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| author | Grant Likely <grant.likely@secretlab.ca> | 2009-11-23 19:44:23 -0700 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2009-11-23 19:44:23 -0700 |
| commit | 819d2819303654c6829d572e698e2d0021c08599 (patch) | |
| tree | 8e98224edfc837a630625b9e05c74121c7fa9b3f /drivers/of | |
| parent | c8cb7a59842c0b512b44f6f818cdb0b5a3ddc89e (diff) | |
| download | linux-819d2819303654c6829d572e698e2d0021c08599.tar.gz linux-819d2819303654c6829d572e698e2d0021c08599.tar.bz2 linux-819d2819303654c6829d572e698e2d0021c08599.zip | |
of/flattree: merge of_get_flat_dt_root
Merge common code between PowerPC and MicroBlaze
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>
Tested-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/fdt.c | 16 |
1 files changed, 16 insertions, 0 deletions
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); +} + |