First version

src/include/load_buffer.h

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+#ifndef LOAD_BUFFER_H
+#define LOAD_BUFFER_H
+
+#include "buffer.h"
+
+/*
+ * These functions are architecture-dependent, but the interface must
+ * be identical between architectures.
+ *
+ */
+
+/*
+ * Initialise a buffer suitable for loading an image.  Pass in a
+ * pointer to an uninitialised struct buffer.
+ *
+ * Note that this function may (for example) allocate all remaining
+ * allocatable memory, so it must be called *after* any other code
+ * that might want to allocate memory (e.g. device driver
+ * initialisation).
+ *
+ */
+extern int init_load_buffer ( struct buffer *buffer );
+
+/*
+ * Cut a load buffer down to size once the image has been loaded.
+ * This will shrink the buffer down to the size of the data contained
+ * within the buffer, freeing up unused memory if applicable.
+ *
+ */
+extern void trim_load_buffer ( struct buffer *buffer );
+
+/*
+ * Finish using a load buffer, once the image has been moved into its
+ * target location in memory.
+ *
+ */
+extern void done_load_buffer ( struct buffer *buffer );
+
+#endif /* LOAD_BUFFER_H */