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device tree: add add_subnode command

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We want to be able to create subnodes in our device tree, so export it through
the qemu device tree abstraction framework.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2011-07-22 13:55:37 +02:00
parent 10f25a46c5
commit 80ad781643
2 changed files with 25 additions and 0 deletions
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24
device_tree.c
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@ -118,3 +118,27 @@ int qemu_devtree_nop_node(void *fdt, const char *node_path)
return fdt_nop_node(fdt, offset);
}
int qemu_devtree_add_subnode(void *fdt, const char *name)
{
int offset;
char *dupname = g_strdup(name);
char *basename = strrchr(dupname, '/');
int retval;
if (!basename) {
return -1;
}
basename[0] = '\0';
basename++;
offset = fdt_path_offset(fdt, dupname);
if (offset < 0) {
return offset;
}
retval = fdt_add_subnode(fdt, offset, basename);
g_free(dupname);
return retval;
}

1
device_tree.h
View File

@ -23,5 +23,6 @@ int qemu_devtree_setprop_cell(void *fdt, const char *node_path,
int qemu_devtree_setprop_string(void *fdt, const char *node_path,
const char *property, const char *string);
int qemu_devtree_nop_node(void *fdt, const char *node_path);
int qemu_devtree_add_subnode(void *fdt, const char *name);
#endif /* __DEVICE_TREE_H__ */