From 862c231785024acbd6c830fb30e0a6a64e6c3318 Mon Sep 17 00:00:00 2001 From: Thomas Doerfler Date: Wed, 4 Jul 2007 12:37:36 +0000 Subject: added virtex BSP support and some missing files for common PPC exception handling --- c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c | 277 +++++++++++++++++++++ 1 file changed, 277 insertions(+) create mode 100644 c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c (limited to 'c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c') diff --git a/c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c b/c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c new file mode 100644 index 0000000000..700ac0c812 --- /dev/null +++ b/c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c @@ -0,0 +1,277 @@ +/* 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 + * + * Author: Thomas Doerfler + * IMD Ingenieurbuero fuer Microcomputertechnik + * + * COPYRIGHT (c) 1998 by IMD + * + * Changes from IMD are covered by the original distributions terms. + * This file has been derived from the papyrus BSP: + * + * Author: Andrew Bray + * + * COPYRIGHT (c) 1995 by i-cubed ltd. + * + * To anyone who acknowledges that this file is provided "AS IS" + * without any express or implied warranty: + * permission to use, copy, modify, and distribute this file + * for any purpose is hereby granted without fee, provided that + * the above copyright notice and this notice appears in all + * copies, and that the name of i-cubed limited not be used in + * advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * i-cubed limited makes no representations about the suitability + * of this software for any purpose. + * + * Modifications for spooling console driver and control of memory layout + * with linker command file by + * Thomas Doerfler + * for these modifications: + * COPYRIGHT (c) 1997 by IMD, Puchheim, Germany. + * + * To anyone who acknowledges that this file is provided "AS IS" + * without any express or implied warranty: + * permission to use, copy, modify, and distribute this file + * for any purpose is hereby granted without fee, provided that + * the above copyright notice and this notice appears in all + * copies. IMD makes no representations about the suitability + * of this software for any purpose. + * + * Derived from c/src/lib/libbsp/no_cpu/no_bsp/startup/bspstart.c: + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * + * Modifications for PPC405GP by Dennis Ehlin + * + * $Id$ + */ +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +SPR_RW(SPRG0) +SPR_RW(SPRG1) + +#include RTEMS_XPARAMETERS_H +#include + +/* + * 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; + +uint32_t _heap_start; +uint32_t _heap_end; +uint32_t _top_of_ram; + + +/* Initialize whatever libc we are using + * called from postdriver hook + */ + +void bsp_XAssertHandler(const char* file, int line); +void bsp_postdriver_hook(void); +void bsp_libc_init( void *, uint32_t, int ); + + +void bsp_XAssertHandler(const char* file, int line) { + printf("\n***\n*** XAssert Failed! File: %s, Line: %d\n***\n", file, line); +} + +/* + * + * bsp_predriver_hook + * + * Before drivers are setup. + */ + +void bsp_predriver_hook(void) +{ + +} + +/* + * 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) +{ + + + uint32_t heap_start; + uint32_t heap_size; + uint32_t heap_end; + + /* round up from the top of workspace to next 64k boundary, get + * default heapsize from linker script */ + heap_start = (((uint32_t)BSP_Configuration.work_space_start + + BSP_Configuration.work_space_size) + 0x18000) & 0xffff0000; + + heap_end = _heap_start + (uint32_t)&_HeapSize; + + heap_size = (heap_end - heap_start); + + _heap_start = heap_start; + _heap_end = heap_end; + + _top_of_ram = heap_end; + + bsp_libc_init((void *) heap_start, heap_size, 0); /* 64 * 1024 */ + +/* + XAssertSetCallback((XAssertCallback*)bsp_XAssertHandler); +*/ + +#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 ) +{ + extern unsigned long *intrStackPtr; + register unsigned char* intrStack; + ppc_cpu_id_t myCpu; + ppc_cpu_revision_t myCpuRevision; + + /* + * Get CPU identification dynamically. Note that the get_ppc_cpu_type() + * function store the result in global variables + * so that it can be used latter... + */ + myCpu = get_ppc_cpu_type(); + myCpuRevision = get_ppc_cpu_revision(); + /* + * initialize the CPU table for this BSP + * NOTE: this must be before the exception initialization, + * because exception code useses some information from Cpu_table + */ + + Cpu_table.pretasking_hook = bsp_pretasking_hook; /* init libc, etc. */ + Cpu_table.predriver_hook = bsp_predriver_hook; + Cpu_table.postdriver_hook = bsp_postdriver_hook; + Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY; + + /* timebase register ticks/microsecond */ + Cpu_table.clicks_per_usec = (250000000 / 1000000); + + Cpu_table.serial_per_sec = 14625000; /* = (CPU Clock / UART Internal Clock Divisor) */ + Cpu_table.serial_external_clock = 0; + Cpu_table.timer_internal_clock = 1; + Cpu_table.serial_xon_xoff = 0; + Cpu_table.serial_cts_rts = 0; + Cpu_table.serial_rate = 115200; + Cpu_table.timer_average_overhead = 2; + Cpu_table.timer_least_valid = 3; + Cpu_table.exceptions_in_RAM = TRUE; + + /* + * Initialize some SPRG registers related to irq handling + */ + + intrStack = (((unsigned char*)&intrStackPtr) - PPC_MINIMUM_STACK_FRAME_SIZE); + _write_SPRG1((unsigned int)intrStack); + /* signal them that we have fixed PR288 - eventually, this should go away */ + _write_SPRG0(PPC_BSP_HAS_FIXED_PR288); + + + /* + * Initialize default raw exception handlers. + * See shared/vectors/vectors_init.c + */ + initialize_exceptions(); + + /* + * Install our own set of exception vectors + */ + BSP_rtems_irq_mng_init(0); + + /* + * 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. + */ + + /* + * 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". + */ + /* FIME: plan usage of RAM better: + - make top of ram dynamic, + - make rest of ram to heap... + -remove RAM_END from bsp.h, this cannot be valid... + or must be a function call + */ + { + extern int _end; + + /* round _end up to next 64k boundary for start of workspace */ + BSP_Configuration.work_space_start = (void *)((((uint32_t)&_end) + 0x18000) & 0xffff0000); + } + +} + +void BSP_ask_for_reset(void) +{ + printk("system stopped, press RESET"); + while(1) {}; +} + +void BSP_panic(char *s) +{ + printk("%s PANIC %s\n",_RTEMS_version, s); + BSP_ask_for_reset(); +} + +void _BSP_Fatal_error(unsigned int v) +{ + printk("%s PANIC ERROR %x\n",_RTEMS_version, v); + BSP_ask_for_reset(); +} + -- cgit v1.2.3