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feat(fdt-wrappers): add function to read uint64 with default value

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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
This commit is contained in:
Nicolas Le Bayon 2023-05-17 12:36:01 +02:00 • committed by Maxime Méré
parent b2c535da56
commit bc8dfca64d
2 changed files with 17 additions and 2 deletions
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15
common/fdt_wrappers.c
View file

@ -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 @@ int fdt_read_uint64(const void *dtb, int node, const char *prop_name,
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.

4
include/common/fdt_wrappers.h
View file

@ -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 @@ uint32_t fdt_read_uint32_default(const void *dtb, int node,
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,