On 2016-05-27 02:13, Maxime Ripard wrote:
Add a function to retrieve the highest phandle in a given device tree.
Signed-off-by: Maxime Ripard maxime.ripard@free-electrons.com
include/libfdt.h | 13 +++++++++++++ lib/libfdt/fdt_ro.c | 15 +++++++++++++++ 2 files changed, 28 insertions(+)
diff --git a/include/libfdt.h b/include/libfdt.h index 4e8eb9ede3a4..1e01b2c7ebdf 100644 --- a/include/libfdt.h +++ b/include/libfdt.h @@ -284,6 +284,19 @@ int fdt_move(const void *fdt, void *buf, int bufsize); const char *fdt_string(const void *fdt, int stroffset);
/**
- fdt_get_max_phandle - retrieves the highest phandle in a tree
- @fdt: pointer to the device tree blob
- fdt_get_max_phandle retrieves the highest phandlle in the given
Typo: phandlle
- device tree
- returns:
the highest phandle on success
0, if an error occured
Typo: occur(r)ed
Otherwise looks good to me!
Reviewed-by: Stefan Agner stefan@agner.ch
- */
+uint32_t fdt_get_max_phandle(const void *fdt);
+/**
- fdt_num_mem_rsv - retrieve the number of memory reserve map entries
- @fdt: pointer to the device tree blob
diff --git a/lib/libfdt/fdt_ro.c b/lib/libfdt/fdt_ro.c index 7b0777b67eb3..9130ce718965 100644 --- a/lib/libfdt/fdt_ro.c +++ b/lib/libfdt/fdt_ro.c @@ -47,6 +47,21 @@ static int _fdt_string_eq(const void *fdt, int stroffset, return (strnlen(p, len + 1) == len) && (memcmp(p, s, len) == 0); }
+uint32_t fdt_get_max_phandle(const void *fdt) +{
- uint32_t max_phandle = 0, phandle;
- int offset;
- for (offset = fdt_next_node(fdt, -1, NULL); offset >= 0;
offset = fdt_next_node(fdt, offset, NULL)) {phandle = fdt_get_phandle(fdt, offset);if (phandle > max_phandle)max_phandle = phandle;- }
- return max_phandle;
+}
int fdt_get_mem_rsv(const void *fdt, int n, uint64_t *address, uint64_t *size) { FDT_CHECK_HEADER(fdt);