mirror of
https://github.com/AsahiLinux/u-boot
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1e94b46f73
This old patch was marked as deferred. Bring it back to life, to continue towards the removal of common.h Move this out of the common header and include it only where needed. Signed-off-by: Simon Glass <sjg@chromium.org>
97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2018 Theobroma Systems Design und Consulting GmbH
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*/
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#define LOG_CATEGORY UCLASS_BOOTCOUNT
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <bootcount.h>
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#include <log.h>
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#include <linux/printk.h>
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int dm_bootcount_get(struct udevice *dev, u32 *bootcount)
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{
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struct bootcount_ops *ops = bootcount_get_ops(dev);
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assert(ops);
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if (!ops->get)
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return -ENOSYS;
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return ops->get(dev, bootcount);
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}
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int dm_bootcount_set(struct udevice *dev, const u32 bootcount)
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{
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struct bootcount_ops *ops = bootcount_get_ops(dev);
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assert(ops);
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if (!ops->set)
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return -ENOSYS;
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return ops->set(dev, bootcount);
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}
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/* Now implement the generic default functions */
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void bootcount_store(ulong val)
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{
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struct udevice *dev = NULL;
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ofnode node;
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const char *propname = "u-boot,bootcount-device";
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int ret = -ENODEV;
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/*
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* If there's a preferred bootcount device selected by the user (by
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* setting '/chosen/u-boot,bootcount-device' in the DTS), try to use
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* it if available.
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*/
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node = ofnode_get_chosen_node(propname);
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if (ofnode_valid(node))
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ret = uclass_get_device_by_ofnode(UCLASS_BOOTCOUNT, node, &dev);
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/* If there was no user-selected device, use the first available one */
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if (ret)
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ret = uclass_get_device(UCLASS_BOOTCOUNT, 0, &dev);
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if (dev)
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ret = dm_bootcount_set(dev, val);
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if (ret)
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pr_debug("%s: failed to store 0x%lx\n", __func__, val);
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}
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ulong bootcount_load(void)
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{
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struct udevice *dev = NULL;
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ofnode node;
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const char *propname = "u-boot,bootcount-device";
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int ret = -ENODEV;
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u32 val;
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/*
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* If there's a preferred bootcount device selected by the user (by
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* setting '/chosen/u-boot,bootcount-device' in the DTS), try to use
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* it if available.
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*/
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node = ofnode_get_chosen_node(propname);
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if (ofnode_valid(node))
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ret = uclass_get_device_by_ofnode(UCLASS_BOOTCOUNT, node, &dev);
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/* If there was no user-selected device, use the first available one */
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if (ret)
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ret = uclass_get_device(UCLASS_BOOTCOUNT, 0, &dev);
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if (dev)
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ret = dm_bootcount_get(dev, &val);
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if (ret)
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pr_debug("%s: failed to load bootcount\n", __func__);
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/* Return the 0, if the call to dm_bootcount_get failed */
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return ret ? 0 : val;
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}
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UCLASS_DRIVER(bootcount) = {
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.name = "bootcount",
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.id = UCLASS_BOOTCOUNT,
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};
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