#121: flashrom runtime error

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coreboot

22 Jan 2009 22 Jan '09

1:08 a.m.

#121: flashrom runtime error ---------------------------------+------------------------------------------ Reporter: lymanrb@… | Owner: somebody Type: defect | Status: new Priority: major | Milestone: Component: flashrom | Version: Keywords: | Dependencies: Patchstatus: there is no patch | ---------------------------------+------------------------------------------ I got such errors when running flashrom. {{{ Calibrating delay loop... OK. Can't mmap memory using /dev/mem: Invalid argument }}}

My env {{{ Linux xxx 2.6.28-ARCH #1 SMP PREEMPT Sun Jan 18 19:41:52 UTC 2009 x86_64 Intel(R) Core(TM)2 Duo CPU T7250 @ 2.00GHz GenuineIntel GNU/Linux

core/pciutils 3.0.3-1 [installed] (base) PCI bus configuration space access library and tools core/zlib 1.2.3.3-3 [installed] (base) A compression/decompression Library

$ ./flashrom -R flashrom r3869 }}}

-- Ticket URL: http://tracker.coreboot.org/trac/coreboot/ticket/121 coreboot http://www.coreboot.org/

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coreboot

22 Jan 22 Jan

8:24 a.m.

New subject: #121: Failure to mmap /dev/mem needs a better error message (was: flashrom runtime error)

#121: Failure to mmap /dev/mem needs a better error message ---------------------------------+------------------------------------------ Reporter: lymanrb@… | Owner: stuge Type: enhancement | Status: assigned Priority: minor | Milestone: Component: flashrom | Version: Keywords: | Dependencies: Patchstatus: there is no patch | ---------------------------------+------------------------------------------ Changes (by stuge):

* owner: somebody => stuge * priority: major => minor * type: defect => enhancement * status: new => assigned

Comment:

This happens because CONFIG_NONPROMISC_DEVMEM (pre 2008-07), CONFIG_STRICT_DEVMEM or CONFIG_X86_PAT are set in your kernel.

Although flashrom can do nothing about any of these, I will add this information to the error message, so I'm not closing the ticket just yet.

-- Ticket URL: http://tracker.coreboot.org/trac/coreboot/ticket/121#comment:1 coreboot http://www.coreboot.org/

Paul Menzel

8:48 a.m.

New subject: #121: Failure to mmap /dev/mem needs a better error message (was: flashrom runtime error)

Dear Peter,

Am Donnerstag, den 22.01.2009, 16:24 +0000 schrieb coreboot:

...

This happens because CONFIG_NONPROMISC_DEVMEM (pre 2008-07), CONFIG_STRICT_DEVMEM or CONFIG_X86_PAT are set in your kernel.

Although flashrom can do nothing about any of these, I will add this information to the error message, so I'm not closing the ticket just yet.

There is an entry in the FAQ for this issue [1].

Thanks,

Paul

[1] http://www.coreboot.org/FAQ#Can.27t_mmap_memory_using_.2Fdev.2Fmem:_Invalid_...

Peter Stuge

8:52 a.m.

New subject: #121: Failure to mmap /dev/mem needs a better error message (was: flashrom runtime error)

Paul Menzel wrote:

...

...
Although flashrom can do nothing about any of these, I will add this information to the error message, so I'm not closing the ticket just yet.

There is an entry in the FAQ for this issue [1].

Thanks! Might include the URL in the error message then.

//Peter

Carl-Daniel Hailfinger

9:34 a.m.

New subject: #121: Failure to mmap /dev/mem needs a better error message

On 22.01.2009 17:52, Peter Stuge wrote:

...

Paul Menzel wrote:

...
...
Although flashrom can do nothing about any of these, I will add this information to the error message, so I'm not closing the ticket just yet.

There is an entry in the FAQ for this issue [1].

Thanks! Might include the URL in the error message then.

Any change which improves the error message (with an URL or a detailed explanation (preferred because it is usable if you have no internet connection)) is Acked-by: Carl-Daniel Hailfinger c-d.hailfinger.devel.2006@gmx.net

Regards, Carl-Daniel

-- http://www.hailfinger.org/

Niels Ole Salscheider

25 Jan 25 Jan

10:13 a.m.

New subject: #121: Failure to mmap /dev/mem needs a better error message (was: flashrom runtime error)

Hello,

...

This happens because CONFIG_NONPROMISC_DEVMEM (pre 2008-07), CONFIG_STRICT_DEVMEM or CONFIG_X86_PAT are set in your kernel.

Although flashrom can do nothing about any of these, I will add this information to the error message, so I'm not closing the ticket just yet.

I did not try it but this kernel patch may fix the issue with CONFIG_X86_PAT since flashrom tries to mmap the first MB in cbtable.c: http://bugzilla.kernel.org/show_bug.cgi?id=12372

Kind regards

Ole

coreboot

22 Jan 22 Jan

2:55 p.m.

New subject: #121: Failure to mmap /dev/mem needs a better error message

#121: Failure to mmap /dev/mem needs a better error message ----------------------------------+----------------------------------------- Reporter: lymanrb@… | Owner: stuge Type: enhancement | Status: closed Priority: minor | Milestone: Component: flashrom | Version: Resolution: fixed | Keywords: Dependencies: | Patchstatus: there is no patch ----------------------------------+----------------------------------------- Changes (by stuge):

* status: assigned => closed * resolution: => fixed

Comment:

More info in error message added in r3889.

-- Ticket URL: http://tracker.coreboot.org/trac/coreboot/ticket/121#comment:2 coreboot http://www.coreboot.org/

coreboot

8:30 p.m.

New subject: #121: Failure to mmap /dev/mem needs a better error message

Comment(by lymanrb@…):

I've seen the info you added in source code. However, I didn't get it printed when I recompile and run.

I debugged a little and found that the error occurred at line 193 of cbtable.c, the errno is 22. I'm not sure whether this helps.

-- Ticket URL: http://tracker.coreboot.org/trac/coreboot/ticket/121#comment:3 coreboot http://www.coreboot.org/

coreboot

9:24 p.m.

New subject: #121: Failure to mmap /dev/mem needs a better error message

Comment(by stuge):

Helps a lot! Sloppy me didn't catch all occurences of mmap().

Fixed in r3890. Thanks!

-- Ticket URL: http://tracker.coreboot.org/trac/coreboot/ticket/121#comment:4 coreboot http://www.coreboot.org/

coreboot

25 Jan 25 Jan

10:45 a.m.

New subject: #121: Failure to mmap /dev/mem needs a better error message

Comment(by stuge):

http://bugzilla.kernel.org/show_bug.cgi?id=12372 is possibly related to CONFIG_X86_PAT being problematic here, but no testing has been made to verify if that is the case. All test results most welcome. Thanks to Niels Ole Salscheider for pointing this out.

-- Ticket URL: http://tracker.coreboot.org/trac/coreboot/ticket/121#comment:5 coreboot http://www.coreboot.org/

coreboot

29 Aug 29 Aug

12:09 p.m.

New subject: #121: Failure to mmap /dev/mem needs a better error message

Comment(by dahuletam):

interesting stuff hope it works.

-- Ticket URL: http://tracker.coreboot.org/trac/coreboot/ticket/121#comment:6 coreboot http://www.coreboot.org/

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Carl-Daniel Hailfinger
coreboot
Niels Ole Salscheider
Paul Menzel
Peter Stuge