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authorH. Peter Anvin <hpa@zytor.com>2008-09-16 15:09:26 -0700
committerH. Peter Anvin <hpa@zytor.com>2008-09-16 15:09:26 -0700
commit97fc0555dae8f4d437c8672c14d7191962429be4 (patch)
tree7cef9de931b66e43751c6535e5fcfdbb8389f307 /arch
parenta9853dd6d285c30a3ddeb3cce8c05e1678400bef (diff)
x86 setup: handle more than 8 CPU flag words
Checkin e38e05a85828dac23540cd007df5f20985388afc added a 9th CPU flag word, but didn't adjust the boot code to match. This patch adds the necessary boot code support. Note: due to a typo in an #if statement, it didn't trigger the #error this was supposed to do. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/boot/cpu.c17
-rw-r--r--arch/x86/boot/mkcpustr.c38
2 files changed, 28 insertions, 27 deletions
diff --git a/arch/x86/boot/cpu.c b/arch/x86/boot/cpu.c
index 75298fe2edc..6ec6bb6e995 100644
--- a/arch/x86/boot/cpu.c
+++ b/arch/x86/boot/cpu.c
@@ -59,17 +59,18 @@ int validate_cpu(void)
u32 e = err_flags[i];
for (j = 0; j < 32; j++) {
- int n = (i << 5)+j;
- if (*msg_strs < n) {
+ if (msg_strs[0] < i ||
+ (msg_strs[0] == i && msg_strs[1] < j)) {
/* Skip to the next string */
- do {
- msg_strs++;
- } while (*msg_strs);
- msg_strs++;
+ msg_strs += 2;
+ while (*msg_strs++)
+ ;
}
if (e & 1) {
- if (*msg_strs == n && msg_strs[1])
- printf("%s ", msg_strs+1);
+ if (msg_strs[0] == i &&
+ msg_strs[1] == j &&
+ msg_strs[2])
+ printf("%s ", msg_strs+2);
else
printf("%d:%d ", i, j);
}
diff --git a/arch/x86/boot/mkcpustr.c b/arch/x86/boot/mkcpustr.c
index 4589caa3e9d..8ef60f20b37 100644
--- a/arch/x86/boot/mkcpustr.c
+++ b/arch/x86/boot/mkcpustr.c
@@ -17,31 +17,31 @@
#include "../kernel/cpu/capflags.c"
-#if NCAPFLAGS > 8
-# error "Need to adjust the boot code handling of CPUID strings"
-#endif
-
int main(void)
{
- int i;
+ int i, j;
const char *str;
printf("static const char x86_cap_strs[] = \n");
- for (i = 0; i < NCAPINTS*32; i++) {
- str = x86_cap_flags[i];
-
- if (i == NCAPINTS*32-1) {
- /* The last entry must be unconditional; this
- also consumes the compiler-added null character */
- if (!str)
- str = "";
- printf("\t\"\\x%02x\"\"%s\"\n", i, str);
- } else if (str) {
- printf("#if REQUIRED_MASK%d & (1 << %d)\n"
- "\t\"\\x%02x\"\"%s\\0\"\n"
- "#endif\n",
- i >> 5, i & 31, i, str);
+ for (i = 0; i < NCAPINTS; i++) {
+ for (j = 0; j < 32; j++) {
+ str = x86_cap_flags[i*32+j];
+
+ if (i == NCAPINTS-1 && j == 31) {
+ /* The last entry must be unconditional; this
+ also consumes the compiler-added null
+ character */
+ if (!str)
+ str = "";
+ printf("\t\"\\x%02x\\x%02x\"\"%s\"\n",
+ i, j, str);
+ } else if (str) {
+ printf("#if REQUIRED_MASK%d & (1 << %d)\n"
+ "\t\"\\x%02x\\x%02x\"\"%s\\0\"\n"
+ "#endif\n",
+ i, j, i, j, str);
+ }
}
}
printf("\t;\n");