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author | Vadim Bendebury <vbendeb@chromium.org> | 2012-10-23 18:04:33 +0000 |
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committer | Simon Glass <sjg@chromium.org> | 2012-12-06 14:30:38 -0800 |
commit | 6dbe0cce3ffce8db8cffad7a16487ef9e3c95021 (patch) | |
tree | 4dcd6ab8fc2cf03072a0a6fa18c8bab295cd5398 /arch/x86/include/asm/arch-coreboot/timestamp.h | |
parent | 2f899e03a94cac4b092e4c013c6afda73178cc9f (diff) | |
download | u-boot-imx-6dbe0cce3ffce8db8cffad7a16487ef9e3c95021.zip u-boot-imx-6dbe0cce3ffce8db8cffad7a16487ef9e3c95021.tar.gz u-boot-imx-6dbe0cce3ffce8db8cffad7a16487ef9e3c95021.tar.bz2 |
x86: Enable coreboot timestamp facility support in u-boot.
This change turns on the code which allows u-boot to add
timestamps to the timestamp table created by coreboot.
Since u-boot does not use the tsc_t like structure to represent
HW counter readings, this structure is being replaced by 64 bit
integer.
The timestamp_init() function is now initializing the base timer
value used by u-boot to calculate the HW counter increments.
Timestamp facility is initialized as soon as the timestamp table
pointer is found in the coreboot table. The u-boot generated
timer events' ID will start at 1000 to clearly separate u-boot
events from coreboot events in the timer trace.
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86/include/asm/arch-coreboot/timestamp.h')
-rw-r--r-- | arch/x86/include/asm/arch-coreboot/timestamp.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/x86/include/asm/arch-coreboot/timestamp.h b/arch/x86/include/asm/arch-coreboot/timestamp.h new file mode 100644 index 0000000..e48ad86 --- /dev/null +++ b/arch/x86/include/asm/arch-coreboot/timestamp.h @@ -0,0 +1,51 @@ +/* + * 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 __COREBOOT_TIMESTAMP_H__ +#define __COREBOOT_TIMESTAMP_H__ + +enum timestamp_id { + /* coreboot specific timestamp IDs */ + TS_START_ROMSTAGE = 1, + TS_BEFORE_INITRAM = 2, + TS_AFTER_INITRAM = 3, + TS_END_ROMSTAGE = 4, + TS_START_COPYRAM = 8, + TS_END_COPYRAM = 9, + TS_START_RAMSTAGE = 10, + TS_DEVICE_ENUMERATE = 30, + TS_DEVICE_CONFIGURE = 40, + TS_DEVICE_ENABLE = 50, + TS_DEVICE_INITIALIZE = 60, + TS_DEVICE_DONE = 70, + TS_CBMEM_POST = 75, + TS_WRITE_TABLES = 80, + TS_LOAD_PAYLOAD = 90, + TS_ACPI_WAKE_JUMP = 98, + TS_SELFBOOT_JUMP = 99, + + /* U-Boot entry IDs start at 1000 */ + TS_U_BOOT_INITTED = 1000, /* This is where u-boot starts */ +}; + +void timestamp_init(void); +void timestamp_add(enum timestamp_id id, uint64_t ts_time); +void timestamp_add_now(enum timestamp_id id); + +#endif |