Make the getmemsize() prototype available in memsizes.h, for code that

doesn't want to go to the hassle of processing a full memory map.

src/arch/i386/firmware/pcbios/memmap.c

 #include <errno.h>
 #include <realmode.h>
 #include <bios.h>
+#include <memsizes.h>
 #include <gpxe/memmap.h>
 
 /**
 static struct e820_entry __data16 ( e820buf );
 #define e820buf __use_data16 ( e820buf )
 
-/**
- * Get size of base memory from BIOS free base memory counter
- *
- * @ret basemem		Base memory size, in kB
- */
-static unsigned int basememsize ( void ) {
-	uint16_t basemem;
-
-	get_real ( basemem, BDA_SEG, 0x0013 );
-	DBG ( "Base memory size %dkB\n", basemem );
-	return basemem;
-}
-
 /**
  * Get size of extended memory via INT 15,e801
  *
  * Get size of extended memory
  *
  * @ret extmem		Extended memory size, in kB
+ *
+ * Note that this is only an approximation; for an accurate picture,
+ * use the E820 memory map obtained via get_memmap();
  */
-static unsigned int extmemsize ( void ) {
+unsigned int extmemsize ( void ) {
 	unsigned int extmem;
 
 	/* Try INT 15,e801 first, then fall back to INT 15,88 */

src/arch/i386/image/nbi.c

 #include <assert.h>
 #include <realmode.h>
 #include <gateA20.h>
+#include <memsizes.h>
 #include <gpxe/uaccess.h>
 #include <gpxe/segment.h>
 #include <gpxe/image.h>

src/arch/i386/include/memsizes.h

-#ifndef MEMSIZES_H
-#define MEMSIZES_H
+#ifndef _MEMSIZES_H
+#define _MEMSIZES_H
 
-#warning "This header is no longer functional; use memmap.h instead"
+#include <basemem.h>
 
-/*
- * These structures seem to be very i386 (and, in fact, PCBIOS)
- * specific, so I've moved them out of etherboot.h.
+/**
+ * Get size of base memory from BIOS free base memory counter
  *
+ * @ret basemem		Base memory size, in kB
  */
+static inline unsigned int basememsize ( void ) {
+	return get_fbms();
+}
 
-struct e820entry {
-	uint64_t addr;
-	uint64_t size;
-	uint32_t type;
-#define E820_RAM	1
-#define E820_RESERVED	2
-#define E820_ACPI	3 /* usable as RAM once ACPI tables have been read */
-#define E820_NVS	4
-} __attribute__ (( packed ));
-#define E820ENTRY_SIZE 20
-#define E820MAX 32
+extern unsigned int extmemsize ( void );
 
-struct meminfo {
-	uint16_t basememsize;
-	uint16_t pad;
-	uint32_t memsize;
-	uint32_t map_count;
-	struct e820entry map[E820MAX];
-} __attribute__ (( packed ));
-
-extern struct meminfo meminfo;
-
-extern void get_memsizes ( void );
-
-#endif /* MEMSIZES_H */
+#endif /* _MEMSIZES_H */