diff options
| -rw-r--r-- | src/soc/intel/common/block/timer/Kconfig | 4 | ||||
| -rw-r--r-- | src/soc/intel/common/block/timer/Makefile.inc | 6 | ||||
| -rw-r--r-- | src/soc/intel/common/block/timer/timer.c | 24 |
3 files changed, 34 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/timer/Kconfig b/src/soc/intel/common/block/timer/Kconfig new file mode 100644 index 0000000000..a4150459aa --- /dev/null +++ b/src/soc/intel/common/block/timer/Kconfig @@ -0,0 +1,4 @@ +config SOC_INTEL_COMMON_BLOCK_TIMER + bool + help + Intel Processor common TIMER support diff --git a/src/soc/intel/common/block/timer/Makefile.inc b/src/soc/intel/common/block/timer/Makefile.inc new file mode 100644 index 0000000000..b562c50781 --- /dev/null +++ b/src/soc/intel/common/block/timer/Makefile.inc @@ -0,0 +1,6 @@ +bootblock-$(CONFIG_SOC_INTEL_COMMON_BLOCK_TIMER) += timer.c +verstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_TIMER) += timer.c +romstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_TIMER) += timer.c +ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_TIMER) += timer.c +smm-$(CONFIG_SOC_INTEL_COMMON_BLOCK_TIMER) += timer.c +postcar-$(CONFIG_SOC_INTEL_COMMON_BLOCK_TIMER) += timer.c diff --git a/src/soc/intel/common/block/timer/timer.c b/src/soc/intel/common/block/timer/timer.c new file mode 100644 index 0000000000..12988856e4 --- /dev/null +++ b/src/soc/intel/common/block/timer/timer.c @@ -0,0 +1,24 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <cpu/x86/msr.h> +#include <cpu/x86/tsc.h> +#include <intelblocks/msr.h> + +unsigned long tsc_freq_mhz(void) +{ + msr_t msr = rdmsr(MSR_PLATFORM_INFO); + return (CONFIG_CPU_BCLK_MHZ * ((msr.lo >> 8) & 0xff)); +} |