* [U-Boot] U-Boot 2012.10 - pxa270 CPU Unknown / no turbo
@ 2012-11-13 8:10 Andreas Puls
2012-11-13 13:52 ` Marek Vasut
0 siblings, 1 reply; 6+ messages in thread
From: Andreas Puls @ 2012-11-13 8:10 UTC (permalink / raw)
To: u-boot
Hi together,
i've got another problem with latest stable U-Boot-2012.10 and a Toradex Colibri PXA270 V2.4
Uboot dosen't regonized the CPU Revision
u-boot summary screen:
U-Boot 2012.10 (Nov 12 2012 - 14:22:12)
CPU: Marvell PXA27x rev. Unknown
first lines of dmesg:
[ 0.000000] CPU: XScale-PXA270 [69054118] revision 8 (ARMv5TE), cr=0000397f
[ 0.000000] CPU: VIVT data cache, VIVT instruction cache
[ 0.000000] Machine: Toradex Colibri PXA270
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] Run Mode clock: 208.00MHz (*16)
[ 0.000000] Turbo Mode clock: 520.00MHz (*2.5, inactive)
[ 0.000000] Memory clock: 104.00MHz (/2)
[ 0.000000] System bus clock: 104.00MHz
$ cat /proc/cpuinfo
Processor : XScale-PXA270 rev 8 (v5l)
BogoMIPS : 207.66
Features : swp half thumb fastmult edsp iwmmxt
CPU implementer : 0x69
CPU architecture: 5TE
CPU variant : 0x0
CPU part : 0x411
CPU revision : 8
Hardware : Toradex Colibri PXA270
Revision : 0000
Serial : 0000000000000000
With an old uboot from a third party vendor its working fine and the boot time is about half with the latest stable u-boot.
U-Boot 2010.06-dirty
CPU speed: 520000kHz; RCSR 00000001
first lines of dmesg:
[ 0.000000] CPU: XScale-PXA270 [69054118] revision 8 (ARMv5TE), cr=0000397f
[ 0.000000] CPU: VIVT data cache, VIVT instruction cache
[ 0.000000] Machine: Toradex Colibri PXA270
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] Run Mode clock: 208.00MHz (*16)
[ 0.000000] Turbo Mode clock: 520.00MHz (*2.5, active)
[ 0.000000] Memory clock: 208.00MHz (/2)
[ 0.000000] System bus clock: 208.00MHz
$ cat /proc/cpuinfo
Processor : XScale-PXA270 rev 8 (v5l)
BogoMIPS : 519.37
Features : swp half thumb fastmult edsp iwmmxt
CPU implementer : 0x69
CPU architecture: 5TE
CPU variant : 0x0
CPU part : 0x411
CPU revision : 8
Hardware : Toradex Colibri PXA270
Revision : 0000
Serial : 00003600602d1400
Uboot-2012.10 was compiled with stock files and no modification.
Kind regards
Andreas
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] U-Boot 2012.10 - pxa270 CPU Unknown / no turbo
2012-11-13 8:10 [U-Boot] U-Boot 2012.10 - pxa270 CPU Unknown / no turbo Andreas Puls
@ 2012-11-13 13:52 ` Marek Vasut
2012-11-14 13:55 ` Andreas Puls
0 siblings, 1 reply; 6+ messages in thread
From: Marek Vasut @ 2012-11-13 13:52 UTC (permalink / raw)
To: u-boot
Dear Andreas Puls,
> Hi together,
>
> i've got another problem with latest stable U-Boot-2012.10 and a Toradex
> Colibri PXA270 V2.4
>
> Uboot dosen't regonized the CPU Revision
> u-boot summary screen:
>
> U-Boot 2012.10 (Nov 12 2012 - 14:22:12)
> CPU: Marvell PXA27x rev. Unknown
See arch/arm/cpu/pxa/cpuinfo.c , patch is welcome ... they probably rolled out
some new CPU version.
> first lines of dmesg:
> [ 0.000000] CPU: XScale-PXA270 [69054118] revision 8 (ARMv5TE),
> cr=0000397f [ 0.000000] CPU: VIVT data cache, VIVT instruction cache
> [ 0.000000] Machine: Toradex Colibri PXA270
> [ 0.000000] Memory policy: ECC disabled, Data cache writeback
> [ 0.000000] Run Mode clock: 208.00MHz (*16)
> [ 0.000000] Turbo Mode clock: 520.00MHz (*2.5, inactive)
> [ 0.000000] Memory clock: 104.00MHz (/2)
> [ 0.000000] System bus clock: 104.00MHz
Looks like you need to enable the "Turbo" bit, patch is welcome. See
arch/arm/cpu/pxa/start.S and arch/arm/cpu/pxa/pxa2xx.c
> $ cat /proc/cpuinfo
> Processor : XScale-PXA270 rev 8 (v5l)
> BogoMIPS : 207.66
> Features : swp half thumb fastmult edsp iwmmxt
> CPU implementer : 0x69
> CPU architecture: 5TE
> CPU variant : 0x0
> CPU part : 0x411
> CPU revision : 8
>
> Hardware : Toradex Colibri PXA270
> Revision : 0000
> Serial : 0000000000000000
>
>
>
> With an old uboot from a third party vendor its working fine and the boot
> time is about half with the latest stable u-boot.
>
> U-Boot 2010.06-dirty
> CPU speed: 520000kHz; RCSR 00000001
>
> first lines of dmesg:
> [ 0.000000] CPU: XScale-PXA270 [69054118] revision 8 (ARMv5TE),
> cr=0000397f [ 0.000000] CPU: VIVT data cache, VIVT instruction cache
> [ 0.000000] Machine: Toradex Colibri PXA270
> [ 0.000000] Memory policy: ECC disabled, Data cache writeback
> [ 0.000000] Run Mode clock: 208.00MHz (*16)
> [ 0.000000] Turbo Mode clock: 520.00MHz (*2.5, active)
> [ 0.000000] Memory clock: 208.00MHz (/2)
> [ 0.000000] System bus clock: 208.00MHz
>
> $ cat /proc/cpuinfo
> Processor : XScale-PXA270 rev 8 (v5l)
> BogoMIPS : 519.37
> Features : swp half thumb fastmult edsp iwmmxt
> CPU implementer : 0x69
> CPU architecture: 5TE
> CPU variant : 0x0
> CPU part : 0x411
> CPU revision : 8
>
> Hardware : Toradex Colibri PXA270
> Revision : 0000
> Serial : 00003600602d1400
>
>
> Uboot-2012.10 was compiled with stock files and no modification.
>
>
> Kind regards
> Andreas
Best regards,
Marek Vasut
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] U-Boot 2012.10 - pxa270 CPU Unknown / no turbo
2012-11-13 13:52 ` Marek Vasut
@ 2012-11-14 13:55 ` Andreas Puls
2012-11-14 14:45 ` Marek Vasut
0 siblings, 1 reply; 6+ messages in thread
From: Andreas Puls @ 2012-11-14 13:55 UTC (permalink / raw)
To: u-boot
Dear Marek Vasut,
> Dear Andreas Puls,
>
> > Hi together,
> >
> > i've got another problem with latest stable U-Boot-2012.10 and a Toradex
> > Colibri PXA270 V2.4
> >
> > Uboot dosen't regonized the CPU Revision
> > u-boot summary screen:
> >
> > U-Boot 2012.10 (Nov 12 2012 - 14:22:12)
> > CPU: Marvell PXA27x rev. Unknown
>
> See arch/arm/cpu/pxa/cpuinfo.c , patch is welcome ... they probably rolled
> out
> some new CPU version.
Yes, its a PXA270 M. There is a spec. update pdf from Marvel.
http://www.marvell.com/application-processors/pxa-family/assets/pxa_27x_spec_update.pdf - Table 2-3.
They changed the Stepping from A0...C5 to "PXA270M -- A1"
A colleague would support me to change this becouse i have no cloue about writing C Files.
So we would like ask you first if the right CPU Name should be shown in the summary screen which would be a rewrite of your function or only the right stepping with the old CPU Name would be enough ? (Damn it - hope you understand my Denglish)
> > first lines of dmesg:
> > [ 0.000000] CPU: XScale-PXA270 [69054118] revision 8 (ARMv5TE),
> > cr=0000397f [ 0.000000] CPU: VIVT data cache, VIVT instruction cache
> > [ 0.000000] Machine: Toradex Colibri PXA270
> > [ 0.000000] Memory policy: ECC disabled, Data cache writeback
> > [ 0.000000] Run Mode clock: 208.00MHz (*16)
> > [ 0.000000] Turbo Mode clock: 520.00MHz (*2.5, inactive)
> > [ 0.000000] Memory clock: 104.00MHz (/2)
> > [ 0.000000] System bus clock: 104.00MHz
>
> Looks like you need to enable the "Turbo" bit, patch is welcome. See
> arch/arm/cpu/pxa/start.S and arch/arm/cpu/pxa/pxa2xx.c
Thank you for the files where we can look up.
We will try.
> > $ cat /proc/cpuinfo
> > Processor : XScale-PXA270 rev 8 (v5l)
> > BogoMIPS : 207.66
> > Features : swp half thumb fastmult edsp iwmmxt
> > CPU implementer : 0x69
> > CPU architecture: 5TE
> > CPU variant : 0x0
> > CPU part : 0x411
> > CPU revision : 8
> >
> > Hardware : Toradex Colibri PXA270
> > Revision : 0000
> > Serial : 0000000000000000
> >
> > [...]
> > Kind regards
> > Andreas
>
> Best regards,
> Marek Vasut
Kind regards
Andreas
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] U-Boot 2012.10 - pxa270 CPU Unknown / no turbo
2012-11-14 13:55 ` Andreas Puls
@ 2012-11-14 14:45 ` Marek Vasut
2012-11-15 6:27 ` Andreas Puls
0 siblings, 1 reply; 6+ messages in thread
From: Marek Vasut @ 2012-11-14 14:45 UTC (permalink / raw)
To: u-boot
Dear Andreas Puls,
> Dear Marek Vasut,
>
> > Dear Andreas Puls,
> >
> > > Hi together,
> > >
> > > i've got another problem with latest stable U-Boot-2012.10 and a
> > > Toradex Colibri PXA270 V2.4
> > >
> > > Uboot dosen't regonized the CPU Revision
> > > u-boot summary screen:
> > >
> > > U-Boot 2012.10 (Nov 12 2012 - 14:22:12)
> > > CPU: Marvell PXA27x rev. Unknown
> >
> > See arch/arm/cpu/pxa/cpuinfo.c , patch is welcome ... they probably
> > rolled out
> > some new CPU version.
>
> Yes, its a PXA270 M. There is a spec. update pdf from Marvel.
> http://www.marvell.com/application-processors/pxa-family/assets/pxa_27x_spe
> c_update.pdf - Table 2-3.
>
> They changed the Stepping from A0...C5 to "PXA270M -- A1"
> A colleague would support me to change this becouse i have no cloue about
> writing C Files. So we would like ask you first if the right CPU Name
> should be shown in the summary screen which would be a rewrite of your
> function or only the right stepping with the old CPU Name would be enough
> ? (Damn it - hope you understand my Denglish)
Can the CPUs be distinguished in some deterministic way? If so, rewrite it, no
problem.
[...]
Best regards,
Marek Vasut
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] U-Boot 2012.10 - pxa270 CPU Unknown / no turbo
2012-11-14 14:45 ` Marek Vasut
@ 2012-11-15 6:27 ` Andreas Puls
2012-11-15 13:28 ` Marek Vasut
0 siblings, 1 reply; 6+ messages in thread
From: Andreas Puls @ 2012-11-15 6:27 UTC (permalink / raw)
To: u-boot
Dear Marek Vasut,
> Dear Andreas Puls,
>
> > Dear Marek Vasut,
> >
> > > Dear Andreas Puls,
> > >
> > > > Hi together,
> > > >
> > > > i've got another problem with latest stable U-Boot-2012.10 and a
> > > > Toradex Colibri PXA270 V2.4
> > > >
> > > > Uboot dosen't regonized the CPU Revision
> > > > u-boot summary screen:
> > > >
> > > > U-Boot 2012.10 (Nov 12 2012 - 14:22:12)
> > > > CPU: Marvell PXA27x rev. Unknown
> > >
> > > See arch/arm/cpu/pxa/cpuinfo.c , patch is welcome ... they probably
> > > rolled out
> > > some new CPU version.
> >
> > Yes, its a PXA270 M. There is a spec. update pdf from Marvel.
> >
> http://www.marvell.com/application-processors/pxa-family/assets/pxa_27x_spe
> > c_update.pdf - Table 2-3.
> >
> > They changed the Stepping from A0...C5 to "PXA270M -- A1"
> > A colleague would support me to change this becouse i have no cloue
> about
> > writing C Files. So we would like ask you first if the right CPU Name
> > should be shown in the summary screen which would be a rewrite of your
> > function or only the right stepping with the old CPU Name would be
> enough
> > ? (Damn it - hope you understand my Denglish)
>
> Can the CPUs be distinguished in some deterministic way? If so, rewrite
> it, no
> problem.
Both CPU types have the same basic CPU ID, only the 4 stepping bits (the
4 LSBs of the CPU ID) are different. So basically the existing functions
could be extended just to handle the new stepping code.
However, the naming scheme of the new CPU type according to the data
sheet is quite different than the older steppings.
Older PXA270 versions have the following CPU ID, wher the last hex digit
(the 4 LSBs) is the stepping code, e.g.:
CPU ID: 0x69054111, stepping code 1 --> PXA270 -- A1
The Marvell Spec Update Manual shows the new Stepping and CPU ID as follows:
CPU ID: 0x69054118, stepping code 8 --> PXA270M -- A1
So for stepping code 8 the revision name A1 is the same as for stepping
code 1, but the CPU base name has changed from PXA270 to PXA270M for the
new type.
So just extending the existing stepping decoding function would lead to
confusion since the existing code would print
PXA270 rev. A1
for bothe the oldest and the newest CPU type, where something like
PXA270M rev. A1
would be correct for stepping code 8. I'm not sure which would be the
best way to handle this situation and change the code accordingly.
> Best regards,
> Marek Vasut
Kind regards
Andreas
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] U-Boot 2012.10 - pxa270 CPU Unknown / no turbo
2012-11-15 6:27 ` Andreas Puls
@ 2012-11-15 13:28 ` Marek Vasut
0 siblings, 0 replies; 6+ messages in thread
From: Marek Vasut @ 2012-11-15 13:28 UTC (permalink / raw)
To: u-boot
Dear Andreas Puls,
> Dear Marek Vasut,
>
> > Dear Andreas Puls,
> >
> > > Dear Marek Vasut,
> > >
> > > > Dear Andreas Puls,
> > > >
> > > > > Hi together,
> > > > >
> > > > > i've got another problem with latest stable U-Boot-2012.10 and a
> > > > > Toradex Colibri PXA270 V2.4
> > > > >
> > > > > Uboot dosen't regonized the CPU Revision
> > > > > u-boot summary screen:
> > > > >
> > > > > U-Boot 2012.10 (Nov 12 2012 - 14:22:12)
> > > > > CPU: Marvell PXA27x rev. Unknown
> > > >
> > > > See arch/arm/cpu/pxa/cpuinfo.c , patch is welcome ... they probably
> > > > rolled out
> > > > some new CPU version.
> > >
> > > Yes, its a PXA270 M. There is a spec. update pdf from Marvel.
> >
> > http://www.marvell.com/application-processors/pxa-family/assets/pxa_27x_s
> > pe
> >
> > > c_update.pdf - Table 2-3.
> > >
> > > They changed the Stepping from A0...C5 to "PXA270M -- A1"
> > > A colleague would support me to change this becouse i have no cloue
> >
> > about
> >
> > > writing C Files. So we would like ask you first if the right CPU Name
> > > should be shown in the summary screen which would be a rewrite of your
> > > function or only the right stepping with the old CPU Name would be
> >
> > enough
> >
> > > ? (Damn it - hope you understand my Denglish)
> >
> > Can the CPUs be distinguished in some deterministic way? If so, rewrite
> > it, no
> > problem.
>
> Both CPU types have the same basic CPU ID, only the 4 stepping bits (the
> 4 LSBs of the CPU ID) are different. So basically the existing functions
> could be extended just to handle the new stepping code.
>
> However, the naming scheme of the new CPU type according to the data
> sheet is quite different than the older steppings.
>
> Older PXA270 versions have the following CPU ID, wher the last hex digit
> (the 4 LSBs) is the stepping code, e.g.:
>
> CPU ID: 0x69054111, stepping code 1 --> PXA270 -- A1
>
> The Marvell Spec Update Manual shows the new Stepping and CPU ID as
> follows:
>
> CPU ID: 0x69054118, stepping code 8 --> PXA270M -- A1
>
> So for stepping code 8 the revision name A1 is the same as for stepping
> code 1, but the CPU base name has changed from PXA270 to PXA270M for the
> new type.
>
> So just extending the existing stepping decoding function would lead to
> confusion since the existing code would print
>
> PXA270 rev. A1
>
> for bothe the oldest and the newest CPU type, where something like
>
> PXA270M rev. A1
>
> would be correct for stepping code 8. I'm not sure which would be the
> best way to handle this situation and change the code accordingly.
Try something, submit a patch, then we'll discuss it further above some code.
Let's stop theoreticizing now.
Best regards,
Marek Vasut
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2012-11-15 13:28 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-11-13 8:10 [U-Boot] U-Boot 2012.10 - pxa270 CPU Unknown / no turbo Andreas Puls
2012-11-13 13:52 ` Marek Vasut
2012-11-14 13:55 ` Andreas Puls
2012-11-14 14:45 ` Marek Vasut
2012-11-15 6:27 ` Andreas Puls
2012-11-15 13:28 ` Marek Vasut
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