From f11900a9c6c85b6167a3ad6c6a3efc6c9b8e1686 Mon Sep 17 00:00:00 2001
From: Michael Brown
Date: Sat, 13 Jan 2007 17:28:51 +0000
Subject: I prefer IMAGE_XXX to XXX_IMAGE.

Add IMAGE_PXE to use the new image format framework.  "kernel pxelinux.0"
now works.
---
 src/arch/i386/image/pxe_image.c | 83 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 src/arch/i386/image/pxe_image.c

(limited to 'src/arch')

diff --git a/src/arch/i386/image/pxe_image.c b/src/arch/i386/image/pxe_image.c
new file mode 100644
index 000000000..f88c45970
--- /dev/null
+++ b/src/arch/i386/image/pxe_image.c
@@ -0,0 +1,83 @@
+/*
+ * 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.
+ */
+
+/**
+ * @file
+ *
+ * PXE image format
+ *
+ */
+
+#include <gpxe/uaccess.h>
+#include <gpxe/image.h>
+#include <gpxe/segment.h>
+#include <pxe_call.h>
+
+/** PXE load address segment */
+#define PXE_LOAD_SEGMENT 0
+
+/** PXE load address offset */
+#define PXE_LOAD_OFFSET 0x7c00
+
+struct image_type pxe_image_type __image_type ( PROBE_PXE );
+
+/**
+ * Execute PXE image
+ *
+ * @v image		PXE image
+ * @ret rc		Return status code
+ */
+static int pxe_exec ( struct image *image __unused ) {
+	return pxe_boot();
+}
+
+/**
+ * Load PXE image into memory
+ *
+ * @v image		PXE file
+ * @ret rc		Return status code
+ */
+int pxe_load ( struct image *image ) {
+	userptr_t buffer = real_to_user ( 0, 0x7c00 );
+	size_t filesz = image->len;
+	size_t memsz = image->len;
+	int rc;
+
+	/* There are no signature checks for PXE; we will accept anything */
+	if ( ! image->type )
+		image->type = &pxe_image_type;
+
+	/* Verify and prepare segment */
+	if ( ( rc = prep_segment ( buffer, filesz, memsz ) != 0 ) ) {
+		DBG ( "PXE image could not prepare segment: %s\n",
+		      strerror ( rc ) );
+		return rc;
+	}
+
+	/* Copy image to segment */
+	memcpy_user ( buffer, 0, image->data, 0, filesz );
+
+	return 0;
+}
+
+/** PXE image type */
+struct image_type pxe_image_type __image_type ( PROBE_PXE ) = {
+	.name = "PXE",
+	.load = pxe_load,
+	.exec = pxe_exec,
+};
-- 
cgit v1.2.3-55-g7522