From f963cc26dfd7832b6371c312a817a1950bfe398a Mon Sep 17 00:00:00 2001 From: Eric Auger Date: Fri, 29 Jun 2018 15:11:01 +0100 Subject: device_tree: Add qemu_fdt_node_unit_path This helper allows to retrieve the paths of nodes whose name match node-name or node-name@unit-address patterns. Signed-off-by: Eric Auger Message-id: 1530044492-24921-2-git-send-email-eric.auger@redhat.com Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- include/sysemu/device_tree.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include/sysemu') diff --git a/include/sysemu/device_tree.h b/include/sysemu/device_tree.h index e22e5bec9c..c16fd69bc0 100644 --- a/include/sysemu/device_tree.h +++ b/include/sysemu/device_tree.h @@ -43,6 +43,22 @@ void *load_device_tree_from_sysfs(void); char **qemu_fdt_node_path(void *fdt, const char *name, char *compat, Error **errp); +/** + * qemu_fdt_node_unit_path: return the paths of nodes matching a given + * node-name, ie. node-name and node-name@unit-address + * @fdt: pointer to the dt blob + * @name: node name + * @errp: handle to an error object + * + * returns a newly allocated NULL-terminated array of node paths. + * Use g_strfreev() to free it. If one or more nodes were found, the + * array contains the path of each node and the last element equals to + * NULL. If there is no error but no matching node was found, the + * returned array contains a single element equal to NULL. If an error + * was encountered when parsing the blob, the function returns NULL + */ +char **qemu_fdt_node_unit_path(void *fdt, const char *name, Error **errp); + int qemu_fdt_setprop(void *fdt, const char *node_path, const char *property, const void *val, int size); int qemu_fdt_setprop_cell(void *fdt, const char *node_path, -- cgit v1.2.3