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-rw-r--r--arch/i386/boot/cmdline.c97
1 files changed, 0 insertions, 97 deletions
diff --git a/arch/i386/boot/cmdline.c b/arch/i386/boot/cmdline.c
deleted file mode 100644
index 34bb778c4357..000000000000
--- a/arch/i386/boot/cmdline.c
+++ /dev/null
@@ -1,97 +0,0 @@
-/* -*- linux-c -*- ------------------------------------------------------- *
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- * Copyright 2007 rPath, Inc. - All Rights Reserved
- *
- * This file is part of the Linux kernel, and is made available under
- * the terms of the GNU General Public License version 2.
- *
- * ----------------------------------------------------------------------- */
-
-/*
- * arch/i386/boot/cmdline.c
- *
- * Simple command-line parser for early boot.
- */
-
-#include "boot.h"
-
-static inline int myisspace(u8 c)
-{
- return c <= ' '; /* Close enough approximation */
-}
-
-/*
- * Find a non-boolean option, that is, "option=argument". In accordance
- * with standard Linux practice, if this option is repeated, this returns
- * the last instance on the command line.
- *
- * Returns the length of the argument (regardless of if it was
- * truncated to fit in the buffer), or -1 on not found.
- */
-int cmdline_find_option(const char *option, char *buffer, int bufsize)
-{
- u32 cmdline_ptr = boot_params.hdr.cmd_line_ptr;
- addr_t cptr;
- char c;
- int len = -1;
- const char *opptr = NULL;
- char *bufptr = buffer;
- enum {
- st_wordstart, /* Start of word/after whitespace */
- st_wordcmp, /* Comparing this word */
- st_wordskip, /* Miscompare, skip */
- st_bufcpy /* Copying this to buffer */
- } state = st_wordstart;
-
- if (!cmdline_ptr || cmdline_ptr >= 0x100000)
- return -1; /* No command line, or inaccessible */
-
- cptr = cmdline_ptr & 0xf;
- set_fs(cmdline_ptr >> 4);
-
- while (cptr < 0x10000 && (c = rdfs8(cptr++))) {
- switch (state) {
- case st_wordstart:
- if (myisspace(c))
- break;
-
- /* else */
- state = st_wordcmp;
- opptr = option;
- /* fall through */
-
- case st_wordcmp:
- if (c == '=' && !*opptr) {
- len = 0;
- bufptr = buffer;
- state = st_bufcpy;
- } else if (myisspace(c)) {
- state = st_wordstart;
- } else if (c != *opptr++) {
- state = st_wordskip;
- }
- break;
-
- case st_wordskip:
- if (myisspace(c))
- state = st_wordstart;
- break;
-
- case st_bufcpy:
- if (myisspace(c)) {
- state = st_wordstart;
- } else {
- if (len < bufsize-1)
- *bufptr++ = c;
- len++;
- }
- break;
- }
- }
-
- if (bufsize)
- *bufptr = '\0';
-
- return len;
-}
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