qemu: add q35 support

Add support for the new q35 chipset emulation
added in qemu 1.4.

Change-Id: Iabfaa1310dc7b54c9d224635addebdfafe1fbfaf
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-on: http://review.coreboot.org/3430
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/mainboard/emulation/qemu-q35/romstage.c b/src/mainboard/emulation/qemu-q35/romstage.c
new file mode 100644
index 0000000..2606099
--- /dev/null
+++ b/src/mainboard/emulation/qemu-q35/romstage.c
@@ -0,0 +1,63 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2004 Stefan Reinauer
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+#include <device/pci_def.h>
+#include <device/pci_ids.h>
+#include <arch/io.h>
+#include <device/pnp_def.h>
+#include <arch/hlt.h>
+#include <pc80/mc146818rtc.h>
+#include <console/console.h>
+#include <southbridge/intel/i82801ix/i82801ix.h>
+#include <cpu/x86/bist.h>
+#include <timestamp.h>
+#include "drivers/pc80/udelay_io.c"
+#include "lib/delay.c"
+#include "cpu/x86/lapic/boot_cpu.c"
+
+#include "../qemu-i440fx/memory.c"
+
+void main(unsigned long bist)
+{
+	int cbmem_was_initted;
+
+	/* init_timer(); */
+	post_code(0x05);
+
+	i82801ix_early_init();
+	console_init();
+
+	/* Halt if there was a built in self test failure */
+	report_bist_failure(bist);
+
+	//print_pci_devices();
+	//dump_pci_devices();
+
+	cbmem_was_initted = !cbmem_initialize();
+#if CONFIG_COLLECT_TIMESTAMPS
+	timestamp_init(rdtsc());
+	timestamp_add_now(TS_START_ROMSTAGE);
+#endif
+#if CONFIG_CONSOLE_CBMEM
+	/* Keep this the last thing this function does. */
+	cbmemc_reinit();
+#endif
+
+}