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path: root/src/flash/nor/cfi.c
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* NOR/CFI: identify memory accesses not using "bus_width".Antonio Borneo2010-05-161-0/+8
| | | | | | | | | | | | | | | | | | | | Since NOR flash devices does not handle "byte enable lanes", each read/write access involves the whole "chip_width". When multiple devices are in parallel, usually all chips are enabled during each access. All such cases are compatible with flash accesses at "bus_width" size. Access at "bus_width" size is mandatory for write access to avoid transferring of garbage values to flash. During read access the flash controller should take care, and discard unneeded bytes. Anyway, it is good practice to use "bus_width" size also for read. Every memory access that does not respect "bus_width" size is marked with a "FIXME" comment. Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
* NOR/CFI: simplify bufferwsize computationAntonio Borneo2010-05-161-39/+10
| | | | | | | | | | | | | | | | | | | | | | | | | Review and simplify computation of bufferwsize. Add comments about variables' meaning. The same code is present 3 times in the file. Current patch updates all the 3 instances. Step 1) Replace "switch(bank->chip_width) {...}". Illegal values of bank->chip_width are already dropped. For legal values, the code is equivalent to: bufferwsize = buffersize / bank->chip_width; Step 2) The above code replacement plus the following line: bufferwsize /= (bank->bus_width / bank->chip_width); is merged in a single formula: bufferwsize = (buffersize / bank->chip_width) / (bank->bus_width / bank->chip_width); and simplified as: bufferwsize = buffersize / bank->bus_width; Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
* NOR/CFI: check "flash bank" command argumentsAntonio Borneo2010-05-161-1/+11
| | | | | | | | | | | | | | | | | | Arguments chip_width and bus_width of command "flash bank" are not fully checked. While bus_width is later on redundantly checked in several other parts (e.g. in cfi_command_val()) and generates run-time error, chip_width is never checked, nor related to actual bus_width value. Added check to avoid: - (chip_width == 0), that would mean no memory chip at all, avoiding also division by zero e.g. in cfi_get_u8(); - (bus_width == 0), that would mean no bus at all; - unsupported cases of chip_width or bus_width value not power of 2; - unsupported case of chip width wider than bus. Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
* Fujitsu MBM29SL800TE flash supportKarl Kurbjun2010-05-111-0/+1
| | | | | | | | | | | | | | | | | Hi, This is my first post to the list. First, I would like to thank everyone for their work on OpenOCD, it is a great tool to work with. I have been using it to debug code on hardware for the Rockbox project (www.rockbox.org). The target that I primarily work with has a Spansion/Fujitsu NOR flash (MBM29SL800TE). I attached a patch that adds support for this flash. I hope it can be included in the main repository. If there is something that needs to be changed with the patch before inclusion please let me know. -Karl Kurbjun
* cfi: add Numonyx M29W128G reset workaroundSpencer Oliver2010-05-101-32/+35
| | | | | | | | The ST/Numonix M29W128G has an issue when a 0xff cmd is sent, it cause an internal undefined state. The workaround according to the Numonyx is to send another 0xf0 reset cmd Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>
* flash: stop caching protection stateØyvind Harboe2010-05-051-0/+11
| | | | | | | | | | | | | | There are a million reasons why cached protection state might be stale: power cycling of target, reset, code executing on the target, etc. The "flash protect_check" command is now gone. This is *always* executed when running a "flash info". As a bonus for more a more robust approach, lots of code could be deleted. Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
* cfi: fix error handling for protect fnØyvind Harboe2010-05-051-4/+4
| | | | | | No error was propagated. Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
* flash: less bogus errorsØyvind Harboe2010-05-041-2/+2
| | | | | | | Removed bogus errors when trying to allocate a large a target memory buffer as possible. Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
* cfi: made som info output debug outputØyvind Harboe2010-05-041-2/+2
| | | | | | | E.g. how much target memory that is used during flashing is debug info. Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
* NOR/CFI: remove redundant codeAntonio Borneo2010-04-151-6/+2
| | | | | | | | Arguments for "flash bank" command are already parsed and put in "bank" struct. Removed code to parse them again. Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
* NOR/CFI: fix order of arguments checkAntonio Borneo2010-04-151-2/+2
| | | | | | | | | | | | Syntax of "flash bank" command requires: - chip_width as CMD_ARGV[3] - bus_width as CMD_ARGV[4] Actual code swaps the arguments. Bug has no run time impact since wrong variables are only used to check value and both are checked against same constraint. Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
* NOR/CFI: review scope of functionsAntonio Borneo2010-04-101-3/+3
| | | | | | Add "static" qualifier to private functions. Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
* cfi: simplify and clearify codeAntonio Borneo2010-03-081-149/+75
| | | | | | | | | | | | | | | | At the end I have added comments /* FIXME: to be removed */ There are 3 lines in which my simplification is not complete due to data dependency with LOG_DEBUG() messages visible in the patch. Such log_debug has been introduced on Jan 22, 2007 with commit 4fc97d3f2726efa147cfdb0c456eace51550e1e3 during development activity in this file/procedure. From my point of view, these logs can be removed, since not part of a consistent flow of information. Alternatively, could be borrowed in the new cfi_send_command(), but this will increase verbosity. Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
* CFI: review print of Voltage valuesAntonio Borneo2010-03-061-6/+6
| | | | | | | | | | | | JEDEC standard reports Vpp integer part encoded as 4 bit HEX value. To print it using decimal digits, %u is required. Other voltage values are coded as BCD, so %x is appropriate. Code already prints one nibble at a time, so no need for field width and precision in format string. Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
* NOR: cleanup driver declsDavid Brownell2010-01-291-11/+11
| | | | | | Fix goofy struct indents. Function names *are* their addresses. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* ARM: use <target/arm.h> not armv4_5.hDavid Brownell2009-12-071-1/+1
| | | | | | | | | | | | | | Move most declarations in <target/armv4_5.h> to <target/arm.h> and update users. What's left in the older file is stuff that I think should be removed ... the old register cache access stuff, which makes it awkward to support microcontroller profile (Cortex-M) cores. The armv4_5_run_algorithm() declaration was moved too, even though it's not yet as generic as it probably ought to be. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* ARM: rename armv4_5_algorithm as arm_algorithmDavid Brownell2009-12-041-2/+2
| | | | Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* ARM: ARMV4_5_COMMON_MAGIC --> ARM_COMMON_MAGICDavid Brownell2009-12-041-2/+2
| | | | Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* ARM: rename ARMV4_5_MODE_* as ARM_MODE_*David Brownell2009-12-041-2/+2
| | | | Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* ARM: rename ARMV4_5_STATE_* as ARM_STATE_*David Brownell2009-12-041-2/+2
| | | | Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
* remove target.h from flash.hZachary T Welch2009-12-041-0/+1
| | | | | The flash.h header does not require the target.h header file, but its implementation source files do. Move it to flash/nor/imp.h.
* change #include "armv4_5.h" to <target/armv4_5.h>Zachary T Welch2009-12-031-1/+1
| | | | | | | | | | | | Changes from the flat namespace to heirarchical one. Instead of writing: #include "armv4_5.h" the following form should be used. #include <target/armv4_5.h> The exception is from .c files in the same directory.
* change #include "algorithm.h" to <target/algorithm.h>Zachary T Welch2009-12-031-1/+1
| | | | | | | | | | | | Changes from the flat namespace to heirarchical one. Instead of writing: #include "algorithm.h" the following form should be used. #include <target/algorithm.h> The exception is from .c files in the same directory.
* change #include "binarybuffer.h" to <helper/binarybuffer.h>Zachary T Welch2009-12-031-1/+1
| | | | | | | | | | | | Changes from the flat namespace to heirarchical one. Instead of writing: #include "binarybuffer.h" the following form should be used. #include <helper/binarybuffer.h> The exception is from .c files in the same directory.
* move nor drivers to src/flash/norZachary T Welch2009-12-021-0/+2630
Moves NOR flash drivers to 'src/flash/nor/'. Adds 'src/flash/nor/Makefile.am'. Builds 'libocdflashnor.la'.
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