flashrom April 2017

flashrom@flashrom.org

20 participants
25 discussions

Re: [flashrom] New SPI NOR Flash product Support
by Stefan Tauner 15 Aug '19

15 Aug '19

On Mon, 9 May 2016 20:46:18 -0700 David Hendricks <dhendrix(a)google.com> wrote: > Hi Victor, > From Flashrom's software perspective all chips with the same ID are > indistinguishable. > > Part number often includes characteristics such as package and thermal > tolerance which do not affect software compatibility. However, we will add the new names to the in-program (and hence wiki) database so that this new information becomes public. Thanks for the heads up, Victor. -- Kind regards/Mit freundlichen Grüßen, Stefan Tauner

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80/100/132 column line width policy
by Carl-Daniel Hailfinger 15 Dec '18

15 Dec '18

Hi, we're hitting the 80 column limit in our code in ways which actually reduce readability for the code. Examples are various multiline messages and complicated nested code where refactoring to a separate function doesn't make sense. Keeping the old 80 column limit is not really an option anymore. Standard terminal sizes have one of 80, 100 or 132 columns. Given the monitor resolutions many people have nowadays, I think it is safe to say that you can fit two xterms with 100 columns horizonally next to each other. 100 columns should also be sufficient for a msg_p* of roughly 80 columns of text. 132 columns provide more leeway, but IMHO that would be too wide for good readability (and my screen can't fit two xterms side-by-side anymore). Of course some files have sections where any column limit is not acceptable (board lists etc.), but the column limit violations should be limited to the affected file sections, not whole files. Comments? I'd like to get this decided today or tomorrow so we know where we need line breaks in Stefan Tauner's new struct flashchip patch. Regards, Carl-Daniel -- http://www.hailfinger.org/

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[PATCH] Fix undefined behavior in OS defines
by Stefan Tauner 12 Oct '17

12 Oct '17

Found by clang (warning introduced in r258128), reported by Idwer. Signed-off-by: Stefan Tauner <stefan.tauner(a)alumni.tuwien.ac.at> --- platform.h | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/platform.h b/platform.h index c5a52ef..b58c303 100644 --- a/platform.h +++ b/platform.h @@ -24,10 +24,24 @@ #ifndef __PLATFORM_H__ #define __PLATFORM_H__ 1 -// Helper defines for operating systems -#define IS_LINUX (defined(__gnu_linux__) || defined(__linux__)) -#define IS_MACOSX (defined(__APPLE__) && defined(__MACH__)) /* yes, both. */ -#define IS_WINDOWS (defined(_WIN32) || defined(_WIN64) || defined(__WIN32__) || defined(__WINDOWS__)) +/* Helper defines for operating systems. + * This may seem complicated but the following would be undefined behavior: + * #define IS_LINUX (defined(__gnu_linux__) || defined(__linux__)) */ +#if defined(__gnu_linux__) || defined(__linux__) + #define IS_LINUX (1) +#else + #define IS_LINUX (0) +#endif +#if defined(__APPLE__) && defined(__MACH__) /* yes, both. */ + #define IS_MACOSX (1) +#else + #define IS_MACOSX (0) +#endif +#if defined(_WIN32) || defined(_WIN64) || defined(__WIN32__) || defined(__WINDOWS__) + #define IS_WINDOWS (1) +#else + #define IS_WINDOWS (0) +#endif // Likewise for target architectures #if defined (__i386__) || defined (__x86_64__) || defined(__amd64__) -- Kind regards, Stefan Tauner

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flashrom chip read error
by Florin 26 Apr '17

26 Apr '17

Hello, I got this error when trying to read an MX 25 chip using flashrom: [florin@stick flashrom]$ sudo ./flashrom -p ch341a_spi -r ~/Desktop/bios.bin flashrom v0.9.9-r1954 on Linux 4.10.11-1-ARCH (x86_64) flashrom is free software, get the source code at https://flashrom.org Calibrating delay loop... OK. ^[[AFound Generic flash chip "unknown SPI chip (RDID)" (0 kB, SPI) on ch341a_spi. === This flash part has status NOT WORKING for operations: PROBE READ ERASE WRITE The test status of this chip may have been updated in the latest development version of flashrom. If you are running the latest development version, please email a report to flashrom(a)flashrom.org if any of the above operations work correctly for you with this flash chip. Please include the flashrom log file for all operations you tested (see the man page for details), and mention which mainboard or programmer you tested in the subject line. Thanks for your help! Read is not working on this chip. Aborting. [florin@stick flashrom]$ sudo ./flashrom -p ch341a_spi -r ~/Desktop/bios.bin flashrom v0.9.9-r1954 on Linux 4.10.11-1-ARCH (x86_64) flashrom is free software, get the source code at https://flashrom.org Calibrating delay loop... ^[[AOK. Found Generic flash chip "unknown SPI chip (RDID)" (0 kB, SPI) on ch341a_spi. === This flash part has status NOT WORKING for operations: PROBE READ ERASE WRITE The test status of this chip may have been updated in the latest development version of flashrom. If you are running the latest development version, please email a report to flashrom(a)flashrom.org if any of the above operations work correctly for you with this flash chip. Please include the flashrom log file for all operations you tested (see the man page for details), and mention which mainboard or programmer you tested in the subject line. Thanks for your help! Read is not working on this chip. Aborting. [florin@stick flashrom]$ sudo ./flashrom -p ch341a_spi -r ~/Desktop/bios.bin flashrom v0.9.9-r1954 on Linux 4.10.11-1-ARCH (x86_64) flashrom is free software, get the source code at https://flashrom.org Calibrating delay loop... OK. Found Generic flash chip "unknown SPI chip (RDID)" (0 kB, SPI) on ch341a_spi. === This flash part has status NOT WORKING for operations: PROBE READ ERASE WRITE The test status of this chip may have been updated in the latest development version of flashrom. If you are running the latest development version, please email a report to flashrom(a)flashrom.org if any of the above operations work correctly for you with this flash chip. Please include the flashrom log file for all operations you tested (see the man page for details), and mention which mainboard or programmer you tested in the subject line. Thanks for your help! Read is not working on this chip. Aborting. Thank you very much!

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Error: SCIP never cleared!
by Manó Nyuszóka 25 Apr '17

25 Apr '17

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Spansion S25FL128P......X
by The Raven 24 Apr '17

24 Apr '17

I have a spansion S25FL128P......X chip and can do some tests. The "problem" is that i don't know if its an 0 or an 1. On the chip i see only "FL128PIF" and one line lower i see "00299012 C". Probing works (id1 0x01, id2 0x2018): Calibrating delay loop... OK. serprog: Programmer name is "serprog-duino" Found Spansion flash chip "S25FL128P......0" (16384 kB, SPI) on serprog. Found Spansion flash chip "S25FL128P......1" (16384 kB, SPI) on serprog. Found Spansion flash chip "S25FL128S......0" (16384 kB, SPI) on serprog. Found Spansion flash chip "S25FL128S......1" (16384 kB, SPI) on serprog. Found Spansion flash chip "S25FL129P......0" (16384 kB, SPI) on serprog. Found Spansion flash chip "S25FL129P......1" (16384 kB, SPI) on serprog. Multiple flash chip definitions match the detected chip(s): "S25FL128P......0", "S25FL128P......1", "S25FL128S......0", "S25FL128S......1", "S25FL129P......0", "S25FL129P......1" Please specify which chip definition to use with the -c <chipname> option. BTW: Chip was fund on a Dell-Systemboard.

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Re: [flashrom] Namespace prefix for libflashrom
by Antonio Ospite 24 Apr '17

24 Apr '17

On Sun, 23 Apr 2017 15:54:50 -0700 David Hendricks <david.hendricks(a)gmail.com> wrote: > On Sun, Apr 23, 2017 at 7:07 AM, Stefan Tauner <stefan.tauner(a)gmx.at> wrote: > > > On Sat, 22 Apr 2017 11:16:18 -0700 > > David Hendricks <david.hendricks(a)gmail.com> wrote: [...] > > I'd love to hear some arguments about your preferences. > > > I'd be fine with libflashrom_. Since it seems there is no definitive > favorite short prefix I think we should just forget about those and use a > longer one. And in the grand scheme of things neither libflashrom_ nor > flashrom_ are very long. > After hearing the arguments on the list I too formed an opinion about the matter, my preference list is: - flashrom_ (the lib prefix is redundant IMHO, lot of libraries omit it in the API, e.g.: libglib, libgtk); - libflashrom_ (I would tolerate it, it's still better than cryptic prefixes); and maybe one I didn't see: - libfr_ (flash-rom is two words, so "fr" as abbreviation makes sense, but there's really no need to be so concise). Ciao ciao, Antonio -- Antonio Ospite https://ao2.it https://twitter.com/ao2it A: Because it messes up the order in which people normally read text. See http://en.wikipedia.org/wiki/Posting_style Q: Why is top-posting such a bad thing?

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Re: [flashrom] Namespace prefix for libflashrom
by Stefan Tauner 24 Apr '17

24 Apr '17

On Sat, 22 Apr 2017 11:16:18 -0700 David Hendricks <david.hendricks(a)gmail.com> wrote: > Thanks for getting this discussion going on the list, Nico. > > For reference, folks can view the proposed libflashrom.h at > https://review.coreboot.org/#/c/17946 to get a better idea for how these > prefixes will look in libflashrom functions and data structures. > > Also, let's add "fi_" for flashrom interface to the list of proposed > prefixes. > > My preferences (in order): > 1. lf_ > 2. flashrom_ > 3. fi_ > 4. fl_ > 5. flash_ > 6. fr_ > > IMO not only is "lf_" most intuitive, but the way the keys are spaced apart > comfortably on qwerty, dvorak, and colemak layouts and each character > (including the underscore) use a different hand to type. Same could be said > about fl_ with regards to keyboard layout. fr_ is awkward (keys vertically > adjacent) on qwerty and colemak, and fi_ is vertically adjacent on dvorak. > flash_ and flashrom_ are not bad but are obviously many more keystrokes. I value giving thoughts to details, but in this case I reside more with torvalds: "if your typing speed is the main issue when you're coding, you're doing something seriously wrong." In my opinion the prefix has to satisfy a number of requirements: - no ISO C(99/11) or POSIX violations - no easy collisions with other libraries or user functions - easily recognizable prefix for humans associated with the concept of libflashrom (i.e. some kind of abstraction to interact with NOR flash chips via different programmers) - reasonable short length to avoid overly long function names etc. based on the prefix > flash_ is pretty good - For the most part it flows well with functions such > as flash_image_read() and flash_image_write(), but is awkward with some > other stuff like "flash_set_log_callback()". If we're already typing >2 > letters I think we ought to just use flashrom_ as the prefix to be > complete, avoid awkward contexts, and avoid namespace conflicts (users > might want to use flash_ in their code). flash_ seems to me a bit too concrete... it gets (too) easily associated with the actual memory device and not so much to libflashrom IMHO. flashrom_ is quite long and would be associated with flashrom (the utility) and would make it harder to distinguishing the library from the program. libflashrom_ is probably too long but would at least transport the meaning best in my opinion. So... shorter but conveying the same meaning: - lflashrom, lfrom: meh - lflashr: would require a new awful website with flash chips dancing for no good reason ;) - lf: was already mentioned, I deem it a bit too short and ambiguous - fl: too easily misinterpreted as a flashrom function prefix IMHO - the aspect of being a library is important to me. - libf: would be in the tradition of short-named unix libraries (and seems to be unused actually as a library name), but does not really improve on lf and would make it look way too important than it is :) - lfr: was proposed in the wiki, possibly by myself - can't remember. This might be the optimal compromise: intuitive if you heard it once, probably quite unique and very short. - lfl: might also work if neither lfr nor lf are acceptable (but why would lfl then be :) Thus my favorites are basically - lfr_ - libflashrom_ - lf_ I'd love to hear some arguments about your preferences. Side note because I don't have the time yet to do proper reviews but I have briefly looked at nico's libflashrom.h: > struct flashprog; > typedef struct flashprog fl_flashprog_t; > struct flashctx; > typedef struct flashctx fl_flashctx_t; Please avoid type abstraction with no good reason (i.e. if there are no alternative implementations that need to be abstracted). Also, please avoid the _t suffix, which is reserved by POSIX (the broadness and widespread infringement of this reservation are debatable but is nuked anyway if there is not typedef to begin with ;). There is nothing wrong with struct fl_programmer and struct fl_context or struct fl_ctx... or whatever the prefix is. Actually, I deem the former superior to "flashprog" which could mean a number of things e.g. in int fl_flash_probe(fl_flashctx_t **, const fl_flashprog_t *, const char *chip_name); I can come up with at least these meanings: program, programmer, progress. Another side note: > Moving forward is currently more important than finding the perfect name. With that attitude you (plural) are destined to create just another fork(-ish branch). From what I gathered up so far from the gerrit activity this is possible happening already anyway and it might actually be successful (although unintended nand/nor ill-intended and I don't blame you). I will try to give some more feedback soon. -- Kind regards/Mit freundlichen Grüßen, Stefan Tauner

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Re: [flashrom] Namespace prefix for libflashrom
by Nico Huber 22 Apr '17

22 Apr '17

On 22.04.2017 20:16, David Hendricks wrote: > Thanks for getting this discussion going on the list, Nico. > > For reference, folks can view the proposed libflashrom.h at > https://review.coreboot.org/#/c/17946 to get a better idea for how these > prefixes will look in libflashrom functions and data structures. > > Also, let's add "fi_" for flashrom interface to the list of proposed > prefixes. > > My preferences (in order): > 1. lf_ > 2. flashrom_ > 3. fi_ > 4. fl_ > 5. flash_ > 6. fr_ > > IMO not only is "lf_" most intuitive, but the way the keys are spaced apart > comfortably on qwerty, dvorak, and colemak layouts and each character > (including the underscore) use a different hand to type. Same could be said > about fl_ with regards to keyboard layout. fr_ is awkward (keys vertically > adjacent) on qwerty and colemak, and fi_ is vertically adjacent on dvorak. > flash_ and flashrom_ are not bad but are obviously many more keystrokes. > > The problem I have with fl_ is that it is also used for flash layout > structs: https://review.coreboot.org/#/c/17944/4/layout.h . The layout > structs are used internally and can be changed easily, though. My bad. Only the `struct fl_layout` is part of the libflashrom inter- face. I removed all other occurrences of the prefix for now from my patches. > > flash_ is pretty good - For the most part it flows well with functions such > as flash_image_read() and flash_image_write(), but is awkward with some > other stuff like "flash_set_log_callback()". If we're already typing >2 > letters I think we ought to just use flashrom_ as the prefix to be > complete, avoid awkward contexts, and avoid namespace conflicts (users > might want to use flash_ in their code). Agreed. Nico > > > On Sat, Apr 22, 2017 at 9:42 AM, Nico Huber <nico.h(a)gmx.de> wrote: > >> Hi flashrom folks, >> >> working again on implementing the libflashrom interface described here >> [1]. During review [2] the question arose what `fl_` means and if we >> don't want to use something else. The following alternatives were pro- >> posed in the wiki: >> >> * fl_ / FL_ (probably *fl*ashrom) >> * lf_ / LF_ (*l*ib *f*lashrom) >> * lfr_ / LFR_ (*l*ib *f*lash *r*om) >> * rom_ / ROM_ >> >> IIRC, on IRC the following was proposed: >> >> * fr_ / FR_ (*f*lash *r*om) >> >> I don't think it has to be an acronym, so I'd add: >> >> * flash_ / FLASH_ >> * flashrom_ / FLASHROM_ >> >> My personal preference would be either `fr_` or `flash_`. >> >> I think this will be open for discussion only for few days. Moving >> forward is currently more important than finding the perfect name. >> >> Best regards, >> Nico >> >> [1] https://www.flashrom.org/Libflashrom >> [2] https://review.coreboot.org/#/c/17946/ >> >> _______________________________________________ >> flashrom mailing list >> flashrom(a)flashrom.org >> https://mail.coreboot.org/mailman/listinfo/flashrom >> >

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Namespace prefix for libflashrom
by Nico Huber 22 Apr '17

22 Apr '17

Hi flashrom folks, working again on implementing the libflashrom interface described here [1]. During review [2] the question arose what `fl_` means and if we don't want to use something else. The following alternatives were pro- posed in the wiki: * fl_ / FL_ (probably *fl*ashrom) * lf_ / LF_ (*l*ib *f*lashrom) * lfr_ / LFR_ (*l*ib *f*lash *r*om) * rom_ / ROM_ IIRC, on IRC the following was proposed: * fr_ / FR_ (*f*lash *r*om) I don't think it has to be an acronym, so I'd add: * flash_ / FLASH_ * flashrom_ / FLASHROM_ My personal preference would be either `fr_` or `flash_`. I think this will be open for discussion only for few days. Moving forward is currently more important than finding the perfect name. Best regards, Nico [1] https://www.flashrom.org/Libflashrom [2] https://review.coreboot.org/#/c/17946/

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flashrom April 2017