forked from Imagelibrary/rtems
9964895866
Adjust build support files to new directory layout. This patch is a part of the BSP source reorganization. Update #3285.
142 lines
3.4 KiB
C
142 lines
3.4 KiB
C
/**
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* @file
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*
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* This file contains the PC386 BSP startup package. It includes application,
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* board, and monitor specific initialization and configuration.
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*/
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/*
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* This file was initially written by Joel Sherrill as part of the go32 BSP.
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* It was subsequently adapted as part of the pc386 BSP by developers from
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* the NavIST Group in 1997.
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*
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* Copyright (c) 2016.
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* Chris Johns <chrisj@rtems.org>
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*
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* COPYRIGHT (c) 1989-2008, 2016.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*
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* (C) Copyright 1997 -
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* - NavIST Group - Real-Time Distributed Systems and Industrial Automation
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* Instituto Superior Tecnico * Lisboa * PORTUGAL (http://pandora.ist.utl.pt)
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*
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* NavISY Disclaimer:
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* This file is provided "AS IS" without warranty of any kind, either
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* expressed or implied.
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*/
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#include <bsp.h>
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#include <bsp/bspimpl.h>
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#include <bsp/irq.h>
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#include <rtems/pci.h>
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#include <libcpu/cpuModel.h>
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/*
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* PCI Bus Configuration
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*/
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rtems_pci_config_t BSP_pci_configuration = {
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(volatile unsigned char*)0,
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(volatile unsigned char*)0,
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NULL
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};
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/*
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* Helper to initialize the PCI Bus
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*/
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static void bsp_pci_initialize_helper(void)
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{
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const pci_config_access_functions *pci_accessors;
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pci_accessors = pci_bios_initialize();
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if (pci_accessors != NULL) {
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printk("PCI bus: using PCI BIOS interface\n");
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BSP_pci_configuration.pci_functions = pci_accessors;
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return;
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}
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pci_accessors = pci_io_initialize();
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if (pci_accessors != NULL) {
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printk("PCI bus: using PCI I/O interface\n");
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BSP_pci_configuration.pci_functions = pci_accessors;
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return;
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}
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printk("PCI bus: could not initialize PCI BIOS interface\n");
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}
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/*-------------------------------------------------------------------------+
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| Function: bsp_start
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| Description: Called before main is invoked.
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| Global Variables: None.
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| Arguments: None.
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| Returns: Nothing.
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+--------------------------------------------------------------------------*/
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static void bsp_start_default( void )
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{
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/*
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* Turn off watchdog
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*/
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/*
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* Calibrate variable for 1ms-loop (see timer.c)
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*/
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Calibrate_loop_1ms();
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/*
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* Init rtems interrupt management
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*/
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rtems_irq_mngt_init();
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/*
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* Init rtems exceptions management
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*/
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rtems_exception_init_mngt();
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/*
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* init PCI Bios interface...
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*/
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bsp_pci_initialize_helper();
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/*
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* Probe for legacy UARTs.
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*/
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legacy_uart_probe();
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/*
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* Probe for UARTs on PCI.
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*/
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pci_uart_probe();
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/*
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* Parse the GDB arguments and flag a serial port as not valid. This stops
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* the console from claming the port.
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*/
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#if BSP_GDB_STUB
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pc386_parse_gdb_arguments();
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#endif
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/*
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* Figure out where printk() and console IO is to be directed. Do this after
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* the legacy and PCI bus probes so we have a chance for those devices to be
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* added to the set in the console driver. In general, do it as early as
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* possible so printk() has a chance to work early on devices found via PCI
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* probe.
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*/
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pc386_parse_console_arguments();
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Clock_driver_install_handler();
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#if BSP_ENABLE_IDE
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bsp_ide_cmdline_init();
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#endif
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} /* bsp_start_default */
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/*
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* By making this a weak alias for bsp_start_default, a brave soul
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* can override the actual bsp_start routine used.
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*/
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void bsp_start (void) __attribute__ ((weak, alias("bsp_start_default")));
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