[ac7d5ef0] | 1 | /* |
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[88d594a] | 2 | * @(#)bspstart.c 1.14 - 95/05/16 |
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[ac7d5ef0] | 3 | * |
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| 4 | */ |
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| 5 | |
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| 6 | /* bsp_start() |
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| 7 | * |
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| 8 | * This routine starts the application. It includes application, |
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| 9 | * board, and monitor specific initialization and configuration. |
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| 10 | * The generic CPU dependent initialization has been performed |
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| 11 | * before this routine is invoked. |
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| 12 | * |
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| 13 | * Called by RTEMS::RTEMS constructor in startup-ctor.cc |
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| 14 | * |
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| 15 | * INPUT: NONE |
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| 16 | * |
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| 17 | * OUTPUT: NONE |
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| 18 | * |
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| 19 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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| 20 | * On-Line Applications Research Corporation (OAR). |
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| 21 | * All rights assigned to U.S. Government, 1994. |
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| 22 | * |
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| 23 | * This material may be reproduced by or for the U.S. Government pursuant |
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| 24 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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| 25 | * notice must appear in all copies of this file and its derivatives. |
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| 26 | * |
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[88d594a] | 27 | * bspstart.c,v 1.2 1995/05/09 20:17:33 joel Exp |
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[ac7d5ef0] | 28 | */ |
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| 29 | |
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| 30 | #include <bsp.h> |
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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 | |
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| 35 | #ifdef STACK_CHECKER_ON |
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| 36 | #include <stackchk.h> |
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| 37 | #endif |
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| 38 | |
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| 39 | extern rtems_configuration_table Configuration; |
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| 40 | |
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| 41 | rtems_configuration_table BSP_Configuration; |
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| 42 | rtems_cpu_table Cpu_table; |
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| 43 | rtems_unsigned32 bsp_isr_level; |
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| 44 | |
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| 45 | #define WORKSPACE_SIZE (1024 * 1024) |
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| 46 | rtems_unsigned8 MY_WORK_SPACE[ WORKSPACE_SIZE ]; |
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| 47 | |
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| 48 | /* |
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| 49 | * Amount to increment itimer by each pass |
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| 50 | * It is a variable instead of a #define to allow the 'looptest' |
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| 51 | * script to bump it without recompiling rtems |
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| 52 | */ |
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| 53 | |
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| 54 | rtems_unsigned32 CPU_HPPA_CLICKS_PER_TICK; |
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| 55 | |
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| 56 | #if SIMHPPA_FAST_IDLE |
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| 57 | |
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| 58 | /* |
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| 59 | * Many of the tests are very slow on the simulator because they have |
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| 60 | * have 5 second delays hardwired in. |
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| 61 | * Try to speed those tests up by speeding up the clock when in idle |
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| 62 | */ |
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| 63 | |
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| 64 | rtems_extension |
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| 65 | fast_idle_switch_hook(rtems_tcb *current_task, |
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| 66 | rtems_tcb *heir_task) |
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| 67 | { |
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| 68 | static rtems_unsigned32 normal_clock = ~0; |
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| 69 | static rtems_unsigned32 fast_clock; |
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| 70 | |
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| 71 | /* init our params on first call */ |
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| 72 | if (normal_clock == ~0) |
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| 73 | { |
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| 74 | normal_clock = CPU_HPPA_CLICKS_PER_TICK; |
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| 75 | fast_clock = CPU_HPPA_CLICKS_PER_TICK / 0x100; |
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| 76 | if (fast_clock == 0) /* who? me? pathological? never! */ |
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| 77 | fast_clock++; |
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| 78 | } |
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| 79 | |
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| 80 | /* |
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| 81 | * Checking for 'name' field of 'IDLE' is not the best/safest, |
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| 82 | * but its the best we could think of at the moment. |
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| 83 | */ |
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| 84 | |
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| 85 | if (heir_task->name == rtems_build_name('I', 'D', 'L', 'E')) |
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| 86 | CPU_HPPA_CLICKS_PER_TICK = fast_clock; |
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| 87 | else if (current_task->name == rtems_build_name('I', 'D', 'L', 'E')) |
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| 88 | CPU_HPPA_CLICKS_PER_TICK = normal_clock; |
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| 89 | } |
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| 90 | |
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| 91 | #endif |
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| 92 | |
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| 93 | /* |
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| 94 | * Function: bsp_libc_init |
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| 95 | * Created: 94/12/6 |
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| 96 | * |
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| 97 | * Description: |
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| 98 | * Initialize whatever libc we are using |
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| 99 | * called from bsp_postdriver_hook |
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| 100 | * |
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| 101 | * |
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| 102 | * Parameters: |
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| 103 | * none |
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| 104 | * |
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| 105 | * Returns: |
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| 106 | * none. |
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| 107 | * |
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| 108 | * Side Effects: |
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| 109 | * |
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| 110 | * |
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| 111 | * Notes: |
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| 112 | * |
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| 113 | * Deficiencies/ToDo: |
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| 114 | * |
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| 115 | * |
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| 116 | */ |
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| 117 | |
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| 118 | void |
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| 119 | bsp_libc_init(void) |
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| 120 | { |
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| 121 | extern int end; |
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| 122 | rtems_unsigned32 heap_start; |
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| 123 | |
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| 124 | heap_start = (rtems_unsigned32) &end; |
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| 125 | if (heap_start & (CPU_ALIGNMENT-1)) |
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| 126 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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| 127 | |
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| 128 | RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0); |
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| 129 | |
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| 130 | /* |
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| 131 | * Set up for the libc handling. |
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| 132 | */ |
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| 133 | |
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| 134 | if (BSP_Configuration.ticks_per_timeslice > 0) |
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| 135 | libc_init(1); /* reentrant if possible */ |
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| 136 | else |
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| 137 | libc_init(0); /* non-reentrant */ |
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| 138 | |
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| 139 | /* |
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| 140 | * on MP systems, always use the print buffer |
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| 141 | * instead of the (broken) system calls |
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| 142 | */ |
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| 143 | |
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| 144 | if (BSP_Configuration.User_multiprocessing_table) |
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| 145 | use_print_buffer = 1; |
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| 146 | |
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| 147 | #ifdef SIMHPPA_ROM |
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| 148 | use_print_buffer = 1; |
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| 149 | #endif |
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| 150 | } |
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| 151 | |
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| 152 | |
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| 153 | /* |
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| 154 | * Function: bsp_pretasking_hook |
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| 155 | * Created: 95/03/10 |
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| 156 | * |
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| 157 | * Description: |
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| 158 | * BSP pretasking hook. Called just before drivers are initialized. |
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| 159 | * Used to setup libc and install any BSP extensions. |
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| 160 | * |
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| 161 | * Parameters: |
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| 162 | * none |
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| 163 | * |
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| 164 | * Returns: |
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| 165 | * nada |
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| 166 | * |
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| 167 | * Side Effects: |
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| 168 | * installs a few extensions |
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| 169 | * |
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| 170 | * Notes: |
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| 171 | * Must not use libc (to do io) from here, since drivers are |
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| 172 | * not yet initialized. |
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| 173 | * |
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| 174 | * Deficiencies/ToDo: |
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| 175 | * |
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| 176 | * |
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| 177 | */ |
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| 178 | |
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| 179 | void |
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| 180 | bsp_pretasking_hook(void) |
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| 181 | { |
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| 182 | bsp_libc_init(); |
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| 183 | |
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| 184 | #if SIMHPPA_FAST_IDLE |
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| 185 | /* |
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| 186 | * Install the fast idle task switch extension |
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| 187 | * |
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| 188 | * on MP systems, might now want to do this; it confuses at least |
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| 189 | * one test (mp06) |
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| 190 | */ |
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| 191 | |
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| 192 | #if 0 |
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| 193 | if (BSP_Configuration.User_multiprocessing_table == 0) |
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| 194 | #endif |
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| 195 | { |
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| 196 | rtems_extensions_table fast_idle_extension; |
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| 197 | rtems_id extension_id; |
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| 198 | rtems_status_code rc; |
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| 199 | |
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| 200 | memset(&fast_idle_extension, 0, sizeof(fast_idle_extension)); |
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| 201 | |
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| 202 | fast_idle_extension.task_switch = fast_idle_switch_hook; |
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| 203 | |
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| 204 | rc = rtems_extension_create(rtems_build_name('F', 'D', 'L', 'E'), |
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| 205 | &fast_idle_extension, &extension_id); |
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| 206 | if (rc != RTEMS_SUCCESSFUL) |
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| 207 | rtems_fatal_error_occurred(rc); |
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| 208 | } |
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| 209 | #endif |
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| 210 | |
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| 211 | |
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| 212 | #ifdef STACK_CHECKER_ON |
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| 213 | /* |
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| 214 | * Initialize the stack bounds checker |
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| 215 | * We can either turn it on here or from the app. |
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| 216 | */ |
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| 217 | |
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| 218 | Stack_check_Initialize(); |
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| 219 | #endif |
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| 220 | } |
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| 221 | |
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| 222 | /* |
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| 223 | * Function: bsp_start |
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| 224 | * Created: 94/12/6 |
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| 225 | * |
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| 226 | * Description: |
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| 227 | * called by crt0 as our "main" equivalent |
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| 228 | * |
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| 229 | * |
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| 230 | * |
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| 231 | * Parameters: |
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| 232 | * |
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| 233 | * |
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| 234 | * Returns: |
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| 235 | * |
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| 236 | * |
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| 237 | * Side Effects: |
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| 238 | * |
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| 239 | * |
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| 240 | * Notes: |
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| 241 | * |
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| 242 | * |
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| 243 | * Deficiencies/ToDo: |
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| 244 | * |
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| 245 | * |
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| 246 | */ |
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| 247 | |
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| 248 | |
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| 249 | void |
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| 250 | bsp_start(void) |
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| 251 | { |
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| 252 | /* |
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| 253 | * Set cpu_number to accurately reflect our cpu number |
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| 254 | */ |
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| 255 | |
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| 256 | #ifdef hppa7200 |
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| 257 | /* |
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[88d594a] | 258 | * Use HPPA_DR0 if supported |
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[ac7d5ef0] | 259 | */ |
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| 260 | { |
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| 261 | int dr0; |
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[88d594a] | 262 | HPPA_ASM_MFCPU(HPPA_DR0, dr0); |
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[ac7d5ef0] | 263 | cpu_number = (dr0 >> 4) & 0x7; |
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| 264 | } |
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| 265 | #else |
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| 266 | if (Configuration.User_multiprocessing_table) |
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| 267 | cpu_number = Configuration.User_multiprocessing_table->node - 1; |
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| 268 | else |
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| 269 | cpu_number = 0; |
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| 270 | #endif |
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| 271 | |
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| 272 | /* |
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| 273 | * Copy the table |
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| 274 | */ |
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| 275 | |
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| 276 | BSP_Configuration = Configuration; |
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| 277 | |
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| 278 | BSP_Configuration.work_space_start = (void *)MY_WORK_SPACE; |
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| 279 | if (BSP_Configuration.work_space_size) |
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| 280 | BSP_Configuration.work_space_size = WORKSPACE_SIZE; |
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| 281 | |
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| 282 | /* |
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| 283 | * Set up our hooks |
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| 284 | * Make sure libc_init is done before drivers init'd so that |
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| 285 | * they can use atexit() |
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| 286 | */ |
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| 287 | |
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| 288 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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| 289 | |
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| 290 | Cpu_table.predriver_hook = NULL; |
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| 291 | |
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| 292 | Cpu_table.postdriver_hook = NULL; |
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| 293 | |
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| 294 | Cpu_table.idle_task = NULL; /* do not override system IDLE task */ |
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| 295 | |
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| 296 | /* |
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| 297 | * Don't zero out the workspace. The simulator did it for us. |
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| 298 | */ |
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| 299 | |
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| 300 | Cpu_table.do_zero_of_workspace = FALSE; |
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| 301 | |
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| 302 | Cpu_table.interrupt_stack_size = (12 * 1024); |
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| 303 | |
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| 304 | Cpu_table.extra_system_initialization_stack = 0; |
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| 305 | |
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| 306 | /* |
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| 307 | * Set this artificially low for the simulator |
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| 308 | */ |
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| 309 | |
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| 310 | Cpu_table.itimer_clicks_per_microsecond = 1; |
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| 311 | |
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| 312 | /* |
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| 313 | * Determine the external interrupt processing order |
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| 314 | * the external interrupt handler walks thru this table, in |
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| 315 | * order checking for posted interrupts. |
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| 316 | */ |
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| 317 | |
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| 318 | Cpu_table.external_interrupts = 0; |
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| 319 | |
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| 320 | Cpu_table.external_interrupt[ Cpu_table.external_interrupts ] = |
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| 321 | HPPA_INTERRUPT_EXTERNAL_INTERVAL_TIMER - HPPA_INTERRUPT_EXTERNAL_BASE; |
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| 322 | Cpu_table.external_interrupts++; |
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| 323 | |
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| 324 | if ( Configuration.User_multiprocessing_table ) { |
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| 325 | Cpu_table.external_interrupt[ Cpu_table.external_interrupts ] = |
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| 326 | HPPA_INTERRUPT_EXTERNAL_10 - HPPA_INTERRUPT_EXTERNAL_BASE; |
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| 327 | Cpu_table.external_interrupts++; |
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| 328 | } |
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| 329 | |
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| 330 | /* |
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| 331 | * Add 1 region for RTEMS Malloc |
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| 332 | */ |
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| 333 | |
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| 334 | BSP_Configuration.maximum_regions++; |
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| 335 | |
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| 336 | #ifdef RTEMS_NEWLIB |
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| 337 | /* |
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| 338 | * Add 1 extension for newlib libc |
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| 339 | */ |
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| 340 | |
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| 341 | BSP_Configuration.maximum_extensions++; |
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| 342 | #endif |
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| 343 | |
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| 344 | #ifdef STACK_CHECKER_ON |
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| 345 | /* |
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| 346 | * Add 1 extension for stack checker |
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| 347 | */ |
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| 348 | |
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| 349 | BSP_Configuration.maximum_extensions++; |
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| 350 | #endif |
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| 351 | |
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| 352 | #if SIMHPPA_FAST_IDLE |
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| 353 | /* |
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| 354 | * Add 1 extension for fast idle |
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| 355 | */ |
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| 356 | |
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| 357 | BSP_Configuration.maximum_extensions++; |
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| 358 | #endif |
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| 359 | |
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| 360 | /* |
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| 361 | * Add 1 extension for MPCI_fatal |
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| 362 | */ |
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| 363 | |
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| 364 | if (BSP_Configuration.User_multiprocessing_table) |
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| 365 | BSP_Configuration.maximum_extensions++; |
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| 366 | |
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| 367 | /* |
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| 368 | * Set the "clicks per tick" for the simulator |
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| 369 | * used by libcpu/hppa/clock/clock.c to schedule interrupts |
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| 370 | * |
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| 371 | * Set it only if 0 to allow for simulator setting it via script |
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| 372 | * on test startup. |
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| 373 | */ |
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| 374 | |
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| 375 | if (CPU_HPPA_CLICKS_PER_TICK == 0) |
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| 376 | CPU_HPPA_CLICKS_PER_TICK = 0x4000; |
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| 377 | |
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| 378 | /* |
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| 379 | * Start most of RTEMS |
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| 380 | * main() will start the rest |
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| 381 | */ |
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| 382 | |
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| 383 | bsp_isr_level = rtems_initialize_executive_early( |
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| 384 | &BSP_Configuration, |
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| 385 | &Cpu_table |
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| 386 | ); |
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| 387 | } |
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