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Diffstat (limited to 'src/cpu/amd/family_10h-family_15h/monotonic_timer.c')
-rw-r--r--src/cpu/amd/family_10h-family_15h/monotonic_timer.c91
1 files changed, 0 insertions, 91 deletions
diff --git a/src/cpu/amd/family_10h-family_15h/monotonic_timer.c b/src/cpu/amd/family_10h-family_15h/monotonic_timer.c
deleted file mode 100644
index 51244b83ae..0000000000
--- a/src/cpu/amd/family_10h-family_15h/monotonic_timer.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * 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 <stdint.h>
-#include <arch/cpu.h>
-#include <cpu/x86/msr.h>
-#include <cpu/amd/msr.h>
-#include <timer.h>
-#include <device/pci.h>
-#include <device/pci_ops.h>
-#include <northbridge/amd/amdht/AsPsDefs.h>
-
-static struct monotonic_counter {
- int initialized;
- uint32_t core_frequency;
- struct mono_time time;
- uint64_t last_value;
-} mono_counter;
-
-static inline uint64_t read_counter_msr(void)
-{
- msr_t counter_msr;
-
- counter_msr = rdmsr(TSC_MSR);
-
- return ((uint64_t)counter_msr.hi << 32) | (uint64_t)counter_msr.lo;
-}
-
-static void init_timer(void)
-{
- uint8_t model;
- uint32_t cpuid_fms;
- uint8_t cpufid;
- uint8_t cpudid;
- uint8_t boost_capable = 0;
-
- /* Get CPU model */
- cpuid_fms = cpuid_eax(0x80000001);
- model = ((cpuid_fms & 0xf0000) >> 16) | ((cpuid_fms & 0xf0) >> 4);
-
- /* Get boost capability */
- if ((model == 0x8) || (model == 0x9)) { /* revision D */
- boost_capable = (pci_read_config32(pcidev_on_root(0x18, 4),
- 0x15c) & 0x4) >> 2;
- }
-
- /* Set up TSC (BKDG v3.62 section 2.9.4)*/
- msr_t msr = rdmsr(HWCR_MSR);
- msr.lo |= 0x1000000;
- wrmsr(HWCR_MSR, msr);
-
- /* Get core Pstate 0 frequency in MHz */
- msr = rdmsr(PSTATE_0_MSR + boost_capable);
- cpufid = (msr.lo & 0x3f);
- cpudid = (msr.lo & 0x1c0) >> 6;
- mono_counter.core_frequency = (100 * (cpufid + 0x10)) / (0x01 << cpudid);
-
- mono_counter.last_value = read_counter_msr();
- mono_counter.initialized = 1;
-}
-
-void timer_monotonic_get(struct mono_time *mt)
-{
- uint64_t current_tick;
- uint32_t usecs_elapsed = 0;
-
- if (!mono_counter.initialized)
- init_timer();
-
- current_tick = read_counter_msr();
- if (mono_counter.core_frequency != 0)
- usecs_elapsed = (current_tick - mono_counter.last_value) / mono_counter.core_frequency;
-
- /* Update current time and tick values only if a full tick occurred. */
- if (usecs_elapsed) {
- mono_time_add_usecs(&mono_counter.time, usecs_elapsed);
- mono_counter.last_value = current_tick;
- }
-
- /* Save result. */
- *mt = mono_counter.time;
-}