feat(fdt-wrappers): add function to read uint64 with default value
Adds a new utility function fdt_read_uint64_default() to read a uint64
value with a default value, as it is already done for uint32.
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Maxime Méré <maxime.mere@foss.st.com>
Change-Id: Ibc85e30c3e4dd4b5171bdec106f4e32eb78c579f
diff --git a/common/fdt_wrappers.c b/common/fdt_wrappers.c
index 783b660..b213ffa 100644
--- a/common/fdt_wrappers.c
+++ b/common/fdt_wrappers.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2018-2023, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2024, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -88,6 +88,19 @@
return 0;
}
+uint64_t fdt_read_uint64_default(const void *dtb, int node,
+ const char *prop_name, uint64_t dflt_value)
+{
+ uint64_t ret = dflt_value;
+ int err = fdt_read_uint64(dtb, node, prop_name, &ret);
+
+ if (err < 0) {
+ return dflt_value;
+ }
+
+ return ret;
+}
+
/*
* Read bytes from a given property of the given node. Any number of
* bytes of the property can be read. The fdt pointer is updated.
diff --git a/include/common/fdt_wrappers.h b/include/common/fdt_wrappers.h
index abbf976..de08f1d 100644
--- a/include/common/fdt_wrappers.h
+++ b/include/common/fdt_wrappers.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2018-2023, Arm Limited and Contributors. All rights reserved.
+ * Copyright (c) 2018-2024, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -21,6 +21,8 @@
const char *prop_name, uint32_t dflt_value);
int fdt_read_uint64(const void *dtb, int node, const char *prop_name,
uint64_t *value);
+uint64_t fdt_read_uint64_default(const void *dtb, int node,
+ const char *prop_name, uint64_t dflt_value);
int fdt_read_uint32_array(const void *dtb, int node, const char *prop_name,
unsigned int cells, uint32_t *value);
int fdtw_read_string(const void *dtb, int node, const char *prop,