diff mbox

[U-Boot,03/15] x86: Add some notes for MRC cache with Intel FSP

Message ID 1463906739-934-4-git-send-email-bmeng.cn@gmail.com
State Accepted
Commit 5c60a3abde29844f27c227adda1be088ea80e7dd
Delegated to: Bin Meng
Headers show

Commit Message

Bin Meng May 22, 2016, 8:45 a.m. UTC
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>
---

 arch/x86/Kconfig | 7 +++++++
 1 file changed, 7 insertions(+)

Comments

Simon Glass May 23, 2016, 12:19 a.m. UTC | #1
On 22 May 2016 at 02:45, Bin Meng <bmeng.cn@gmail.com> wrote:
> 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>
> ---
>
>  arch/x86/Kconfig | 7 +++++++
>  1 file changed, 7 insertions(+)

Reviewed-by: Simon Glass <sjg@chromium.org>
Bin Meng May 23, 2016, 8:19 a.m. UTC | #2
On Mon, May 23, 2016 at 8:19 AM, Simon Glass <sjg@chromium.org> wrote:
> On 22 May 2016 at 02:45, Bin Meng <bmeng.cn@gmail.com> wrote:
>> 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>
>> ---
>>
>>  arch/x86/Kconfig | 7 +++++++
>>  1 file changed, 7 insertions(+)
>
> Reviewed-by: Simon Glass <sjg@chromium.org>

applied to u-boot-x86, thanks!
diff mbox

Patch

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index d304e29..c57b99d 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -271,6 +271,13 @@  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