gpxe: delete long since obsolete snapshot of gPXE

gPXE has been deprecated in favor of iPXE for many, many years now.
It is much better than users get it directly from the iPXE project,
since we should no longer need any special modifications for Syslinux
use.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 0 insertions, 263 deletions

diff --git a/gpxe/src/core/nvo.c b/gpxe/src/core/nvo.c
deleted file mode 100644
index 3dbf51d3..00000000
--- a/gpxe/src/core/nvo.c
+++ /dev/null
@@ -1,263 +0,0 @@
-/*
- * Copyright (C) 2006 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_LICENCE ( GPL2_OR_LATER );
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <gpxe/dhcp.h>
-#include <gpxe/nvs.h>
-#include <gpxe/nvo.h>
-
-/** @file
- *
- * Non-volatile stored options
- *
- */
-
-/**
- * Calculate checksum over non-volatile stored options
- *
- * @v nvo		Non-volatile options block
- * @ret sum		Checksum
- */
-static unsigned int nvo_checksum ( struct nvo_block *nvo ) {
-	uint8_t *data = nvo->data;
-	uint8_t sum = 0;
-	unsigned int i;
-
-	for ( i = 0 ; i < nvo->total_len ; i++ ) {
-		sum += *(data++);
-	}
-	return sum;
-}
-
-/**
- * Load non-volatile stored options from non-volatile storage device
- *
- * @v nvo		Non-volatile options block
- * @ret rc		Return status code
- */
-static int nvo_load ( struct nvo_block *nvo ) {
-	void *data = nvo->data;
-	struct nvo_fragment *frag;
-	int rc;
-
-	/* Read data a fragment at a time */
-	for ( frag = nvo->fragments ; frag->len ; frag++ ) {
-		if ( ( rc = nvs_read ( nvo->nvs, frag->address, data,
-				       frag->len ) ) != 0 ) {
-			DBGC ( nvo, "NVO %p could not read %zd bytes at "
-			       "%#04x\n", nvo, frag->len, frag->address );
-			return rc;
-		}
-		data += frag->len;
-	}
-
-	DBGC ( nvo, "NVO %p loaded from non-volatile storage\n", nvo );
-	return 0;
-}
-
-/**
- * Save non-volatile stored options back to non-volatile storage device
- *
- * @v nvo		Non-volatile options block
- * @ret rc		Return status code
- */
-static int nvo_save ( struct nvo_block *nvo ) {
-	void *data = nvo->data;
-	uint8_t *checksum = data;
-	struct nvo_fragment *frag;
-	int rc;
-
-	/* Recalculate checksum */
-	*checksum -= nvo_checksum ( nvo );
-
-	/* Write data a fragment at a time */
-	for ( frag = nvo->fragments ; frag->len ; frag++ ) {
-		if ( ( rc = nvs_write ( nvo->nvs, frag->address, data,
-					frag->len ) ) != 0 ) {
-			DBGC ( nvo, "NVO %p could not write %zd bytes at "
-			       "%#04x\n", nvo, frag->len, frag->address );
-			return rc;
-		}
-		data += frag->len;
-	}
-
-	DBGC ( nvo, "NVO %p saved to non-volatile storage\n", nvo );
-	return 0;
-}
-
-/**
- * Parse stored options
- *
- * @v nvo		Non-volatile options block
- *
- * Verifies that the options data is valid, and configures the DHCP
- * options block.  If the data is not valid, it is replaced with an
- * empty options block.
- */
-static void nvo_init_dhcpopts ( struct nvo_block *nvo ) {
-	uint8_t *options_data;
-	size_t options_len;
-
-	/* Steal one byte for the checksum */
-	options_data = ( nvo->data + 1 );
-	options_len = ( nvo->total_len - 1 );
-
-	/* If checksum fails, or options data starts with a zero,
-	 * assume the whole block is invalid.  This should capture the
-	 * case of random initial contents.
-	 */
-	if ( ( nvo_checksum ( nvo ) != 0 ) || ( options_data[0] == 0 ) ) {
-		DBGC ( nvo, "NVO %p has checksum %02x and initial byte %02x; "
-		       "assuming empty\n", nvo, nvo_checksum ( nvo ),
-		       options_data[0] );
-		memset ( nvo->data, 0, nvo->total_len );
-	}
-
-	dhcpopt_init ( &nvo->dhcpopts, options_data, options_len );
-}
-
-/**
- * Store value of NVO setting
- *
- * @v settings		Settings block
- * @v setting		Setting to store
- * @v data		Setting data, or NULL to clear setting
- * @v len		Length of setting data
- * @ret rc		Return status code
- */
-static int nvo_store ( struct settings *settings, struct setting *setting,
-		       const void *data, size_t len ) {
-	struct nvo_block *nvo =
-		container_of ( settings, struct nvo_block, settings );
-	int rc;
-
-	/* Update stored options */
-	if ( ( rc = dhcpopt_store ( &nvo->dhcpopts, setting->tag,
-				    data, len ) ) != 0 ) {
-		DBGC ( nvo, "NVO %p could not store %zd bytes: %s\n",
-		       nvo, len, strerror ( rc ) );
-		return rc;
-	}
-
-	/* Save updated options to NVS */
-	if ( ( rc = nvo_save ( nvo ) ) != 0 )
-		return rc;
-
-	return 0;
-}
-
-/**
- * Fetch value of NVO setting
- *
- * @v settings		Settings block
- * @v setting		Setting to fetch
- * @v data		Buffer to fill with setting data
- * @v len		Length of buffer
- * @ret len		Length of setting data, or negative error
- *
- * The actual length of the setting will be returned even if
- * the buffer was too small.
- */
-static int nvo_fetch ( struct settings *settings, struct setting *setting,
-		       void *data, size_t len ) {
-	struct nvo_block *nvo =
-		container_of ( settings, struct nvo_block, settings );
-
-	return dhcpopt_fetch ( &nvo->dhcpopts, setting->tag, data, len );
-}
-
-/** NVO settings operations */
-static struct settings_operations nvo_settings_operations = {
-	.store = nvo_store,
-	.fetch = nvo_fetch,
-};
-
-/**
- * Initialise non-volatile stored options
- *
- * @v nvo		Non-volatile options block
- * @v nvs		Underlying non-volatile storage device
- * @v fragments		List of option-containing fragments
- * @v refcnt		Containing object reference counter, or NULL
- */
-void nvo_init ( struct nvo_block *nvo, struct nvs_device *nvs,
-		struct nvo_fragment *fragments, struct refcnt *refcnt ) {
-	nvo->nvs = nvs;
-	nvo->fragments = fragments;
-	settings_init ( &nvo->settings, &nvo_settings_operations, refcnt,
-			"nvo", 0 );
-}
-
-/**
- * Register non-volatile stored options
- *
- * @v nvo		Non-volatile options block
- * @v parent		Parent settings block, or NULL
- * @ret rc		Return status code
- */
-int register_nvo ( struct nvo_block *nvo, struct settings *parent ) {
-	struct nvo_fragment *fragment = nvo->fragments;
-	int rc;
-
-	/* Calculate total length of all fragments */
-	for ( fragment = nvo->fragments ; fragment->len ; fragment++ )
-		nvo->total_len += fragment->len;
-
-	/* Allocate memory for options and read in from NVS */
-	nvo->data = malloc ( nvo->total_len );
-	if ( ! nvo->data ) {
-		DBGC ( nvo, "NVO %p could not allocate %zd bytes\n",
-		       nvo, nvo->total_len );
-		rc = -ENOMEM;
-		goto err_malloc;
-	}
-	if ( ( rc = nvo_load ( nvo ) ) != 0 )
-		goto err_load;
-
-	/* Verify and register options */
-	nvo_init_dhcpopts ( nvo );
-	if ( ( rc = register_settings ( &nvo->settings, parent ) ) != 0 )
-		goto err_register;
-
-	DBGC ( nvo, "NVO %p registered\n", nvo );
-	return 0;
-	
- err_register:
- err_load:
-	free ( nvo->data );
-	nvo->data = NULL;
- err_malloc:
-	return rc;
-}
-
-/**
- * Unregister non-volatile stored options
- *
- * @v nvo		Non-volatile options block
- */
-void unregister_nvo ( struct nvo_block *nvo ) {
-	unregister_settings ( &nvo->settings );
-	free ( nvo->data );
-	nvo->data = NULL;
-	DBGC ( nvo, "NVO %p unregistered\n", nvo );
-}