ia64/linux-2.6.18-xen.hg

view arch/mips/arc/cmdline.c @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * cmdline.c: Kernel command line creation using ARCS argc/argv.
7 *
8 * Copyright (C) 1996 David S. Miller (dm@engr.sgi.com)
9 */
10 #include <linux/init.h>
11 #include <linux/kernel.h>
12 #include <linux/string.h>
14 #include <asm/sgialib.h>
15 #include <asm/bootinfo.h>
17 #undef DEBUG_CMDLINE
19 char * __init prom_getcmdline(void)
20 {
21 return arcs_cmdline;
22 }
24 static char *ignored[] = {
25 "ConsoleIn=",
26 "ConsoleOut=",
27 "SystemPartition=",
28 "OSLoader=",
29 "OSLoadPartition=",
30 "OSLoadFilename=",
31 "OSLoadOptions="
32 };
34 static char *used_arc[][2] = {
35 { "OSLoadPartition=", "root=" },
36 { "OSLoadOptions=", "" }
37 };
39 static char * __init move_firmware_args(char* cp)
40 {
41 char *s;
42 int actr, i;
44 actr = 1; /* Always ignore argv[0] */
46 while (actr < prom_argc) {
47 for(i = 0; i < ARRAY_SIZE(used_arc); i++) {
48 int len = strlen(used_arc[i][0]);
50 if (!strncmp(prom_argv(actr), used_arc[i][0], len)) {
51 /* Ok, we want it. First append the replacement... */
52 strcat(cp, used_arc[i][1]);
53 cp += strlen(used_arc[i][1]);
54 /* ... and now the argument */
55 s = strstr(prom_argv(actr), "=");
56 if (s) {
57 s++;
58 strcpy(cp, s);
59 cp += strlen(s);
60 }
61 *cp++ = ' ';
62 break;
63 }
64 }
65 actr++;
66 }
68 return cp;
69 }
71 void __init prom_init_cmdline(void)
72 {
73 char *cp;
74 int actr, i;
76 actr = 1; /* Always ignore argv[0] */
78 cp = arcs_cmdline;
79 /*
80 * Move ARC variables to the beginning to make sure they can be
81 * overridden by later arguments.
82 */
83 cp = move_firmware_args(cp);
85 while (actr < prom_argc) {
86 for (i = 0; i < ARRAY_SIZE(ignored); i++) {
87 int len = strlen(ignored[i]);
89 if (!strncmp(prom_argv(actr), ignored[i], len))
90 goto pic_cont;
91 }
92 /* Ok, we want it. */
93 strcpy(cp, prom_argv(actr));
94 cp += strlen(prom_argv(actr));
95 *cp++ = ' ';
97 pic_cont:
98 actr++;
99 }
101 if (cp != arcs_cmdline) /* get rid of trailing space */
102 --cp;
103 *cp = '\0';
105 #ifdef DEBUG_CMDLINE
106 printk(KERN_DEBUG "prom cmdline: %s\n", arcs_cmdline);
107 #endif
108 }