1 files changed, 69 insertions, 0 deletions
diff --git a/src/mainboard/emulation/qemu-i440fx/memmap.c b/src/mainboard/emulation/qemu-i440fx/memmap.c
new file mode 100644
index 0000000000..8209379bef
--- /dev/null
+++ b/src/mainboard/emulation/qemu-i440fx/memmap.c
@@ -0,0 +1,69 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2004 Stefan Reinauer <stefan.reinauer@coreboot.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <cbmem.h>
+#include <arch/io.h>
+#include <arch/romstage.h>
+#include "memory.h"
+#include "fw_cfg.h"
+
+#define CMOS_ADDR_PORT 0x70
+#define CMOS_DATA_PORT 0x71
+
+#define HIGH_RAM_ADDR 0x35
+#define LOW_RAM_ADDR 0x34
+
+#define HIGH_HIGHRAM_ADDR 0x5d
+#define MID_HIGHRAM_ADDR 0x5c
+#define LOW_HIGHRAM_ADDR 0x5b
+
+unsigned long qemu_get_high_memory_size(void)
+{
+	unsigned long high;
+	outb(HIGH_HIGHRAM_ADDR, CMOS_ADDR_PORT);
+	high = ((unsigned long) inb(CMOS_DATA_PORT)) << 22;
+	outb(MID_HIGHRAM_ADDR, CMOS_ADDR_PORT);
+	high |= ((unsigned long) inb(CMOS_DATA_PORT)) << 14;
+	outb(LOW_HIGHRAM_ADDR, CMOS_ADDR_PORT);
+	high |= ((unsigned long) inb(CMOS_DATA_PORT)) << 6;
+	return high;
+}
+
+unsigned long qemu_get_memory_size(void)
+{
+	unsigned long tomk;
+	outb(HIGH_RAM_ADDR, CMOS_ADDR_PORT);
+	tomk = ((unsigned long) inb(CMOS_DATA_PORT)) << 14;
+	outb(LOW_RAM_ADDR, CMOS_ADDR_PORT);
+	tomk |= ((unsigned long) inb(CMOS_DATA_PORT)) << 6;
+	tomk += 16 * 1024;
+	return tomk;
+}
+
+void *cbmem_top(void)
+{
+	uintptr_t top = 0;
+
+	top = fw_cfg_tolud();
+	if (!top)
+		top = (uintptr_t)qemu_get_memory_size() * 1024;
+
+	return (void *)top;
+}
+
+/* Nothing to do, MTRRs are no-op on QEMU. */
+void fill_postcar_frame(struct postcar_frame *pcf)
+{
+}