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Diffstat (limited to 'c/src/lib/libbsp/unix/posix/startup/bspstart.c')
| -rw-r--r-- | c/src/lib/libbsp/unix/posix/startup/bspstart.c | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/unix/posix/startup/bspstart.c b/c/src/lib/libbsp/unix/posix/startup/bspstart.c new file mode 100644 index 0000000000..a2ec1b1911 --- /dev/null +++ b/c/src/lib/libbsp/unix/posix/startup/bspstart.c @@ -0,0 +1,314 @@ +/* + * @(#)bspstart.c 1.7 - 95/04/07 + * + */ + +/* bsp_start() + * + * This routine starts the application. It includes application, + * board, and monitor specific initialization and configuration. + * The generic CPU dependent initialization has been performed + * before this routine is invoked. + * + * Called by RTEMS::RTEMS constructor in startup-ctor.cc + * + * INPUT: NONE + * + * OUTPUT: NONE + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * All rights assigned to U.S. Government, 1994. + * + * This material may be reproduced by or for the U.S. Government pursuant + * to the copyright license under the clause at DFARS 252.227-7013. This + * notice must appear in all copies of this file and its derivatives. + * + * $Id$ + */ + +#include <rtems.h> + +#include <stdio.h> +#include <stdlib.h> +#include <fcntl.h> +#include <unistd.h> +#include <sys/stat.h> + +#include <bsp.h> +#include <libcsupport.h> + +#ifdef STACK_CHECKER_ON +#include <stackchk.h> +#endif + +extern rtems_configuration_table Configuration; + +/* + * A copy of the configuration table from the application + * with some changes applied to it. + */ + +rtems_configuration_table BSP_Configuration; +rtems_multiprocessing_table BSP_Multiprocessing; +rtems_cpu_table Cpu_table; +rtems_unsigned32 bsp_isr_level; +rtems_unsigned32 Heap_size; +int rtems_argc; +char **rtems_argv; +char **rtems_envp; + + +#define WORKSPACE_SIZE (WORKSPACE_MB * (1024 * 1024)) +#define HEAPSPACE_SIZE (HEAPSPACE_MB * (1024 * 1024)) + +rtems_unsigned8 MY_WORK_SPACE[ WORKSPACE_SIZE ] CPU_STRUCTURE_ALIGNMENT; + +/* + * Amount to increment itimer by each pass + * It is a variable instead of a #define to allow the 'looptest' + * script to bump it without recompiling rtems + */ + +rtems_unsigned32 CPU_CLICKS_PER_TICK; + +/* + * Function: bsp_libc_init + * Created: 94/12/6 + * + * Description: + * Initialize whatever libc we are using + * called from bsp_postdriver_hook + * + * + * Parameters: + * none + * + * Returns: + * none. + * + * Side Effects: + * + * + * Notes: + * + * Deficiencies/ToDo: + * + * + */ + +void +bsp_libc_init(void) +{ + void *heap_start; + + Heap_size = HEAPSPACE_SIZE; + heap_start = 0; + + RTEMS_Malloc_Initialize((void *)heap_start, Heap_size, 1024 * 1024); + + libc_init(1); +} + + +/* + * Function: bsp_pretasking_hook + * Created: 95/03/10 + * + * Description: + * BSP pretasking hook. Called just before drivers are initialized. + * Used to setup libc and install any BSP extensions. + * + * Parameters: + * none + * + * Returns: + * nada + * + * Side Effects: + * installs a few extensions + * + * Notes: + * Must not use libc (to do io) from here, since drivers are + * not yet initialized. + * + * Deficiencies/ToDo: + * + * + */ + +void +bsp_pretasking_hook(void) +{ + bsp_libc_init(); + +#ifdef STACK_CHECKER_ON + /* + * Initialize the stack bounds checker + * We can either turn it on here or from the app. + */ + + Stack_check_Initialize(); +#endif + +#ifdef RTEMS_DEBUG + rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); +#endif +} + +/* + * Function: bsp_start + * Created: 94/12/6 + * + * Description: + * called by crt0 as our "main" equivalent + * + * + * + * Parameters: + * + * + * Returns: + * + * + * Side Effects: + * + * + * Notes: + * + * + * Deficiencies/ToDo: + * + * + */ + +void +bsp_start(void) +{ + struct stat stat_buf; + char buf[256]; + char node[6]; + char *home; + int fd; + + /* + * Copy the table + */ + + BSP_Configuration = Configuration; + + /* + * If the node number is -1 then the application better provide + * it through the file $HOME/rtems_node + */ + + BSP_Multiprocessing.node = -1; + + if (BSP_Configuration.User_multiprocessing_table) { + if (BSP_Configuration.User_multiprocessing_table->node == -1) { + home = getenv("HOME"); + sprintf(buf, "%s/%s", home, "rtems_node"); + if ((stat(buf, &stat_buf)) == 0) { + fd = open(buf, O_RDONLY); + read(fd, node, 5); + close(fd); + unlink(buf); + BSP_Multiprocessing = *BSP_Configuration.User_multiprocessing_table; + BSP_Multiprocessing.node = atoi(node); + BSP_Configuration.User_multiprocessing_table = &BSP_Multiprocessing; + } + if (BSP_Configuration.User_multiprocessing_table->maximum_nodes == -1) { + home = getenv("HOME"); + sprintf(buf, "%s/%s", home, "rtems_max_node"); + if ((stat(buf, &stat_buf)) == 0) { + fd = open(buf, O_RDONLY); + read(fd, node, 5); + close(fd); + BSP_Multiprocessing.maximum_nodes = atoi(node); + } + } + } + } + + /* + * Set cpu_number to accurately reflect our cpu number + */ + + if (BSP_Configuration.User_multiprocessing_table) + cpu_number = BSP_Configuration.User_multiprocessing_table->node - 1; + else + cpu_number = 0; + + BSP_Configuration.work_space_start = (void *)MY_WORK_SPACE; + if (BSP_Configuration.work_space_size) + BSP_Configuration.work_space_size = WORKSPACE_SIZE; + + /* + * Set up our hooks + * Make sure libc_init is done before drivers init'd so that + * they can use atexit() + */ + + Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ + + Cpu_table.predriver_hook = NULL; + + Cpu_table.postdriver_hook = NULL; + + Cpu_table.idle_task = NULL; /* do not override system IDLE task */ + + /* + * Don't zero out the workspace since it is in the BSS under UNIX. + */ + + Cpu_table.do_zero_of_workspace = FALSE; + + /* + * XXX; interrupt stack not currently used, so this doesn't matter + */ + + Cpu_table.interrupt_stack_size = (12 * 1024); + + Cpu_table.extra_system_initialization_stack = 0; + + /* + * Add 1 region for RTEMS Malloc + */ + + BSP_Configuration.maximum_regions++; + +#ifdef RTEMS_NEWLIB + /* + * Add 1 extension for newlib libc + */ + + BSP_Configuration.maximum_extensions++; +#endif + +#ifdef STACK_CHECKER_ON + /* + * Add 1 extension for stack checker + */ + + BSP_Configuration.maximum_extensions++; +#endif + + /* + * Add 1 extension for MPCI_fatal + */ + + if (BSP_Configuration.User_multiprocessing_table) + BSP_Configuration.maximum_extensions++; + + CPU_CLICKS_PER_TICK = 1; + + /* + * Start most of RTEMS + * main() will start the rest + */ + + bsp_isr_level = rtems_initialize_executive_early( + &BSP_Configuration, + &Cpu_table + ); +} |