u-boot-brain/arch/x86
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
..
cpu x86: timer: use a timer base of 0 2019-12-15 11:44:09 +08:00
dts binman: x86: Separate out 16-bit reset and init code 2019-10-15 08:40:02 -06:00
include/asm x86: spi: Add helper functions for Intel Fast SPI 2019-12-15 11:44:08 +08:00
lib common: Move board_get_usable_ram_top() out of common.h 2019-12-02 18:25:04 -05:00
config.mk x86: efi: app: Generate Microsoft PE format compliant image 2018-12-02 21:59:36 +01:00
Kconfig x86: Drop RESET_SEG_SIZE 2019-10-11 17:37:34 +08:00
Makefile x86: Allow 16-bit init to be in TPL 2019-05-08 13:02:13 +08:00