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timestamps: Switch from tsc_t to uint64_t

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Cherry-pick from chromium and adjusted for added boards
and changed directory layout for arch/arm.

Timestamp implementation for ARMv7

Abstract the use of rdtsc() and make the timestamps
uint64_t in the generic code.

The ARM implementation uses the monotonic timer.

Original-Signed-off-by: Stefan Reinauer <reinauer@google.com>

BRANCH=none
BUG=chrome-os-partner:18637
TEST=See cbmem print timestamps

Original-Change-Id: Id377ba570094c44e6895ae75f8d6578c8865ea62
Original-Reviewed-on: https://gerrit.chromium.org/gerrit/63793
(cherry-picked from commit cc1a75e059020a39146e25b9198b0d58aa03924c)

Change-Id: Ic51fb78ddd05ba81906d9c3b35043fa14fbbed75
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8020
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
This commit is contained in:
Stefan Reinauer
2013-08-01 13:31:44 -07:00
committed by Kyösti Mälkki
parent 83405a1241
commit 3a6550d989
22 changed files with 137 additions and 124 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
src/include/cpu/x86/tsc.h
View File

@@ -53,6 +53,11 @@ static inline unsigned long long rdtscll(void)
);
return val;
}
static inline uint64_t tsc_to_uint64(tsc_t tstamp)
{
return (((uint64_t)tstamp.hi) << 32) + tstamp.lo;
}
#endif
#if CONFIG_TSC_CONSTANT_RATE

12
src/include/timestamp.h
View File

@@ -20,6 +20,8 @@
#ifndef __TIMESTAMP_H__
#define __TIMESTAMP_H__
#include <stdint.h>
struct timestamp_entry {
uint32_t entry_id;
uint64_t entry_stamp;
@@ -59,12 +61,10 @@ enum timestamp_id {
};
#if CONFIG_COLLECT_TIMESTAMPS && (CONFIG_EARLY_CBMEM_INIT || !defined(__PRE_RAM__))
#include <cpu/x86/tsc.h>
void timestamp_init(tsc_t base);
void timestamp_add(enum timestamp_id id, tsc_t ts_time);
void timestamp_init(uint64_t base);
void timestamp_add(enum timestamp_id id, uint64_t ts_time);
void timestamp_add_now(enum timestamp_id id);
void timestamp_reinit(void);
tsc_t get_initial_timestamp(void);
#else
#define timestamp_init(base)
#define timestamp_add(id, time)
@@ -72,4 +72,8 @@ tsc_t get_initial_timestamp(void);
#define timestamp_reinit()
#endif
/* Implemented by the architecture code */
uint64_t timestamp_get(void);
uint64_t get_initial_timestamp(void);
#endif