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The embedded brains GmbH & Co. KG is the legal successor of embedded
brains GmbH.
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UINT32_MAX is an integer of type unsigned int. UINT32_MAX + 1 overflows
unless explicitly computed as unsigned long long. This led to some
invalid addresses being treated as valid.
Cast UINT32_MAX to uint64_t explicitly.
Signed-off-by: Elvira Khabirova <e.khabirova@omp.ru>
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c12b2b0c20eb "libfdt: fdt_address_cells() and fdt_size_cells()" introduced
a bug as it consolidated code between the helpers for getting
#address-cells and #size-cells. Specifically #size-cells is allowed to
be 0, and is frequently found so in practice for /cpus. IEEE1275 only
requires implementations to handle 1..4 for #address-cells, although one
could make a case for #address-cells == #size-cells == 0 being used to
represent a bridge with a single port.
While we're there, it's not totally obvious that the existing implicit
cast of a u32 to int will give the correct results according to strict C,
although it does work in practice. Straighten that up to cast only after
we've made our range checks.
Reported-by: yonghuhaige via https://github.com/dgibson/dtc/issues/28
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Replace instances of dual GPLv2 or BSD license boilerplate with SPDX tags.
Signed-off-by: Rob Herring <robh@kernel.org>
Message-Id: <20190620211944.9378-3-robh@kernel.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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This function will append an address range property using parent node's
"#address-cells" and "#size-cells" properties.
It will be used in implementing kdump with kexec_file_load system call
at linux kernel for arm64 once it is merged into kernel tree.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Message-Id: <20190327061552.17170-2-takahiro.akashi@linaro.org>
[dwg: Correct a SEGV error in the testcase]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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According to the device tree specification, the default value for
#size-cells is 1, but fdt_size_cells() was returning 2 if this property
was not present.
This patch also makes fdt_address_cells() and fdt_size_cells() conform
to the behaviour documented in libfdt.h. The defaults are only returned
if fdt_getprop() returns -FDT_ERR_NOTFOUND, otherwise the actual error
is returned.
Signed-off-by: John Clarke <johnc@kirriwa.net>
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Add internal fdt_cells() to avoid copy and paste. Test error cases and
default values. Fix typo in fdt_size_cells() documentation comment.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Import from:
git://git.kernel.org/pub/scm/utils/dtc/dtc.git
Commit:
604e61e081e3c6c8fa1a8189c71cb3908a5bbc1e
Date:
2015-09-29T09:09:08Z
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