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* Move erase verification to generic codeCarl-Daniel Hailfinger2011-06-261-5/+1
| | | | | | | | | | | | Erase functions are no longer called from chip drivers and thus their internal erase verification can be moved to generic code. This also makes it easier to skip the verify step if desired and to differentiate between failed command submission and failed erase verification. Corresponding to flashrom svn r1353. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
* Remove erase_chip_stm50flw0x0xMichael Karcher2011-04-141-27/+0
| | | | | | | | | | | | | | | | As the comment indicates, that function is not a chip erase function at all, but a function calling a block eraser in a loop. So it adds no extra value to what we already have in the block_eraser infrastructure. Furthermore, that function assumes a uniform sector size layout, but is referenced from flash chip with non-uniform sector size layout, which is just wrong. Corresponding to flashrom svn r1287. Signed-off-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
* Convince compilers to put constant data into the .rodata sectionMathias Krause2011-01-171-1/+1
| | | | | | | | | | | | | | | | This patch reduces the stack usage by declaring 'const' stack variables as 'static const' so they end up in the .rodata section instead of being copied from there to the stack for every invocation of the corresponding function. As a plus we end up in having a smaller binary as the "copy from .rodata to stack" code isn't emitted by the compiler any more (roughly -100 bytes). Corresponding to flashrom svn r1252. Signed-off-by: Mathias Krause <mathias.krause@secunet.com> Acked-by: Stefan Reinauer <stepan@coreboot.org>
* Unify chip write functionsCarl-Daniel Hailfinger2010-10-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The currently used write functions (wrappers) all use helpers which perform the actual write (inner functions). The signature of the write wrappers is: int write_chip(struct flashchip *flash, uint8_t * buf); The signature of the inner write functions varied a lot. This patch changes them to: int write_part(struct flashchip *flash, uint8_t *src, int start, int len); Did you know that flashrom has only 8 inner write functions for all flash chips? write_page_write_jedec_common write_sector_jedec_common write_sector_28sf040 spi_chip_write_256_new spi_chip_write_1_new spi_aai_write_new write_page_82802ab write_page_m29f400bt Export all inner write functions. Change the function signature of wait_82802ab to eliminate single-use variables. Remove an error message in write_page_m29f400bt which was printed for every byte written regardless of success. Add sharplhf00l04.c to the list of flash chip drivers in the Makefile. While the functions in there are unused, I suspect we will need them later, and by hooking the file up we ensure that compilation won't break. Corresponding to flashrom svn r1208. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Remove progress printing from individual flash chip driversCarl-Daniel Hailfinger2010-10-081-6/+0
| | | | | | | | | | Progress printing should be handled in the generic code, and will end up there once partial write is possible. Corresponding to flashrom svn r1207. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Sean Nelson <audiohacked@gmail.com>
* Move implicit erase out of chip driversCarl-Daniel Hailfinger2010-10-081-0/+2
| | | | | | | | | | | | | | | | | | Flashrom had an implicit erase-on-write for most flash chip and programmer drivers, but it was not entirely consistent. Some drivers had their own hand-rolled partial update functionality which made handling partial updates from generic code impossible. Move implicit erase out of chip drivers, and kill some dead erase functions at the same time. A full chip erase is now performed in the generic code for all flash chips on write, and after that the whole chip is written. Corresponding to flashrom svn r1206. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Kill global variables, constants and functions if local scope sufficesCarl-Daniel Hailfinger2010-07-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | Constify variables where possible. Initialize programmer-related variables explicitly in programmer_init to allow running programmer_init from a clean state after programmer_shutdown. Prohibit registering programmer shutdown functions before init or after shutdown. Kill some dead code. Rename global variables with namespace-polluting names. Use a previously unused locking helper function in sst49lfxxxc.c. This is needed for libflashrom. Effects on the binary size of flashrom are minimal (300 bytes shrinkage), but the data section shrinks by 4384 bytes, and that's a good thing if flashrom is operating in constrained envionments. Corresponding to flashrom svn r1068. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
* Remove unneeded #include statements completelyCarl-Daniel Hailfinger2010-05-301-2/+0
| | | | | | | | | | | | | | | Unistd.h was only used to get a definition of NULL in all files. Add our own NULL #define and remove unistd.h from flash.h stdio.h has no place in flash.h, it should be included only in files which really need it. Add #include statements in individual .c files where needed. Replace a few printf with msg_* to eliminate the need for stdio.h. Corresponding to flashrom svn r1021. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Polish the flashrom code comments and outputs a bitUwe Hermann2010-03-251-1/+1
| | | | | | | | | | | - Fix a number of typos (found via ispell). - Use correct vendor names (as per their websites) consistently. Corresponding to flashrom svn r985. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Convert chips' message printing to msg_c* Fixed suggestions by Carl-DanielSean Nelson2010-03-241-15/+14
| | | | | | | Corresponding to flashrom svn r982. Signed-off-by: Sean Nelson <audiohacked@gmail.com> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
* Unlock fixupSean Nelson2010-03-201-1/+1
| | | | | | | Corresponding to flashrom svn r961. Signed-off-by: Sean Nelson <audiohacked@gmail.com> Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
* Various JEDEC refactorings touching 82802ab.c, sharplhf00l04.c and ↵Sean Nelson2010-03-191-137/+19
| | | | | | | | | | | | | | | | | | | stm50flw0x0x.c Rename print_82802ab_status to print_status_82802ab add unlock_82802ab strip unlock code from erase_block_82802ab rename erase_82802ab_block to erase_block_80280ab delete sharplhf00l04.o from Makefile delete *_lhf00l04* from chipdrivers.h. add unlock_stm50flw0x0x delete wait_stm50flw0x0x delete write_page_stm50flw0x0x convert erase_stm50flw0x0x to erase_chip_stm50flw0x0x delete write_stm50flw0x0x add unlock_82802ab to two Intel chips with TEST_BAD_WRITE change the status of 82802AB, 82802AC, M50FW040, M50FW080 to TEST_OK_PR Corresponding to flashrom svn r948. Signed-off-by: Sean Nelson <audiohacked@gmail.com> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
* Split spi.c into programmer and chip code Remove chipdriver.h include from ↵Sean Nelson2010-02-261-0/+1
| | | | | | | | | | | | | | | | | | | flash.h Some of the spi programmer drivers required chipdrivers.h, needs fixing later: it87spi.c ichspi.c sb600spi.c wbsio_spi.c buspirate_spi.c ft2232spi.c bitbang_spi.c dediprog.c Corresponding to flashrom svn r914. Signed-off-by: Sean Nelson <audiohacked@gmail.com> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
* Block eraser conversions and support for Eon EN25B seriesSean Nelson2010-01-191-6/+40
| | | | | | | | | | | | | | | | | | Convert chips to block_erasers: SyncMOS S29C31004T SyncMOS S29C51001T SyncMOS S29C51002T SyncMOS S29C51004T TI TMS29F002RT TI TMS29F002RB SyncMOS chips have Uniform sector; boot blocks on chips are made up of uniform sectors but have locking. Corresponding to flashrom svn r871. Signed-off-by: Sean Nelson <audiohacked@gmail.com> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
* Use the register mapping feature bitCarl-Daniel Hailfinger2010-01-091-12/+0
| | | | | | | | | | | | | | | | | | | All functions which just call probe_jedec and then map flash registers are replaced by probe_jedec. All functions which call probe_jedec, map flash registers and do something else can at least eliminate mapping flash registers. Fix logic inversion in probe_jedec to map flash registers on success instead of on failure. Change a few TIMING_IGNORED to TIMING_FIXME where probe_jedec is used. Total savings: One probe function simplified, three probe functions eliminated. Corresponding to flashrom svn r839. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de> Acked-by: Sean Nelson <audiohacked@gmail.com>
* Refine support for the JEDEC Software Data ProtectionMichael Karcher2009-11-261-12/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the extremely dangerous unprotect_jedec function which is not used at all within flashrom code, and renames the misleadingly named protect_jedec function to start_program_jedec. Calls to protect_jedec after flashing are removed, because a) on LPC chips, the command sent by protoct_jedec is not even in the datasheet and b) on parallel chips, the block write command issued before already contained the software protection sequence, so software protection is definitely enabled. This patch also removes two clones of protect_jedec Background: JEDEC Software Data Protection started as an optional feature, which was disabled on the first single-voltage-flash chips. The software data protection is the need to prefix a write with a magic "write enable" command, while without write protection every write access into the chip's address space modifies flash content. This magic write enable command also tells the flash chip that the programmer obviously support sending write-enable commands and turns off the "any write modifies flash content" mode. There also exist a two-command (6 writes) sequence that disables Software Data Protection completey, which should only ever be used to prepare updating with a device that can't handle software data protection. Corresponding to flashrom svn r783. Signed-off-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de> Acked-by: Sean Nelson <audiohacked@gmail.com> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
* Fix some of the issues reported by LLVM/clang's scan-buildStefan Reinauer2009-09-161-4/+2
| | | | | | | | | Corresponding to flashrom svn r722. Signed-off-by: Stefan Reinauer <stepan@coresystems.de> This commit fixes only some of the issues, those that were Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
* Unify some probe functions that basically correspond to probe_jedec()Carl-Daniel Hailfinger2009-09-051-42/+3
| | | | | | | | | | | | | | | | | | | | | | Use the correct reset sequence for 82802AB. Detailed explanation: The reset sequence before ID reading was correct, so ID always worked. But the reset sequence after ID reading was a copy-paste leftover from probe_jedec and didn't have any effect. I dug up flash_and_burn from the freebios-v1 tree and found out that 82802ab.c was indeed a copy of jedec.c with lots of experimental unannotated #if 0 and #if 1. About the wait_82802ab change: Before the patch, wait_82802ab entered read status mode, switched to ID mode, then tried an incorrect and unsupported JEDEC command to exit ID mode. Nobody ever saw that this failed because all subsequent function calls had the correct reset sequence at the beginning. With the patch, wait_82802ab enters read status mode, then switches back to read mode with the official reset command. Corresponding to flashrom svn r717. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Stefan Reinauer <stepan@coresystems.de>
* Standardize on using __func__ instead of __FUNCTION__Uwe Hermann2009-09-021-1/+1
| | | | | | | | | | | | | | | The __func__ variant is standardized in C99 and recommended to be used instead of __FUNCTION__ in the gcc info page. Only _very_ old versions of gcc did not know about __func__, but we've been using both __func__ and __FUNCTION__ for a long while now, and nobody complained about this, so all our users seem to use recent enough compilers. Corresponding to flashrom svn r711. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Stefan Reinauer <stepan@coresystems.de>
* Flashrom only checks for very few chips if the erase workedCarl-Daniel Hailfinger2009-06-151-13/+14
| | | | | | | | | | | | | | | | | | | And even when it checks if the erase worked, the result of that check is often ignored. Convert all erase functions and actually check return codes almost everywhere. Check inside all erase_* routines if erase worked, not outside. erase_sector_jedec and erase_block_jedec have changed prototypes to enable erase checking. Uwe successfully tested LPC on an CK804 box and SPI on some SB600 box. Corresponding to flashrom svn r595. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Signed-off-by: Urja Rannikko <urjaman@gmail.com> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Split flashchips.h from flash.hCarl-Daniel Hailfinger2009-06-151-0/+1
| | | | | | | | | | | | | | Flash.h not only contains function prototypes and general settings, it also has a huge chunk of chip and vendor IDs in the middle. Split them out into a separate flashchips.h and adjust #include wherever needed. Corresponding to flashrom svn r594. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Urja Rannikko <urjaman@gmail.com> Acked-by: Stefan Reinauer <stepan@coresystems.de>
* Sometimes we want to read/write more than 4 bytes of chip content at onceCarl-Daniel Hailfinger2009-06-051-2/+9
| | | | | | | | | | | | | | | | | | | | Add chip_{read,write}n to the external flasher infrastructure which read/write n bytes at once. Fix a few places where the code used memcpy/memcmp although that is strictly impossible with external flashers. Place a FIXME in the layout.c code because usage is not totally clear and needs to be fixed to support external flashers. As a nice side benefit, we get a noticeable speedup for builtin flash reading which is now a memcpy() of the full flash area instead of a series of single-byte reads. Corresponding to flashrom svn r579. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Urja Rannikko <urjaman@gmail.com> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Add programmer-specific delay functionsCarl-Daniel Hailfinger2009-06-051-9/+9
| | | | | | | | | | | Add external programmer delay functions so external programmers can handle the delay on their own if needed. Corresponding to flashrom svn r578. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Urja Rannikko <urjaman@gmail.com>
* Drop unused/duplicated #includes and some dead codeUwe Hermann2009-05-161-2/+0
| | | | | | | | | Build-tested on 32bit x86. Corresponding to flashrom svn r521. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Introduce a type "chipaddr" to abstract the offsets within flash regionsCarl-Daniel Hailfinger2009-05-161-13/+13
| | | | | | | | | | | | | | | | | | | Use chipaddr instead of volatile uint8_t * because when we access chips in external flashers, they are not accessed via pointers at all. Benefits: This allows us to differentiate between volatile machine memory accesses and flash chip accesses. It also enforces usage of chip_{read,write}[bwl] to access flash chips, so nobody will unintentionally use pointers to access chips anymore. Some unneeded casts are removed as well. Grepping for chip operations and machine memory operations doesn't yield any false positives anymore. Compile tested on 32 bit and 64 bit Linux. Corresponding to flashrom svn r519. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Rename the STM50FLW register variable flash_addr used for block write ↵Carl-Daniel Hailfinger2009-05-111-5/+5
| | | | | | | | | | | | protect handling All other chips call it wrprotect which is less confusing. As a side benefit, flash_addr is now a name usable for other stuff. Corresponding to flashrom svn r496. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Ronald G. Minnich <rminnich@gmail.com>
* FreeBSD definitions of (read|write)[bwl] collide with our ownCarl-Daniel Hailfinger2009-03-061-32/+32
| | | | | | | | | | | | Before we attempt trickery, we can simply rename the accessor functions. Patch created with the help of Coccinelle. Corresponding to flashrom svn r420 and coreboot v2 svn r3984. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Idwer Vollering <idwer_v@hotmail.com> Acked-by: Patrick Georgi <patrick@georgi-clan.de>
* Use helper functions to access flash chipsCarl-Daniel Hailfinger2009-03-051-32/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Right now we perform direct pointer manipulation without any abstraction to read from and write to memory mapped flash chips. That makes it impossible to drive any flasher which does not mmap the whole chip. Using helper functions readb() and writeb() allows a driver for external flash programmers like Paraflasher to replace readb and writeb with calls to its own chip access routines. This patch has the additional advantage of removing lots of unnecessary casts to volatile uint8_t * and now-superfluous parentheses which caused poor readability. I used the semantic patcher Coccinelle to create this patch. The semantic patch follows: @@ expression a; typedef uint8_t; volatile uint8_t *b; @@ - *(b) = (a); + writeb(a, b); @@ volatile uint8_t *b; @@ - *(b) + readb(b) @@ type T; T b; @@ ( readb | writeb ) (..., - (T) - (b) + b ) In contrast to a sed script, the semantic patch performs type checking before converting anything. Tested-by: Joe Julian Corresponding to flashrom svn r418 and coreboot v2 svn r3971. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: FENG Yu Ning <fengyuning1984@gmail.com>
* Beautify flash chip ID verbose printout a little, always use %02xPeter Stuge2009-01-251-1/+1
| | | | | | | Corresponding to flashrom svn r390 and coreboot v2 svn r3895. Signed-off-by: Peter Stuge <peter@stuge.se> Acked-by: Peter Stuge <peter@stuge.se>
* Coding-style fixes for flashrom, partly indent-aidedUwe Hermann2008-10-181-34/+32
| | | | | | | Corresponding to flashrom svn r326 and coreboot v2 svn r3669. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Separate ST M50FLW support from generic JEDEC codeClaus Gindhart2008-04-281-0/+293
The generic jedec.c does not work for the ST M50FLW flash devices, because they need an unlock command first. For this reason, ST M50FLW support is moved to a new HW support module, because any change in jedec.c would bear the risk to cause problems with the already supported devices. It's already tested with ST M50FLW080A; the other chips of this family i dont have available, so i couldnt test it. Corresponding to flashrom svn r219 and coreboot v2 svn r3274. Signed-off-by: Claus Gindhart <claus.gindhart@kontron.com> Acked-by: Stefan Reinauer <stepan@coresystems.de>
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