diff options
author | Jan Remes <jan.remes@codasip.com> | 2022-05-13 13:58:40 +0300 |
---|---|---|
committer | Anup Patel <anup@brainfault.org> | 2022-05-14 07:46:24 +0300 |
commit | 90a9dd2b22bb5441df85a23e4e4690bec14fa1e5 (patch) | |
tree | 44b0785f4aa6e12f62aacbd6daafbfbf2891ac3c /lib/utils | |
parent | 851c14d455207f304ab9fa6fe4d399b7f8a950fe (diff) | |
download | opensbi-90a9dd2b22bb5441df85a23e4e4690bec14fa1e5.tar.xz |
lib: utils/fdt: introduce fdt_node_is_enabled()
If an FDT node contains a "status" property and this property is not
"ok" or "okay", this node should be ignored. Introduce a function that
checks this.
Signed-off-by: Jan Remes <jan.remes@codasip.com>
Reviewed-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'lib/utils')
-rw-r--r-- | lib/utils/fdt/fdt_helper.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/lib/utils/fdt/fdt_helper.c b/lib/utils/fdt/fdt_helper.c index 9a35969..3b45ae8 100644 --- a/lib/utils/fdt/fdt_helper.c +++ b/lib/utils/fdt/fdt_helper.c @@ -216,6 +216,24 @@ int fdt_get_node_addr_size(void *fdt, int node, int index, return 0; } +bool fdt_node_is_enabled(void *fdt, int nodeoff) +{ + int len; + const void *prop; + + prop = fdt_getprop(fdt, nodeoff, "status", &len); + if (!prop) + return true; + + if (!strncmp(prop, "okay", strlen("okay"))) + return true; + + if (!strncmp(prop, "ok", strlen("ok"))) + return true; + + return false; +} + int fdt_parse_hart_id(void *fdt, int cpu_offset, u32 *hartid) { int len; |