1 | /* |
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2 | * This routine starts the application. It includes application, |
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3 | * board, and monitor specific initialization and configuration. |
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4 | * The generic CPU dependent initialization has been performed |
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5 | * before this routine is invoked. |
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6 | * |
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7 | * COPYRIGHT (c) 1989-1999. |
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8 | * On-Line Applications Research Corporation (OAR). |
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9 | * |
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10 | * The license and distribution terms for this file may be |
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11 | * found in the file LICENSE in this distribution or at |
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12 | * http://www.OARcorp.com/rtems/license.html. |
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13 | * |
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14 | * $Id$ |
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15 | */ |
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16 | |
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17 | #include <string.h> |
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18 | |
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19 | #define C961_INIT |
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20 | |
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21 | #include <bsp.h> |
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22 | #include <rtems/libio.h> |
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23 | #include <rtems/libcsupport.h> |
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24 | |
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25 | /* |
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26 | * The original table from the application and our copy of it with |
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27 | * some changes. |
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28 | */ |
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29 | |
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30 | extern rtems_configuration_table Configuration; |
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31 | |
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32 | rtems_configuration_table BSP_Configuration; |
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33 | |
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34 | rtems_cpu_table Cpu_table; |
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35 | |
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36 | char *rtems_progname; |
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37 | |
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38 | /* |
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39 | * Use the shared implementations of the following routines |
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40 | */ |
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41 | |
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42 | void bsp_postdriver_hook(void); |
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43 | void bsp_libc_init( void *, unsigned32, int ); |
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44 | |
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45 | /* |
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46 | * Function: bsp_pretasking_hook |
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47 | * Created: 95/03/10 |
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48 | * |
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49 | * Description: |
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50 | * BSP pretasking hook. Called just before drivers are initialized. |
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51 | * Used to setup libc and install any BSP extensions. |
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52 | * |
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53 | * NOTES: |
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54 | * Must not use libc (to do io) from here, since drivers are |
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55 | * not yet initialized. |
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56 | * |
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57 | */ |
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58 | |
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59 | void bsp_pretasking_hook(void) |
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60 | { |
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61 | extern int end; |
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62 | rtems_unsigned32 heap_start; |
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63 | |
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64 | heap_start = (rtems_unsigned32) &end; |
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65 | if (heap_start & (CPU_ALIGNMENT-1)) |
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66 | heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); |
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67 | |
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68 | bsp_libc_init((void *) heap_start, 64 * 1024, 0); |
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69 | |
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70 | #ifdef RTEMS_DEBUG |
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71 | rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); |
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72 | #endif |
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73 | } |
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74 | |
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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 | |
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81 | void bsp_start( void ) |
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82 | { |
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83 | /* set node number in SQSIO4 CTL REG */ |
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84 | |
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85 | *((rtems_unsigned32 *)0xc00000b0) = |
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86 | (Configuration.User_multiprocessing_table) ? |
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87 | Configuration.User_multiprocessing_table->node : 0; |
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88 | |
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89 | Prcb = get_prcb(); |
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90 | Ctl_tbl = Prcb->control_tbl; |
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91 | |
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92 | /* following configures the data breakpoint (which must be set |
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93 | * before this is executed) to break on writes only. |
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94 | */ |
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95 | |
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96 | Ctl_tbl->bpcon &= ~0x00cc0000; |
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97 | i960_reload_ctl_group( 6 ); |
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98 | |
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99 | /* bit 31 of the Register Cache Control can be set to |
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100 | * enable an alternative caching algorithm. It does |
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101 | * not appear to help RTEMS. |
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102 | */ |
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103 | |
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104 | /* Configure Number of Register Caches */ |
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105 | |
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106 | Prcb->reg_cache_cfg = 8; |
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107 | i960_soft_reset( Prcb ); |
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108 | |
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109 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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110 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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111 | Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY; |
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112 | |
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113 | BSP_Configuration.work_space_start = (void *) |
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114 | (RAM_END - BSP_Configuration.work_space_size); |
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115 | } |
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