diff options
Diffstat (limited to 'c/src/lib/libbsp/m68k/idp/startup')
-rw-r--r-- | c/src/lib/libbsp/m68k/idp/startup/bspstart.c | 175 | ||||
-rw-r--r-- | c/src/lib/libbsp/m68k/idp/startup/linkcmds | 44 |
2 files changed, 219 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/m68k/idp/startup/bspstart.c b/c/src/lib/libbsp/m68k/idp/startup/bspstart.c new file mode 100644 index 0000000000..843a137485 --- /dev/null +++ b/c/src/lib/libbsp/m68k/idp/startup/bspstart.c @@ -0,0 +1,175 @@ +/* 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, 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 "bsp.h" +#include "cpu.h" +#include "libcsupport.h" + +unsigned char *duart_base; +extern struct duart_regs duart_info; + +#define DELAY 5000 + +void led_putnum(); + +/* + * 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; + +/* 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) &end; + if (heap_start & (CPU_ALIGNMENT-1)) + heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1); + + /* Create 64 KByte memory region for RTEMS executive */ + RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0); + + /* + * 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 */ + + /* + * Initialize the stack bounds checker + */ + +#ifdef STACK_CHECKER_ON + Stack_check_Initialize(); +#endif +} + + +int bsp_start( + int argc, + char **argv, + char **environp +) +{ + m68k_isr *monitors_vector_table; + int index; + + duart_base = (unsigned char *)DUART_ADDR; + + /* + * Set the VBR here to the monitor's default. + */ + + monitors_vector_table = (m68k_isr *)0; /* This is where + you set vector base + register = 0 */ + m68k_set_vbr( monitors_vector_table ); + + /* The vector interrupt table for the 680x0 is in appendix B-2 + of the M68000 Family Programmer's reference table */ + for ( index=2 ; index<=255 ; index++ ) + M68Kvec[ index ] = monitors_vector_table[ 32 ]; + + + M68Kvec[ 2 ] = monitors_vector_table[ 2 ]; /* bus error vector */ + M68Kvec[ 4 ] = monitors_vector_table[ 4 ]; /* breakpoints vector */ + M68Kvec[ 9 ] = monitors_vector_table[ 9 ]; /* trace vector */ + + /* + * Set the VBR here if you do not want to use the monitor's vector table. + */ + + m68k_set_vbr( &M68Kvec ); + + m68k_enable_caching(); + + /* + * we only use a hook to get the C library initialized. + */ + + Cpu_table.pretasking_hook = NULL; + + Cpu_table.predriver_hook = bsp_libc_init; /* RTEMS resources available */ + + Cpu_table.postdriver_hook = NULL; + + Cpu_table.idle_task = NULL; /* do not override system IDLE task */ + + Cpu_table.do_zero_of_workspace = TRUE; + + Cpu_table.interrupt_vector_table = (m68k_isr *) &M68Kvec; + + Cpu_table.interrupt_stack_size = 4096; + + Cpu_table.extra_system_initialization_stack = 0; + + /* + * Copy the table + */ + + BSP_Configuration = Configuration; + + BSP_Configuration.work_space_start = (void *) + (RAM_END - BSP_Configuration.work_space_size); + + /* + * Add 1 region for the RTEMS Malloc + */ + + BSP_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 + +/* led_putnum('e'); * for debugging purposes only */ + rtems_initialize_executive( &BSP_Configuration, &Cpu_table );/* does not return */ + + /* Clock_exit is done as an atexit() function */ + + return 0; +} diff --git a/c/src/lib/libbsp/m68k/idp/startup/linkcmds b/c/src/lib/libbsp/m68k/idp/startup/linkcmds new file mode 100644 index 0000000000..be546b11f5 --- /dev/null +++ b/c/src/lib/libbsp/m68k/idp/startup/linkcmds @@ -0,0 +1,44 @@ +/* This file is a derivation of that found with the newlib-1.6 distribution + * for the idp.ld file. That file, it appears, was originally written by + * Rob Savoye. Other ideas came from Joel Sherrill for the RTEMS linkcmds + * file (this is basically a mixture of the two). + */ + +/* + * Setup the memory map of the MC68ec0x0 Board (IDP) + * stack grows up towards high memory. This works for + * both the rom68k and the mon68k monitors. + */ +MEMORY +{ + ram : org = 0x10000, l = 2M +} + +SECTIONS +{ + .text 0x10000: + { + text_start = . ; + _text_start = . ; + *(.text) + etext = ALIGN( 0x10 ) ; + _etext = .; + } + .data ADDR( .text ) + SIZEOF( .text ): + { + data_start = . ; + _data_start = .; + *(.data) + edata = ALIGN( 0x10 ) ; + _edata = .; + } + .bss ADDR( .data ) + SIZEOF( .data ): + { + bss_start = . ; + _bss_start = . ; + *(.bss) + *(COMMON) + end = . ; + _end = . ; + } +} |