No subject
Tue Aug 19 22:18:26 CEST 2008
Thanks & Regards,
Rakesh Jagota
----- Original Message -----
From: <u-boot-users-request at lists.sourceforge.net>
To: <u-boot-users at lists.sourceforge.net>
Sent: Tuesday, July 13, 2004 5:49 AM
Subject: U-Boot-Users digest, Vol 1 #861 - 14 msgs
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> Today's Topics:
>
> 1. Re: More 8540/8560 ADS Patches Soon (Jon Loeliger)
> 2. ppc4xx/serial.c (=?iso-8859-1?Q?Seingier_Fran=E7ois-Xavier?=)
> 3. RE: [u-boot-users]: Relocation code on Nios (Scott McNutt)
> 4. Debugging U-Boot Under DDD (Talib Alim)
> 5. Re: Debugging U-Boot Under DDD (Wolfgang Denk)
> 6. Re: Debugging U-Boot Under DDD (Matthew McClintock)
> 7. RE: Debugging U-Boot Under DDD (VanBaren, Gerald (AGRE))
> 8. Re: Debugging U-Boot Under DDD (Talib Alim)
> 9. Re: Debugging U-Boot Under DDD (Wolfgang Denk)
> 10. Help with serial port set-up for PPC 8540 (Junita Ajith)
> 11. Errant Tab in drivers/cfi_flash.c (Michael Bendzick)
> 12. Re: Help with serial port set-up for PPC 8540 (Wolfgang Denk)
> 13. Re: Errant Tab in drivers/cfi_flash.c (Wolfgang Denk)
> 14. Re: Debugging U-Boot Under DDD (Talib Alim)
>
> --__--__--
>
> Message: 1
> Subject: Re: [U-Boot-Users] More 8540/8560 ADS Patches Soon
> From: Jon Loeliger <jdl at freescale.com>
> To: u-boot-users <u-boot-users at lists.sourceforge.net>
> Organization:
> Date: 12 Jul 2004 11:20:42 -0500
>
>
> On Sun, 2004-07-11 at 17:26, Wolfgang Denk wrote:
> >
> > I reject the following parts:
> >
> > cpu/mpc85xx/spd_sdram.c:
> >
> > ...
> >
> > All the rest: added & checked in.
>
> Cool. Thanks.
>
> > ...
> >
> > Please feel free to go on now.
>
> Will do. No problem about the spd_sdram.c as essentially
> the entire purpose of the next patch is to improve large
> portions of that code.
>
> Thanks,
> jdl
>
>
>
> --__--__--
>
> Message: 2
> Date: Mon, 12 Jul 2004 18:23:16 +0200
> From: =?iso-8859-1?Q?Seingier_Fran=E7ois-Xavier?=
<Francois-Xavier.Seingier at thomson.net>
> To: "U-Boot-Users \(E-mail\)" <u-boot-users at lists.sourceforge.net>
> Subject: [U-Boot-Users] ppc4xx/serial.c
>
> hello,
> I've been going through the code of the function serial_init because I =
> couldn't get the proper baudrate divisor. I must admit I don't =
> understand the operations made to calculate udiv and bdiv... According =
> to the 405gp user manual, these are the meanings of a few parameters.
>
> CFG_BASE_BAUD =3D SerClk / 16
>
> bdiv =3D SerClk / (16 * baudrate)
>
> SerClk =3D cpu_freq / udiv
>
>
>
> As a result, udiv and bdiv should be generated as follows in =
> serail_init:
>
> if external_clock:
>
> SerClk =3D CFG_EXT_SERIAL_CLK
> udiv =3D 1
>
> else:
>
> SerClk =3D CFG_BASE_BAUD * 16
> udiv =3D cpu_freq / serClk
>
> endif
>
> bdiv =3D SerClk / (16 * baudrate)
>
> Am I missing something?
>
> regards,
>
> Fran=E7ois-Xavier SEINGIER
>
>
> --__--__--
>
> Message: 3
> From: Scott McNutt <ScottM at orbacom.com>
> To: u-boot-users at lists.sourceforge.net
> Date: Mon, 12 Jul 2004 13:01:26 -0400
> Subject: [U-Boot-Users] RE: [u-boot-users]: Relocation code on Nios
>
>
> >> I don"t understand this particular line of code:
> >>
> >> ld %g7, [%g7]
>
> This moves the value pointed to by %g7 into register
> %g7. %g7 points to the location that stores the address
> of _start. This is the address where u-boot is to be
> copied (the destination address).
>
> >> Per my understanding, %g7 keeps the return address.
> >> This address should point to the next instruction
> >> of code just after the delay slot of CALL or BSR
> >> used to call u-boot.
>
> Yes, you are correct. %g7 points to where the (link time)
> address of _start is stored (not the current execution
> address of _start).
>
> >> later this value (instruction bytes) is compared with
> >> %g5 that keeps the end of data segment according to
> >> u-boot.lds. I can"t understand why code address is
> >> being compared with instruction bytes. Please
> >> explain if possible - what does [%g7] keep and where
> >> am I wrong?
>
> This just lets you store u-boot in memory at any address.
> When you being execution, the code is simply copied to
> TEXT_BASE, that's all. This initial bsr just lets us
> know where we begin execution, the value in %g7 after
> the bsr is the target address plus 4.
>
> Currently, for convenience and simplicity, the u-boot
> code, data, and command table are currently located
> contiguously.
>
> There's no magic here ... just load the binary to
> some arbitrary address, then single step through the
> code -- it'll help you understand :-)
>
> Best Regards,
> --Scott
>
>
>
> --__--__--
>
> Message: 4
> Date: Mon, 12 Jul 2004 12:08:24 -0700 (PDT)
> From: Talib Alim <talibalm at hotmail.com>
> Reply-To: talibalm at hotmail.com
> To: U-Boot List <u-boot-users at lists.sourceforge.net>
> Subject: [U-Boot-Users] Debugging U-Boot Under DDD
>
> This may be a trivial question, but I hope that someone can answer me.
> I am bring up u-boot on 8xx.
>
> While doing source level debugging under ddd, whenever I do step,
> stepi, next or nexti I see green instruction pointer jump all over the
> code. e.g. it would go to first line, than third line, than 7 line. If
> I look at machine code window, it is running in normal predictable way.
>
>
> --__--__--
>
> Message: 5
> To: talibalm at hotmail.com
> Cc: U-Boot List <u-boot-users at lists.sourceforge.net>
> Subject: Re: [U-Boot-Users] Debugging U-Boot Under DDD
> From: Wolfgang Denk <wd at denx.de>
> Date: Mon, 12 Jul 2004 21:17:58 +0200
>
> In message <20040712190824.57774.qmail at web50510.mail.yahoo.com> you wrote=
> :
> > This may be a trivial question, but I hope that someone can answer me.
>
> It's not a trivial question, but a FAQ.
>
> > While doing source level debugging under ddd, whenever I do step,
> > stepi, next or nexti I see green instruction pointer jump all over the
> > code. e.g. it would go to first line, than third line, than 7 line. If
> > I look at machine code window, it is running in normal predictable way.
>
> See http://www.denx.de/twiki/bin/view/DULG/DebuggingTricks
>
> Best regards,
>
> Wolfgang Denk
>
> --=20
> Software Engineering: Embedded and Realtime Systems, Embedded Linux
> Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
> When it is incorrect, it is, at least *authoritatively* incorrect.
> - Hitchiker's Guide To The Galaxy
>
>
> --__--__--
>
> Message: 6
> Subject: Re: [U-Boot-Users] Debugging U-Boot Under DDD
> From: Matthew McClintock <mcclintock at freescale.com>
> Reply-To: mcclintock at freescale.com
> To: talibalm at hotmail.com
> Cc: U-Boot List <u-boot-users at lists.sourceforge.net>
> Date: Mon, 12 Jul 2004 14:18:08 +0000
>
> See: http://www.denx.de/twiki/bin/view/DULG/DebuggingTricks
>
> Matthew
>
> On Mon, 2004-07-12 at 19:08, Talib Alim wrote:
> > This may be a trivial question, but I hope that someone can answer me.
> > I am bring up u-boot on 8xx.
> >
> > While doing source level debugging under ddd, whenever I do step,
> > stepi, next or nexti I see green instruction pointer jump all over the
> > code. e.g. it would go to first line, than third line, than 7 line. If
> > I look at machine code window, it is running in normal predictable way.
> >
> >
> > -------------------------------------------------------
> > This SF.Net email sponsored by Black Hat Briefings & Training.
> > Attend Black Hat Briefings & Training, Las Vegas July 24-29 -
> > digital self defense, top technical experts, no vendor pitches,
> > unmatched networking opportunities. Visit www.blackhat.com
> > _______________________________________________
> > U-Boot-Users mailing list
> > U-Boot-Users at lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/u-boot-users
> --
> Matthew McClintock <mcclintock at freescale.com>
>
>
>
> --__--__--
>
> Message: 7
> Subject: RE: [U-Boot-Users] Debugging U-Boot Under DDD
> Date: Mon, 12 Jul 2004 13:21:43 -0600
> From: "VanBaren, Gerald (AGRE)" <Gerald.VanBaren at smiths-aerospace.com>
> To: "U-Boot List" <u-boot-users at lists.sourceforge.net>
>
>
> > -----Original Message-----
> > From: u-boot-users-admin at lists.sourceforge.net
> > [mailto:u-boot-users-admin at lists.sourceforge.net]On Behalf Of=0D
> > Talib Alim
> > Sent: Monday, July 12, 2004 3:08 PM
> > To: U-Boot List
> > Subject: [U-Boot-Users] Debugging U-Boot Under DDD
> >=0D
> >=0D
> > This may be a trivial question, but I hope that someone can answer me.
> > I am bring up u-boot on 8xx.
> >=0D
> > While doing source level debugging under ddd, whenever I do step,
> > stepi, next or nexti I see green instruction pointer jump all over the
> > code. e.g. it would go to first line, than third line, than 7 line. If
> > I look at machine code window, it is running in normal=0D
> > predictable way.
>
>
> That is typically because the compiler optimizer has re-ordered your=
> program. ddd is showing you which line is being executed and the
machine=
> code window shows sequential instructions, but those instructions are=
> _not_ for sequential source lines.
>
> gvb
>
>
>
>
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>
>
> --__--__--
>
> Message: 8
> Date: Mon, 12 Jul 2004 12:43:03 -0700 (PDT)
> From: Talib Alim <talibalm at hotmail.com>
> Reply-To: talibalm at hotmail.com
> Subject: Re: [U-Boot-Users] Debugging U-Boot Under DDD
> To: Wolfgang Denk <wd at denx.de>, talibalm at hotmail.com
> Cc: U-Boot List <u-boot-users at lists.sourceforge.net>
>
> Thanks for the link.
>
> I have debugged u-boot to a point, it has relocated code, setup
> execptions / interrrupts etc and in main_loop().
>
> At this point if I "Cont", I get pop-up from ddd
>
> /.../u-boot-1.1.1/serial.c: No such file or directory.
>
> There are 23 serial.c files in the tree. Those possibly relavent to me
> are
>
> ./cpu/mpc8xx/serial.c
> ./tools/gdb/serial.c
> ./drivers/serial.c
>
> Just before relocating the code, I typed following statements
>
> (gdb) symbol-file
> (gdb) add-symbol-file u-boot 0xbda000
> (gdb) dir cpu/mpc8xx
> (gdb) dir board/fads
> (gdb) dir tools/gdb/serial.c
> (gdb) dir drivers/serial.c
>
> Well, my question is why I am getting "No such file or directory" from
> ddd and how can I fix this problem.
>
> Usman
>
> --- Wolfgang Denk <wd at denx.de> wrote:
> > In message <20040712190824.57774.qmail at web50510.mail.yahoo.com> you
> > wrote:
> > > This may be a trivial question, but I hope that someone can answer
> > > me.
> >
> > It's not a trivial question, but a FAQ.
> >
> > > While doing source level debugging under ddd, whenever I do step,
> > > stepi, next or nexti I see green instruction pointer jump all over
> > > the code. e.g. it would go to first line, than third line, than 7
> > > line. If I look at machine code window, it is running in normal
> > > predictable way.
> >
> > See http://www.denx.de/twiki/bin/view/DULG/DebuggingTricks
> >
> > Best regards,
> >
> > Wolfgang Denk
> >
> > --
> > Software Engineering: Embedded and Realtime Systems, Embedded
> > Linux
> > Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email:
> > wd at denx.de
> > When it is incorrect, it is, at least *authoritatively* incorrect.
> > - Hitchiker's Guide To The
> > Galaxy
>
>
> --__--__--
>
> Message: 9
> To: talibalm at hotmail.com
> Cc: U-Boot List <u-boot-users at lists.sourceforge.net>
> Subject: Re: [U-Boot-Users] Debugging U-Boot Under DDD
> From: Wolfgang Denk <wd at denx.de>
> Date: Mon, 12 Jul 2004 21:59:33 +0200
>
> In message <20040712194303.3117.qmail at web50504.mail.yahoo.com> you wrote:
> >=20
> > At this point if I "Cont", I get pop-up from ddd
> > /.../u-boot-1.1.1/serial.c: No such file or directory.
>
> Sounds like a toolchain or user problem to me.
>
> > Just before relocating the code, I typed following statements
> >=20
> > (gdb) symbol-file
> > (gdb) add-symbol-file u-boot 0xbda000
>
> How did you start gdb / DDD? Did you really load "u-boot" (i. e. the
> ELF file)?
>
> > (gdb) dir cpu/mpc8xx
> > (gdb) dir board/fads
> > (gdb) dir tools/gdb/serial.c
> > (gdb) dir drivers/serial.c
>
> None of these should be necessary. Which toolchain are you using?
>
>
> Best regards,
>
> Wolfgang Denk
>
> --=20
> Software Engineering: Embedded and Realtime Systems, Embedded Linux
> Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
> Old programmers never die, they just become managers.
>
>
> --__--__--
>
> Message: 10
> Date: Mon, 12 Jul 2004 14:29:57 -0700 (PDT)
> From: Junita Ajith <junita_ppc at yahoo.com>
> To: u-boot-users at lists.sourceforge.net
> Subject: [U-Boot-Users] Help with serial port set-up for PPC 8540
>
> Hi
> I am trying to write an Assembly code , just to
> set-up the UART , so as to send a few characters via
> the serial port.
>
> I am working on a 8540 Motorola PowerPC . As I am
> starting right from the scratch I dont have the boot
> -loader doing the board initializations for me and so
> have to have my own start.S file to do those .
>
> I just have set-up the necessary registers for
> UART and as I am not doing any high level coding I
> havent set up the MMU , TLB etc. But my code doesnt
> seem to work !!!
>
> I assumed that that CPU would direclty read from
> the Flash .I am new to this and so I need some advise
> of what all have to be done during board bring up, or
> where should I look for such documentation.
>
> Any help would be appreciated .
>
> Thanks
> Junita
>
>
>
> __________________________________
> Do you Yahoo!?
> Take Yahoo! Mail with you! Get it on your mobile phone.
> http://mobile.yahoo.com/maildemo
>
>
> --__--__--
>
> Message: 11
> From: Michael Bendzick <michaelb at logicpd.com>
> To: "'u-boot-users at lists.sourceforge.net'"
> <u-boot-users at lists.sourceforge.net>
> Date: Mon, 12 Jul 2004 16:59:45 -0500
> Subject: [U-Boot-Users] Errant Tab in drivers/cfi_flash.c
>
> I noticed in the drivers/cfi_flash.c file, there's a minor error in text
> formatting that makes for an ugly display when running 'flinfo'.
>
> I tracked it down to line 465, where either "(RO)" or blank space is
> displayed, depending on the sector status. An errant tab is in there that
> looked like the two spaces that ought to be there, which caused my
terminal
> program (Tera Term) to make the spacing between numbered sectors
excessively
> wide, and also cause a blank line between every data-bearing line.
>
> The fix (note that I'm using [tab] and [space] here for clarity):
>
> Line 465...
>
> info->start[i], info->protect[i] ? "[space](RO)" :
> "[tab][space][space][space]");
>
> ...should become...
>
> info->start[i], info->protect[i] ? "[space](RO)" :
> "[space][space][space][space][space]");
>
> -Michael Bendzick
> Systems and Software Engineering
> Logic Product Development
> michael.b at logicpd.com
> 612-436-5122
> www.logicpd.com
>
>
>
> --__--__--
>
> Message: 12
> To: Junita Ajith <junita_ppc at yahoo.com>
> Cc: u-boot-users at lists.sourceforge.net
> Subject: Re: [U-Boot-Users] Help with serial port set-up for PPC 8540
> From: Wolfgang Denk <wd at denx.de>
> Date: Tue, 13 Jul 2004 00:30:31 +0200
>
> In message <20040712212957.88820.qmail at web90006.mail.scd.yahoo.com> you w=
> rote:
> >
> > I am trying to write an Assembly code , just to
> > set-up the UART , so as to send a few characters via
> > the serial port.
>
> Why? There is a full-blown serial driver available written in C? Is
> this intended as a replacement for a missing BDI2000? Save your time,
> abd buy the BDI2000 _now_. Other wise your time is just wasted, as
> you will buy the BDI2000 later anyway.
>
> > I just have set-up the necessary registers for
> > UART and as I am not doing any high level coding I
> > havent set up the MMU , TLB etc. But my code doesnt
> > seem to work !!!
>
> Forget it. U-Boot was explicitely designed to bring up a serial
> console port as early as possible during initialization. OK, there
> are a few things that could be saved before running the serial
> driver, but this is just a tiny piece of the code you need to get
> right before you will see the first character on the serial line.
>
> Don't try to re-invent the wheel.
>
> > I assumed that that CPU would direclty read from
> > the Flash .I am new to this and so I need some advise
> > of what all have to be done during board bring up, or
> > where should I look for such documentation.
>
> Use the existing U-Boot code. Attach a BDI2000 and just type "ti" at
> the telnet prompt, or "d/i $pc" + "si" in GDB...
>
> Best regards,
>
> Wolfgang Denk
>
> --=20
> Software Engineering: Embedded and Realtime Systems, Embedded Linux
> Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
> "The good Christian should beware of mathematicians and all those who
> make empty prophecies. The danger already exists that mathematicians
> have made a covenant with the devil to darken the spirit and confine
> man in the bonds of Hell." - Saint Augustine
>
>
> --__--__--
>
> Message: 13
> To: Michael Bendzick <michaelb at logicpd.com>
> Cc: "'u-boot-users at lists.sourceforge.net'"
<u-boot-users at lists.sourceforge.net>
> Subject: Re: [U-Boot-Users] Errant Tab in drivers/cfi_flash.c
> From: Wolfgang Denk <wd at denx.de>
> Date: Tue, 13 Jul 2004 00:35:55 +0200
>
> In message <31ADFA827355984B9E2A161514595B561C32C0 at lpdsrv04.logicpd.com> =
> you wrote:
> > I noticed in the drivers/cfi_flash.c file, there's a minor error in tex=
> t
> > formatting that makes for an ugly display when running 'flinfo'.
>
> Thanks for pointing out (mea culpa).
>
> > The fix (note that I'm using [tab] and [space] here for clarity):
>
> It would have been much more useful (and less work for me) if you had
> just included a patch (see README for instructions).
>
> Fixed in CVS tree.
>
> Best regards,
>
> Wolfgang Denk
>
> --=20
> Software Engineering: Embedded and Realtime Systems, Embedded Linux
> Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de
> We call our dog Egypt, because in every room he leaves a pyramid.
>
>
> --__--__--
>
> Message: 14
> Date: Mon, 12 Jul 2004 17:18:16 -0700 (PDT)
> From: Talib Alim <talibalm at hotmail.com>
> Reply-To: talibalm at hotmail.com
> Subject: Re: [U-Boot-Users] Debugging U-Boot Under DDD
> To: Wolfgang Denk <wd at denx.de>, talibalm at hotmail.com
> Cc: U-Boot List <u-boot-users at lists.sourceforge.net>
>
> I am using eldk
>
> [root at lab1 eldk]# cat version
> ELDK version 3.0
> ppc_8xx: Build 2004-02-16
>
> I am starting ddd with following command line
>
> ddd --debugger /opt/eldk/usr/bin/ppc_8xx-gdb
> target remote bdi:2001
> symbol u-boot
> set $pc = 0x02000100 # my flash is mapped @ 0x02000000
> I am using bin {& not elf}, apart from this problem, it seems to be
> doing fine.
>
> TA
>
> --- Wolfgang Denk <wd at denx.de> wrote:
> > In message <20040712194303.3117.qmail at web50504.mail.yahoo.com> you
> > wrote:
> > >
> > > At this point if I "Cont", I get pop-up from ddd
> > > /.../u-boot-1.1.1/serial.c: No such file or directory.
> >
> > Sounds like a toolchain or user problem to me.
> >
> > > Just before relocating the code, I typed following statements
> > >
> > > (gdb) symbol-file
> > > (gdb) add-symbol-file u-boot 0xbda000
> >
> > How did you start gdb / DDD? Did you really load "u-boot" (i. e.
> > the
> > ELF file)?
> >
> > > (gdb) dir cpu/mpc8xx
> > > (gdb) dir board/fads
> > > (gdb) dir tools/gdb/serial.c
> > > (gdb) dir drivers/serial.c
> >
> > None of these should be necessary. Which toolchain are you using?
> >
> >
> > Best regards,
> >
> > Wolfgang Denk
> >
> > --
> > Software Engineering: Embedded and Realtime Systems, Embedded
> > Linux
> > Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email:
> > wd at denx.de
> > Old programmers never die, they just become managers.
> >
> >
> > -------------------------------------------------------
> > This SF.Net email sponsored by Black Hat Briefings & Training.
> > Attend Black Hat Briefings & Training, Las Vegas July 24-29 -
> > digital self defense, top technical experts, no vendor pitches,
> > unmatched networking opportunities. Visit www.blackhat.com
> > _______________________________________________
> > U-Boot-Users mailing list
> > U-Boot-Users at lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/u-boot-users
> >
>
>
>
>
> --__--__--
>
> _______________________________________________
> U-Boot-Users mailing list
> U-Boot-Users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/u-boot-users
>
>
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