1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/cpu/cpu-uclass.c b/drivers/cpu/cpu-uclass.c
new file mode 100644
index 00000000000..16f8f2e5219
--- /dev/null
+++ b/drivers/cpu/cpu-uclass.c
@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#define LOG_CATEGORY UCLASS_CPU
+
+#include <cpu.h>
+#include <dm.h>
+#include <errno.h>
+#include <log.h>
+#include <dm/lists.h>
+#include <dm/root.h>
+#include <linux/err.h>
+#include <relocate.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int cpu_probe_all(void)
+{
+	int ret = uclass_probe_all(UCLASS_CPU);
+
+	if (ret) {
+		debug("%s: Error while probing CPUs (err = %d %s)\n",
+		      __func__, ret, errno_str(ret));
+	}
+	return ret;
+}
+
+int cpu_is_current(struct udevice *cpu)
+{
+	struct cpu_ops *ops = cpu_get_ops(cpu);
+
+	if (ops->is_current) {
+		if (ops->is_current(cpu))
+			return 1;
+	}
+
+	return -ENOSYS;
+}
+
+struct udevice *cpu_get_current_dev(void)
+{
+	struct udevice *cpu;
+	int ret;
+
+	uclass_foreach_dev_probe(UCLASS_CPU, cpu) {
+		if (cpu_is_current(cpu) > 0)
+			return cpu;
+	}
+
+	/* If can't find current cpu device, use the first dev instead */
+	ret = uclass_first_device_err(UCLASS_CPU, &cpu);
+	if (ret) {
+		debug("%s: Could not get CPU device (err = %d)\n",
+		      __func__, ret);
+		return NULL;
+	}
+
+	return cpu;
+}
+
+int cpu_get_desc(const struct udevice *dev, char *buf, int size)
+{
+	struct cpu_ops *ops = cpu_get_ops(dev);
+
+	if (!ops->get_desc)
+		return -ENOSYS;
+
+	return ops->get_desc(dev, buf, size);
+}
+
+int cpu_get_info(const struct udevice *dev, struct cpu_info *info)
+{
+	struct cpu_ops *ops = cpu_get_ops(dev);
+
+	if (!ops->get_info)
+		return -ENOSYS;
+
+	/* Init cpu_info to 0 */
+	memset(info, 0, sizeof(struct cpu_info));
+
+	return ops->get_info(dev, info);
+}
+
+int cpu_get_count(const struct udevice *dev)
+{
+	struct cpu_ops *ops = cpu_get_ops(dev);
+
+	if (!ops->get_count)
+		return -ENOSYS;
+
+	return ops->get_count(dev);
+}
+
+int cpu_get_vendor(const struct udevice *dev, char *buf, int size)
+{
+	struct cpu_ops *ops = cpu_get_ops(dev);
+
+	if (!ops->get_vendor)
+		return -ENOSYS;
+
+	return ops->get_vendor(dev, buf, size);
+}
+
+U_BOOT_DRIVER(cpu_bus) = {
+	.name	= "cpu_bus",
+	.id	= UCLASS_SIMPLE_BUS,
+	.per_child_plat_auto	= sizeof(struct cpu_plat),
+};
+
+static int uclass_cpu_init(struct uclass *uc)
+{
+	struct udevice *dev;
+	ofnode node;
+	int ret;
+
+	node = ofnode_path("/cpus");
+	if (!ofnode_valid(node))
+		return 0;
+
+	ret = device_bind_driver_to_node(dm_root(), "cpu_bus", "cpus", node,
+					 &dev);
+
+	return ret;
+}
+
+UCLASS_DRIVER(cpu) = {
+	.id		= UCLASS_CPU,
+	.name		= "cpu",
+	.flags		= DM_UC_FLAG_SEQ_ALIAS,
+	.init		= uclass_cpu_init,
+};