[4a238002] | 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 | * Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and |
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| 8 | * Bernd Becker (becker@faw.uni-ulm.de) |
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| 9 | * |
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| 10 | * COPYRIGHT (c) 1997-1998, FAW Ulm, Germany |
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| 11 | * |
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| 12 | * This program is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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| 15 | * |
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| 16 | * |
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| 17 | * COPYRIGHT (c) 1998. |
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| 18 | * On-Line Applications Research Corporation (OAR). |
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| 19 | * |
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| 20 | * The license and distribution terms for this file may be |
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| 21 | * found in the file LICENSE in this distribution or at |
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[5e1b695] | 22 | * http://www.rtems.com/license/LICENSE. |
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[4a238002] | 23 | * |
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| 24 | * $Id$ |
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| 25 | */ |
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| 26 | |
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[eba2e4f] | 27 | #include <string.h> |
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| 28 | |
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[4a238002] | 29 | #include <bsp.h> |
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| 30 | #include <rtems/libio.h> |
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[eba2e4f] | 31 | #include <rtems/libcsupport.h> |
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[0fdc099] | 32 | |
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[26d47f8] | 33 | uint32_t bsp_clicks_per_second; |
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| 34 | |
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[df49c60] | 35 | extern void bsp_hw_init(void); |
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[4a238002] | 36 | |
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| 37 | /* |
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| 38 | * Use the shared implementations of the following routines |
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| 39 | */ |
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[0fdc099] | 40 | |
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[8cf4fac5] | 41 | void bsp_libc_init( void *, uint32_t, int ); |
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[4a238002] | 42 | |
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| 43 | /* |
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| 44 | * Function: bsp_pretasking_hook |
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| 45 | * |
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| 46 | * Description: |
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| 47 | * BSP pretasking hook. Called just before drivers are initialized. |
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| 48 | * Used to setup libc and install any BSP extensions. |
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| 49 | * |
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| 50 | * NOTES: |
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| 51 | * Must not use libc (to do io) from here, since drivers are |
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| 52 | * not yet initialized. |
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| 53 | * |
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| 54 | */ |
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[0fdc099] | 55 | |
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[4a238002] | 56 | void bsp_pretasking_hook(void) |
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| 57 | { |
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[536f5f94] | 58 | bsp_libc_init(&HeapStart, (char *)&HeapEnd - (char *)&HeapStart, 0); |
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[4a238002] | 59 | } |
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| 60 | |
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| 61 | /* |
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| 62 | * bsp_start |
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| 63 | * |
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| 64 | * This routine does the bulk of the system initialization. |
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| 65 | */ |
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| 66 | |
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| 67 | void bsp_start(void) |
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| 68 | { |
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| 69 | /* |
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[0fdc099] | 70 | For real boards you need to setup the hardware |
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[4a238002] | 71 | and need to copy the vector table from rom to ram. |
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| 72 | |
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[0fdc099] | 73 | Depending on the board this can ether be done from inside the rom |
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[4a238002] | 74 | startup code, rtems startup code or here. |
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| 75 | */ |
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[8b91282] | 76 | |
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| 77 | #ifndef START_HW_INIT |
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| 78 | /* board hardware setup here, or from 'start.S' */ |
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[df49c60] | 79 | bsp_hw_init(); |
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[8b91282] | 80 | #endif |
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[4a238002] | 81 | |
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| 82 | /* |
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| 83 | * Allocate the memory for the RTEMS Work Space. This can come from |
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| 84 | * a variety of places: hard coded address, malloc'ed from outside |
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| 85 | * RTEMS world (e.g. simulator or primitive memory manager), or (as |
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| 86 | * typically done by stock BSPs) by subtracting the required amount |
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| 87 | * of work space from the last physical address on the CPU board. |
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| 88 | */ |
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| 89 | |
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| 90 | /* |
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| 91 | * Need to "allocate" the memory for the RTEMS Workspace and |
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| 92 | * tell the RTEMS configuration where it is. This memory is |
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| 93 | * not malloc'ed. It is just "pulled from the air". |
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| 94 | */ |
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| 95 | |
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[4130d8e2] | 96 | Configuration.work_space_start = (void *) &WorkSpaceStart ; |
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| 97 | rtems_configuration_get_work_space_size() = |
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[8cf4fac5] | 98 | &WorkSpaceEnd - &WorkSpaceStart ; |
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[0fdc099] | 99 | |
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[4a238002] | 100 | /* |
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| 101 | * initialize the CPU table for this BSP |
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| 102 | */ |
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| 103 | |
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| 104 | #if ( CPU_ALLOCATE_INTERRUPT_STACK == FALSE ) |
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| 105 | _CPU_Interrupt_stack_low = &CPU_Interrupt_stack_low ; |
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| 106 | _CPU_Interrupt_stack_high = &CPU_Interrupt_stack_high ; |
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| 107 | #endif |
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| 108 | |
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[d34d8692] | 109 | /* |
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| 110 | * initialize the device driver parameters |
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| 111 | */ |
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[26d47f8] | 112 | bsp_clicks_per_second = CPU_CLOCK_RATE_HZ; |
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[4a238002] | 113 | } |
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