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Diffstat (limited to 'src/soc/intel/broadwell/broadwell/cpu.h')
| -rw-r--r-- | src/soc/intel/broadwell/broadwell/cpu.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/soc/intel/broadwell/broadwell/cpu.h b/src/soc/intel/broadwell/broadwell/cpu.h new file mode 100644 index 0000000000..0f6f593736 --- /dev/null +++ b/src/soc/intel/broadwell/broadwell/cpu.h @@ -0,0 +1,72 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Google Inc. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef _BROADWELL_CPU_H_ +#define _BROADWELL_CPU_H_ + +#include <arch/cpu.h> +#include <device/device.h> + +/* CPU types */ +#define HASWELL_FAMILY_ULT 0x40650 +#define BROADWELL_FAMILY_ULT 0x306d0 + +/* Supported CPUIDs */ +#define CPUID_HASWELL_A0 0x306c1 +#define CPUID_HASWELL_B0 0x306c2 +#define CPUID_HASWELL_C0 0x306c3 +#define CPUID_HASWELL_ULT_B0 0x40650 +#define CPUID_HASWELL_ULT 0x40651 +#define CPUID_HASWELL_HALO 0x40661 +#define CPUID_BROADWELL_C0 0x306d2 +#define CPUID_BROADWELL_D0 0x306d3 + +/* CPU bus clock is fixed at 100MHz */ +#define CPU_BCLK 100 + +/* Latency times in units of 1024ns. */ +#define C_STATE_LATENCY_CONTROL_0_LIMIT 0x42 +#define C_STATE_LATENCY_CONTROL_1_LIMIT 0x73 +#define C_STATE_LATENCY_CONTROL_2_LIMIT 0x91 +#define C_STATE_LATENCY_CONTROL_3_LIMIT 0xe4 +#define C_STATE_LATENCY_CONTROL_4_LIMIT 0x145 +#define C_STATE_LATENCY_CONTROL_5_LIMIT 0x1ef + +#define C_STATE_LATENCY_MICRO_SECONDS(limit, base) \ + (((1 << ((base)*5)) * (limit)) / 1000) +#define C_STATE_LATENCY_FROM_LAT_REG(reg) \ + C_STATE_LATENCY_MICRO_SECONDS(C_STATE_LATENCY_CONTROL_ ##reg## _LIMIT, \ + (IRTL_1024_NS >> 10)) + +/* Configure power limits for turbo mode */ +void set_power_limits(u8 power_limit_1_time); +int cpu_config_tdp_levels(void); + +/* + * Determine if HyperThreading is disabled. + * The variable is not valid until setup_ap_init() has been called. + */ +extern int ht_disabled; + +/* CPU identification */ +u32 cpu_family_model(void); +u32 cpu_stepping(void); +int cpu_is_ult(void); + +#endif |