From 819d2819303654c6829d572e698e2d0021c08599 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Mon, 23 Nov 2009 19:44:23 -0700 Subject: of/flattree: merge of_get_flat_dt_root Merge common code between PowerPC and MicroBlaze Signed-off-by: Grant Likely Reviewed-by: Wolfram Sang Tested-by: Michal Simek --- drivers/of/fdt.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'drivers') diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index dd9057cb7aa7..f41d739aa2f7 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -83,3 +83,19 @@ int __init of_scan_flat_dt(int (*it)(unsigned long node, return rc; } + +/** + * of_get_flat_dt_root - find the root node in the flat blob + */ +unsigned long __init of_get_flat_dt_root(void) +{ + unsigned long p = ((unsigned long)initial_boot_params) + + initial_boot_params->off_dt_struct; + + while (*((u32 *)p) == OF_DT_NOP) + p += 4; + BUG_ON(*((u32 *)p) != OF_DT_BEGIN_NODE); + p += 4; + return _ALIGN(p + strlen((char *)p) + 1, 4); +} + -- cgit v1.2.3-58-ga151