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 int cpu_get_count(struct udevice *dev) 36 { 37 struct cpu_ops *ops = cpu_get_ops(dev); 38 39 if (!ops->get_count) 40 return -ENOSYS; 41 42 return ops->get_count(dev); 43 } 44 45 U_BOOT_DRIVER(cpu_bus) = { 46 .name = "cpu_bus", 47 .id = UCLASS_SIMPLE_BUS, 48 .per_child_platdata_auto_alloc_size = sizeof(struct cpu_platdata), 49 }; 50 51 static int uclass_cpu_init(struct uclass *uc) 52 { 53 struct udevice *dev; 54 int node; 55 int ret; 56 57 node = fdt_path_offset(gd->fdt_blob, "/cpus"); 58 if (node < 0) 59 return 0; 60 61 ret = device_bind_driver_to_node(dm_root(), "cpu_bus", "cpus", node, 62 &dev); 63 64 return ret; 65 } 66 67 UCLASS_DRIVER(cpu) = { 68 .id = UCLASS_CPU, 69 .name = "cpu", 70 .flags = DM_UC_FLAG_SEQ_ALIAS, 71 .init = uclass_cpu_init, 72 }; 73