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| 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 | |
| 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>
| -rw-r--r-- | include/sbi_utils/fdt/fdt_helper.h | 2 | ||||
| -rw-r--r-- | lib/utils/fdt/fdt_helper.c | 18 |
2 files changed, 20 insertions, 0 deletions
diff --git a/include/sbi_utils/fdt/fdt_helper.h b/include/sbi_utils/fdt/fdt_helper.h index 2279f96..a9c0a8a 100644 --- a/include/sbi_utils/fdt/fdt_helper.h +++ b/include/sbi_utils/fdt/fdt_helper.h @@ -48,6 +48,8 @@ int fdt_parse_phandle_with_args(void *fdt, int nodeoff, int fdt_get_node_addr_size(void *fdt, int node, int index, uint64_t *addr, uint64_t *size); +bool fdt_node_is_enabled(void *fdt, int nodeoff); + int fdt_parse_hart_id(void *fdt, int cpu_offset, u32 *hartid); int fdt_parse_max_hart_id(void *fdt, u32 *max_hartid); 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; |