diff options
Diffstat (limited to 'c/src/lib/libbsp/m68k/efi332/startup/bspstart.c')
| -rw-r--r-- | c/src/lib/libbsp/m68k/efi332/startup/bspstart.c | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/m68k/efi332/startup/bspstart.c b/c/src/lib/libbsp/m68k/efi332/startup/bspstart.c new file mode 100644 index 0000000000..aac266aac0 --- /dev/null +++ b/c/src/lib/libbsp/m68k/efi332/startup/bspstart.c @@ -0,0 +1,227 @@ +/* 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. + * + * INPUT: NONE + * + * OUTPUT: NONE + * + * COPYRIGHT (c) 1989-1997. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may in + * the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#include <bsp.h> +#include <rtems/libio.h> +#include <libcsupport.h> + +#include <string.h> +#include <fcntl.h> + +#ifdef STACK_CHECKER_ON +#include <stackchk.h> +#endif + +/* + * The original table from the application and our copy of it with + * some changes. + */ + +extern rtems_configuration_table Configuration; +rtems_configuration_table BSP_Configuration; + +rtems_cpu_table Cpu_table; + +char *rtems_progname; + +/* Initialize whatever libc we are using + * called from postdriver hook + */ + +void bsp_libc_init() +{ +/* extern int end; */ + rtems_unsigned32 heap_start; + + heap_start = (rtems_unsigned32) BSP_Configuration.work_space_start + + (rtems_unsigned32) BSP_Configuration.work_space_size; + if (heap_start & (CPU_ALIGNMENT-1)) + heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); + + if (heap_start > (rtems_unsigned32) RAM_END) { + /* rtems_fatal_error_occurred can not be used before initalization */ + RAW_PUTS("\n\rRTEMS: Out of memory.\n\r"); + RAW_PUTS("RTEMS: Check RAM_END and the size of the work space.\n\r"); + } + + RTEMS_Malloc_Initialize((void *) heap_start, + (RAM_END - heap_start), 0); + + /* + * Init the RTEMS libio facility to provide UNIX-like system + * calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc) + * Uses malloc() to get area for the iops, so must be after malloc init + */ + + rtems_libio_init(); + + /* + * Set up for the libc handling. + */ + + if (BSP_Configuration.ticks_per_timeslice > 0) + libc_init(1); /* reentrant if possible */ + else + libc_init(0); /* non-reentrant */ +} + +/* + * 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. + * + * NOTES: + * Must not use libc (to do io) from here, since drivers are + * not yet initialized. + * + */ + +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 +} + + +/* + * After drivers are setup, register some "filenames" + * and open stdin, stdout, stderr files + * + * Newlib will automatically associate the files with these + * (it hardcodes the numbers) + */ + +void +bsp_postdriver_hook(void) +{ + int stdin_fd, stdout_fd, stderr_fd; + int error_code; + + error_code = 'S' << 24 | 'T' << 16; + + if ((stdin_fd = __rtems_open("/dev/console", O_RDONLY, 0)) == -1) + rtems_fatal_error_occurred( error_code | 'D' << 8 | '0' ); + + if ((stdout_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1) + rtems_fatal_error_occurred( error_code | 'D' << 8 | '1' ); + + if ((stderr_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1) + rtems_fatal_error_occurred( error_code | 'D' << 8 | '2' ); + + if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2)) + rtems_fatal_error_occurred( error_code | 'I' << 8 | 'O' ); +} + +int main( + int argc, + char **argv, + char **environp +) +{ + void *vbr; + + /* + * we only use a hook to get the C library initialized. + */ + + Cpu_table.pretasking_hook = bsp_pretasking_hook; + + Cpu_table.predriver_hook = NULL; + + Cpu_table.postdriver_hook = bsp_postdriver_hook; + + Cpu_table.idle_task = NULL; /* do not override system IDLE task */ + + Cpu_table.do_zero_of_workspace = TRUE; + + m68k_get_vbr( vbr ); + Cpu_table.interrupt_vector_table = vbr; + + Cpu_table.interrupt_stack_size = 0; + + Cpu_table.extra_mpci_receive_server_stack = 0; + + /* + * Copy the table + */ + + BSP_Configuration = Configuration; + + BSP_Configuration.work_space_start = (void *) + (((unsigned int)_end + STACK_SIZE + 0x100) & 0xffffff00); + + /* + * Add 1 region for Malloc in libc_low + */ + + BSP_Configuration.RTEMS_api_configuration->maximum_regions++; + + /* + * Add 1 extension for newlib libc + */ + +#ifdef RTEMS_NEWLIB + BSP_Configuration.maximum_extensions++; +#endif + + /* + * Add another extension if using the stack checker + */ + +#ifdef STACK_CHECKER_ON + BSP_Configuration.maximum_extensions++; +#endif + + /* + * Tell libio how many fd's we want and allow it to tweak config + */ + + rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS); + + rtems_initialize_executive( &BSP_Configuration, &Cpu_table ); + /* does not return */ + + /* Clock_exit is done as an atexit() function */ + + /* configure peripherals for safe exit */ + bsp_cleanup(); + + /* return like a "normal" subroutine to the monitor */ + return 0; +} + |