144 lines
3.9 KiB
C
144 lines
3.9 KiB
C
/* system.c - system/hardware module for the Quark BSP */
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/*
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* Copyright (c) 2013-2015, Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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DESCRIPTION
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This module provides routines to initialize and support board-level hardware
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for the Quark BSP.
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Implementation Remarks:
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Handlers for the secondary serial port have not been added.
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*/
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#include <cputype.h>
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#include <nanokernel.h>
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#include <nanokernel/cpu.h>
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#include <misc/printk.h>
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#include <misc/__assert.h>
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#include "board.h"
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#include <drivers/uart.h>
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#include <drivers/ioapic.h>
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#include <drivers/loapic.h>
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#include <drivers/pci/pci.h>
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#include <drivers/pci/pci_mgr.h>
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#if defined(CONFIG_PRINTK) || defined(CONFIG_STDOUT_CONSOLE)
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#define DO_CONSOLE_INIT
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#endif
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#if defined(DO_CONSOLE_INIT)
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/*******************************************************************************
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*
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* uartGenericInfoInit - initialize initialization information for one UART
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*
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* RETURNS: N/A
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*
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*/
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static void uartGenericInfoInit(struct uart_init_info *p_info)
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{
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p_info->options = 0;
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p_info->sys_clk_freq = UART_XTAL_FREQ;
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p_info->baud_rate = CONFIG_UART_BAUDRATE;
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}
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#endif /* DO_CONSOLE_INIT */
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#if defined(DO_CONSOLE_INIT)
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/*******************************************************************************
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*
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* consoleInit - initialize target-only console
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*
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* Only used for debugging.
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*
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* RETURNS: N/A
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*
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*/
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#include <console/uart_console.h>
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static void consoleInit(void)
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{
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struct uart_init_info info;
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uartGenericInfoInit(&info);
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uart_init(CONFIG_UART_CONSOLE_INDEX, &info);
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uart_console_init();
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}
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#else
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#define consoleInit() \
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do {/* nothing */ \
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} while ((0))
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#endif /* DO_CONSOLE_INIT */
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/*******************************************************************************
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*
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* _InitHardware - perform basic hardware initialization
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*
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* Initialize the Intel LOAPIC and IOAPIC device driver and the
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* Intel 8250 UART device driver.
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* Also initialize the timer device driver, if required.
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*
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* RETURNS: N/A
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*/
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void _InitHardware(void)
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{
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_loapic_init();
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_ioapic_init();
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_ioapic_irq_set(HPET_TIMER0_IRQ, HPET_TIMER0_VEC, HPET_IOAPIC_FLAGS);
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consoleInit(); /* NOP if not needed */
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#ifdef CONFIG_PCI_DEBUG
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/* Rescan PCI and display the list of PCI attached devices */
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struct pci_dev_info info = {
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.bar = PCI_BAR_ANY,
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};
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pci_bus_scan_init();
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while (pci_bus_scan(&info))
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{
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pci_show(&info);
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info.class = 0;
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info.vendor_id = 0;
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info.device_id = 0;
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info.bar = PCI_BAR_ANY;
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}
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#endif /* CONFIG_PCI_DEBUG */
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}
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