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authorBin Meng <bmeng.cn@gmail.com>2016-05-22 01:45:27 -0700
committerBin Meng <bmeng.cn@gmail.com>2016-05-23 15:18:00 +0800
commit5c60a3abde29844f27c227adda1be088ea80e7dd (patch)
treea2c8b0d42254718c151dcf9aa9c0379368a0ec7e /arch/x86/Kconfig
parent2baf3a5584b5bea0f433d3cc6e217066b88e69ed (diff)
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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 <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86/Kconfig')
-rw-r--r--arch/x86/Kconfig7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 2ba36b7..65cbb9c 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