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| author | Alexander Graf <agraf@suse.de> | 2014-04-11 17:09:41 +0200 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2014-04-22 17:58:45 -0700 |
| commit | c48e686889395ee6d33c7a7d76f8399839b699d1 (patch) | |
| tree | 035b94a6b4d5847048f3b4f7070dc7f4ac9b1d7f /include/fdt_support.h | |
| parent | 94fb182cdf5f39befc822cd5a1110a1ca3b6631d (diff) | |
| download | u-boot-imx-c48e686889395ee6d33c7a7d76f8399839b699d1.zip u-boot-imx-c48e686889395ee6d33c7a7d76f8399839b699d1.tar.gz u-boot-imx-c48e686889395ee6d33c7a7d76f8399839b699d1.tar.bz2 | |
fdt_support: Add helper function to read "ranges" property
This patch adds a helper function that can be used to interpret most
"ranges" properties in the device tree.
It reads the n'th range out of a "ranges" array and returns the node's
virtual address of the range, the physical address that range starts at
and the size of the range.
Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Scott Wood <scottwood@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'include/fdt_support.h')
| -rw-r--r-- | include/fdt_support.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/fdt_support.h b/include/fdt_support.h index 61383dd..b77a0f1 100644 --- a/include/fdt_support.h +++ b/include/fdt_support.h @@ -87,6 +87,8 @@ int fdt_add_edid(void *blob, const char *compat, unsigned char *buf); int fdt_verify_alias_address(void *fdt, int anode, const char *alias, u64 addr); u64 fdt_get_base_address(void *fdt, int node); +int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr, + uint64_t *addr, uint64_t *len); enum fdt_status { FDT_STATUS_OKAY, |