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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2015 Google, Inc * Written by Simon Glass <sjg@chromium.org> */ #include <common.h> #include <cpu.h> #include <dm.h> #include <errno.h> #include <log.h> #include <dm/lists.h> #include <dm/root.h> #include <linux/err.h> int cpu_probe_all(void) { struct udevice *cpu; int ret; ret = uclass_first_device(UCLASS_CPU, &cpu); if (ret) { debug("%s: No CPU found (err = %d)\n", __func__, ret); return ret; } while (cpu) { ret = uclass_next_device(&cpu); if (ret) { debug("%s: Error while probing CPU (err = %d)\n", __func__, ret); return ret; } } return 0; } 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(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(struct udevice *dev, struct cpu_info *info) { struct cpu_ops *ops = cpu_get_ops(dev); if (!ops->get_info) return -ENOSYS; return ops->get_info(dev, info); } int cpu_get_count(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(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_platdata_auto_alloc_size = sizeof(struct cpu_platdata), }; 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, }; |