on here or from the app. |
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| 195 | */ |
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| 196 | |
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| 197 | Stack_check_Initialize(); |
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| 198 | #endif |
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| 199 | |
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| 200 | #ifdef RTEMS_DEBUG |
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| 201 | rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); |
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| 202 | #endif |
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| 203 | |
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| 204 | } |
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| 205 | |
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| 206 | /* |
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| 207 | * bsp_postdriver_hook |
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| 208 | * |
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| 209 | * After drivers are setup, register some "filenames" |
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| 210 | * and open stdin, stdout, stderr files |
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| 211 | * |
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| 212 | * Newlib will automatically associate the files with these |
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| 213 | * (it hardcodes the numbers) |
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| 214 | */ |
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| 215 | |
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| 216 | void |
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| 217 | bsp_postdriver_hook(void) |
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| 218 | { |
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| 219 | int stdin_fd, stdout_fd, stderr_fd; |
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| 220 | int error_code; |
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| 221 | |
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| 222 | error_code = 'S' << 24 | 'T' << 16; |
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| 223 | |
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| 224 | if ((stdin_fd = __rtems_open("/dev/console", O_RDONLY, 0)) == -1) |
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| 225 | rtems_fatal_error_occurred( error_code | 'D' << 8 | '0' ); |
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| 226 | |
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| 227 | if ((stdout_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1) |
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| 228 | rtems_fatal_error_occurred( error_code | 'D' << 8 | '1' ); |
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| 229 | |
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| 230 | if ((stderr_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1) |
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| 231 | rtems_fatal_error_occurred( error_code | 'D' << 8 | '2' ); |
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| 232 | |
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| 233 | if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2)) |
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| 234 | rtems_fatal_error_occurred( error_code | 'I' << 8 | 'O' ); |
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| 235 | |
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| 236 | if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2)) |
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| 237 | rtems_fatal_error_occurred( error_code | 'I' << 8 | 'O' ); |
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| 238 | } |
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| 239 | |
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| 240 | /* |
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| 241 | * bsp_start |
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| 242 | * |
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| 243 | * This routine does the bulk of the system initialization. |
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| 244 | */ |
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| 245 | |
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| 246 | void bsp_start( void ) |
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| 247 | { |
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| 248 | unsigned char *work_space_start; |
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| 249 | |
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| 250 | /* Check if MEc is initialised */ |
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| 251 | |
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| 252 | if (!(ERC32_MEC.Control & 0xfe080000)) { |
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| 253 | |
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| 254 | /* |
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| 255 | * DISABLE THE HARDWARE WATCHDOG!!! |
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| 256 | */ |
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| 257 | |
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| 258 | ERC32_MEC.Watchdog_Trap_Door_Set = 0; /* value is irrelevant */ |
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| 259 | |
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| 260 | /* |
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| 261 | * Reduce the number of wait states to 0 for all memory areas. |
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| 262 | */ |
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| 263 | |
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| 264 | ERC32_MEC.Wait_State_Configuration = 0; |
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| 265 | |
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| 266 | } |
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| 267 | |
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| 268 | /* |
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| 269 | * Set up our hooks |
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| 270 | * Make sure libc_init is done before drivers initialized so that |
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| 271 | * they can use atexit() |
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| 272 | */ |
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| 273 | |
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| 274 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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| 275 | |
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| 276 | Cpu_table.predriver_hook = NULL; /* bsp_spurious_initialize;*/ |
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| 277 | |
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| 278 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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| 279 | |
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| 280 | Cpu_table.idle_task = NULL; /* do not override system IDLE task */ |
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| 281 | |
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| 282 | /* |
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| 283 | * SIS does zero out memory BUT only when IT begins execution. Thus |
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| 284 | * if we want to have a clean slate in the workspace each time we |
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| 285 | * begin execution of OUR application, then we must zero the workspace. |
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| 286 | */ |
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| 287 | |
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| 288 | Cpu_table.do_zero_of_workspace = TRUE; |
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| 289 | |
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| 290 | /* |
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| 291 | * This should be enough interrupt stack. |
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| 292 | */ |
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| 293 | |
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| 294 | Cpu_table.interrupt_stack_size = (12 * 1024); |
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| 295 | |
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| 296 | /* |
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| 297 | * SIS does not support MP configurations so there is really no way |
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| 298 | * to check this out. |
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| 299 | */ |
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| 300 | |
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| 301 | Cpu_table.extra_mpci_receive_server_stack = 0; |
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| 302 | |
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| 303 | /* |
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| 304 | * Copy the table and allocate memory for the RTEMS Workspace |
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| 305 | */ |
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| 306 | |
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| 307 | BSP_Configuration = Configuration; |
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| 308 | |
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| 309 | work_space_start = |
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| 310 | (unsigned char *)rdb_start - BSP_Configuration.work_space_size; |
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| 311 | |
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| 312 | if ( work_space_start <= (unsigned char *)&end ) { |
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| 313 | DEBUG_puts( "bspstart: Not enough RAM!!!\n" ); |
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| 314 | BSP_fatal_return(); |
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| 315 | } |
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| 316 | |
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| 317 | BSP_Configuration.work_space_start = work_space_start; |
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| 318 | |
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| 319 | /* |
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| 320 | * Add 1 region for RTEMS Malloc |
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| 321 | */ |
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| 322 | |
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| 323 | BSP_Configuration.RTEMS_api_configuration->maximum_regions++; |
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| 324 | |
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| 325 | #ifdef RTEMS_NEWLIB |
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| 326 | /* |
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| 327 | * Add 1 extension for newlib libc |
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| 328 | */ |
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| 329 | |
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| 330 | BSP_Configuration.maximum_extensions++; |
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| 331 | #endif |
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| 332 | |
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| 333 | #ifdef STACK_CHECKER_ON |
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| 334 | /* |
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| 335 | * Add 1 extension for stack checker |
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| 336 | */ |
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| 337 | |
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| 338 | BSP_Configuration.maximum_extensions++; |
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| 339 | #endif |
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| 340 | |
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| 341 | #if SIMSPARC_FAST_IDLE |
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| 342 | /* |
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| 343 | * Add 1 extension for fast idle |
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| 344 | */ |
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| 345 | |
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| 346 | BSP_Configuration.maximum_extensions++; |
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| 347 | #endif |
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| 348 | |
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| 349 | /* |
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| 350 | * Add 1 extension for MPCI_fatal |
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| 351 | */ |
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| 352 | |
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| 353 | if (BSP_Configuration.User_multiprocessing_table) |
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| 354 | BSP_Configuration.maximum_extensions++; |
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| 355 | |
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| 356 | /* |
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| 357 | * Set the "clicks per tick" for the simulator |
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| 358 | * used by XXX/clock/clock.c to schedule interrupts |
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| 359 | */ |
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| 360 | |
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| 361 | CPU_SPARC_CLICKS_PER_TICK = BSP_Configuration.microseconds_per_tick; |
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| 362 | |
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| 363 | /* |
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| 364 | * Initialize RTEMS. main() will finish it up and start multitasking. |
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| 365 | */ |
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| 366 | |
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| 367 | rtems_libio_config( &BSP_Configuration, BSP_LIBIO_MAX_FDS ); |
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| 368 | |
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| 369 | bsp_isr_level = rtems_initialize_executive_early( |
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| 370 | &BSP_Configuration, |
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| 371 | &Cpu_table |
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| 372 | ); |
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| 373 | } |
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