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Diffstat (limited to 'c/src/lib/libbsp/i386/ts_386ex/startup/bspstart.c')
| -rw-r--r-- | c/src/lib/libbsp/i386/ts_386ex/startup/bspstart.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/i386/ts_386ex/startup/bspstart.c b/c/src/lib/libbsp/i386/ts_386ex/startup/bspstart.c new file mode 100644 index 0000000000..c0e92617e8 --- /dev/null +++ b/c/src/lib/libbsp/i386/ts_386ex/startup/bspstart.c @@ -0,0 +1,161 @@ +/* + * 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. + * + * COPYRIGHT (c) 1989-1998. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * Ported to the i386ex and submitted by: + * + * Erik Ivanenko + * University of Toronto + * erik.ivanenko@utoronto.ca + * + * $Id$ + */ + +void bsp_clean_up(void); + +#include <bsp.h> +#include <rtems/libio.h> + +#include <libcsupport.h> + +/* + * 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; + +/* + * Tells us where to put the workspace in case remote debugger is present. + */ + +extern rtems_unsigned32 rdb_start; + +/* + * Use the shared implementations of the following routines + */ + +void bsp_postdriver_hook(void); +void bsp_libc_init( void *, unsigned32, int ); + +/* + * 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) +{ + extern int heap_bottom; + rtems_unsigned32 heap_start; + rtems_unsigned32 heap_size; + + heap_start = (rtems_unsigned32) &heap_bottom; + if (heap_start & (CPU_ALIGNMENT-1)) + heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); + + heap_size = BSP_Configuration.work_space_start -(void *) heap_start ; + heap_size &= 0xfffffff0; /* keep it as a multiple of 16 bytes */ + + heap_size &= 0xfffffff0; /* keep it as a multiple of 16 bytes */ + bsp_libc_init((void *) heap_start, heap_size, 0); + + +#ifdef RTEMS_DEBUG + rtems_debug_enable( RTEMS_DEBUG_ALL_MASK ); +#endif +} + +/* + * bsp_start + * + * This routine does the bulk of the system initialization. + */ + +void bsp_start( void ) +{ + /* + * we do not use the pretasking_hook. + */ + + Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ + Cpu_table.postdriver_hook = bsp_postdriver_hook; + Cpu_table.interrupt_table_segment = get_ds(); + Cpu_table.interrupt_table_offset = (void *)Interrupt_descriptor_table; + Cpu_table.interrupt_stack_size = 8192; + /* +#if defined(RTEMS_POSIX_API) + BSP_Configuration.work_space_size *= 3; +#endif + */ + BSP_Configuration.work_space_start = (void *) + RAM_END - BSP_Configuration.work_space_size; + + /* + * Account for the console's resources + */ + console_reserve_resources( &BSP_Configuration ); + + /* + * Init rtems_interrupt_management + */ + rtems_irq_mngt_init(); + + /* + * Init rtems exceptions management + */ + rtems_exception_init_mngt(); + + /* + * The following information is very useful when debugging. + */ + +#ifdef BSP_DEBUG + printk( "RAM_START = 0x%x\nRAM_END = 0x%x\n", RAM_START, RAM_END ); + printk( "work_space_start = 0x%x\n", + BSP_Configuration.work_space_start ); + printk( "work_space_size = 0x%x\n", + BSP_Configuration.work_space_size ); + printk( "maximum_extensions = 0x%x\n", + BSP_Configuration.maximum_extensions ); + printk( "microseconds_per_tick = 0x%x\n", + BSP_Configuration.microseconds_per_tick ); + printk( "ticks_per_timeslice = 0x%x\n", + BSP_Configuration.ticks_per_timeslice ); + printk( "maximum_devices = 0x%x\n", + BSP_Configuration.maximum_devices ); + printk( "number_of_device_drivers = 0x%x\n", + BSP_Configuration.number_of_device_drivers ); + printk( "Device_driver_table = 0x%x\n", + BSP_Configuration.Device_driver_table ); + + /* printk( "_heap_size = 0x%x\n", _heap_size ); + printk( "_stack_size = 0x%x\n", _stack_size ); */ +#endif +} + +void bsp_clean_up(void) { + printk("bsp_cleanup called\n"); +} + |