MIPS: qemu-malta: add PCI support

Qemu emulates the Galileo GT64120 System Controller
which provides a CPU bus to PCI bus bridge.

The patch adds driver for this bridge and enables
PCI support for the emulated Malta board.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>

include/configs/qemu-malta.h

@@ -17,6 +17,10 @@
  */
 #define CONFIG_QEMU_MALTA
 
+#define CONFIG_PCI
+#define CONFIG_PCI_GT64120
+#define CONFIG_PCI_PNP
+
 /*
  * CPU Configuration
  */
@@ -104,6 +108,8 @@
 #undef CONFIG_CMD_NET
 #undef CONFIG_CMD_NFS
 
+#define CONFIG_CMD_PCI
+
 #define CONFIG_SYS_LONGHELP		/* verbose help, undef to save memory */
 
 #endif /* _QEMU_MALTA_CONFIG_H */

include/pci_gt64120.h

@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2013 Gabor Juhos <juhosg@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#ifndef _PCI_GT64120_H
+#define _PCI_GT64120_H
+
+void gt64120_pci_init(void *regs, unsigned long sys_bus, unsigned long sys_phys,
+		     unsigned long sys_size, unsigned long mem_bus,
+		     unsigned long mem_phys, unsigned long mem_size,
+		     unsigned long io_bus, unsigned long io_phys,
+		     unsigned long io_size);
+
+
+#endif /* _PCI_GT64120_H */