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Almost all information in this file is now obsolete. Writing a new driver

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should, with the new build system, just be a case of writing the .c file
and dropping it in place in drivers/net.  :)
This commit is contained in:
Michael Brown 2005-04-10 23:45:55 +00:00
parent 34a0b5f16f
commit b9237160ad
1 changed files with 0 additions and 91 deletions
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src/drivers/net/sis900.txt
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How I added the SIS900 card to Etherboot
Author: Marty Connor (mdc@thinguin.org)
Date: 25 Febrary 2001
Description:
This file is intended to help people who want to write an Etherboot
driver or port another driver to Etherboot. It is a starting point.
Perhaps someday I may write a more detailed description of writing an
Etherboot driver. This text should help get people started, and
studying sis900.[ch] should help show the basic structure and
techniques involved in writing and Etherboot driver.
***********************************************************************
0. Back up all the files I need to modify:
cd etherboot-4.7.20/src
cp Makefile Makefile.orig
cp config.c config.c.orig
cp pci.h pci.h.orig
cp NIC NIC.orig
cp cards.h cards.h.orig
1. Edit src/Makefile to add SIS900FLAGS to defines
SIS900FLAGS= -DINCLUDE_SIS900
2. edit src/pci.h to add PCI signatures for card
#define PCI_VENDOR_ID_SIS 0x1039
#define PCI_DEVICE_ID_SIS900 0x0900
#define PCI_DEVICE_ID_SIS7016 0x7016
3. Edit src/config.c to add the card to the card probe list
#if defined(INCLUDE_NS8390) || defined(INCLUDE_EEPRO100) ||
defined(INCLUDE_LANCE) || defined(INCLUDE_EPIC100) ||
defined(INCLUDE_TULIP) || defined(INCLUDE_OTULIP) ||
defined(INCLUDE_3C90X) || defined(INCLUDE_3C595) ||
defined(INCLUDE_RTL8139) || defined(INCLUDE_VIA_RHINE) ||
defined(INCLUDE_SIS900) || defined(INCLUDE_W89C840)
... and ...
#ifdef INCLUDE_SIS900
{ PCI_VENDOR_ID_SIS, PCI_DEVICE_ID_SIS900,
"SIS900", 0, 0, 0, 0},
{ PCI_VENDOR_ID_SIS, PCI_DEVICE_ID_SIS7016,
"SIS7016", 0, 0, 0, 0},
#endif
... and ...
#ifdef INCLUDE_SIS900
{ "SIS900", sis900_probe, pci_ioaddrs },
#endif
4. Edit NIC to add sis900 and sis7016 to NIC list
# SIS 900 and SIS 7016
sis900 sis900 0x1039,0x0900
sis7016 sis900 0x1039,0x7016
5. Edit cards.h to add sis900 probe routine declaration
#ifdef INCLUDE_SIS900
extern struct nic *sis900_probe(struct nic *, unsigned short *
PCI_ARG(struct pci_device *));
#endif
***********************************************************************
At this point, you can begin creating your driver source file. See
the "Writing an Etherboot Driver" section of the Etherboot
documentation for some hints. See the skel.c file for a starting
point. If there is a Linux driver for the card, you may be able to
use that. Copy and learn from existing Etherboot drivers (this is GPL
/ Open Source software!).
Join the etherboot-developers and etherboot-users mailing lists
(information is on http://etherboot.sourceforge.net) for information and
assistance. We invite more developers to help improve Etherboot.
Visit the http://etherboot.sourceforge.net, http://thinguin.org,
http://rom-o-matic.net, and http://ltsp.org sites for information and
assistance.
Enjoy.