Thread (98 messages) 98 messages, 7 authors, 2022-01-03

Re: [PATCH 17/34] brcmfmac: pcie: Provide a buffer of random bytes to the device

From: Linus Walleij <hidden>
Date: 2022-01-02 06:00:11
Also in: linux-acpi, linux-devicetree, linux-wireless, lkml

On Sun, Dec 26, 2021 at 4:38 PM Hector Martin [off-list ref] wrote:
Newer Apple firmwares on chipsets without a hardware RNG require the
host to provide a buffer of 256 random bytes to the device on
initialization. This buffer is present immediately before NVRAM,
suffixed by a footer containing a magic number and the buffer length.

This won't affect chips/firmwares that do not use this feature, so do it
unconditionally.

Signed-off-by: Hector Martin <redacted>
Reviewed-by: Linus Walleij <redacted>

Yours,
Linus Walleij
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