Date: Sun, 11 Jan 2015 21:17:48 +0100 From: Bernd Walter <ticso@cicely7.cicely.de> To: Adrian Chadd <adrian@freebsd.org> Cc: Bernd Walter <ticso@cicely7.cicely.de>, ticso@cicely.de, "freebsd-mips@freebsd.org" <freebsd-mips@freebsd.org> Subject: Re: Booting on AR9331 based Easylink EL-M150 Message-ID: <20150111201748.GI46805@cicely7.cicely.de> In-Reply-To: <CAJ-VmonBXSPjP7CZ7JyJ4qYc6QwkM4r6=eK4snjSBoD3eu8e5g@mail.gmail.com> References: <20150111160356.GG46805@cicely7.cicely.de> <CAJ-VmonBXSPjP7CZ7JyJ4qYc6QwkM4r6=eK4snjSBoD3eu8e5g@mail.gmail.com>
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On Sun, Jan 11, 2015 at 10:16:49AM -0800, Adrian Chadd wrote: > Hi, > > I've had this issue reported by someone else - a tplink AR934x based > thing. I wonder if it's an updated uboot related thing. > > So the TL;DR is this. > > uboot "bootm" doesn't boot a kernel image - it boots a uboot > application. The application has a uboot header with details about > "where it should be unpacked", "where it should be executed", etc. The > tool that we're using is in ports but from an older uboot. It's > possible the header contents are now .. wrong. > > So, the flash address used by the "bootm" comand is 0x9f(blah), and > it'll unpack to wherever it says in the uboot header, and then execute > wherever it says. Everything above is wrong - Load, entry, size, etc - > and so that needs to be debugged. > > I have a tplink in a box that has the same issue, so I'll go see what > the story is. Great. My EL-M150 module has the same hynx memory chip as the carambola 2 I compared against, just the flash size ist different (winbond 25Q128 vs 25Q64). Don't know if the SPI flash is hardcoded somehow, otherwise the carambola 2 u-boot should work IMHO. Is there anything important in the flash, like calibration data, which can be trashed by tampering with it? Or failed parsing by a different u-boot version? Guess I should dump the SPI data to tftp server anyway. Never programmed a 25Q myself, but can't be too hard in case I brick it. -- B.Walter <bernd@bwct.de> http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
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