2 * Copyright (C) 2009 Sony Computer Entertainment Inc.
3 * Copyright 2009 Sony Corp.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #include <sys/types.h>
30 #include <system/system.h>
31 #include "talloc/talloc.h"
33 #include "ui-system.h"
36 * kexec_load - kexec load helper.
37 * @l_image: The local image file for kexec to execute.
38 * @l_initrd: Optional local initrd file for kexec --initrd, can be NULL.
39 * @args: Optional command line args for kexec --append, can be NULL.
42 static int kexec_load(const char *l_image, const char *l_initrd,
48 char *s_initrd = NULL;
52 *p++ = pb_system_apps.kexec; /* 1 */
56 s_initrd = talloc_asprintf(NULL, "--initrd=%s", l_initrd);
58 *p++ = s_initrd; /* 3 */
62 s_args = talloc_asprintf(NULL, "--append=%s", args);
64 *p++ = s_args; /* 4 */
67 *p++ = l_image; /* 5 */
70 result = pb_run_cmd(argv);
73 pb_log("%s: failed: (%d)\n", __func__, result);
75 talloc_free(s_initrd);
82 * kexec_reboot - Helper to boot the new kernel.
84 * Must only be called after a successful call to kexec_load().
87 static int kexec_reboot(void)
93 /* First try running shutdown. Init scripts should run 'exec -e' */
96 *p++ = pb_system_apps.shutdown; /* 1 */
101 result = pb_run_cmd(argv);
103 /* On error, force a kexec with the -e option */
107 *p++ = pb_system_apps.kexec; /* 1 */
111 result = pb_run_cmd(argv);
115 pb_log("%s: failed: (%d)\n", __func__, result);
121 * pb_run_kexec - Run kexec with the supplied boot options.
124 int pb_run_kexec(const struct pb_kexec_data *kd)
127 char *l_image = NULL;
128 char *l_initrd = NULL;
129 unsigned int clean_image = 0;
130 unsigned int clean_initrd = 0;
132 pb_log("%s: image: '%s'\n", __func__, kd->image);
133 pb_log("%s: initrd: '%s'\n", __func__, kd->initrd);
134 pb_log("%s: args: '%s'\n", __func__, kd->args);
139 l_image = pb_load_file(NULL, kd->image, &clean_image);
145 l_initrd = pb_load_file(NULL, kd->initrd, &clean_initrd);
150 if (!l_image && !l_initrd)
153 result = kexec_load(l_image, l_initrd, kd->args);
161 talloc_free(l_image);
162 talloc_free(l_initrd);
165 result = kexec_reboot();
171 * pb_elf_hash - Standard elf hash routine.
174 unsigned int pb_elf_hash(const char *str)
176 unsigned int h = 0, g;
179 h = (h << 4) + *str++;
185 pb_log("%s: %x\n", __func__, h);
190 * pb_cat_hash - Hashes concatenation of two strings.
193 unsigned int pb_cat_hash(const char *a, const char *b)
198 s = talloc_asprintf(NULL, "%s%s", a, b);