From 6f72d6965c7c54df663f2337e6154daf4dd464ff Mon Sep 17 00:00:00 2001 From: Vadim Bendebury Date: Wed, 21 Sep 2011 16:12:39 -0700 Subject: Add timestamp collecting to coreboot. This patch adds code to initialize the time stamp collection facility in coreboot. It adds a table in the CBMEM section, which provides the base timer reading value (all other readings are offsets of this one) and an array of timestamp id/timestamp value pairs. Just two values are being added now, this will have to be used more extensively and also integrated into payloads to provide more comprehensive boot process time measurements. Also, since the CBMEM area could already contain a section (from the previous run, before reset), when processing a section addition request we should check if a section already exists and return its address, if so. Change-Id: I7ed9f5c400bc5432f228348b41fd19a67c36d533 Signed-off-by: Vadim Bendebury Reviewed-on: http://review.coreboot.org/713 Reviewed-by: Ronald G. Minnich Tested-by: build bot (Jenkins) --- src/include/cbmem.h | 1 + src/include/timestamp.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 47 insertions(+) create mode 100644 src/include/timestamp.h (limited to 'src/include') diff --git a/src/include/cbmem.h b/src/include/cbmem.h index a681c36ea8..c3f10efee1 100644 --- a/src/include/cbmem.h +++ b/src/include/cbmem.h @@ -41,6 +41,7 @@ extern uint64_t high_tables_base, high_tables_size; #define CBMEM_ID_MPTABLE 0x534d5054 #define CBMEM_ID_RESUME 0x5245534d #define CBMEM_ID_SMBIOS 0x534d4254 +#define CBMEM_ID_TIMESTAMP 0x54494d45 #define CBMEM_ID_NONE 0x00000000 int cbmem_initialize(void); diff --git a/src/include/timestamp.h b/src/include/timestamp.h new file mode 100644 index 0000000000..cfa06e29fc --- /dev/null +++ b/src/include/timestamp.h @@ -0,0 +1,46 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. + * + * 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 __TIMESTAMP_H__ +#define __TIMESTAMP_H__ + +#include + +struct timestamp_entry { + uint32_t entry_id; + uint64_t entry_stamp; +} __attribute__((packed)); + +struct timestamp_table { + uint64_t base_time; + uint32_t max_entries; + uint32_t num_entries; + struct timestamp_entry entries[0]; /* Variable number of entries */ +} __attribute__((packed)); + +enum timestamp_id { + TS_BEFORE_INITRAM = 1, + TS_AFTER_INITRAM = 2, +}; + +void timestamp_init(tsc_t base); +void timestamp_add(enum timestamp_id id, tsc_t ts_time); +void timestamp_add_now(enum timestamp_id id); + +#endif -- cgit v1.2.3