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/**
* @file
*
* This file contains the PC386 BSP startup package. It includes application,
* board, and monitor specific initialization and configuration.
*/
/*
* This file was initially written by Joel Sherrill as part of the go32 BSP.
* It was subsequently adapted as part of the pc386 BSP by developers from
* the NavIST Group in 1997.
*
* Copyright (c) 2016.
* Chris Johns <chrisj@rtems.org>
*
* COPYRIGHT (c) 1989-2008, 2016.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*
* (C) Copyright 1997 -
* - NavIST Group - Real-Time Distributed Systems and Industrial Automation
* Instituto Superior Tecnico * Lisboa * PORTUGAL (http://pandora.ist.utl.pt)
*
* NavISY Disclaimer:
* This file is provided "AS IS" without warranty of any kind, either
* expressed or implied.
*/
#include <bsp.h>
#include <bsp/bspimpl.h>
#include <bsp/irq.h>
#include <rtems/pci.h>
#include <libcpu/cpuModel.h>
/*
* PCI Bus Configuration
*/
rtems_pci_config_t BSP_pci_configuration = {
(volatile unsigned char*)0,
(volatile unsigned char*)0,
NULL
};
/*
* Helper to initialize the PCI Bus
*/
static void bsp_pci_initialize_helper(void)
{
#if (BSP_IS_EDISON == 0)
const pci_config_access_functions *pci_accessors;
pci_accessors = pci_bios_initialize();
if (pci_accessors != NULL) {
printk("PCI bus: using PCI BIOS interface\n");
BSP_pci_configuration.pci_functions = pci_accessors;
return;
}
pci_accessors = pci_io_initialize();
if (pci_accessors != NULL) {
printk("PCI bus: using PCI I/O interface\n");
BSP_pci_configuration.pci_functions = pci_accessors;
return;
}
printk("PCI bus: could not initialize PCI BIOS interface\n");
#endif
}
/*-------------------------------------------------------------------------+
| Function: bsp_start
| Description: Called before main is invoked.
| Global Variables: None.
| Arguments: None.
| Returns: Nothing.
+--------------------------------------------------------------------------*/
static void bsp_start_default( void )
{
/*
* Turn off watchdog
*/
#if (BSP_IS_EDISON == 1)
volatile uint32_t *edison_wd = (volatile uint32_t *)0xff009000;
*edison_wd = 0x11f8;
#endif
/*
* Calibrate variable for 1ms-loop (see timer.c)
*/
#if (BSP_IS_EDISON == 0)
Calibrate_loop_1ms();
#endif
/*
* Init rtems interrupt management
*/
rtems_irq_mngt_init();
/*
* Init rtems exceptions management
*/
rtems_exception_init_mngt();
/*
* init PCI Bios interface...
*/
bsp_pci_initialize_helper();
/*
* Probe for legacy UARTs.
*/
legacy_uart_probe();
/*
* Probe for UARTs on PCI.
*/
pci_uart_probe();
/*
* Parse the GDB arguments and flag a serial port as not valid. This stops
* the console from claming the port.
*/
#if BSP_GDB_STUB
pc386_parse_gdb_arguments();
#endif
/*
* Figure out where printk() and console IO is to be directed. Do this after
* the legacy and PCI bus probes so we have a chance for those devices to be
* added to the set in the console driver. In general, do it as early as
* possible so printk() has a chance to work early on devices found via PCI
* probe.
*/
pc386_parse_console_arguments();
#if (BSP_IS_EDISON == 0)
Clock_driver_install_handler();
#endif
#if BSP_ENABLE_IDE
bsp_ide_cmdline_init();
#endif
} /* bsp_start_default */
/*
* By making this a weak alias for bsp_start_default, a brave soul
* can override the actual bsp_start routine used.
*/
void bsp_start (void) __attribute__ ((weak, alias("bsp_start_default")));
|
