diff options
| author | Simon Glass <sjg@chromium.org> | 2019-09-25 08:11:35 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2019-10-08 13:57:35 +0800 |
| commit | d3abc5d1ee5ffea5647a22ddfff82c01d507f962 (patch) | |
| tree | d8d587df264e55eed155acd965fe430e37238aa6 /arch/x86/include/asm/cpu_common.h | |
| parent | 46dd41fa5a8f08af903c7f0cfde9abfc16d7efe3 (diff) | |
x86: Move common Intel CPU info code into a function
Add cpu_intel_get_info() to find out the CPU info on modern Intel CPUs.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: add parameter and return value descriptions]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'arch/x86/include/asm/cpu_common.h')
| -rw-r--r-- | arch/x86/include/asm/cpu_common.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cpu_common.h b/arch/x86/include/asm/cpu_common.h index 4c91a5dace..5e398bec94 100644 --- a/arch/x86/include/asm/cpu_common.h +++ b/arch/x86/include/asm/cpu_common.h @@ -8,6 +8,8 @@ #define IA32_PERF_CTL 0x199 +struct cpu_info; + /** * cpu_common_init() - Set up common CPU init * @@ -31,4 +33,18 @@ int cpu_common_init(void); */ int cpu_set_flex_ratio_to_tdp_nominal(void); +/** + * cpu_intel_get_info() - Obtain CPU info for Intel CPUs + * + * Most Intel CPUs use the same MSR to obtain the clock speed, and use the same + * features. This function fills in these values, given the value of the base + * clock in MHz (typically this should be set to 100). + * + * @info: cpu_info struct to fill in + * @bclk_mz: the base clock in MHz + * + * @return 0 always + */ +int cpu_intel_get_info(struct cpu_info *info, int bclk_mz); + #endif |