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-rw-r--r--src/lib/device_tree.c49
1 files changed, 38 insertions, 11 deletions
diff --git a/src/lib/device_tree.c b/src/lib/device_tree.c
index bbcd7c06f6..3c4bd24462 100644
--- a/src/lib/device_tree.c
+++ b/src/lib/device_tree.c
@@ -80,21 +80,36 @@ static int dt_prop_is_phandle(struct device_tree_property *prop)
static void print_indent(int depth)
{
- while (depth--)
- printk(BIOS_DEBUG, " ");
+ printk(BIOS_DEBUG, "%*s", depth * 8, "");
}
static void print_property(const struct fdt_property *prop, int depth)
{
+ int is_string = prop->size > 0 &&
+ ((char *)prop->data)[prop->size - 1] == '\0';
+
+ if (is_string)
+ for (const char *c = prop->data; *c != '\0'; c++)
+ if (!isprint(*c))
+ is_string = 0;
+
print_indent(depth);
- printk(BIOS_DEBUG, "prop \"%s\" (%d bytes).\n", prop->name, prop->size);
- print_indent(depth + 1);
- for (int i = 0; i < MIN(25, prop->size); i++) {
- printk(BIOS_DEBUG, "%02x ", ((uint8_t *)prop->data)[i]);
+ if (is_string) {
+ printk(BIOS_DEBUG, "%s = \"%s\";\n",
+ prop->name, (const char *)prop->data);
+ } else {
+ printk(BIOS_DEBUG, "%s = < ", prop->name);
+ for (int i = 0; i < MIN(128, prop->size); i += 4) {
+ uint32_t val = 0;
+ for (int j = 0; j < MIN(4, prop->size - i); j++)
+ val |= ((uint8_t *)prop->data)[i + j] <<
+ (24 - j * 8);
+ printk(BIOS_DEBUG, "%#.2x ", val);
+ }
+ if (prop->size > 128)
+ printk(BIOS_DEBUG, "...");
+ printk(BIOS_DEBUG, ">;\n");
}
- if (prop->size > 25)
- printk(BIOS_DEBUG, "...");
- printk(BIOS_DEBUG, "\n");
}
static int print_flat_node(const void *blob, uint32_t start_offset, int depth)
@@ -109,7 +124,7 @@ static int print_flat_node(const void *blob, uint32_t start_offset, int depth)
offset += size;
print_indent(depth);
- printk(BIOS_DEBUG, "name = %s\n", name);
+ printk(BIOS_DEBUG, "%s {\n", name);
struct fdt_property prop;
while ((size = fdt_next_property(blob, offset, &prop))) {
@@ -118,9 +133,14 @@ static int print_flat_node(const void *blob, uint32_t start_offset, int depth)
offset += size;
}
+ printk(BIOS_DEBUG, "\n"); // empty line between props and nodes
+
while ((size = print_flat_node(blob, offset, depth + 1)))
offset += size;
+ print_indent(depth);
+ printk(BIOS_DEBUG, "}\n");
+
return offset - start_offset + sizeof(uint32_t);
}
@@ -458,15 +478,22 @@ void dt_flatten(const struct device_tree *tree, void *start_dest)
static void print_node(const struct device_tree_node *node, int depth)
{
print_indent(depth);
- printk(BIOS_DEBUG, "name = %s\n", node->name);
+ if (depth == 0) // root node has no name, print a starting slash
+ printk(BIOS_DEBUG, "/");
+ printk(BIOS_DEBUG, "%s {\n", node->name);
struct device_tree_property *prop;
list_for_each(prop, node->properties, list_node)
print_property(&prop->prop, depth + 1);
+ printk(BIOS_DEBUG, "\n"); // empty line between props and nodes
+
struct device_tree_node *child;
list_for_each(child, node->children, list_node)
print_node(child, depth + 1);
+
+ print_indent(depth);
+ printk(BIOS_DEBUG, "};\n");
}
void dt_print_node(const struct device_tree_node *node)