@@ -728,17 +728,26 @@ static void fdt_prop_format_val(GString *buf, const char *propname,
g_string_append_printf(buf, "]\n");
}
-static void fdt_format_node(GString *buf, int node, int depth)
+
+static void fdt_format_node(GString *buf, int node, int depth,
+ const char *fullpath)
{
const struct fdt_property *prop = NULL;
+ const char *nodename = NULL;
const char *propname = NULL;
void *fdt = current_machine->fdt;
int padding = depth * 4;
int property = 0;
+ int parent = node;
int prop_size;
- g_string_append_printf(buf, "%*s%s {\n", padding, "",
- fdt_get_name(fdt, node, NULL));
+ if (fullpath != NULL) {
+ nodename = fullpath;
+ } else {
+ nodename = fdt_get_name(fdt, node, NULL);
+ }
+
+ g_string_append_printf(buf, "%*s%s {\n", padding, "", nodename);
padding += 4;
@@ -763,6 +772,10 @@ static void fdt_format_node(GString *buf, int node, int depth)
}
}
+ fdt_for_each_subnode(node, fdt, parent) {
+ fdt_format_node(buf, node, depth + 1, NULL);
+ }
+
padding -= 4;
g_string_append_printf(buf, "%*s}\n", padding, "");
}
@@ -783,7 +796,7 @@ HumanReadableText *qemu_fdt_qmp_query_fdt(const char *nodepath, Error **errp)
return NULL;
}
- fdt_format_node(buf, node, 0);
+ fdt_format_node(buf, node, 0, nodepath);
return human_readable_text_from_str(buf);
}
Printing subnodes of a given node will allow us to show a whole subtree, which the additional perk of 'info fdt /' being able to print the whole FDT. Since we're now printing more than one subnode, change 'fdt_info' to print the full path of the first node. This small tweak helps identifying which node or subnode are being displayed. To demostrate this capability without printing the whole FDT, the '/cpus/cpu-map' node from the ARM 'virt' machine has a lot of subnodes: (qemu) info fdt /cpus/cpu-map /cpus/cpu-map { socket0 { cluster0 { core0 { cpu = <0x8001> } } } } Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> --- softmmu/device_tree.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-)