[b6394ae] | 1 | /* |
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[ac7d5ef0] | 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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[08311cc3] | 7 | * COPYRIGHT (c) 1989-1999. |
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[ac7d5ef0] | 8 | * On-Line Applications Research Corporation (OAR). |
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| 9 | * |
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[98e4ebf5] | 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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[03f2154e] | 12 | * http://www.OARcorp.com/rtems/license.html. |
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[ac7d5ef0] | 13 | * |
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| 14 | * $Id$ |
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| 15 | */ |
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| 16 | |
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| 17 | #include <bsp.h> |
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[3a4ae6c] | 18 | #include <rtems/libio.h> |
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| 19 | |
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[ac7d5ef0] | 20 | #include <libcsupport.h> |
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[81d96577] | 21 | #include <zilog/z8036.h> |
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[ac7d5ef0] | 22 | |
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[3a4ae6c] | 23 | #include <string.h> |
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| 24 | |
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[ac7d5ef0] | 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 | rtems_configuration_table BSP_Configuration; |
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| 32 | |
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| 33 | rtems_cpu_table Cpu_table; |
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| 34 | |
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[3a4ae6c] | 35 | char *rtems_progname; |
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| 36 | |
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[b6394ae] | 37 | /* |
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| 38 | * Use the shared implementations of the following routines |
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[ac7d5ef0] | 39 | */ |
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[b6394ae] | 40 | |
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| 41 | void bsp_postdriver_hook(void); |
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| 42 | void bsp_libc_init( void *, unsigned32, int ); |
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[b8c9883] | 43 | void bsp_pretasking_hook(void); /* m68k version */ |
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[b6394ae] | 44 | |
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[3a4ae6c] | 45 | /* |
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[b6394ae] | 46 | * bsp_start |
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| 47 | * |
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| 48 | * This routine does the bulk of the system initialization. |
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[3a4ae6c] | 49 | */ |
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| 50 | |
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[e2a2ec60] | 51 | void bsp_start( void ) |
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[ac7d5ef0] | 52 | { |
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[497428a2] | 53 | m68k_isr_entry *monitors_vector_table; |
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| 54 | int index; |
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[df49c60] | 55 | extern void *_WorkspaceBase; |
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| 56 | extern void *_RamSize; |
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| 57 | extern unsigned long _M68k_Ramsize; |
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| 58 | |
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| 59 | _M68k_Ramsize = (unsigned long)&_RamSize; /* RAM size set in linker script */ |
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[ac7d5ef0] | 60 | |
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[497428a2] | 61 | monitors_vector_table = (m68k_isr_entry *)0; /* 135Bug Vectors are at 0 */ |
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[ac7d5ef0] | 62 | m68k_set_vbr( monitors_vector_table ); |
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| 63 | |
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| 64 | for ( index=2 ; index<=255 ; index++ ) |
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| 65 | M68Kvec[ index ] = monitors_vector_table[ 32 ]; |
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| 66 | |
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| 67 | M68Kvec[ 2 ] = monitors_vector_table[ 2 ]; /* bus error vector */ |
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| 68 | M68Kvec[ 4 ] = monitors_vector_table[ 4 ]; /* breakpoints vector */ |
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| 69 | M68Kvec[ 9 ] = monitors_vector_table[ 9 ]; /* trace vector */ |
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| 70 | M68Kvec[ 47 ] = monitors_vector_table[ 47 ]; /* system call vector */ |
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| 71 | |
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| 72 | m68k_set_vbr( &M68Kvec ); |
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| 73 | |
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| 74 | (*(rtems_unsigned8 *)0xfffb0067) = 0x7f; /* make VME access round-robin */ |
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| 75 | |
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[5e77d129] | 76 | rtems_cache_enable_instruction(); |
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[ac7d5ef0] | 77 | |
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| 78 | /* |
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| 79 | * we only use a hook to get the C library initialized. |
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| 80 | */ |
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| 81 | |
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[3652ad35] | 82 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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[3a4ae6c] | 83 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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[497428a2] | 84 | Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec; |
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[df49c60] | 85 | Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY; |
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[ac7d5ef0] | 86 | |
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[b8c9883] | 87 | BSP_Configuration.work_space_start = (void *) &_WorkspaceBase; |
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[ac7d5ef0] | 88 | } |
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