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authorH. Peter Anvin <hpa@zytor.com>2016-02-09 18:08:47 -0800
committerH. Peter Anvin <hpa@zytor.com>2016-02-09 18:08:47 -0800
commitf2f897a1762fab84d2905f32b1c15dd7b42abb56 (patch)
treea38f51d3f1fcbf44afddb4736d549c12eaf491be /gpxe/src/drivers/nvs/nvs.c
parent72d2959272b4616f17a97667e6dfa9d06bf109a3 (diff)
downloadsyslinux-f2f897a1762fab84d2905f32b1c15dd7b42abb56.tar.gz
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>
Diffstat (limited to 'gpxe/src/drivers/nvs/nvs.c')
-rw-r--r--gpxe/src/drivers/nvs/nvs.c149
1 files changed, 0 insertions, 149 deletions
diff --git a/gpxe/src/drivers/nvs/nvs.c b/gpxe/src/drivers/nvs/nvs.c
deleted file mode 100644
index 7252808b..00000000
--- a/gpxe/src/drivers/nvs/nvs.c
+++ /dev/null
@@ -1,149 +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 <string.h>
-#include <errno.h>
-#include <assert.h>
-#include <gpxe/nvs.h>
-
-/** @file
- *
- * Non-volatile storage
- *
- */
-
-/**
- * Read from non-volatile storage device
- *
- * @v nvs NVS device
- * @v address Address from which to read
- * @v data Data buffer
- * @v len Length of data buffer
- * @ret rc Return status code
- */
-int nvs_read ( struct nvs_device *nvs, unsigned int address,
- void *data, size_t len ) {
- size_t frag_len;
- int rc;
-
- /* We don't even attempt to handle buffer lengths that aren't
- * an integral number of words.
- */
- assert ( ( len & ( ( 1 << nvs->word_len_log2 ) - 1 ) ) == 0 );
-
- while ( len ) {
-
- /* Calculate space remaining up to next block boundary */
- frag_len = ( ( nvs->block_size -
- ( address & ( nvs->block_size - 1 ) ) )
- << nvs->word_len_log2 );
-
- /* Limit to space remaining in buffer */
- if ( frag_len > len )
- frag_len = len;
-
- /* Read this portion of the buffer from the device */
- if ( ( rc = nvs->read ( nvs, address, data, frag_len ) ) != 0 )
- return rc;
-
- /* Update parameters */
- data += frag_len;
- address += ( frag_len >> nvs->word_len_log2 );
- len -= frag_len;
- }
-
- return 0;
-}
-
-/**
- * Verify content of non-volatile storage device
- *
- * @v nvs NVS device
- * @v address Address from which to read
- * @v data Data to compare against
- * @v len Length of data buffer
- * @ret rc Return status code
- */
-static int nvs_verify ( struct nvs_device *nvs, unsigned int address,
- const void *data, size_t len ) {
- uint8_t read_data[len];
- int rc;
-
- /* Read data into temporary buffer */
- if ( ( rc = nvs_read ( nvs, address, read_data, len ) ) != 0 )
- return rc;
-
- /* Compare data */
- if ( memcmp ( data, read_data, len ) != 0 ) {
- DBG ( "NVS %p verification failed at %#04x+%zd\n",
- nvs, address, len );
- return -EIO;
- }
-
- return 0;
-}
-
-/**
- * Write to non-volatile storage device
- *
- * @v nvs NVS device
- * @v address Address to which to write
- * @v data Data buffer
- * @v len Length of data buffer
- * @ret rc Return status code
- */
-int nvs_write ( struct nvs_device *nvs, unsigned int address,
- const void *data, size_t len ) {
- size_t frag_len;
- int rc;
-
- /* We don't even attempt to handle buffer lengths that aren't
- * an integral number of words.
- */
- assert ( ( len & ( ( 1 << nvs->word_len_log2 ) - 1 ) ) == 0 );
-
- while ( len ) {
-
- /* Calculate space remaining up to next block boundary */
- frag_len = ( ( nvs->block_size -
- ( address & ( nvs->block_size - 1 ) ) )
- << nvs->word_len_log2 );
-
- /* Limit to space remaining in buffer */
- if ( frag_len > len )
- frag_len = len;
-
- /* Write this portion of the buffer to the device */
- if ( ( rc = nvs->write ( nvs, address, data, frag_len ) ) != 0)
- return rc;
-
- /* Read back and verify data */
- if ( ( rc = nvs_verify ( nvs, address, data, frag_len ) ) != 0)
- return rc;
-
- /* Update parameters */
- data += frag_len;
- address += ( frag_len >> nvs->word_len_log2 );
- len -= frag_len;
- }
-
- return 0;
-}