Hi, > Am 04.10.2016 um 15:43 schrieb Denis 'GNUtoo' Carikli <gnu...@no-log.org>: > > On Tue, 4 Oct 2016 02:19:06 +0100 > Josh Branning <lovell.josh...@gmail.com> wrote: > >> Apple iPhone 7 was released and made use of an iCE5LP4K device. [1] > Are you sure that this FPGA is used for the baseband?
Footnote 35 of the Wikipedia article [1] https://en.wikipedia.org/wiki/ICE_(FPGA)#iCE40_.2840_nm.29links to mentioned by Josh is https://web.archive.org/web/20160916230725/http://www.chipworks.com/about-chipworks/overview/blog/apple-iphone-7-teardown This says: The Baseband is a PMB9943 (XMM7360) from Intel. In the “miscellaneous” section we have; • Lattice Semiconductor FPGA ICE5LP4K; So it is probably used for fingerprint sensing or whatever. > If so, do we have more information on the design of this baseband: > - What external circuits does it require. > - Is it possible to design a libre baseband based on such FPGAs? > > As for the iPhone 7, I fear that it won't be realistic to expect it to > be ported to Replicant. > The iDroid project ported some Apple smartphones under Android. The > iPhone 3g was, in iDroid, the device with the best support. > > The amount of work required to make such devices usable seemed to be > huge. > > Despite that, the people involved in the port succeeded to make lot of > the peripherals and hardware features work, but not the power > management[1]. > > As a result that device cannot used as a regular smartphone. > I recall that suspend-to-ram wasn't even working, so it was probably > lasting very few hours, I'd blindly guess it was something like 3/4/5 hours. > > Also I fear that the ability to run your own bootloader and so on would > be severely restricted. That would probably require the bootrom to have > some bug[2]. > > [1]shttps://web.archive.org/web/20141024013316/http://www.idroidproject.org/wiki/Status > [2]https://www.theiphonewiki.com/wiki/Bootrom#Bootrom_Exploits > > Denis. BR, Nikolaus
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