1 files changed, 113 insertions, 0 deletions
diff --git a/arch/sh/boards/of-generic.c b/arch/sh/boards/of-generic.c
new file mode 100644
index 000000000000..71d890932151
--- /dev/null
+++ b/arch/sh/boards/of-generic.c
@@ -0,0 +1,113 @@
+/*
+ * SH generic board support, using device tree
+ *
+ * Copyright (C) 2015-2016 Smart Energy Instruments, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/of_fdt.h>
+#include <linux/of_iommu.h>
+#include <linux/clocksource.h>
+#include <linux/irqchip.h>
+#include <linux/clk-provider.h>
+#include <asm/machvec.h>
+#include <asm/rtc.h>
+
+static void noop(void)
+{
+}
+
+static int noopi(void)
+{
+	return 0;
+}
+
+static void __init sh_of_mem_reserve(void)
+{
+	early_init_fdt_reserve_self();
+	early_init_fdt_scan_reserved_mem();
+}
+
+static void __init sh_of_time_init(void)
+{
+	pr_info("SH generic board support: scanning for clocksource devices\n");
+	clocksource_probe();
+}
+
+static void __init sh_of_setup(char **cmdline_p)
+{
+	unflatten_device_tree();
+
+	board_time_init = sh_of_time_init;
+
+	sh_mv.mv_name = of_flat_dt_get_machine_name();
+	if (!sh_mv.mv_name)
+		sh_mv.mv_name = "Unknown SH model";
+
+	/* FIXME: register smp ops to use dt to find cpus, use
+	 * cpu enable-method, and use irq controller's ipi
+	 * functions. */
+}
+
+static int sh_of_irq_demux(int irq)
+{
+	/* FIXME: eventually this should not be used at all;
+	 * the interrupt controller should set_handle_irq(). */
+	return irq;
+}
+
+static void __init sh_of_init_irq(void)
+{
+	pr_info("SH generic board support: scanning for interrupt controllers\n");
+	irqchip_init();
+}
+
+static int __init sh_of_clk_init(void)
+{
+#ifdef CONFIG_COMMON_CLK
+	/* Disabled pending move to COMMON_CLK framework. */
+	pr_info("SH generic board support: scanning for clk providers\n");
+	of_clk_init(NULL);
+#endif
+	return 0;
+}
+
+static struct sh_machine_vector __initmv sh_of_generic_mv = {
+	.mv_setup	= sh_of_setup,
+	.mv_name	= "devicetree", /* replaced by DT root's model */
+	.mv_irq_demux	= sh_of_irq_demux,
+	.mv_init_irq	= sh_of_init_irq,
+	.mv_clk_init	= sh_of_clk_init,
+	.mv_mode_pins	= noopi,
+	.mv_mem_init	= noop,
+	.mv_mem_reserve	= sh_of_mem_reserve,
+};
+
+struct sh_clk_ops;
+
+void __init arch_init_clk_ops(struct sh_clk_ops **ops, int idx)
+{
+}
+
+void __init plat_irq_setup(void)
+{
+}
+
+static int __init sh_of_device_init(void)
+{
+	pr_info("SH generic board support: populating platform devices\n");
+	if (of_have_populated_dt()) {
+		of_iommu_init();
+		of_platform_populate(NULL, of_default_bus_match_table,
+				     NULL, NULL);
+	} else {
+		pr_crit("Device tree not populated\n");
+	}
+	return 0;
+}
+arch_initcall_sync(sh_of_device_init);