1 files changed, 61 insertions, 0 deletions
diff --git a/MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHcMem.h b/MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHcMem.h
new file mode 100644
index 0000000000..096b625f98
--- /dev/null
+++ b/MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHcMem.h
@@ -0,0 +1,61 @@
+/** @file
+
+Copyright (c) 2015, 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 which accompanies this distribution.  The
+full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _SD_PEIM_MEM_H_
+#define _SD_PEIM_MEM_H_
+
+#define SD_PEIM_MEM_BIT(a)          ((UINTN)(1 << (a)))
+
+#define SD_PEIM_MEM_BIT_IS_SET(Data, Bit)   \
+          ((BOOLEAN)(((Data) & SD_PEIM_MEM_BIT(Bit)) == SD_PEIM_MEM_BIT(Bit)))
+
+typedef struct _SD_PEIM_MEM_BLOCK SD_PEIM_MEM_BLOCK;
+
+struct _SD_PEIM_MEM_BLOCK {
+  UINT8                   *Bits;    // Bit array to record which unit is allocated
+  UINTN                   BitsLen;
+  UINT8                   *Buf;
+  UINTN                   BufLen;   // Memory size in bytes
+  SD_PEIM_MEM_BLOCK       *Next;
+};
+
+typedef struct _SD_PEIM_MEM_POOL {
+  SD_PEIM_MEM_BLOCK       *Head;
+} SD_PEIM_MEM_POOL;
+
+//
+// Memory allocation unit, note that the value must meet SD spec alignment requirement.
+//
+#define SD_PEIM_MEM_UNIT           128
+
+#define SD_PEIM_MEM_UNIT_MASK      (SD_PEIM_MEM_UNIT - 1)
+#define SD_PEIM_MEM_DEFAULT_PAGES  16
+
+#define SD_PEIM_MEM_ROUND(Len)     (((Len) + SD_PEIM_MEM_UNIT_MASK) & (~SD_PEIM_MEM_UNIT_MASK))
+
+//
+// Advance the byte and bit to the next bit, adjust byte accordingly.
+//
+#define SD_PEIM_NEXT_BIT(Byte, Bit)   \
+          do {                \
+            (Bit)++;          \
+            if ((Bit) > 7) {  \
+              (Byte)++;       \
+              (Bit) = 0;      \
+            }                 \
+          } while (0)
+
+#endif
+