[BOOT:LIB] Refactor bootlib.c

InitializeLibary() now saves parameters data in
BlpApplicationParameters, BlpApplicationEntry, and BlpBootDevice.
Moved BlGetBootOptionSize() and BlGetBootOptionListSize() to bootopt.c

BOOT/ENVIRON/LIB/bootopt.c

@@ -0,0 +1,89 @@
+/*++
+
+Copyright (c) 2024, Quinn Stephens.
+Provided under the BSD 3-Clause license.
+
+Module Name:
+
+   bootopt.c
+
+Abstract:
+
+   Provides boot option utilities.
+
+--*/
+
+#include "bootlib.h"
+
+ULONG
+BlGetBootOptionSize (
+    IN PBOOT_APPLICATION_OPTION Option
+    )
+
+/*++
+
+Routine Description:
+
+    Gets the size of a boot option.
+
+Arguments:
+
+    Option - the boot option to get the size of.
+
+Return Value:
+
+    The size of the option.
+
+--*/
+
+{
+    ULONG TotalSize;
+
+    if (Option->DataOffset != 0) {
+        TotalSize = Option->DataOffset + Option->DataSize;
+    } else {
+        TotalSize = sizeof(BOOT_APPLICATION_OPTION);
+    }
+
+    if (Option->OtherOptionsOffset != 0) {
+        TotalSize += BlGetBootOptionListSize((PBOOT_APPLICATION_OPTION)((PUCHAR)Option + Option->OtherOptionsOffset));
+    }
+
+    return TotalSize;
+}
+
+ULONG
+BlGetBootOptionListSize (
+    IN PBOOT_APPLICATION_OPTION Options
+    )
+
+/*++
+
+Routine Description:
+
+    Gets the total size of a list boot options.
+
+Arguments:
+
+    Options - the boot option list to get the size of.
+
+Return Value:
+
+    The size of the options.
+
+--*/
+
+{
+    ULONG TotalSize, NextOffset;
+    PBOOT_APPLICATION_OPTION Option;
+
+    TotalSize = 0;
+    NextOffset = 0;
+    do {
+        Option = (PBOOT_APPLICATION_OPTION)((PUCHAR)Options + NextOffset);
+        NextOffset = Option->NextOptionOffset;
+        TotalSize += BlGetBootOptionSize(Option);
+    } while (NextOffset != 0);
+
+    return TotalSize;
+}