From mboxrd@z Thu Jan 1 00:00:00 1970 From: cgagneraud@techworks.ie (Christian Gagneraud) Date: Mon, 05 Oct 2009 19:34:30 +0100 Subject: [PATCH v1.0 2/4] TS72XX: Allow to override machine ID In-Reply-To: <200910051801.22974.marek.vasut@gmail.com> References: <20091004011413.12578.89897.stgit@localhost.localdomain> <4AC9E3CE.2030307@techworks.ie> <19146.3499.156615.1713@pilspetsen.it.uu.se> <200910051801.22974.marek.vasut@gmail.com> Message-ID: <4ACA3C36.30706@techworks.ie> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Marek Vasut wrote: > Dne Po 5. ??jna 2009 17:15:55 Mikael Pettersson napsal(a): >> Christian Gagneraud writes: >> > H Hartley Sweeten wrote: >> > > On Saturday, October 03, 2009 6:14 PM, Christian Gagneraud wrote: >> > >> From: Matthieu Crapet >> > >> >> > >> In early days Technologic Systems fixed the 0x163 value in redboot >> > >> instead of 0x2a1, this patch allow to overwrite it. >> > >> >> > >> Signed-off-by: Matthieu Crapet >> > >> Signed-off-by: Christian Gagneraud >> > > >> > > As others have already pointed out, this is a pure hack and not >> > > suitable for mainline. >> > > >> > > The bootloader for systems that needs this really should be updated. >> > > Machine ID 0x163 (355) is ARCH_CX861XX which isn't an ep93xx based >> > > system and doesn't even have a platform init in mainline. >> > >> > I see your point, but what if the bootloader can't be updated? Does >> > that mean that people using these boards will have to bother with >> > applying patches on mainline kernel for ever? >> > Can't we find a way to address this issue, I'm pretty sure this is not >> > the only board that need this kind of asm hack. >> >> All you need to do is to wrap the kernel binary image with >> a small shim that corrects the Machine ID in r1. devio can >> do that, as can (I think) printf(1). >> >> No need to replace the bootloader or hack the kernel. > > devio 'wl 0xe59f1000,4' 'wl 0xe28ff004,4' 'wl $MACH,4' >> id.bin > cat id.bin zImage > zImage.crippled Thank you for the tip, i will have a look at this. Regards, Chris > > Like this (I used this on Toradex board where those morons fixed machine id too). >> _______________________________________________ >> linux-arm-kernel mailing list >> linux-arm-kernel at lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel >>