mirror of
https://github.com/brain-hackers/u-boot-brain
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41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
143 lines
2.5 KiB
C
143 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <cpu.h>
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#include <dm.h>
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#include <errno.h>
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#include <log.h>
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#include <dm/lists.h>
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#include <dm/root.h>
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#include <linux/err.h>
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int cpu_probe_all(void)
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{
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struct udevice *cpu;
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int ret;
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ret = uclass_first_device(UCLASS_CPU, &cpu);
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if (ret) {
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debug("%s: No CPU found (err = %d)\n", __func__, ret);
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return ret;
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}
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while (cpu) {
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ret = uclass_next_device(&cpu);
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if (ret) {
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debug("%s: Error while probing CPU (err = %d)\n",
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__func__, ret);
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return ret;
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}
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}
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return 0;
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}
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int cpu_is_current(struct udevice *cpu)
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{
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struct cpu_ops *ops = cpu_get_ops(cpu);
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if (ops->is_current) {
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if (ops->is_current(cpu))
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return 1;
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}
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return -ENOSYS;
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}
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struct udevice *cpu_get_current_dev(void)
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{
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struct udevice *cpu;
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int ret;
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uclass_foreach_dev_probe(UCLASS_CPU, cpu) {
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if (cpu_is_current(cpu) > 0)
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return cpu;
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}
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/* If can't find current cpu device, use the first dev instead */
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ret = uclass_first_device_err(UCLASS_CPU, &cpu);
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if (ret) {
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debug("%s: Could not get CPU device (err = %d)\n",
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__func__, ret);
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return NULL;
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}
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return cpu;
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}
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int cpu_get_desc(const struct udevice *dev, char *buf, int size)
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{
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struct cpu_ops *ops = cpu_get_ops(dev);
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if (!ops->get_desc)
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return -ENOSYS;
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return ops->get_desc(dev, buf, size);
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}
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int cpu_get_info(const struct udevice *dev, struct cpu_info *info)
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{
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struct cpu_ops *ops = cpu_get_ops(dev);
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if (!ops->get_info)
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return -ENOSYS;
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/* Init cpu_info to 0 */
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memset(info, 0, sizeof(struct cpu_info));
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return ops->get_info(dev, info);
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}
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int cpu_get_count(const struct udevice *dev)
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{
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struct cpu_ops *ops = cpu_get_ops(dev);
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if (!ops->get_count)
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return -ENOSYS;
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return ops->get_count(dev);
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}
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int cpu_get_vendor(const struct udevice *dev, char *buf, int size)
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{
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struct cpu_ops *ops = cpu_get_ops(dev);
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if (!ops->get_vendor)
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return -ENOSYS;
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return ops->get_vendor(dev, buf, size);
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}
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U_BOOT_DRIVER(cpu_bus) = {
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.name = "cpu_bus",
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.id = UCLASS_SIMPLE_BUS,
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.per_child_platdata_auto = sizeof(struct cpu_platdata),
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};
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static int uclass_cpu_init(struct uclass *uc)
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{
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struct udevice *dev;
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ofnode node;
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int ret;
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node = ofnode_path("/cpus");
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if (!ofnode_valid(node))
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return 0;
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ret = device_bind_driver_to_node(dm_root(), "cpu_bus", "cpus", node,
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&dev);
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return ret;
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}
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UCLASS_DRIVER(cpu) = {
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.id = UCLASS_CPU,
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.name = "cpu",
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.flags = DM_UC_FLAG_SEQ_ALIAS,
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.init = uclass_cpu_init,
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};
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