+// 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 <log.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>
DECLARE_GLOBAL_DATA_PTR;
-struct root_priv {
- fdt_addr_t translation_offset; /* optional translation offset */
-};
-
static const struct driver_info root_info = {
.name = "root_driver",
};
}
}
-fdt_addr_t dm_get_translation_offset(void)
-{
- struct udevice *root = dm_root();
- struct root_priv *priv = dev_get_priv(root);
-
- return priv->translation_offset;
-}
-
-void dm_set_translation_offset(fdt_addr_t offs)
-{
- struct udevice *root = dm_root();
- struct root_priv *priv = dev_get_priv(root);
-
- priv->translation_offset = offs;
-}
-
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
void fix_drivers(void)
{
#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)
{
device_remove(dm_root(), DM_REMOVE_NORMAL);
device_unbind(dm_root());
+ gd->dm_root = NULL;
return 0;
}
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 (!of_device_is_available(np)) {
+ pr_debug(" - ignoring disabled device\n");
+ continue;
+ }
+ err = lists_bind_fdt(parent, np_to_ofnode(np), NULL,
+ pre_reloc_only);
+ 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)) {
- if (pre_reloc_only &&
- !dm_fdt_pre_reloc(blob, offset))
- continue;
+ const char *node_name = fdt_get_name(blob, offset, NULL);
+
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,
+ pre_reloc_only);
if (err && !ret) {
ret = err;
- debug("%s: ret=%d\n", fdt_get_name(blob, offset, NULL),
- ret);
+ debug("%s: ret=%d\n", node_name, ret);
}
}
int dm_scan_fdt_dev(struct udevice *dev)
{
- if (dev_of_offset(dev) == -1)
+ if (!dev_of_valid(dev))
return 0;
+#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);
}
+
+static int dm_scan_fdt_ofnode_path(const void *blob, const char *path,
+ bool pre_reloc_only)
+{
+ ofnode node;
+
+ node = ofnode_path(path);
+ if (!ofnode_valid(node))
+ return 0;
+
+#if CONFIG_IS_ENABLED(OF_LIVE)
+ if (of_live_active())
+ return dm_scan_fdt_live(gd->dm_root, node.np, pre_reloc_only);
+#endif
+ return dm_scan_fdt_node(gd->dm_root, blob, node.of_offset,
+ pre_reloc_only);
+}
+
+int dm_extended_scan_fdt(const void *blob, bool pre_reloc_only)
+{
+ int ret, i;
+ const char * const nodes[] = {
+ "/chosen",
+ "/clocks",
+ "/firmware"
+ };
+
+ ret = dm_scan_fdt(blob, pre_reloc_only);
+ if (ret) {
+ debug("dm_scan_fdt() failed: %d\n", ret);
+ return ret;
+ }
+
+ /* Some nodes aren't devices themselves but may contain some */
+ for (i = 0; i < ARRAY_SIZE(nodes); i++) {
+ ret = dm_scan_fdt_ofnode_path(blob, nodes[i], pre_reloc_only);
+ if (ret) {
+ debug("dm_scan_fdt() scan for %s failed: %d\n",
+ nodes[i], ret);
+ return ret;
+ }
+ }
+
+ return ret;
+}
#endif
__weak int dm_scan_other(bool pre_reloc_only)
{
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;
}
}
U_BOOT_DRIVER(root_driver) = {
.name = "root_driver",
.id = UCLASS_ROOT,
- .priv_auto_alloc_size = sizeof(struct root_priv),
};
/* This is the root uclass */
projects / oweals / u-boot.git / blobdiff