On 2022/01/02 14:50, Linus Walleij wrote: > On Sun, Dec 26, 2021 at 4:37 PM Hector Martin <marcan@xxxxxxxxx> wrote: > >> On Device Tree platforms, it is customary to be able to set the MAC >> address via the Device Tree, as it is often stored in system firmware. >> This is particularly relevant for Apple ARM64 platforms, where this >> information comes from system configuration and passed through by the >> bootloader into the DT. >> >> Implement support for this by fetching the platform MAC address and >> adding or replacing the macaddr= property in nvram. This becomes the >> dongle's default MAC address. >> >> On platforms with an SROM MAC address, this overrides it. On platforms >> without one, such as Apple ARM64 devices, this is required for the >> firmware to boot (it will fail if it does not have a valid MAC at all). >> >> Signed-off-by: Hector Martin <marcan@xxxxxxxxx> > > This looks very helpful. > >> + /* Add space for properties we may add */ >> + size += strlen(BRCMF_FW_DEFAULT_BOARDREV) + 1; >> + size += BRCMF_FW_MACADDR_LEN + 1; > > Add some note to the commit log why you also make space for > boardrev? (Looks useful.) Is the boardrev spacing in the right > patch? Ah, that was a drive-by fix. While adding the MACADDR space I noticed we weren't allocating space for BOARDREV... not sure if any platforms hit this; it would cause an overflow if there are platforms with no board_rev in the nvram that also don't have enough comments/junk to otherwise make space for it. I'll move it to another patch so it's more evident, and it should get a Fixes: too. -- Hector Martin (marcan@xxxxxxxxx) Public Key: https://mrcn.st/pub
