Basic memory support

xtldr2/CMakeLists.txt

@@ -10,6 +10,7 @@ include_directories(
 list(APPEND XTLDR_SOURCE
     ${XTLDR_SOURCE_DIR}/console.c
     ${XTLDR_SOURCE_DIR}/globals.c
+    ${XTLDR_SOURCE_DIR}/memory.c
     ${XTLDR_SOURCE_DIR}/string.c
     ${XTLDR_SOURCE_DIR}/xtldr.c)
 

xtldr2/memory.c

@@ -0,0 +1,92 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/memory.c
+ * DESCRIPTION:     XT Boot Manager EFI memory management
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtbm.h>
+
+
+/**
+ * This routine allocates one or more 4KB pages.
+ *
+ * @param Pages
+ *        The number of contiguous 4KB pages to allocate.
+ *
+ * @param Memory
+ *        The pointer to a physical address.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+BmAllocateEfiPages(IN UINT64 Pages,
+                   OUT PEFI_PHYSICAL_ADDRESS Memory)
+{
+    return EfiSystemTable->BootServices->AllocatePages(AllocateAnyPages, EfiLoaderData, Pages, Memory);
+}
+
+/**
+ * This routine allocates a pool memory.
+ *
+ * @param Size
+ *        The number of bytes to allocate from the pool.
+ *
+ * @param Memory
+ *        The pointer to a physical address.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+BmAllocateEfiPool(IN UINT_PTR Size,
+                  OUT PVOID *Memory)
+{
+    /* Allocate pool */
+    return EfiSystemTable->BootServices->AllocatePool(EfiLoaderData, Size, Memory);
+}
+
+/**
+ * This routine frees memory pages.
+ *
+ * @param Pages
+ *        The number of contiguous 4 KB pages to free.
+ *
+ * @param Memory
+ *        The base physical address of the pages to be freed.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+BmFreeEfiPages(IN UINT64 Pages,
+               IN EFI_PHYSICAL_ADDRESS Memory)
+{
+    return EfiSystemTable->BootServices->FreePages(Memory, Pages);
+}
+
+/**
+ * Returns pool memory to the system.
+ *
+ * @param Memory
+ *        The pointer to the buffer to free.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+BmFreeEfiPool(IN PVOID Memory)
+{
+    /* Free pool */
+    return EfiSystemTable->BootServices->FreePool(Memory);
+}