YukonUndi.txt Driver File Contents (Marvel8056_Lan.zip)

(C)Copyright 2003-2004 Marvell(R).
All rights reserved.


yukonundi.txt created 09-Jun-2004

Readme File for yukonundi.efi v2.02
UNDI driver for EFI32

This file contains
 1  Overview
 2  Configuration
 3  Installation


1  Overview

yukonundi.efi is the EFI UNDI driver for the Marvell(R) Yukon(TM) 
Ethernet Controller. 

2  Configuration

The following table gives an overview of the possible configuration that

         Parameter           |       Possible Values
       Speed Capabilities    |       Auto (default)
                             |       10 Mbps
                             |       100 Mbps
       Duplex Capabilities   |       Both (default)
                             |       Half duplex
                             |       Full duplex

The configuration is stored in the VPD memory of the adapter, if there is 
enough space left. If the VPD memory is destroyed or YUKONUNDI can not 
read the configuration, it uses the default values (see table above). 

1) Speed capabilities

The speed capabilities '10 Mbps' or '100 Mbps' force the link speed to the
respective value. If 'Auto' is selected, the link speed will be
negotiated, which can result in a speed of 10, 100 or, if supported by the
actual hardware, 1000 Mbps.

2) Duplex capabilities

The duplex capabilities 'Half duplex' and 'Full duplex' force the duplex
mode to the respective value. If 'Both' is selected, the duplex mode is
negotiated, which can result in a duplex mode of Full duplex or Half

Format and coding of the configuration

YUKONUNDI uses four bytes of the VPD memory to store the configuration:
- two bytes for the VPD keyword "VE",
- one byte for the length (4) of this VPD entry,
- one bytes for the configuration itself.

Coding of the configuration in the VPD memory:

   Bit:    | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
                             |   |   |   |
                             |   |   +---+---- Speed capabilities
                             +---+------------ Duplex capabilities

The default values are all zeros, resulting in the following

Link speed capability:  Auto.
Duplex capability:      Both.

3  Installation

1) Loading YUKONUNDI manually

Manual installation of the driver can be done by invoking the EFI shell
command 'load' with the name of the driver image as argument.

The EFI shell command 'unload' can be used to unload the driver from

2) Loading YUKONUNDI automatically

To load YUKONUNDI automatically, the driver image must reside on a
drive that is accessible from the EFI shell. To load YUKONUNDI
automatically during every boot, call the shell command 'bcfg':

bcfg driver add # [path]yukonundi.efi "desc"

#           Position in the additional driver list.
            Type 'bcfg driver dump' to see the current list.
[path]      Path to the driver image of YUKONUNDI.
            Example fs0:\efi\drivers 197
desc        Any description you like, preferably "UNDI" to give a hint of
            the driver's nature.

Again, the EFI shell command 'unload' can be used to unload the driver
from memory.

***End of Readme file***
Download Driver Pack

How To Update Drivers Manually

After your driver has been downloaded, follow these simple steps to install it.

  • Expand the archive file (if the download file is in zip or rar format).

  • If the expanded file has an .exe extension, double click it and follow the installation instructions.

  • Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.

  • Find the device and model you want to update in the device list.

  • Double-click on it to open the Properties dialog box.

  • From the Properties dialog box, select the Driver tab.

  • Click the Update Driver button, then follow the instructions.

Very important: You must reboot your system to ensure that any driver updates have taken effect.

For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.

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