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* Reinitialize the delay loop upon recalibrationUrja Rannikko2010-04-091-1/+2
| | | | | | | | | Fix an unescaped % in a format specifier. Corresponding to flashrom svn r992. Signed-off-by: Urja Rannikko <urjaman@gmail.com> Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
* Refine and fix the delay loop calculationCarl-Daniel Hailfinger2010-03-311-13/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current delay loop calculation is still from revision 1 of flashrom, and since then it had a logic bug which caused all delays to be twice as long as intended. Fix the delay duration. Protect against delay loop overflows. Detect a non-working delay loop. Change the delay loop itself to ensure clever compiler optimizers won't eliminate it (as happens with clang/llvm in the current code). Some people suggested machine-specific asm, but the empty asm statement with the loop counter as register/memory input has the benefit of being perfectly cross-platform and working in gcc and clang. If time goes backwards (catastrophical NTP time difference, manual time change), timing measurements were shot because the new-old time subtraction yielded negative numbers which weren't handled correctly because the variable is unsigned. Work around that issue (a fix is mathematically impossible). If time goes forward too fast, pick the biggest possible timing measurement with a guaranteed overflow avoidance for all timing calculations. Check four times if the calculated timing is at most 10% too fast. This addresses OS scheduler interactions, e.g. being scheduled out during measurement which inflates measurements. If the timing looks like garbage, recalculate the timer values up to four times before giving up. Avoid division by zero in rare cases where timing measurements for a 250 ms delay returned 0 us elapsed. Corresponding to flashrom svn r990. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Maciej Pijanka <maciej.pijanka@gmail.com>
* The delay loop is probably one of the oldest pieces of codeCarl-Daniel Hailfinger2010-03-271-13/+29
| | | | | | | | | | Clean up code duplication and measure timing of 10/100/1000/10000 us delays. Corresponding to flashrom svn r986. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Maciej Pijanka <maciej.pijanka@gmail.com>
* Internal.c was always compiled in because it hosted the function ↵Carl-Daniel Hailfinger2009-12-241-0/+13
| | | | | | | | | | | | | internal_delay() Move that function to udelay.c and compile internal.c only if really needed. physmap.c is only needed if the programmer is internal or a PCI card. Make its compilation conditional. Corresponding to flashrom svn r822. Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> Acked-by: Idwer Vollering <vidwer@gmail.com>
* Add programmer-specific delay functionsCarl-Daniel Hailfinger2009-06-051-2/+2
| | | | | | | | | | | 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 Hermann2009-05-161-1/+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>
* Some coding style and consistency fixesUwe Hermann2009-04-151-1/+1
| | | | | | | Corresponding to flashrom svn r429 and coreboot v2 svn r4117. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Coding-style fixes for flashrom, partly indent-aidedUwe Hermann2008-10-181-1/+1
| | | | | | | 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>
* Debug print actual time base calculated by myusec_calibrate_delay()Peter Stuge2008-09-071-1/+7
| | | | | | | Corresponding to flashrom svn r314 and coreboot v2 svn r3569. Signed-off-by: Peter Stuge <peter@stuge.se> Acked-by: Peter Stuge <peter@stuge.se>
* Some cosmetic cleanups in the flashrom code and outputUwe Hermann2007-10-171-1/+1
| | | | | | | Corresponding to flashrom svn r151 and coreboot v2 svn r2873. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Stefan Reinauer <stepan@coresystems.de>
* Revert my last cleanup patchUwe Hermann2007-10-101-1/+1
| | | | | | | Corresponding to flashrom svn r143 and coreboot v2 svn r2847. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Cosmetic changes to make the flashrom output more consistentUwe Hermann2007-10-101-1/+1
| | | | | | | Corresponding to flashrom svn r142 and coreboot v2 svn r2846. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Add '(C)' where it's missing (for consistency reasons)Uwe Hermann2007-09-091-1/+1
| | | | | | | Corresponding to flashrom svn r136 and coreboot v2 svn r2768. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Add missing license header to udelay.cUwe Hermann2007-09-091-0/+20
| | | | | | | | | | | | | | | I'm self-ack'ing this, as the origin of the code in udelay.c (and thus the license and copyright owner) is pretty clear. The code which is now in udelay.c was split out from flash_rom.c in r1428, and flash_rom.c, in turn, has been around since the beginning and had a 'Copyright 2000 Silicon Integrated System Corporation' line as well as the usual GPLv2-or-later license header. Corresponding to flashrom svn r135 and coreboot v2 svn r2767. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Drop a bunch of useless header files, merge them into flash.hUwe Hermann2007-08-231-1/+1
| | | | | | | Corresponding to flashrom svn r128 and coreboot v2 svn r2746. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Stefan Reinauer <stepan@coresystems.de>
* Trivial (cosmetic) cleanupStefan Reinauer2007-04-061-2/+4
| | | | | | | | | | | | | * Only open /dev/mem once and do it early. * Drop extern for function prototypes. * Minimize ts5300 impact in probe_flash() This cleanup will making ICH7 SPI support quite some easier. Corresponding to flashrom svn r100 and coreboot v2 svn r2585. Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Stefan Reinauer <stepan@coresystems.de>
* Coding style fixesUwe Hermann2007-04-011-2/+2
| | | | | | | Corresponding to flashrom svn r97 and coreboot v2 svn r2577. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
* Flashrom update from Stefan, resolve issue 21Ollie Lho2005-11-261-2/+3
| | | | Corresponding to flashrom svn r34 and coreboot v2 svn r2111.
* Consolidate more jedec standard codeOllie Lho2004-03-201-6/+5
| | | | Corresponding to flashrom svn r15 and coreboot v2 svn r1457.
* Fix 32bit vs. 64bit long int arithematicsOllie Lho2004-03-181-3/+0
| | | | Corresponding to flashrom svn r8 and coreboot v2 svn r1434.
* Use standard product ID exit method for w49f002uOllie Lho2004-03-171-3/+1
| | | | Corresponding to flashrom svn r7 and coreboot v2 svn r1433.
* Move utility functions into new source filesOllie Lho2004-03-171-0/+43
Corresponding to flashrom svn r6 and coreboot v2 svn r1428.
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