u-boot-brain/arch/x86/cpu/coreboot
Simon Glass 77dd7c6854 x86: timer: use a timer base of 0
On x86 platforms the timer is reset to 0 when the SoC is reset. Having
this as the timer base is useful since it provides an indication of how
long it takes before U-Boot is running.

When U-Boot sets the timer base to something else, time is lost and we
no-longer have an accurate account of the time since reset. This
particularly affects bootstage.

Change the default to not read the timer base, leaving it at 0. Add an
option for when U-Boot is the secondary bootloader.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-15 11:44:09 +08:00
..
car.S SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
coreboot.c common: Move checkcpu() out of common.h 2019-12-02 18:23:14 -05:00
Kconfig x86: timer: use a timer base of 0 2019-12-15 11:44:09 +08:00
Makefile SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
sdram.c common: Move board_get_usable_ram_top() out of common.h 2019-12-02 18:25:04 -05:00
tables.c x86: coreboot: make it possible to process unhandled tags 2019-05-19 16:17:33 +08:00
timestamp.c SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00