1 /* 2 * Copyright (C) 2015 Google, Inc 3 * Written by Simon Glass <sjg@chromium.org> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <cpu.h> 10 #include <dm.h> 11 #include <errno.h> 12 #include <dm/lists.h> 13 #include <dm/root.h> 14 15 int cpu_get_desc(struct udevice *dev, char *buf, int size) 16 { 17 struct cpu_ops *ops = cpu_get_ops(dev); 18 19 if (!ops->get_desc) 20 return -ENOSYS; 21 22 return ops->get_desc(dev, buf, size); 23 } 24 25 int cpu_get_info(struct udevice *dev, struct cpu_info *info) 26 { 27 struct cpu_ops *ops = cpu_get_ops(dev); 28 29 if (!ops->get_info) 30 return -ENOSYS; 31 32 return ops->get_info(dev, info); 33 } 34 35 U_BOOT_DRIVER(cpu_bus) = { 36 .name = "cpu_bus", 37 .id = UCLASS_SIMPLE_BUS, 38 .per_child_platdata_auto_alloc_size = sizeof(struct cpu_platdata), 39 }; 40 41 static int uclass_cpu_init(struct uclass *uc) 42 { 43 struct udevice *dev; 44 int node; 45 int ret; 46 47 node = fdt_path_offset(gd->fdt_blob, "/cpus"); 48 if (node < 0) 49 return 0; 50 51 ret = device_bind_driver_to_node(dm_root(), "cpu_bus", "cpus", node, 52 &dev); 53 54 return ret; 55 } 56 57 UCLASS_DRIVER(cpu) = { 58 .id = UCLASS_CPU, 59 .name = "cpu", 60 .flags = DM_UC_FLAG_SEQ_ALIAS, 61 .init = uclass_cpu_init, 62 }; 63