PPC: e500: add generic e500 platform

This gives the kernel a paravirtualized machine to target, without
requiring both sides to pretend to be targeting a specific board
that likely has little to do with the host in KVM scenarios.  This
avoids the need to add new boards to QEMU, just to be able to
run KVM on new CPUs.

Signed-off-by: Scott Wood <scottwood@freescale.com>
[agraf: conditionalize on CONFIG_FDT]
Signed-off-by: Alexander Graf <agraf@suse.de>

hw/ppc/Makefile.objs

@@ -27,4 +27,4 @@ obj-y += xilinx_ethlite.o
 
 obj-y := $(addprefix ../,$(obj-y))
 
-obj-$(CONFIG_FDT) += e500.o mpc8544ds.o
+obj-$(CONFIG_FDT) += e500.o mpc8544ds.o e500plat.o

hw/ppc/e500plat.c

@@ -0,0 +1,60 @@
+/*
+ * Generic device-tree-driven paravirt PPC e500 platform
+ *
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * This 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;  either version 2 of the  License, or
+ * (at your option) any later version.
+ */
+
+#include "config.h"
+#include "qemu-common.h"
+#include "e500.h"
+#include "../boards.h"
+#include "device_tree.h"
+
+static void e500plat_fixup_devtree(PPCE500Params *params, void *fdt)
+{
+    const char model[] = "QEMU ppce500";
+    const char compatible[] = "fsl,qemu-e500";
+
+    qemu_devtree_setprop(fdt, "/", "model", model, sizeof(model));
+    qemu_devtree_setprop(fdt, "/", "compatible", compatible,
+                         sizeof(compatible));
+}
+
+static void e500plat_init(ram_addr_t ram_size,
+                           const char *boot_device,
+                           const char *kernel_filename,
+                           const char *kernel_cmdline,
+                           const char *initrd_filename,
+                           const char *cpu_model)
+{
+    PPCE500Params params = {
+        .ram_size = ram_size,
+        .boot_device = boot_device,
+        .kernel_filename = kernel_filename,
+        .kernel_cmdline = kernel_cmdline,
+        .initrd_filename = initrd_filename,
+        .cpu_model = cpu_model,
+        .fixup_devtree = e500plat_fixup_devtree,
+    };
+
+    ppce500_init(&params);
+}
+
+static QEMUMachine e500plat_machine = {
+    .name = "ppce500",
+    .desc = "generic paravirt e500 platform",
+    .init = e500plat_init,
+    .max_cpus = 15,
+};
+
+static void e500plat_machine_init(void)
+{
+    qemu_register_machine(&e500plat_machine);
+}
+
+machine_init(e500plat_machine_init);