UDK2018 eMMC driver may fail to switch eMMC to HS400 mode. This platform
temporary solution limits eMMC controller to maximal HS200 mode.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: David Wei <david....@intel.com>
CC: Mike Wu <mike...@intel.com>
CC: Mang Guo <mang....@intel.com>
---
.../Board/LeafHill/BoardInitPostMem/BoardInit.c | 12 ++++++++++--
.../Board/LeafHill/BoardInitPostMem/BoardInitMiscs.h | 10 +++++++++-
2 files changed, 19 insertions(+), 3 deletions(-)
diff --git
a/Platform/BroxtonPlatformPkg/Board/LeafHill/BoardInitPostMem/BoardInit.c
b/Platform/BroxtonPlatformPkg/Board/LeafHill/BoardInitPostMem/BoardInit.c
index 729b15f966..f0f89f3867 100644
--- a/Platform/BroxtonPlatformPkg/Board/LeafHill/BoardInitPostMem/BoardInit.c
+++ b/Platform/BroxtonPlatformPkg/Board/LeafHill/BoardInitPostMem/BoardInit.c
@@ -1,7 +1,7 @@
/** @file
Board Init driver.
- Copyright (c) 2010 - 2017, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD
License
@@ -60,6 +60,7 @@ LeafHillPostMemInitCallback (
UINT8 ResetType;
UINTN BufferSize;
UINT8 MaxPkgCState;
+ UINT8 MaxSpeed;
UINTN VariableSize;
EFI_PEI_READ_ONLY_VARIABLE2_PPI *VariableServices;
SYSTEM_CONFIGURATION SystemConfiguration;
@@ -135,7 +136,14 @@ LeafHillPostMemInitCallback (
//
// Set PcdeMMCHostMaxSpeed
//
- PcdSet8 (PcdeMMCHostMaxSpeed, (UINT8)
(SystemConfiguration.ScceMMCHostMaxSpeed));
+
+ if ((SystemConfiguration.ScceMMCHostMaxSpeed == 0) ||
(SystemConfiguration.ScceMMCHostMaxSpeed == 1)) {
+ MaxSpeed = EMMC_HS200_MODE;
+ PcdSet8 (PcdeMMCHostMaxSpeed, (UINT8) MaxSpeed);
+ } else {
+ MaxSpeed = EMMC_DDR50_MODE;
+ PcdSet8 (PcdeMMCHostMaxSpeed, (UINT8) MaxSpeed);
+ }
//
// HDA audio verb table
diff --git
a/Platform/BroxtonPlatformPkg/Board/LeafHill/BoardInitPostMem/BoardInitMiscs.h
b/Platform/BroxtonPlatformPkg/Board/LeafHill/BoardInitPostMem/BoardInitMiscs.h
index c1ba128709..da7ccd39ba 100644
---
a/Platform/BroxtonPlatformPkg/Board/LeafHill/BoardInitPostMem/BoardInitMiscs.h
+++
b/Platform/BroxtonPlatformPkg/Board/LeafHill/BoardInitPostMem/BoardInitMiscs.h
@@ -2,7 +2,7 @@
Multiplatform initialization header file.
This file includes package header files, library classes.
- Copyright (c) 2010 - 2016, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD
License
@@ -92,6 +92,14 @@
#define MAX_PKG_CSTATE_C0 0x00
#define MAX_PKG_CSTATE_C1 0x01
#define MAX_PKG_CSTATE_C2 0x02
+
+//
+// eMMCHostMaxSpeed identifier.
+//
+#define EMMC_HS400_MODE 0x00
+#define EMMC_HS200_MODE 0x01
+#define EMMC_DDR50_MODE 0x02
+
EFI_STATUS
LeafHillGetPlatformInfoHob (
IN CONST EFI_PEI_SERVICES **PeiServices,
--
2.14.1.windows.1
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