path: root/sound
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authorSameer Goel <sgoel@codeaurora.org>2017-04-03 11:26:33 +0900
committerAKASHI Takahiro <takahiro.akashi@linaro.org>2017-06-08 19:19:52 +0900
commit64e72fbc97b29298f7aa89c30fb221e1a9d02fed (patch)
treef2ac59a5248769d5354b099d74328ceb1ad4c5b4 /sound
parent844e91a54320a16bd8bdab543abc789ecea189c2 (diff)
efi/libstub/arm*: Set default address and size cells values for an empty dtblsk/kdump/for-v4.9
In cases where a device tree is not provided (ie ACPI based system), an empty fdt is generated by efistub. #address-cells and #size-cells are not set in the empty fdt, so they default to 1 (4 byte wide). This can be an issue on 64-bit systems where values representing addresses, etc may be 8 bytes wide as the default value does not align with the general requirements for an empty DTB, and is fragile when passed to other agents as extra care is required to read the entire width of a value. This issue is observed on Qualcomm Technologies QDF24XX platforms when kexec-tools inserts 64-bit addresses into the "linux,elfcorehdr" and "linux,usable-memory-range" properties of the fdt. When the values are later consumed, they are truncated to 32-bit. Setting #address-cells and #size-cells to 2 at creation of the empty fdt resolves the observed issue, and makes the fdt less fragile. Signed-off-by: Sameer Goel <sgoel@codeaurora.org> Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org> Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'sound')
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