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x86: tsc: Identify Intel-specific code

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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>
This commit is contained in:
Bin Meng 2017-07-25 20:12:01 -07:00
parent d92e9c8d31
commit 0b992e4932
1 changed files with 4 additions and 0 deletions
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4
drivers/timer/tsc_timer.c
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@ -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;