rockchip: Add core SoC start-up code

Add code for starting up U-Boot SPL and U-Boot proper. This is generic and
makes use of devices provided by the board- or SoC-specific code.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/arch/arm/mach-rockchip/common.c b/arch/arm/mach-rockchip/common.c
new file mode 100644
index 00000000000..fc7ac726cc8
--- /dev/null
+++ b/arch/arm/mach-rockchip/common.c
@@ -0,0 +1,28 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <fdtdec.h>
+#include <linux/err.h>
+
+void *rockchip_get_cru(void)
+{
+	struct udevice *dev;
+	fdt_addr_t addr;
+	int ret;
+
+	ret = uclass_get_device(UCLASS_CLK, 0, &dev);
+	if (ret)
+		return ERR_PTR(ret);
+
+	addr = dev_get_addr(dev);
+	if (addr == FDT_ADDR_T_NONE)
+		return ERR_PTR(-EINVAL);
+
+	return (void *)addr;
+}