1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2015 Google, Inc 4 * Written by Simon Glass <sjg@chromium.org> 5 */ 6 7 #include <common.h> 8 #include <cpu.h> 9 #include <dm.h> 10 #include <errno.h> 11 #include <dm/lists.h> 12 #include <dm/root.h> 13 14 int cpu_get_desc(struct udevice *dev, char *buf, int size) 15 { 16 struct cpu_ops *ops = cpu_get_ops(dev); 17 18 if (!ops->get_desc) 19 return -ENOSYS; 20 21 return ops->get_desc(dev, buf, size); 22 } 23 24 int cpu_get_info(struct udevice *dev, struct cpu_info *info) 25 { 26 struct cpu_ops *ops = cpu_get_ops(dev); 27 28 if (!ops->get_info) 29 return -ENOSYS; 30 31 return ops->get_info(dev, info); 32 } 33 34 int cpu_get_count(struct udevice *dev) 35 { 36 struct cpu_ops *ops = cpu_get_ops(dev); 37 38 if (!ops->get_count) 39 return -ENOSYS; 40 41 return ops->get_count(dev); 42 } 43 44 int cpu_get_vendor(struct udevice *dev, char *buf, int size) 45 { 46 struct cpu_ops *ops = cpu_get_ops(dev); 47 48 if (!ops->get_vendor) 49 return -ENOSYS; 50 51 return ops->get_vendor(dev, buf, size); 52 } 53 54 U_BOOT_DRIVER(cpu_bus) = { 55 .name = "cpu_bus", 56 .id = UCLASS_SIMPLE_BUS, 57 .per_child_platdata_auto_alloc_size = sizeof(struct cpu_platdata), 58 }; 59 60 static int uclass_cpu_init(struct uclass *uc) 61 { 62 struct udevice *dev; 63 ofnode node; 64 int ret; 65 66 node = ofnode_path("/cpus"); 67 if (!ofnode_valid(node)) 68 return 0; 69 70 ret = device_bind_driver_to_node(dm_root(), "cpu_bus", "cpus", node, 71 &dev); 72 73 return ret; 74 } 75 76 UCLASS_DRIVER(cpu) = { 77 .id = UCLASS_CPU, 78 .name = "cpu", 79 .flags = DM_UC_FLAG_SEQ_ALIAS, 80 .init = uclass_cpu_init, 81 }; 82