Revert the deletion of drivers/pci/onboard that snuck in ahead of its time.

Signed-off-by: Myles Watson <mylesgw@gmail.com>
Acked-by: Myles Watson <mylesgw@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4922 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/drivers/pci/Makefile.inc

@@ -0,0 +1 @@
+subdirs-y += onboard

src/drivers/pci/onboard/Config.lb

@@ -0,0 +1,4 @@
+config chip.h
+
+object onboard.o
+

src/drivers/pci/onboard/Makefile.inc

@@ -0,0 +1 @@
+obj-y += onboard.o

src/drivers/pci/onboard/chip.h

@@ -0,0 +1,11 @@
+#ifndef PCI_ONBOARD_H
+#define PCI_ONBOARD_H
+
+struct drivers_pci_onboard_config 
+{
+       unsigned long rom_address;
+};
+struct chip_operations;
+extern struct chip_operations drivers_pci_onboard_ops;
+
+#endif 

src/drivers/pci/onboard/onboard.c

@@ -0,0 +1,78 @@
+/*
+ * Copyright 2004 Tyan Computer
+ *  by yhlu@tyan.com
+ */
+
+#include <console/console.h>
+
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include "chip.h"
+
+/*
+ * How to use the onboard device driver for option rom execution:
+ *
+ * 1. You need to add the driver to your mainboard Config.lb:
+ *
+ *      chip drivers/pci/onboard
+ *	    device pci x.0 on end
+ *          register "rom_address" = "0xfff80000"
+ *      end
+ * 2. Reduce the size of your normal (or fallback) image, by adding the
+ *    following lines to your target Config.lb, after romimage "normal"
+ *      # 48K for SCSI FW or ATI ROM
+ *      option CONFIG_ROM_SIZE = 512*1024-48*1024
+ * 3. Create your vgabios.bin, for example using awardeco and put it in the
+ *    directory of your target Config.lb. You can also read an option rom from
+ *    a running system, but this is unreliable, as some option roms are changed
+ *    during execution:
+ *      #  dd if=/dev/mem of=atix.rom skip=1536 count=96
+ * 4. After you built coreboot.rom, attach the option rom to your coreboot
+ *    image:
+ *      # cat ../atix.rom ./normal/coreboot.rom ./fallback/coreboot.rom > coreboot.rom
+ *
+ * Alternatively you can use the following script "nsxv" to build your image
+ * Usage:
+ * # ./nsxv s2850
+ *     
+ *     #!/bin/bash
+ *     MBVENDOR=tyan
+ *     MBMODEL=$1
+ *     LBROOT=/home/yhlu/xx/xx
+ *     
+ *     echo $1
+ *     date
+ *     
+ *     cd "$LBROOT/freebios2/targets"
+ *     rm -rf "$MBVENDOR/$MBMODEL/$MBMODEL"
+ *     ./buildtarget "$MBVENDOR/$MBMODEL" &> "$LBROOT/x_b.txt"
+ *     cd "$MBVENDOR/$MBMODEL/$MBMODEL"
+ *     #make clean
+ *     eval make &> "$LBROOT/x_m.txt"
+ *             if [ $? -eq 0 ]; then
+ *                     echo "ok."
+ *             else
+ *                     echo "FAILED! Log excerpt:"
+ *                     tail -n 15 "$LBROOT/x_m.txt"
+ *                     exit
+ *             fi
+ *     cat ../atix.rom ./normal/coreboot.rom ./fallback/coreboot.rom > "$LBROOT/rom/"$MBMODEL"_coreboot.rom"
+ *     cp -f "$LBROOT/rom/"$MBMODEL"_coreboot.rom" /home/yhlu/
+ *     
+ *     date
+ *     
+ */
+
+static void onboard_enable(device_t dev) 
+{
+	struct drivers_pci_onboard_config *conf;
+        conf = dev->chip_info;
+	dev->rom_address = conf->rom_address;
+}
+
+struct chip_operations drivers_pci_onboard_ops = {
+	CHIP_NAME("Onboard PCI")
+	.enable_dev = onboard_enable,
+};