From 77dd7c6854f3bd8ddc422f0cb1953071fe00dc6c Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Fri, 6 Dec 2019 21:41:49 -0700 Subject: 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 Reviewed-by: Bin Meng --- lib/efi/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'lib') diff --git a/lib/efi/Kconfig b/lib/efi/Kconfig index 919e314a0ce..93b85644920 100644 --- a/lib/efi/Kconfig +++ b/lib/efi/Kconfig @@ -1,6 +1,7 @@ config EFI bool "Support running U-Boot from EFI" depends on X86 + imply X86_TSC_READ_BASE help U-Boot can be started from EFI on certain platforms. This allows EFI to perform most of the system init and then jump to U-Boot for -- cgit v1.3.1