source: rtems/c/src/lib/libbsp/unix/posix/startup/bspstart.c @ eba2e4f

4.104.114.84.9
Last change on this file since eba2e4f was eba2e4f, checked in by Joel Sherrill <joel.sherrill@…>, on Nov 1, 2000 at 9:19:23 PM

2000-11-01 Joel Sherrill <joel@…>

  • startup/bspstart.c: assoc.h, error.h, libio_.h, libio.h, and libcsupport.h moved from libc to lib/include/rtems and now must be referenced as <rtems/XXX.h>. Header file order was cleaned up while doing this.
  • Property mode set to 100644
File size: 5.5 KB
Line 
1/*
2 *  This routine starts the application.  It includes application,
3 *  board, and monitor specific initialization and configuration.
4 *  The generic CPU dependent initialization has been performed
5 *  before this routine is invoked.
6 *
7 *  Called by RTEMS::RTEMS constructor in startup-ctor.cc
8 *
9 *  COPYRIGHT (c) 1989-1999.
10 *  On-Line Applications Research Corporation (OAR).
11 *
12 *  The license and distribution terms for this file may be
13 *  found in the file LICENSE in this distribution or at
14 *  http://www.OARcorp.com/rtems/license.html.
15 *
16 *  $Id$
17 */
18
19#include <stdio.h>
20#include <stdlib.h>
21#include <unistd.h>
22
23#include <bsp.h>
24#include <rtems/libcsupport.h>
25#include <rtems/libio.h>
26
27extern rtems_configuration_table  Configuration;
28
29/*
30 * A copy of the configuration table from the application
31 * with some changes applied to it.
32 */
33
34rtems_configuration_table    BSP_Configuration;
35rtems_multiprocessing_table  BSP_Multiprocessing;
36rtems_cpu_table              Cpu_table;
37rtems_unsigned32             bsp_isr_level;
38rtems_unsigned32             Heap_size;
39int                          rtems_argc;
40char                       **rtems_argv;
41
42/*
43 * May be overridden by RTEMS_WORKSPACE_SIZE and RTEMS_HEAPSPACE_SIZE
44 * environment variables; see below.
45 */
46
47#define DEFAULT_WORKSPACE_SIZE (WORKSPACE_MB * (1024 * 1024))
48#define DEFAULT_HEAPSPACE_SIZE (HEAPSPACE_MB * (1024 * 1024))
49
50/*
51 * Amount to increment itimer by each pass
52 * It is a variable instead of a #define to allow the 'looptest'
53 * script to bump it without recompiling rtems
54 */
55
56rtems_unsigned32 CPU_CLICKS_PER_TICK;
57
58/*
59 *  Use the shared implementations of the following routines
60 */
61 
62void bsp_postdriver_hook(void);
63void bsp_libc_init( void *, unsigned32, int );
64
65/*
66 *  Function:   bsp_pretasking_hook
67 *  Created:    95/03/10
68 *
69 *  Description:
70 *      BSP pretasking hook.  Called just before drivers are initialized.
71 *      Used to setup libc and install any BSP extensions.
72 *
73 *  NOTES:
74 *      Must not use libc (to do io) from here, since drivers are
75 *      not yet initialized.
76 */
77
78void bsp_pretasking_hook(void)
79{
80    void *heap_start;
81
82    if (getenv("RTEMS_HEAPSPACE_SIZE"))
83        Heap_size = strtol(getenv("RTEMS_HEAPSPACE_SIZE"), 0, 0);
84    else
85        Heap_size = DEFAULT_HEAPSPACE_SIZE;
86 
87    heap_start = 0;
88
89    bsp_libc_init((void *)heap_start, Heap_size, 1024 * 1024);
90
91
92#ifdef RTEMS_DEBUG
93    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
94#endif
95
96    /*
97     * Dump malloc stats on exit...
98     */
99#if defined(RTEMS_DEBUG)
100  atexit(malloc_dump);
101#endif
102}
103
104/*
105 *  DO NOT Use the shared bsp_postdriver_hook() implementation
106 */
107 
108void bsp_postdriver_hook(void)
109{
110  return;
111}
112
113/*
114 *  bsp_start
115 *
116 *  This routine does the bulk of the system initialization.
117 */
118
119void bsp_start(void)
120{
121    unsigned32 workspace_ptr;
122
123    /*
124     *  Copy the table (normally done in shared main).
125     */
126
127    BSP_Configuration = Configuration;
128 
129    /*
130     *  If the node number is -1 then the application better provide
131     *  it through environment variables RTEMS_NODE.
132     *  Ditto for RTEMS_MAXIMUM_NODES
133     */
134
135    if (BSP_Configuration.User_multiprocessing_table) {
136        char *p;
137 
138        /* make a copy for possible editing */
139        BSP_Multiprocessing = *BSP_Configuration.User_multiprocessing_table;
140        BSP_Configuration.User_multiprocessing_table = &BSP_Multiprocessing;
141 
142        if (BSP_Multiprocessing.node == -1)
143        {
144            p = getenv("RTEMS_NODE");
145            BSP_Multiprocessing.node = p ? atoi(p) : 1;
146        }
147 
148        /* If needed provide maximum_nodes also */
149        if (BSP_Multiprocessing.maximum_nodes == -1)
150        {
151            p = getenv("RTEMS_MAXIMUM_NODES");
152            BSP_Multiprocessing.maximum_nodes = p ? atoi(p) : 1;
153        }
154    }
155
156    /*
157     * Set cpu_number to accurately reflect our cpu number
158     */
159
160    if (BSP_Configuration.User_multiprocessing_table)
161        cpu_number = BSP_Configuration.User_multiprocessing_table->node - 1;
162    else
163        cpu_number = 0;
164
165    if (getenv("RTEMS_WORKSPACE_SIZE"))
166        BSP_Configuration.work_space_size = 
167           strtol(getenv("RTEMS_WORKSPACE_SIZE"), 0, 0);
168    else
169        BSP_Configuration.work_space_size = DEFAULT_WORKSPACE_SIZE;
170 
171    /*
172     * Allocate workspace memory, ensuring it is properly aligned
173     */
174 
175    workspace_ptr = 
176      (unsigned32) sbrk(BSP_Configuration.work_space_size + CPU_ALIGNMENT);
177    workspace_ptr += CPU_ALIGNMENT - 1;
178    workspace_ptr &= ~(CPU_ALIGNMENT - 1);
179
180    BSP_Configuration.work_space_start = (void *) workspace_ptr;
181 
182    /*
183     * Set up our hooks
184     * Make sure libc_init is done before drivers init'd so that
185     * they can use atexit()
186     */
187
188    Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
189
190    Cpu_table.predriver_hook = NULL;
191
192    Cpu_table.postdriver_hook = bsp_postdriver_hook;
193
194    Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
195
196    /*
197     *  Don't zero out the workspace since it is in the BSS under UNIX.
198     */
199
200    Cpu_table.do_zero_of_workspace = FALSE;
201
202    /*
203     * XXX; interrupt stack not currently used, so this doesn't matter
204     */
205
206    Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
207
208    Cpu_table.extra_mpci_receive_server_stack = 0;
209
210    /*
211     * Add 1 extension for MPCI_fatal
212     */
213
214    if (BSP_Configuration.User_multiprocessing_table)
215        BSP_Configuration.maximum_extensions++;
216
217    CPU_CLICKS_PER_TICK = 1;
218
219    /*
220     *  Start most of RTEMS
221     *  main() will start the rest
222     */
223
224    bsp_isr_level = rtems_initialize_executive_early(
225      &BSP_Configuration,
226      &Cpu_table
227    );
228}
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