From 50cf94da7e57a9e83d7c0753dd55eae5fd55455a Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Fri, 20 Mar 1998 17:16:31 +0000 Subject: SH port submitted from Ralf Corsepius . --- c/src/lib/libbsp/sh/gensh1/startup/bspstart.c | 278 ++++++++++++++++++++++++++ 1 file changed, 278 insertions(+) create mode 100644 c/src/lib/libbsp/sh/gensh1/startup/bspstart.c (limited to 'c/src/lib/libbsp/sh/gensh1/startup/bspstart.c') diff --git a/c/src/lib/libbsp/sh/gensh1/startup/bspstart.c b/c/src/lib/libbsp/sh/gensh1/startup/bspstart.c new file mode 100644 index 0000000000..1a3cc2737f --- /dev/null +++ b/c/src/lib/libbsp/sh/gensh1/startup/bspstart.c @@ -0,0 +1,278 @@ +/* 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 + * + * Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and + * Bernd Becker (becker@faw.uni-ulm.de) + * + * COPYRIGHT (c) 1997-1998, FAW Ulm, Germany + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * + * COPYRIGHT (c) 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. + * + * $Id$ + */ + +#include +#include + +#include + +#include +#include + +#ifdef STACK_CHECKER_ON +#include +#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() +{ + /* + * The last parameter to RTEMS_Malloc_Initialize is the "chunk" + * size which a multiple of will be requested on each sbrk() + * call by malloc(). A value of 0 indicates that sbrk() should + * not be called to extend the heap. + */ + + RTEMS_Malloc_Initialize(&HeapStart, sizeof(unsigned32) * (&HeapEnd - &HeapStart), 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 + * + * 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 bsp_start( + int argc, + char **argv, + char **environp +) +{ + /* + For real boards you need to setup the hardware + and need to copy the vector table from rom to ram. + + Depending on the board this can ether be done from inside the rom + startup code, rtems startup code or here. + */ + + if ((argc > 0) && argv && argv[0]) + rtems_progname = argv[0]; + else + rtems_progname = "RTEMS"; + + /* + * Allocate the memory for the RTEMS Work Space. This can come from + * a variety of places: hard coded address, malloc'ed from outside + * RTEMS world (e.g. simulator or primitive memory manager), or (as + * typically done by stock BSPs) by subtracting the required amount + * of work space from the last physical address on the CPU board. + */ + + /* + * Copy the Configuration Table .. so we can change it + */ + + BSP_Configuration = Configuration; + + /* + * Add 1 region for the RTEMS Malloc + */ + + BSP_Configuration.RTEMS_api_configuration->maximum_regions++; + + /* + * Add 1 extension for newlib libc + */ + +#ifdef RTEMS_NEWLIB + BSP_Configuration.maximum_extensions++; +#endif + + /* + * Add 1 extension for newlib libc + */ + +#ifdef RTEMS_NEWLIB + BSP_Configuration.maximum_extensions++; +#endif + +#ifdef STACK_CHECKER_ON + /* + * Add 1 extension for stack checker + */ + + BSP_Configuration.maximum_extensions++; +#endif + + /* + * Need to "allocate" the memory for the RTEMS Workspace and + * tell the RTEMS configuration where it is. This memory is + * not malloc'ed. It is just "pulled from the air". + */ + + BSP_Configuration.work_space_start = (void *) &WorkSpaceStart ; + BSP_Configuration.work_space_size = + (unsigned32) &WorkSpaceEnd - + (unsigned32) &WorkSpaceStart ; + + /* + * initialize the CPU table for this BSP + */ + +#if ( CPU_ALLOCATE_INTERRUPT_STACK == FALSE ) + _CPU_Interrupt_stack_low = &CPU_Interrupt_stack_low ; + _CPU_Interrupt_stack_high = &CPU_Interrupt_stack_high ; + + /* This isn't used anywhere */ + Cpu_table.interrupt_stack_size = + (unsigned32) (&CPU_Interrupt_stack_high) - + (unsigned32) (&CPU_Interrupt_stack_low) ; +#endif + + + Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ + + 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; + +#if ( CPU_ALLOCATE_INTERRUPT_STACK == TRUE ) + Cpu_table.interrupt_stack_size = 4096; +#endif + + Cpu_table.extra_mpci_receive_server_stack = 0; + + /* + * Don't forget the other CPU Table entries. + */ + + /* + * Tell libio how many fd's we want and allow it to tweak config + */ + + rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS); + + /* + * Start RTEMS + */ + + rtems_initialize_executive( &BSP_Configuration, &Cpu_table ); + + bsp_cleanup(); + + return 0; +} -- cgit v1.2.3