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Diffstat (limited to 'src/soc/intel/apollolake/tsc_freq.c')
-rw-r--r--src/soc/intel/apollolake/tsc_freq.c62
1 files changed, 0 insertions, 62 deletions
diff --git a/src/soc/intel/apollolake/tsc_freq.c b/src/soc/intel/apollolake/tsc_freq.c
deleted file mode 100644
index 18d28d80f0..0000000000
--- a/src/soc/intel/apollolake/tsc_freq.c
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2015 Intel Corp.
- *
- * 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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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/intel/speedstep.h>
-#include <cpu/intel/turbo.h>
-#include <cpu/x86/msr.h>
-#include <cpu/x86/tsc.h>
-#include <soc/cpu.h>
-#include <console/console.h>
-#include <delay.h>
-#include "chip.h"
-
-void set_max_freq(void)
-{
- msr_t msr, msr_rd;
- unsigned int eax;
-
- eax = cpuid_eax(CPUID_LEAF_PM);
-
- msr = rdmsr(MSR_IA32_MISC_ENABLES);
- eax &= 0x2;
- if ((!eax) && ((msr.hi & APL_BURST_MODE_DISABLE) == 0)) {
- /* Burst Mode has been factory configured as disabled
- * and is not available in this physical processor
- * package.
- */
- printk(BIOS_DEBUG, "Burst Mode is factory disabled\n");
- return;
- }
-
- /* Enable burst mode */
- msr.hi &= ~APL_BURST_MODE_DISABLE;
- wrmsr(MSR_IA32_MISC_ENABLES, msr);
-
- /* Enable speed step. */
- msr = rdmsr(MSR_IA32_MISC_ENABLES);
- msr.lo |= 1 << 16;
- wrmsr(MSR_IA32_MISC_ENABLES, msr);
-
- /* Set P-State ratio */
- msr = rdmsr(IA32_PERF_CTL);
- msr.lo &= ~0xff00;
-
- /* Read the frequency limit ratio and set it properly in PERF_CTL */
- msr_rd = rdmsr(FREQ_LIMIT_RATIO);
- msr.lo |= (msr_rd.lo & 0xff) << 8;
-
- wrmsr(IA32_PERF_CTL, msr);
-}