u-boot/arch/x86/cpu/slimbootloader
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 x86: Add new slimbootloader CPU type 2019-08-09 22:24:02 +08:00
Kconfig x86: timer: use a timer base of 0 2019-12-15 11:44:09 +08:00
Makefile x86: slimbootloader: Add serial driver 2019-08-09 22:24:02 +08:00
sdram.c common: Move board_get_usable_ram_top() out of common.h 2019-12-02 18:25:04 -05:00
serial.c x86: slimbootloader: Add serial driver 2019-08-09 22:24:02 +08:00
slimbootloader.c common: Move checkcpu() out of common.h 2019-12-02 18:23:14 -05:00