From: Bin Meng Date: Sun, 22 May 2016 08:45:27 +0000 (-0700) Subject: x86: Add some notes for MRC cache with Intel FSP X-Git-Tag: v2016.07-rc1~177^2~12 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=5c60a3abde29844f27c227adda1be088ea80e7dd;p=oweals%2Fu-boot.git x86: Add some notes for MRC cache with Intel FSP MRC cache relies on Intel FSP to produce a special GUID that contains the MRC cache data. Add such information in the CONFIG_ENABLE_MRC_CACHE help entry. Signed-off-by: Bin Meng Reviewed-by: Simon Glass --- diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 2ba36b790c..65cbb9cc66 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -274,6 +274,13 @@ config ENABLE_MRC_CACHE to be used for speeding up boot time on future reboots and/or power cycles. + For platforms that use Intel FSP for the memory initialization, + please check FSP output HOB via U-Boot command 'fsp hob' to see + if there is FSP_NON_VOLATILE_STORAGE_HOB_GUID (asm/fsp/fsp_hob.h). + If such GUID does not exist, MRC cache is not avaiable on such + platform (eg: Intel Queensbay), which means selecting this option + here does not make any difference. + config HAVE_MRC bool "Add a System Agent binary" depends on !HAVE_FSP