[PATCH edk2-platforms v2 08/18] Hisilicon/D06: Use HCCS speed with 2.6G

[Ming Huang <ming.huang@linaro.org>]

Follow chip team suggestion, HCCS(Huawei Cache-Coherent System)
may be unstable while speed is 3.0G, so use 2.6G to avoid some
unstable stress issue.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ming Huang <ming.huang@linaro.org>
---
 Silicon/Hisilicon/Include/Library/OemMiscLib.h               | 10 ++++++++++
 Platform/Hisilicon/D06/Library/OemMiscLibD06/OemMiscLibD06.c |  8 ++++++++
 2 files changed, 18 insertions(+)

diff --git a/Silicon/Hisilicon/Include/Library/OemMiscLib.h b/Silicon/Hisilicon/Include/Library/OemMiscLib.h
index dfac87d635d9..ea95fe38d75c 100644
--- a/Silicon/Hisilicon/Include/Library/OemMiscLib.h
+++ b/Silicon/Hisilicon/Include/Library/OemMiscLib.h
@@ -22,6 +22,11 @@
 #include <PlatformArch.h>
 #include <Library/I2CLib.h>
 
+#define HCCS_PLL_VALUE_2600  0x52240681
+#define HCCS_PLL_VALUE_2800  0x52240701
+#define HCCS_PLL_VALUE_3000  0x52240781
+
+
 #define PCIEDEVICE_REPORT_MAX      8
 #define MAX_PROCESSOR_SOCKETS      MAX_SOCKET
 #define MAX_MEMORY_CHANNELS        MAX_CHANNEL
@@ -55,4 +60,9 @@ extern EFI_STRING_ID gDimmToDevLocator[MAX_SOCKET][MAX_CHANNEL][MAX_DIMM];
 EFI_HII_HANDLE EFIAPI OemGetPackages ();
 UINTN OemGetCpuFreq (UINT8 Socket);
 
+UINTN
+OemGetHccsFreq (
+  VOID
+  );
+
 #endif
diff --git a/Platform/Hisilicon/D06/Library/OemMiscLibD06/OemMiscLibD06.c b/Platform/Hisilicon/D06/Library/OemMiscLibD06/OemMiscLibD06.c
index 624fa33d2e14..914387de7d63 100644
--- a/Platform/Hisilicon/D06/Library/OemMiscLibD06/OemMiscLibD06.c
+++ b/Platform/Hisilicon/D06/Library/OemMiscLibD06/OemMiscLibD06.c
@@ -223,3 +223,11 @@ UINTN OemGetCpuFreq (UINT8 Socket)
   }
 }
 
+UINTN
+OemGetHccsFreq (
+  VOID
+  )
+{
+  return HCCS_PLL_VALUE_2600;
+}
+
-- 
2.9.5