From 291d69d7fd618d11fdcae010af319094cdf4d973 Mon Sep 17 00:00:00 2001
From: Michael Brown <mcb30@etherboot.org>
Date: Tue, 31 Jul 2007 14:05:03 +0100
Subject: [PATCH] Added support for draft version of the AoE Boot Firmware
 Table.

---
 src/core/abft.c         | 60 +++++++++++++++++++++++++++++++++++++++++
 src/include/gpxe/abft.h | 35 ++++++++++++++++++++++++
 src/usr/aoeboot.c       |  3 +++
 3 files changed, 98 insertions(+)
 create mode 100644 src/core/abft.c
 create mode 100644 src/include/gpxe/abft.h

diff --git a/src/core/abft.c b/src/core/abft.c
new file mode 100644
index 00000000..af28bbcf
--- /dev/null
+++ b/src/core/abft.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <realmode.h>
+#include <gpxe/aoe.h>
+#include <gpxe/netdevice.h>
+#include <gpxe/abft.h>
+
+/** @file
+ *
+ * AoE Boot Firmware Table
+ *
+ */
+
+#define abftab __use_data16 ( abftab )
+/** The aBFT used by gPXE */
+struct abft_table __data16 ( abftab ) __attribute__ (( aligned ( 16 ) )) = {
+	/* ACPI header */
+	.acpi = {
+		.signature = ABFT_SIG,
+		.length = sizeof ( abftab ),
+		.revision = 1,
+		.oem_id = "FENSYS",
+		.oem_table_id = "gPXE",
+	},
+};
+
+/**
+ * Fill in all variable portions of aBFT
+ *
+ * @v aoe		AoE session
+ */
+void abft_fill_data ( struct aoe_session *aoe ) {
+
+	/* Fill in boot parameters */
+	abftab.shelf = aoe->major;
+	abftab.slot = aoe->minor;
+	memcpy ( abftab.mac, aoe->netdev->ll_addr, sizeof ( abftab.mac ) );
+
+	/* Update checksum */
+	acpi_fix_checksum ( &abftab.acpi );
+
+	DBG ( "AoE boot firmware table:\n" );
+	DBG_HD ( &abftab, sizeof ( abftab ) );
+}
diff --git a/src/include/gpxe/abft.h b/src/include/gpxe/abft.h
new file mode 100644
index 00000000..1c651ef1
--- /dev/null
+++ b/src/include/gpxe/abft.h
@@ -0,0 +1,35 @@
+#ifndef _GPXE_ABFT_H
+#define _GPXE_ABFT_H
+
+/** @file
+ *
+ * AoE boot firmware table
+ *
+ */
+
+#include <stdint.h>
+#include <gpxe/acpi.h>
+#include <gpxe/if_ether.h>
+
+/** AoE boot firmware table signature */
+#define ABFT_SIG "aBFT"
+
+/**
+ * AoE Boot Firmware Table (aBFT)
+ */
+struct abft_table {
+	/** ACPI header */
+	struct acpi_description_header acpi;
+	/** AoE shelf */
+	uint16_t shelf;
+	/** AoE slot */
+	uint8_t slot;
+	/** Reserved */
+	uint8_t reserved_a;
+	/** MAC address */
+	uint8_t mac[ETH_ALEN];
+} __attribute__ (( packed ));
+
+extern void abft_fill_data ( struct aoe_session *aoe );
+
+#endif /* _GPXE_ABFT_H */
diff --git a/src/usr/aoeboot.c b/src/usr/aoeboot.c
index 1ed4ce49..ffc17a1c 100644
--- a/src/usr/aoeboot.c
+++ b/src/usr/aoeboot.c
@@ -6,6 +6,7 @@
 #include <gpxe/ata.h>
 #include <gpxe/netdevice.h>
 #include <gpxe/dhcp.h>
+#include <gpxe/abft.h>
 #include <int13.h>
 #include <usr/aoeboot.h>
 
@@ -82,6 +83,8 @@ int aoeboot ( const char *root_path ) {
 	boot_info.slot = aoe->minor;
 	copy_to_real ( 0x40, 0xf0, &boot_info, sizeof ( boot_info ) );
 
+	abft_fill_data ( aoe );
+
 	drive.drive = find_global_dhcp_num_option ( DHCP_EB_BIOS_DRIVE );
 	drive.blockdev = &ata.blockdev;