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libfdt: Check for 8-byte address alignment in fdt_ro_probe_()

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The device tree must be loaded in to memory at an 8-byte aligned
address.  Add a check for this condition in fdt_ro_probe_() and a new
error code to return if we are not.

Signed-off-by: Tom Rini <trini@konsulko.com>
Message-Id: <20201104130605.28874-1-trini@konsulko.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Tom Rini 2020-11-04 08:06:05 -05:00 • committed by David Gibson
parent 67849a3279
commit 5e735860c4
2 changed files with 9 additions and 1 deletions
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6
libfdt/libfdt.h
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@ -101,7 +101,11 @@ extern "C" {
/* FDT_ERR_BADFLAGS: The function was passed a flags field that
* contains invalid flags or an invalid combination of flags. */
#define FDT_ERR_MAX 18
#define FDT_ERR_ALIGNMENT 19
/* FDT_ERR_ALIGNMENT: The device tree base address is not 8-byte
* aligned. */
#define FDT_ERR_MAX 19
/* constants */
#define FDT_MAX_PHANDLE 0xfffffffe