1 files changed, 61 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/microwatt/setup.c b/arch/powerpc/platforms/microwatt/setup.c
new file mode 100644
index 000000000000..6af2ccef736c
--- /dev/null
+++ b/arch/powerpc/platforms/microwatt/setup.c
@@ -0,0 +1,61 @@
+/*
+ * Microwatt FPGA-based SoC platform setup code.
+ *
+ * Copyright 2020 Paul Mackerras (paulus@ozlabs.org), IBM Corp.
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/stddef.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/time.h>
+#include <asm/xics.h>
+#include <asm/udbg.h>
+
+#include "microwatt.h"
+
+static void __init microwatt_init_IRQ(void)
+{
+	xics_init();
+}
+
+static int __init microwatt_populate(void)
+{
+	return of_platform_default_populate(NULL, NULL, NULL);
+}
+machine_arch_initcall(microwatt, microwatt_populate);
+
+static int __init microwatt_probe(void)
+{
+	/* Main reason for having this is to start the other CPU(s) */
+	if (IS_ENABLED(CONFIG_SMP))
+		microwatt_init_smp();
+	return 1;
+}
+
+static void __init microwatt_setup_arch(void)
+{
+	microwatt_rng_init();
+}
+
+static void microwatt_idle(void)
+{
+	if (!prep_irq_for_idle_irqsoff())
+		return;
+
+	__asm__ __volatile__ ("wait");
+}
+
+define_machine(microwatt) {
+	.name			= "microwatt",
+	.compatible		= "microwatt-soc",
+	.probe			= microwatt_probe,
+	.init_IRQ		= microwatt_init_IRQ,
+	.setup_arch		= microwatt_setup_arch,
+	.progress		= udbg_progress,
+	.power_save		= microwatt_idle,
+};