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| author | Bin Meng <bmeng.cn@gmail.com> | 2017-07-25 20:12:01 -0700 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2017-08-01 20:17:02 +0800 |
| commit | 0b992e4932303b0a379f590f67ec9759fc97275e (patch) | |
| tree | 9cfd3fca8d2935e6697c9a1f4b3afc079eee7ab0 /drivers/timer/tsc_timer.c | |
| parent | d92e9c8d313134f2ebde14a393f820b2191f4011 (diff) | |
| download | u-boot-0b992e4932303b0a379f590f67ec9759fc97275e.tar.gz u-boot-0b992e4932303b0a379f590f67ec9759fc97275e.tar.bz2 u-boot-0b992e4932303b0a379f590f67ec9759fc97275e.zip | |
x86: tsc: Identify Intel-specific code
try_msr_calibrate_tsc() is currently Intel-specific, and should not
execute on any other vendor's parts.
This keeps in sync with Linux kernel commit:
ba82683: x86/tsc_msr: Identify Intel-specific code
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/timer/tsc_timer.c')
| -rw-r--r-- | drivers/timer/tsc_timer.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/timer/tsc_timer.c b/drivers/timer/tsc_timer.c index ffbc7091fa..4d01c9bce7 100644 --- a/drivers/timer/tsc_timer.c +++ b/drivers/timer/tsc_timer.c @@ -11,6 +11,7 @@ #include <dm.h> #include <malloc.h> #include <timer.h> +#include <asm/cpu.h> #include <asm/io.h> #include <asm/i8254.h> #include <asm/ibmpc.h> @@ -86,6 +87,9 @@ static unsigned long __maybe_unused try_msr_calibrate_tsc(void) unsigned long res; int cpu_index; + if (gd->arch.x86_vendor != X86_VENDOR_INTEL) + return 0; + cpu_index = match_cpu(gd->arch.x86, gd->arch.x86_model); if (cpu_index < 0) return 0; |