diff options
Diffstat (limited to 'drivers/of/fdt.c')
| -rw-r--r-- | drivers/of/fdt.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 0b38a6aa8603..4129f7442244 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -20,6 +20,7 @@ #include <linux/errno.h> #include <linux/slab.h> #include <linux/libfdt.h> +#include <linux/debugfs.h> #include <asm/setup.h> /* for COMMAND_LINE_SIZE */ #include <asm/page.h> @@ -916,4 +917,27 @@ void __init unflatten_and_copy_device_tree(void) unflatten_device_tree(); } +#if defined(CONFIG_DEBUG_FS) && defined(DEBUG) +static struct debugfs_blob_wrapper flat_dt_blob; + +static int __init of_flat_dt_debugfs_export_fdt(void) +{ + struct dentry *d = debugfs_create_dir("device-tree", NULL); + + if (!d) + return -ENOENT; + + flat_dt_blob.data = initial_boot_params; + flat_dt_blob.size = fdt_totalsize(initial_boot_params); + + d = debugfs_create_blob("flat-device-tree", S_IFREG | S_IRUSR, + d, &flat_dt_blob); + if (!d) + return -ENOENT; + + return 0; +} +module_init(of_flat_dt_debugfs_export_fdt); +#endif + #endif /* CONFIG_OF_EARLY_FLATTREE */ |