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 | * COPYRIGHT (c) 1989-1999. |
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13 | * On-Line Applications Research Corporation (OAR). |
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14 | * |
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15 | * The license and distribution terms for this file may be |
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16 | * found in the file LICENSE in this distribution or at |
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17 | * http://www.OARcorp.com/rtems/license.html. |
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18 | * |
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19 | * $Id$ |
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20 | */ |
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21 | |
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22 | #include <bsp.h> |
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23 | #include <rtems/libio.h> |
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24 | |
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25 | #include <libcsupport.h> |
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26 | |
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27 | #include <string.h> |
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28 | |
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29 | |
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30 | /* |
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31 | * The original table from the application and our copy of it with |
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32 | * some changes. |
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33 | */ |
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34 | |
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35 | extern rtems_configuration_table Configuration; |
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36 | rtems_configuration_table BSP_Configuration; |
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37 | |
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38 | rtems_cpu_table Cpu_table; |
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39 | |
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40 | char *rtems_progname; |
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41 | |
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42 | /* Initialize whatever libc we are using |
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43 | * called from postdriver hook |
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44 | */ |
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45 | void bsp_postdriver_hook(void); |
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46 | void bsp_libc_init( void *, unsigned32, int ); |
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47 | void bsp_pretasking_hook(void); /* m68k version */ |
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48 | |
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49 | /* |
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50 | * bsp_start |
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51 | * |
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52 | * This routine does the bulk of the system initialization. |
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53 | */ |
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54 | |
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55 | void bsp_start( void ) |
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56 | { |
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57 | extern void *_WorkspaceBase; |
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58 | extern void *_RamSize; |
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59 | extern unsigned long _M68k_Ramsize; |
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60 | |
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61 | _M68k_Ramsize = (unsigned long)&_RamSize; /* RAM size set in linker script */ |
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62 | |
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63 | /* |
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64 | * Allocate the memory for the RTEMS Work Space. This can come from |
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65 | * a variety of places: hard coded address, malloc'ed from outside |
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66 | * RTEMS world (e.g. simulator or primitive memory manager), or (as |
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67 | * typically done by stock BSPs) by subtracting the required amount |
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68 | * of work space from the last physical address on the CPU board. |
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69 | */ |
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70 | #if 0 |
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71 | Cpu_table.interrupt_vector_table = (mc68000_isr *) 0/*&M68Kvec*/; |
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72 | #endif |
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73 | |
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74 | /* |
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75 | * Need to "allocate" the memory for the RTEMS Workspace and |
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76 | * tell the RTEMS configuration where it is. This memory is |
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77 | * not malloc'ed. It is just "pulled from the air". |
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78 | */ |
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79 | |
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80 | BSP_Configuration.work_space_start = (void *)&_WorkspaceBase; |
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81 | |
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82 | /* |
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83 | * Account for the console's resources |
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84 | */ |
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85 | |
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86 | console_reserve_resources( &BSP_Configuration ); |
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87 | |
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88 | /* |
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89 | * initialize the CPU table for this BSP |
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90 | */ |
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91 | |
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92 | Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ |
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93 | Cpu_table.postdriver_hook = bsp_postdriver_hook; |
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94 | Cpu_table.do_zero_of_workspace = TRUE; |
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95 | Cpu_table.interrupt_stack_size = 4096; |
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96 | } |
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