+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2013 Google, Inc
*
* (C) Copyright 2012
* Pavel Herrmann <morpheus.ibis@gmail.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <errno.h>
#include <fdtdec.h>
#include <malloc.h>
-#include <libfdt.h>
+#include <linux/libfdt.h>
#include <dm/device.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
+#include <dm/of.h>
+#include <dm/of_access.h>
#include <dm/platdata.h>
+#include <dm/read.h>
#include <dm/root.h>
#include <dm/uclass.h>
#include <dm/util.h>
return gd->dm_root;
}
+void dm_fixup_for_gd_move(struct global_data *new_gd)
+{
+ /* The sentinel node has moved, so update things that point to it */
+ if (gd->dm_root) {
+ new_gd->uclass_root.next->prev = &new_gd->uclass_root;
+ new_gd->uclass_root.prev->next = &new_gd->uclass_root;
+ }
+}
+
fdt_addr_t dm_get_translation_offset(void)
{
struct udevice *root = dm_root();
#endif
-int dm_init(void)
+int dm_init(bool of_live)
{
int ret;
if (ret)
return ret;
#if CONFIG_IS_ENABLED(OF_CONTROL)
- DM_ROOT_NON_CONST->of_offset = 0;
+# if CONFIG_IS_ENABLED(OF_LIVE)
+ if (of_live)
+ DM_ROOT_NON_CONST->node = np_to_ofnode(gd->of_root);
+ else
+#endif
+ DM_ROOT_NON_CONST->node = offset_to_ofnode(0);
#endif
ret = device_probe(DM_ROOT_NON_CONST);
if (ret)
int dm_uninit(void)
{
- device_remove(dm_root());
+ device_remove(dm_root(), DM_REMOVE_NORMAL);
device_unbind(dm_root());
return 0;
}
+#if CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)
+int dm_remove_devices_flags(uint flags)
+{
+ device_remove(dm_root(), flags);
+
+ return 0;
+}
+#endif
+
int dm_scan_platdata(bool pre_reloc_only)
{
int ret;
return ret;
}
+#if CONFIG_IS_ENABLED(OF_LIVE)
+static int dm_scan_fdt_live(struct udevice *parent,
+ const struct device_node *node_parent,
+ bool pre_reloc_only)
+{
+ struct device_node *np;
+ int ret = 0, err;
+
+ for (np = node_parent->child; np; np = np->sibling) {
+ if (pre_reloc_only &&
+ !of_find_property(np, "u-boot,dm-pre-reloc", NULL))
+ continue;
+ if (!of_device_is_available(np)) {
+ pr_debug(" - ignoring disabled device\n");
+ continue;
+ }
+ err = lists_bind_fdt(parent, np_to_ofnode(np), NULL);
+ if (err && !ret) {
+ ret = err;
+ debug("%s: ret=%d\n", np->name, ret);
+ }
+ }
+
+ if (ret)
+ dm_warn("Some drivers failed to bind\n");
+
+ return ret;
+}
+#endif /* CONFIG_IS_ENABLED(OF_LIVE) */
+
#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
-int dm_scan_fdt_node(struct udevice *parent, const void *blob, int offset,
- bool pre_reloc_only)
+/**
+ * dm_scan_fdt_node() - Scan the device tree and bind drivers for a node
+ *
+ * This scans the subnodes of a device tree node and and creates a driver
+ * for each one.
+ *
+ * @parent: Parent device for the devices that will be created
+ * @blob: Pointer to device tree blob
+ * @offset: Offset of node to scan
+ * @pre_reloc_only: If true, bind only drivers with the DM_FLAG_PRE_RELOC
+ * flag. If false bind all drivers.
+ * @return 0 if OK, -ve on error
+ */
+static int dm_scan_fdt_node(struct udevice *parent, const void *blob,
+ int offset, bool pre_reloc_only)
{
int ret = 0, err;
for (offset = fdt_first_subnode(blob, offset);
offset > 0;
offset = fdt_next_subnode(blob, offset)) {
+ /* "chosen" node isn't a device itself but may contain some: */
+ if (!strcmp(fdt_get_name(blob, offset, NULL), "chosen")) {
+ pr_debug("parsing subnodes of \"chosen\"\n");
+
+ err = dm_scan_fdt_node(parent, blob, offset,
+ pre_reloc_only);
+ if (err && !ret)
+ ret = err;
+ continue;
+ }
+
if (pre_reloc_only &&
- !fdt_getprop(blob, offset, "u-boot,dm-pre-reloc", NULL))
+ !dm_fdt_pre_reloc(blob, offset))
continue;
if (!fdtdec_get_is_enabled(blob, offset)) {
- dm_dbg(" - ignoring disabled device\n");
+ pr_debug(" - ignoring disabled device\n");
continue;
}
- err = lists_bind_fdt(parent, blob, offset, NULL);
+ err = lists_bind_fdt(parent, offset_to_ofnode(offset), NULL);
if (err && !ret) {
ret = err;
debug("%s: ret=%d\n", fdt_get_name(blob, offset, NULL),
int dm_scan_fdt_dev(struct udevice *dev)
{
- if (dev->of_offset == -1)
+ if (!dev_of_valid(dev))
return 0;
- return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset,
+#if CONFIG_IS_ENABLED(OF_LIVE)
+ if (of_live_active())
+ return dm_scan_fdt_live(dev, dev_np(dev),
+ gd->flags & GD_FLG_RELOC ? false : true);
+ else
+#endif
+ return dm_scan_fdt_node(dev, gd->fdt_blob, dev_of_offset(dev),
gd->flags & GD_FLG_RELOC ? false : true);
}
int dm_scan_fdt(const void *blob, bool pre_reloc_only)
{
+#if CONFIG_IS_ENABLED(OF_LIVE)
+ if (of_live_active())
+ return dm_scan_fdt_live(gd->dm_root, gd->of_root,
+ pre_reloc_only);
+ else
+#endif
return dm_scan_fdt_node(gd->dm_root, blob, 0, pre_reloc_only);
}
+#else
+static int dm_scan_fdt_node(struct udevice *parent, const void *blob,
+ int offset, bool pre_reloc_only)
+{
+ return 0;
+}
#endif
+int dm_extended_scan_fdt(const void *blob, bool pre_reloc_only)
+{
+ int ret;
+ ofnode node;
+
+ ret = dm_scan_fdt(gd->fdt_blob, pre_reloc_only);
+ if (ret) {
+ debug("dm_scan_fdt() failed: %d\n", ret);
+ return ret;
+ }
+
+ /* bind fixed-clock */
+ node = ofnode_path("/clocks");
+ /* if no DT "clocks" node, no need to go further */
+ if (!ofnode_valid(node))
+ return ret;
+
+#if CONFIG_IS_ENABLED(OF_LIVE)
+ if (of_live_active())
+ ret = dm_scan_fdt_live(gd->dm_root, node.np, pre_reloc_only);
+ else
+#endif
+ ret = dm_scan_fdt_node(gd->dm_root, gd->fdt_blob, node.of_offset,
+ pre_reloc_only);
+ if (ret)
+ debug("dm_scan_fdt_node() failed: %d\n", ret);
+
+ return ret;
+}
+
__weak int dm_scan_other(bool pre_reloc_only)
{
return 0;
{
int ret;
- ret = dm_init();
+ ret = dm_init(IS_ENABLED(CONFIG_OF_LIVE));
if (ret) {
debug("dm_init() failed: %d\n", ret);
return ret;
}
if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
- ret = dm_scan_fdt(gd->fdt_blob, pre_reloc_only);
+ ret = dm_extended_scan_fdt(gd->fdt_blob, pre_reloc_only);
if (ret) {
- debug("dm_scan_fdt() failed: %d\n", ret);
+ debug("dm_extended_scan_dt() failed: %d\n", ret);
return ret;
}
}
projects / u-boot / blobdiff