linux-imx

/*

 * Parse the EFI PCDP table to locate the console device.

 *

 * (c) Copyright 2002, 2003, 2004 Hewlett-Packard Development Company, L.P.

 *  Khalid Aziz <khalid.aziz@hp.com>

 *  Alex Williamson <alex.williamson@hp.com>

 *  Bjorn Helgaas <bjorn.helgaas@hp.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

​

#include <linux/acpi.h>

#include <linux/console.h>

#include <linux/efi.h>

#include <linux/serial.h>

#include <linux/serial_core.h>

#include <asm/vga.h>

#include "pcdp.h"

​

static int __init

setup_serial_console(struct pcdp_uart *uart)

{

#ifdef CONFIG_SERIAL_8250_CONSOLE

    int mmio;

    static char options[64], *p = options;

    char parity;

​

    mmio = (uart->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY);

    p += sprintf(p, "uart8250,%s,0x%llx",

        mmio ? "mmio" : "io", uart->addr.address);

    if (uart->baud) {

        p += sprintf(p, ",%llu", uart->baud);

        if (uart->bits) {

            switch (uart->parity) {

                case 0x2: parity = 'e'; break;

                case 0x3: parity = 'o'; break;

                default:  parity = 'n';

            }

            p += sprintf(p, "%c%d", parity, uart->bits);

        }

    }

​

    add_preferred_console("uart", 8250, &options[9]);

    return setup_earlycon(options);

#else

    return -ENODEV;

#endif

}

​

static int __init

setup_vga_console(struct pcdp_device *dev)

{

#if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)

    u8 *if_ptr;

​

    if_ptr = ((u8 *)dev + sizeof(struct pcdp_device));

    if (if_ptr[0] == PCDP_IF_PCI) {

        struct pcdp_if_pci if_pci;

​

        /* struct copy since ifptr might not be correctly aligned */

​