2f6b472984
Add support for: 1) Using timestamps in bootblock and verstage 2) Allowing the timestamps to be stashed into _timestamp region so that they can be used across multiple stages 3) Performing operations over the timestamps in _timestamp region Instead of having two separate APIs for stashing and adding timestamps, let the timestamp library decide on its own where to save depending on timestamp cache status. Now the sequence of operations would be something like: timestamp_init / timestamp_early_init : Set the base time timestamp_add / timestamp_add_now cbmem_initialize : It internally calls timestamp_sync timestamp_add / timestamp_add_now BUG=chrome-os-partner:32973 BRANCH=None TEST=Compiles successfully for ryu and samus. cbmem -t on ryu works fine. Change-Id: Ie5ffda3112d626068bd1904afcc5a09bc4916d16 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: https://chromium-review.googlesource.com/224024 Reviewed-by: Furquan Shaikh <furquan@chromium.org> Commit-Queue: Furquan Shaikh <furquan@chromium.org> Tested-by: Furquan Shaikh <furquan@chromium.org>
104 lines
3.2 KiB
C
104 lines
3.2 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2011 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#ifndef __TIMESTAMP_H__
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#define __TIMESTAMP_H__
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#include <stdint.h>
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struct timestamp_entry {
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uint32_t entry_id;
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uint64_t entry_stamp;
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} __attribute__((packed));
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struct timestamp_table {
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uint64_t base_time;
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uint32_t max_entries;
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uint32_t num_entries;
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struct timestamp_entry entries[0]; /* Variable number of entries */
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} __attribute__((packed));
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enum timestamp_id {
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TS_START_ROMSTAGE = 1,
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TS_BEFORE_INITRAM = 2,
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TS_AFTER_INITRAM = 3,
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TS_END_ROMSTAGE = 4,
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TS_START_VBOOT = 5,
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TS_END_VBOOT = 6,
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TS_START_COPYRAM = 8,
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TS_END_COPYRAM = 9,
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TS_START_RAMSTAGE = 10,
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TS_START_BOOTBLOCK = 11,
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TS_END_BOOTBLOCK = 12,
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TS_DEVICE_ENUMERATE = 30,
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TS_DEVICE_CONFIGURE = 40,
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TS_DEVICE_ENABLE = 50,
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TS_DEVICE_INITIALIZE = 60,
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TS_DEVICE_DONE = 70,
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TS_CBMEM_POST = 75,
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TS_WRITE_TABLES = 80,
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TS_LOAD_PAYLOAD = 90,
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TS_ACPI_WAKE_JUMP = 98,
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TS_SELFBOOT_JUMP = 99,
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};
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#if CONFIG_COLLECT_TIMESTAMPS
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/*
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* Order of usage of timestamp library is:
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* Call timestamp_early_init / timestamp_init to set base time before any
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* timestamp_add function is called. timestamp_early_init also ensures that the
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* cache is valid in _timestamp region.
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* After this, timestamp_add / timestamp_add_now can be used to record
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* timestamps. Sync will be automatically taken care of by cbmem_initialize
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*/
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/*
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* Initialize the cache to a valid state and set the base time.
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* This function is used before DRAM is setup so that the timestamp cache can
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* be initialized in _timestamp region.
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* Both, timestamp_init and timestamp_early_init reset the cbmem state to
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* timestamp table reset required. Thus, whenever a timestamp_add or
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* timestamp_sync is done to add new entries into the cbmem timestamp table, it
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* first resets the table to 0 entries.
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*/
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void timestamp_early_init(uint64_t base);
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/* Initialize the base time for timestamps and mark cache as valid */
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void timestamp_init(uint64_t base);
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/*
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* Add a new timestamp. Depending on cbmem is available or not, this timestamp
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* will be stored to cbmem / timestamp cache.
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*/
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void timestamp_add(enum timestamp_id id, uint64_t ts_time);
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/* Calls timestamp_add with current timestamp. */
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void timestamp_add_now(enum timestamp_id id);
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/*
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* Sync all timestamps from timestamp_cache to cbmem area. Called by
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* cbmem_initialize.
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*/
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void timestamp_sync(void);
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/* Implemented by the architecture code */
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uint64_t timestamp_get(void);
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#else
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#define timestamp_early_init(base)
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#define timestamp_init(base)
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#define timestamp_add(id, time)
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#define timestamp_add_now(id)
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#define timestamp_sync()
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#endif
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#endif
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