1 /* -*- linux-c -*- ------------------------------------------------------- *
3 * Copyright (C) 1991, 1992 Linus Torvalds
4 * Copyright 2007-2008 rPath, Inc. - All Rights Reserved
6 * This file is part of the Linux kernel, and is made available under
7 * the terms of the GNU General Public License version 2.
9 * ----------------------------------------------------------------------- */
14 * Check for obligatory CPU features and abort if the features are not
19 #ifdef CONFIG_X86_FEATURE_NAMES
23 static char *cpu_name(int level)
32 sprintf(buf, "i%d86", level);
37 static void show_cap_strs(u32 *err_flags)
40 #ifdef CONFIG_X86_FEATURE_NAMES
41 const unsigned char *msg_strs = (const unsigned char *)x86_cap_strs;
42 for (i = 0; i < NCAPINTS; i++) {
44 for (j = 0; j < 32; j++) {
45 if (msg_strs[0] < i ||
46 (msg_strs[0] == i && msg_strs[1] < j)) {
47 /* Skip to the next string */
53 if (msg_strs[0] == i &&
56 printf("%s ", msg_strs+2);
58 printf("%d:%d ", i, j);
64 for (i = 0; i < NCAPINTS; i++) {
66 for (j = 0; j < 32; j++) {
68 printf("%d:%d ", i, j);
75 int validate_cpu(void)
78 int cpu_level, req_level;
80 check_cpu(&cpu_level, &req_level, &err_flags);
82 if (cpu_level < req_level) {
83 printf("This kernel requires an %s CPU, ",
85 printf("but only detected an %s CPU.\n",
91 puts("This kernel requires the following features "
92 "not present on the CPU:\n");
93 show_cap_strs(err_flags);