* Anyone got drivers/mtd/maps/pm828.c? @ 2005-06-14 9:47 Alex Zeffertt 2005-06-15 13:18 ` Clemens Koller 0 siblings, 1 reply; 4+ messages in thread From: Alex Zeffertt @ 2005-06-14 9:47 UTC (permalink / raw) To: linuxppc-embedded Hi there, I need to get flash partitions working on my PM828 development board. Has anybody already written a pm828.c? If so I'd appreciate a look at it. TIA, Alex ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Anyone got drivers/mtd/maps/pm828.c? 2005-06-14 9:47 Anyone got drivers/mtd/maps/pm828.c? Alex Zeffertt @ 2005-06-15 13:18 ` Clemens Koller 2005-06-15 13:54 ` Alex Zeffertt 0 siblings, 1 reply; 4+ messages in thread From: Clemens Koller @ 2005-06-15 13:18 UTC (permalink / raw) To: Alex Zeffertt; +Cc: linuxppc-embedded Hi, Alex! Hmm, I don't know the PM828 much in detail, but have you tried the "generic" physmap driver which is in the kernel? Just give it the base address and the size, and it should probe the cfi and you are done (well, it was working fine for me on my PM854). Of course, you need to make sure, that your hardware / memory mapping is initialized properly (which happens usually in the boot loader). If it's not, let me know and I can give you some code to mess around with the registers in a kernel module. Best greets, Clemens Koller _______________________________ R&D Imaging Devices Anagramm GmbH Rupert-Mayer-Str. 45/1 81379 Muenchen Germany http://www.anagramm.de Phone: +49-89-741518-50 Fax: +49-89-741518-19 Alex Zeffertt wrote: > Hi there, > > I need to get flash partitions working on my PM828 development board. > Has anybody already written a pm828.c? If so I'd appreciate a look at > it. > > TIA, > > Alex > _______________________________________________ > Linuxppc-embedded mailing list > Linuxppc-embedded@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-embedded > ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Anyone got drivers/mtd/maps/pm828.c? 2005-06-15 13:18 ` Clemens Koller @ 2005-06-15 13:54 ` Alex Zeffertt 2005-06-16 8:47 ` sub-module loading (was: Anyone got drivers/mtd/maps/pm828.c?) Clemens Koller 0 siblings, 1 reply; 4+ messages in thread From: Alex Zeffertt @ 2005-06-15 13:54 UTC (permalink / raw) To: Clemens Koller; +Cc: linuxppc-embedded [-- Attachment #1: Type: text/plain, Size: 2043 bytes --] Hi Clemens, Thanks for your help. I've done it now (see attached). The partitioning is specific to our application but it is easily modified. I noticed a buggette in the mtd code while doing this. If you build everything as a module then the sub-module loading doesn't work properly. For example in gen_probe.c it says #ifdef CONFIG_MTD_CFI_INTELEXT case 0x0001: case 0x0003: return cfi_cmdset_0001(map, primary); #endif where it should really say #if defined(CONFIG_MTD_CFI_INTELEXT) || defined(CONFIG_MTD_CFI_INTELEXT_MODULE) case 0x0001: case 0x0003: return cfi_cmdset_0001(map, primary); #endif There are several problems like this. In the end I gave up and just built everything except the actual mapping driver as kernel resident. Alex On Wed, 15 Jun 2005 15:18:37 +0200 Clemens Koller <clemens.koller@anagramm.de> wrote: > Hi, Alex! > > Hmm, I don't know the PM828 much in detail, but have you > tried the "generic" physmap driver which is in the kernel? > Just give it the base address and the size, and it should > probe the cfi and you are done (well, it was working fine > for me on my PM854). > Of course, you need to make sure, that your hardware / memory > mapping is initialized properly (which happens usually in the > boot loader). If it's not, let me know and I can give you > some code to mess around with the registers in a kernel module. > > Best greets, > > Clemens Koller > _______________________________ > R&D Imaging Devices > Anagramm GmbH > Rupert-Mayer-Str. 45/1 > 81379 Muenchen > Germany > > http://www.anagramm.de > Phone: +49-89-741518-50 > Fax: +49-89-741518-19 > > > Alex Zeffertt wrote: > > Hi there, > > > > I need to get flash partitions working on my PM828 development > > board. Has anybody already written a pm828.c? If so I'd appreciate > > a look at it. > > > > TIA, > > > > Alex > > _______________________________________________ > > Linuxppc-embedded mailing list > > Linuxppc-embedded@ozlabs.org > > https://ozlabs.org/mailman/listinfo/linuxppc-embedded > > [-- Attachment #2: pm828-icu.c.gz --] [-- Type: application/x-gzip, Size: 2480 bytes --] ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: sub-module loading (was: Anyone got drivers/mtd/maps/pm828.c?) 2005-06-15 13:54 ` Alex Zeffertt @ 2005-06-16 8:47 ` Clemens Koller 0 siblings, 0 replies; 4+ messages in thread From: Clemens Koller @ 2005-06-16 8:47 UTC (permalink / raw) To: Alex Zeffertt; +Cc: linux-mtd, linuxppc-embedded Hi, Alex... good to know, that you made good progress. :-) I just X-post this to linux-mtd so maybe somebody can have a look at your issue, too. I also experienced "problems" with sub-module-loading. Or maybe I just missed something: I need to load mtdchar and map_ram separately in order to be able to probe my mminfo.ko module to access/mess some SRAM in my FPGA on a MPC8540. I didn't care about that yet, but maybe there are missing dependencies which can be solved automagically here. Or is the sub-module loading supposed to work like this (well, manual) as somebody might want to choose in between i.e. mtdblock and/or mtdchar? I'm talking about the Kernel 2.6.11.11 mtd subsystem. Best greets, Clemens Koller _______________________________ R&D Imaging Devices Anagramm GmbH Rupert-Mayer-Str. 45/1 81379 Muenchen Germany http://www.anagramm.de Phone: +49-89-741518-50 Fax: +49-89-741518-19 Alex Zeffertt wrote: > Hi Clemens, > > Thanks for your help. I've done it now (see attached). The > partitioning is specific to our application but it is easily modified. > > I noticed a buggette in the mtd code while doing this. If you build > everything as a module then the sub-module loading doesn't work > properly. For example in gen_probe.c it says > > #ifdef CONFIG_MTD_CFI_INTELEXT > case 0x0001: > case 0x0003: > return cfi_cmdset_0001(map, primary); > #endif > > where it should really say > > #if defined(CONFIG_MTD_CFI_INTELEXT) || > defined(CONFIG_MTD_CFI_INTELEXT_MODULE) > case 0x0001: > case 0x0003: > return cfi_cmdset_0001(map, primary); > #endif > > There are several problems like this. In the end I gave up and just > built everything except the actual mapping driver as kernel resident. > > Alex > > > On Wed, 15 Jun 2005 15:18:37 +0200 > Clemens Koller <clemens.koller@anagramm.de> wrote: > > >>Hi, Alex! >> >>Hmm, I don't know the PM828 much in detail, but have you >>tried the "generic" physmap driver which is in the kernel? >>Just give it the base address and the size, and it should >>probe the cfi and you are done (well, it was working fine >>for me on my PM854). >>Of course, you need to make sure, that your hardware / memory >>mapping is initialized properly (which happens usually in the >>boot loader). If it's not, let me know and I can give you >>some code to mess around with the registers in a kernel module. >> >>Best greets, >> >>Clemens Koller >>_______________________________ >>R&D Imaging Devices >>Anagramm GmbH >>Rupert-Mayer-Str. 45/1 >>81379 Muenchen >>Germany >> >>http://www.anagramm.de >>Phone: +49-89-741518-50 >>Fax: +49-89-741518-19 >> >> >>Alex Zeffertt wrote: >> >>>Hi there, >>> >>>I need to get flash partitions working on my PM828 development >>>board. Has anybody already written a pm828.c? If so I'd appreciate >>>a look at it. >>> >>>TIA, >>> >>>Alex >>>_______________________________________________ >>>Linuxppc-embedded mailing list >>>Linuxppc-embedded@ozlabs.org >>>https://ozlabs.org/mailman/listinfo/linuxppc-embedded >>> ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2005-06-16 8:47 UTC | newest] Thread overview: 4+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2005-06-14 9:47 Anyone got drivers/mtd/maps/pm828.c? Alex Zeffertt 2005-06-15 13:18 ` Clemens Koller 2005-06-15 13:54 ` Alex Zeffertt 2005-06-16 8:47 ` sub-module loading (was: Anyone got drivers/mtd/maps/pm828.c?) Clemens Koller
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