[862c2317] | 1 | /* bsp_start() |
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| 2 | * |
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| 3 | * This routine 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 this routine is invoked. |
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| 7 | * |
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| 8 | * INPUT: NONE |
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| 9 | * |
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| 10 | * OUTPUT: NONE |
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| 11 | * |
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| 12 | * Author: Thomas Doerfler <td@imd.m.isar.de> |
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| 13 | * IMD Ingenieurbuero fuer Microcomputertechnik |
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| 14 | * |
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| 15 | * COPYRIGHT (c) 1998 by IMD |
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| 16 | * |
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| 17 | * Changes from IMD are covered by the original distributions terms. |
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| 18 | * This file has been derived from the papyrus BSP: |
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| 19 | * |
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| 20 | * Author: Andrew Bray <andy@i-cubed.co.uk> |
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| 21 | * |
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| 22 | * COPYRIGHT (c) 1995 by i-cubed ltd. |
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| 23 | * |
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| 24 | * To anyone who acknowledges that this file is provided "AS IS" |
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| 25 | * without any express or implied warranty: |
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| 26 | * permission to use, copy, modify, and distribute this file |
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| 27 | * for any purpose is hereby granted without fee, provided that |
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| 28 | * the above copyright notice and this notice appears in all |
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| 29 | * copies, and that the name of i-cubed limited not be used in |
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| 30 | * advertising or publicity pertaining to distribution of the |
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| 31 | * software without specific, written prior permission. |
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| 32 | * i-cubed limited makes no representations about the suitability |
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| 33 | * of this software for any purpose. |
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| 34 | * |
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| 35 | * Modifications for spooling console driver and control of memory layout |
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| 36 | * with linker command file by |
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| 37 | * Thomas Doerfler <td@imd.m.isar.de> |
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| 38 | * for these modifications: |
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| 39 | * COPYRIGHT (c) 1997 by IMD, Puchheim, Germany. |
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| 40 | * |
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| 41 | * To anyone who acknowledges that this file is provided "AS IS" |
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| 42 | * without any express or implied warranty: |
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| 43 | * permission to use, copy, modify, and distribute this file |
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| 44 | * for any purpose is hereby granted without fee, provided that |
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| 45 | * the above copyright notice and this notice appears in all |
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| 46 | * copies. IMD makes no representations about the suitability |
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| 47 | * of this software for any purpose. |
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| 48 | * |
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| 49 | * Derived from c/src/lib/libbsp/no_cpu/no_bsp/startup/bspstart.c: |
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| 50 | * |
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| 51 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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| 52 | * On-Line Applications Research Corporation (OAR). |
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| 53 | * |
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| 54 | * Modifications for PPC405GP by Dennis Ehlin |
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| 55 | */ |
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[a86f3aac] | 56 | |
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[862c2317] | 57 | #include <bsp.h> |
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| 58 | #include <bsp/irq.h> |
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[39c1534f] | 59 | #include <bsp/irq-generic.h> |
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[894e93f] | 60 | #include <bsp/bootcard.h> |
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[0ba2736] | 61 | #include <bsp/linker-symbols.h> |
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[894e93f] | 62 | |
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| 63 | #include <libcpu/powerpc-utility.h> |
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[862c2317] | 64 | |
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| 65 | #include RTEMS_XPARAMETERS_H |
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| 66 | |
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[0ba2736] | 67 | /* Symbols defined in linker command file */ |
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| 68 | LINKER_SYMBOL(virtex_exc_vector_base); |
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| 69 | |
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[07e9642c] | 70 | /* |
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| 71 | * Driver configuration parameters |
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| 72 | */ |
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| 73 | uint32_t bsp_clicks_per_usec; |
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| 74 | |
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[862c2317] | 75 | /* |
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| 76 | * bsp_start |
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| 77 | * |
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| 78 | * This routine does the bulk of the system initialization. |
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| 79 | */ |
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| 80 | void bsp_start( void ) |
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| 81 | { |
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| 82 | /* |
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[ac7af4a] | 83 | * Get CPU identification dynamically. Note that the get_ppc_cpu_type() |
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| 84 | * function store the result in global variables |
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[862c2317] | 85 | * so that it can be used latter... |
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| 86 | */ |
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[ad094f4] | 87 | get_ppc_cpu_type(); |
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| 88 | get_ppc_cpu_revision(); |
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[d34d8692] | 89 | |
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[862c2317] | 90 | /* |
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[d34d8692] | 91 | * initialize the device driver parameters |
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[862c2317] | 92 | */ |
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| 93 | |
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| 94 | /* timebase register ticks/microsecond */ |
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[07e9642c] | 95 | bsp_clicks_per_usec = (250000000 / 1000000); |
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[862c2317] | 96 | |
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| 97 | /* |
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[ac7af4a] | 98 | * Initialize default raw exception handlers. |
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[862c2317] | 99 | */ |
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[0ba2736] | 100 | ppc_exc_initialize_with_vector_base( |
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[2d2de4eb] | 101 | PPC_INTERRUPT_DISABLE_MASK_DEFAULT, |
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[0ba2736] | 102 | (uintptr_t) bsp_section_work_begin, |
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| 103 | rtems_configuration_get_interrupt_stack_size(), |
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| 104 | virtex_exc_vector_base |
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[336495b9] | 105 | ); |
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[0ba2736] | 106 | __asm__ volatile ("mtevpr %0" : : "r" (virtex_exc_vector_base)); |
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[862c2317] | 107 | |
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[39c1534f] | 108 | bsp_interrupt_initialize(); |
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[862c2317] | 109 | } |
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| 110 | |
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[53dc697] | 111 | void _BSP_Fatal_error(unsigned int v) |
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[862c2317] | 112 | { |
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[53dc697] | 113 | rtems_interrupt_level level; |
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[862c2317] | 114 | |
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[53dc697] | 115 | rtems_interrupt_disable(level); |
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| 116 | (void) level; |
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[862c2317] | 117 | |
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[53dc697] | 118 | while (true) { |
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| 119 | /* Do nothing */ |
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| 120 | } |
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[862c2317] | 121 | } |
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