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x86 setup: handle more than 8 CPU flag words

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Checkin e38e05a858 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>
This commit is contained in:
H. Peter Anvin 2008-09-16 15:09:26 -07:00
parent a9853dd6d2
commit 97fc0555da
2 changed files with 27 additions and 26 deletions
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17
arch/x86/boot/cpu.c
View File

@ -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);
}

36
arch/x86/boot/mkcpustr.c
View File

@ -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];
for (i = 0; i < NCAPINTS; i++) {
for (j = 0; j < 32; j++) {
str = x86_cap_flags[i*32+j];
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);
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");