* [U-Boot] u-boot <=> kernel compatibility? @ 2017-11-04 6:22 daggs 2017-11-04 18:37 ` Tom Rini 0 siblings, 1 reply; 8+ messages in thread From: daggs @ 2017-11-04 6:22 UTC (permalink / raw) To: u-boot Greetings, is there a minimum kernel version limitation on the latest release of u-boot? the reason I'm asking is that I'm unable to boot a arm board with latest u-boot and the vendor's kernel which is based on kernel 3.14.x Thanks, Dagg. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [U-Boot] u-boot <=> kernel compatibility? 2017-11-04 6:22 [U-Boot] u-boot <=> kernel compatibility? daggs @ 2017-11-04 18:37 ` Tom Rini 2017-11-05 5:08 ` Chris Moore 2017-11-05 8:16 ` daggs 0 siblings, 2 replies; 8+ messages in thread From: Tom Rini @ 2017-11-04 18:37 UTC (permalink / raw) To: u-boot On Sat, Nov 04, 2017 at 07:22:06AM +0100, daggs wrote: > Greetings, > > is there a minimum kernel version limitation on the latest release of > u-boot? the reason I'm asking is that I'm unable to boot a arm board > with latest u-boot and the vendor's kernel which is based on kernel > 3.14.x > There is generally not, but what is your actual error? Thanks! -- Tom -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: not available URL: <http://lists.denx.de/pipermail/u-boot/attachments/20171104/0a49806e/attachment.sig> ^ permalink raw reply [flat|nested] 8+ messages in thread
* [U-Boot] u-boot <=> kernel compatibility? 2017-11-04 18:37 ` Tom Rini @ 2017-11-05 5:08 ` Chris Moore 2017-11-05 8:18 ` daggs 2017-11-05 8:16 ` daggs 1 sibling, 1 reply; 8+ messages in thread From: Chris Moore @ 2017-11-05 5:08 UTC (permalink / raw) To: u-boot Hi, Le 04/11/2017 à 19:37, Tom Rini a écrit : > On Sat, Nov 04, 2017 at 07:22:06AM +0100, daggs wrote: >> Greetings, is there a minimum kernel version limitation on the latest >> release of u-boot? the reason I'm asking is that I'm unable to boot a >> arm board with latest u-boot and the vendor's kernel which is based >> on kernel 3.14.x > There is generally not, but what is your actual error? Thanks! I *guess* that the vendor's U-Boot performs some initializations missing from mainline U-Boot but necessary for the vendor's kernel to boot. Cheers, Chris ^ permalink raw reply [flat|nested] 8+ messages in thread
* [U-Boot] u-boot <=> kernel compatibility? 2017-11-05 5:08 ` Chris Moore @ 2017-11-05 8:18 ` daggs 0 siblings, 0 replies; 8+ messages in thread From: daggs @ 2017-11-05 8:18 UTC (permalink / raw) To: u-boot Greetings Chris, > Hi, > > Le 04/11/2017 à 19:37, Tom Rini a écrit : > > On Sat, Nov 04, 2017 at 07:22:06AM +0100, daggs wrote: > >> Greetings, is there a minimum kernel version limitation on the latest > >> release of u-boot? the reason I'm asking is that I'm unable to boot a > >> arm board with latest u-boot and the vendor's kernel which is based > >> on kernel 3.14.x > > There is generally not, but what is your actual error? Thanks! > > I *guess* that the vendor's U-Boot performs some initializations missing > from mainline U-Boot but necessary for the vendor's kernel to boot. > I can confirm that kernel 4.12.x boots with 2017.07. because there is such a big difference between the versions I thought maybe it is a kernel diff. I didn't tried to boot kernel 4.12.x with the vendor's uboot however, I might try it next. thanks for the idea. Dagg. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [U-Boot] u-boot <=> kernel compatibility? 2017-11-04 18:37 ` Tom Rini 2017-11-05 5:08 ` Chris Moore @ 2017-11-05 8:16 ` daggs 2017-11-08 8:11 ` daggs 1 sibling, 1 reply; 8+ messages in thread From: daggs @ 2017-11-05 8:16 UTC (permalink / raw) To: u-boot Greetings Tom, > Sent: Saturday, November 04, 2017 at 8:37 PM > From: "Tom Rini" <trini@konsulko.com> > To: daggs <daggs@gmx.com> > Cc: u-boot at lists.denx.de > Subject: Re: [U-Boot] u-boot <=> kernel compatibility? > > On Sat, Nov 04, 2017 at 07:22:06AM +0100, daggs wrote: > > > Greetings, > > > > is there a minimum kernel version limitation on the latest release of > > u-boot? the reason I'm asking is that I'm unable to boot a arm board > > with latest u-boot and the vendor's kernel which is based on kernel > > 3.14.x > > > > There is generally not, but what is your actual error? Thanks! > the last print I see is Starting kernel ... using prints I was able to trace the call to armv8_switch_to_el2, if I'm not mistaken, this is a asm code in the kernel I'm trying to boot, am I wrong? Thanks, Dagg. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [U-Boot] u-boot <=> kernel compatibility? 2017-11-05 8:16 ` daggs @ 2017-11-08 8:11 ` daggs 2017-11-08 10:21 ` Chris Moore 0 siblings, 1 reply; 8+ messages in thread From: daggs @ 2017-11-08 8:11 UTC (permalink / raw) To: u-boot > Greetings Tom, > > > Sent: Saturday, November 04, 2017 at 8:37 PM > > From: "Tom Rini" <trini@konsulko.com> > > To: daggs <daggs@gmx.com> > > Cc: u-boot at lists.denx.de > > Subject: Re: [U-Boot] u-boot <=> kernel compatibility? > > > > On Sat, Nov 04, 2017 at 07:22:06AM +0100, daggs wrote: > > > > > Greetings, > > > > > > is there a minimum kernel version limitation on the latest release of > > > u-boot? the reason I'm asking is that I'm unable to boot a arm board > > > with latest u-boot and the vendor's kernel which is based on kernel > > > 3.14.x > > > > > > > There is generally not, but what is your actual error? Thanks! > > > > the last print I see is Starting kernel ... > using prints I was able to trace the call to armv8_switch_to_el2, if I'm not mistaken, this is a asm code in the kernel I'm trying to boot, am I wrong? > > Thanks, > > Dagg. Tom, am I right in the assumption above? Dagg. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [U-Boot] u-boot <=> kernel compatibility? 2017-11-08 8:11 ` daggs @ 2017-11-08 10:21 ` Chris Moore 2017-11-09 9:18 ` daggs 0 siblings, 1 reply; 8+ messages in thread From: Chris Moore @ 2017-11-08 10:21 UTC (permalink / raw) To: u-boot Hi, Le 08/11/2017 à 09:11, daggs a écrit : >> Greetings Tom, >> >>> Sent: Saturday, November 04, 2017 at 8:37 PM >>> From: "Tom Rini" <trini@konsulko.com> >>> To: daggs <daggs@gmx.com> >>> Cc: u-boot at lists.denx.de >>> Subject: Re: [U-Boot] u-boot <=> kernel compatibility? >>> >>> On Sat, Nov 04, 2017 at 07:22:06AM +0100, daggs wrote: >>> >>>> Greetings, >>>> >>>> is there a minimum kernel version limitation on the latest release of >>>> u-boot? the reason I'm asking is that I'm unable to boot a arm board >>>> with latest u-boot and the vendor's kernel which is based on kernel >>>> 3.14.x >>>> >>> There is generally not, but what is your actual error? Thanks! >>> >> the last print I see is Starting kernel ... >> using prints I was able to trace the call to armv8_switch_to_el2, if I'm not mistaken, this is a asm code in the kernel I'm trying to boot, am I wrong? >> >> Thanks, >> >> Dagg. > Tom, am I right in the assumption above? > > Dagg. I am neither Tom nor a U-Boot expert but *think* "Starting kernel ..." comes from U-Boot, not the kernel. Cheers, Chris ^ permalink raw reply [flat|nested] 8+ messages in thread
* [U-Boot] u-boot <=> kernel compatibility? 2017-11-08 10:21 ` Chris Moore @ 2017-11-09 9:18 ` daggs 0 siblings, 0 replies; 8+ messages in thread From: daggs @ 2017-11-09 9:18 UTC (permalink / raw) To: u-boot Greetings Chris, > Sent: Wednesday, November 08, 2017 at 12:21 PM > From: "Chris Moore" <moore@free.fr> > To: daggs <daggs@gmx.com>, "Tom Rini" <trini@konsulko.com> > Cc: u-boot at lists.denx.de > Subject: Re: [U-Boot] u-boot <=> kernel compatibility? > > Hi, > > Le 08/11/2017 à 09:11, daggs a écrit : > >> Greetings Tom, > >> > >>> Sent: Saturday, November 04, 2017 at 8:37 PM > >>> From: "Tom Rini" <trini@konsulko.com> > >>> To: daggs <daggs@gmx.com> > >>> Cc: u-boot at lists.denx.de > >>> Subject: Re: [U-Boot] u-boot <=> kernel compatibility? > >>> > >>> On Sat, Nov 04, 2017 at 07:22:06AM +0100, daggs wrote: > >>> > >>>> Greetings, > >>>> > >>>> is there a minimum kernel version limitation on the latest release of > >>>> u-boot? the reason I'm asking is that I'm unable to boot a arm board > >>>> with latest u-boot and the vendor's kernel which is based on kernel > >>>> 3.14.x > >>>> > >>> There is generally not, but what is your actual error? Thanks! > >>> > >> the last print I see is Starting kernel ... > >> using prints I was able to trace the call to armv8_switch_to_el2, if I'm not mistaken, this is a asm code in the kernel I'm trying to boot, am I wrong? > >> > >> Thanks, > >> > >> Dagg. > > Tom, am I right in the assumption above? > > > > Dagg. > > I am neither Tom nor a U-Boot expert but *think* "Starting kernel ..." > comes from U-Boot, not the kernel. > > Cheers, > Chris > that is correct, the actual print comes from u-boot but after the print u-boot preforms additional code that ends up in calling armv8_switch_to_el2. I assume that armv8_switch_to_el2 is defined in kernel, am I correct? Thanks, Dagg. ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2017-11-09 9:18 UTC | newest] Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2017-11-04 6:22 [U-Boot] u-boot <=> kernel compatibility? daggs 2017-11-04 18:37 ` Tom Rini 2017-11-05 5:08 ` Chris Moore 2017-11-05 8:18 ` daggs 2017-11-05 8:16 ` daggs 2017-11-08 8:11 ` daggs 2017-11-08 10:21 ` Chris Moore 2017-11-09 9:18 ` daggs
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