summaryrefslogtreecommitdiff
path: root/common/env_flash.c
Commit message (Collapse)AuthorAgeLines
* env_flash: Disable debug print statementsPeter Tyser2010-10-23-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With debug the follow is printed: => saveenv Saving Environment to Flash... Data to save 0x18000 Data (start 0xfff48000, len 0x18000) saved at 0x7fe63f20 Protect off FFF40000 ... FFF5FFFF Un-Protected 1 sectors Erasing Flash... . done Erased 1 sectors Writing to Flash... Restoring the rest of data to 0xfff48000 len 0x18000 done Protected 1 sectors => Without debug: => saveenv Saving Environment to Flash... Un-Protected 1 sectors Erasing Flash... . done Erased 1 sectors Writing to Flash... done Protected 1 sectors => Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
* New implementation for internal handling of environment variables.Wolfgang Denk2010-09-19-114/+131
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Motivation: * Old environment code used a pessimizing implementation: - variable lookup used linear search => slow - changed/added variables were added at the end, i. e. most frequently used variables had the slowest access times => slow - each setenv() would calculate the CRC32 checksum over the whole environment block => slow * "redundant" envrionment was locked down to two copies * No easy way to implement features like "reset to factory defaults", or to select one out of several pre-defined (previously saved) sets of environment settings ("profiles") * No easy way to import or export environment settings ====================================================================== API Changes: - Variable names starting with '#' are no longer allowed I didn't find any such variable names being used; it is highly recommended to follow standard conventions and start variable names with an alphanumeric character - "printenv" will now print a backslash at the end of all but the last lines of a multi-line variable value. Multi-line variables have never been formally defined, allthough there is no reason not to use them. Now we define rules how to deal with them, allowing for import and export. - Function forceenv() and the related code in saveenv() was removed. At the moment this is causing build problems for the only user of this code (schmoogie - which has no entry in MAINTAINERS); may be fixed later by implementing the "env set -f" feature. Inconsistencies: - "printenv" will '\\'-escape the '\n' in multi-line variables, while "printenv var" will not do that. ====================================================================== Advantages: - "printenv" output much better readable (sorted) - faster! - extendable (additional variable properties can be added) - new, powerful features like "factory reset" or easy switching between several different environment settings ("profiles") Disadvantages: - Image size grows by typically 5...7 KiB (might shrink a bit again on systems with redundant environment with a following patch series) ====================================================================== Implemented: - env command with subcommands: - env print [arg ...] same as "printenv": print environment - env set [-f] name [arg ...] same as "setenv": set (and delete) environment variables ["-f" - force setting even for read-only variables - not implemented yet.] - end delete [-f] name not implemented yet ["-f" - force delete even for read-only variables] - env save same as "saveenv": save environment - env export [-t | -b | -c] addr [size] export internal representation (hash table) in formats usable for persistent storage or processing: -t: export as text format; if size is given, data will be padded with '\0' bytes; if not, one terminating '\0' will be added (which is included in the "filesize" setting so you can for exmple copy this to flash and keep the termination). -b: export as binary format (name=value pairs separated by '\0', list end marked by double "\0\0") -c: export as checksum protected environment format as used for example by "saveenv" command addr: memory address where environment gets stored size: size of output buffer With "-c" and size is NOT given, then the export command will format the data as currently used for the persistent storage, i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and prepend a valid CRC32 checksum and, in case of resundant environment, a "current" redundancy flag. If size is given, this value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32 checksum and redundancy flag will be inserted. With "-b" and "-t", always only the real data (including a terminating '\0' byte) will be written; here the optional size argument will be used to make sure not to overflow the user provided buffer; the command will abort if the size is not sufficient. Any remainign space will be '\0' padded. On successful return, the variable "filesize" will be set. Note that filesize includes the trailing/terminating '\0' byte(s). Usage szenario: create a text snapshot/backup of the current settings: => env export -t 100000 => era ${backup_addr} +${filesize} => cp.b 100000 ${backup_addr} ${filesize} Re-import this snapshot, deleting all other settings: => env import -d -t ${backup_addr} - env import [-d] [-t | -b | -c] addr [size] import external format (text or binary) into hash table, optionally deleting existing values: -d: delete existing environment before importing; otherwise overwrite / append to existion definitions -t: assume text format; either "size" must be given or the text data must be '\0' terminated -b: assume binary format ('\0' separated, "\0\0" terminated) -c: assume checksum protected environment format addr: memory address to read from size: length of input data; if missing, proper '\0' termination is mandatory - env default -f reset default environment: drop all environment settings and load default environment - env ask name [message] [size] same as "askenv": ask for environment variable - env edit name same as "editenv": edit environment variable - env run same as "run": run commands in an environment variable ====================================================================== TODO: - drop default env as implemented now; provide a text file based initialization instead (eventually using several text files to incrementally build it from common blocks) and a tool to convert it into a binary blob / object file. - It would be nice if we could add wildcard support for environment variables; this is needed for variable name auto-completion, but it would also be nice to be able to say "printenv ip*" or "printenv *addr*" - Some boards don't link any more due to the grown code size: DU405, canyonlands, sequoia, socrates. => cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>, Stefan Roese <sr@denx.de>, Heiko Schocher <hs@denx.de> - Dropping forceenv() causes build problems on schmoogie => cc: Sergey Kubushyn <ksi@koi8.net> - Build tested on PPC and ARM only; runtime tested with NOR and NAND flash only => needs testing!! Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Matthias Fuchs <matthias.fuchs@esd-electronics.com>, Cc: Stefan Roese <sr@denx.de>, Cc: Heiko Schocher <hs@denx.de> Cc: Sergey Kubushyn <ksi@koi8.net>
* Redundant environment: move flag definitions to header fileWolfgang Denk2010-07-04-3/+0
| | | | | | | Instead of defining the flags sevaral times in different source files (which is error prone), move them to a central place in a header file. Signed-off-by: Wolfgang Denk <wd@denx.de>
* shannon/INFERNO: fix special handling of environment configurationWolfgang Denk2010-07-04-12/+0
| | | | | | | | | | | Remove some INFERNO related #ifdef's from common environment code by fixing the board configuration settings (add CONFIG_ENV_SECT_SIZE). While we are at it, fix comment which incorrectly talks about 4 KB environment size, while it's actually 0x4000 = 16 KiB. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Rolf Offermanns <rof@sysgo.de>
* env: kill off default_environment_sizeMike Frysinger2009-08-09-1/+0
| | | | | | | | | The only environment type that uses this variable is spi flash, and that is only because it is reimplementing the common set_default_env() function. So fix the spi flash code and kill off the default_environment_size in the process. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* rename CONFIG_CMD_ENV to CONFIG_CMD_SAVEENVMike Frysinger2009-02-18-2/+2
| | | | | | | | The CONFIG_CMD_ENV option controls enablement of the `saveenv` command rather than a generic "env" command, or anything else related to the environment. So, let's make sure the define is named accordingly. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* rename CFG_ENV macros to CONFIG_ENVJean-Christophe PLAGNIOL-VILLARD2008-09-10-42/+42
| | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* env_flash: Move conditional compilation to MakefileJean-Christophe PLAGNIOL-VILLARD2008-09-10-5/+0
| | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* rename CFG_ENV_IS_IN_FLASH in CONFIG_ENV_IS_IN_FLASHJean-Christophe PLAGNIOL-VILLARD2008-09-10-2/+2
| | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* fix building when saveenv is disabled in some setupsMike Frysinger2008-05-04-0/+2
| | | | | | | | | | | If you enable environment in the flash, but disable the embedded option, and you disable the saveenv command, then the #if nested logic will trigger a compile failure: env_flash.c: In function 'env_relocate_spec': env_flash.c:399: error: 'flash_addr' undeclared (first use in this function) The fix is to add CMD_SAVEENV ifdef protection like everywhere else. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* Fix compilation error for omap2420h4_config.Dirk Behme2007-08-29-19/+1
| | | | | | | omap2420h4 switched to cfi, so remove old (already disabled) flash.c and flash_probe() calls in env_flash.c. Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
* common/: Remove lingering references to CFG_CMD_* symbols.Jon Loeliger2007-07-10-1/+1
| | | | | | | | Fixed some broken instances of "#ifdef CMD_CFG_IDE" too. Those always evaluated TRUE, and thus were always compiled even when IDE really wasn't defined/wanted. Signed-off-by: Jon Loeliger <jdl@freescale.com>
* common/* non-cmd*: Remove obsolete references to CONFIG_COMMANDSJon Loeliger2007-07-08-1/+1
| | | | Signed-off-by: Jon Loeliger <jdl@freescale.com>
* common/ non-cmd: Augment CONFIG_COMMANDS tests with defined(CONFIG_CMD_*).Jon Loeliger2007-07-04-1/+1
| | | | | | | | | | | | | | This is a compatibility step that allows both the older form and the new form to co-exist for a while until the older can be removed entirely. All transformations are of the form: Before: #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT) After: #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT) || defined(CONFIG_CMD_AUTOSCRIPT) Signed-off-by: Jon Loeliger <jdl@freescale.com>
* GCC-4.x fixes: clean up global data pointer initialization for all boards.Wolfgang Denk2006-03-31-6/+2
|
* Cleanup for GCC-4.xWolfgang Denk2005-10-13-3/+3
|
* * Patches by Richard Woodruff, 01 Oct 2004:wdenk2005-01-09-9/+25
| | | | | | | | add support for the TI OMAP2420 processor and its H4 reference board * Patch by Christian Pellegrin, 24 Sep 2004: Added support for NE2000 compatible (DP8390, DP83902) NICs.
* * Patch by Yuli Barcohen, 4 Mar 2004:wdenk2004-03-14-41/+25
| | | | | | | | | | | | | | | | | Fix problems with GCC 3.3.x which changed handling of global variables explicitly initialized to zero (now in .bss instead of .data as before). * Patch by Leon Kukovec, 02 Mar 2004: add strswab() to fix IDE LBA capacity, firmware and model numbers on little endian machines * Patch by Masami Komiya, 02 Mar 2004: - Remove get_ticks() from NFS code - Add verification of RPC transaction ID * Patch by Pierre Aubert, 02 Mar 2004: cleanup for IDE and USB drivers for MPC5200
* * Patch by Rune Torgersen, 27 Feb 2004:wdenk2004-03-13-8/+8
| | | | | | | | | | | | | | | | | - Added LBA48 support (CONFIG_LBA48 & CFG_64BIT_LBA) - Added support for 64bit printing in vsprintf (CFG_64BIT_VSPRINTF) - Added support for 64bit strtoul (CFG_64BIT_STRTOUL) * Patch by Masami Komiya, 27 Feb 2004: Fix rarpboot: add autoload by NFS * Patch by Dan Eisenhut, 26 Feb 2004: fix flash_write return value in saveenv * Patch by Stephan Linz, 11 Dec 2003 expand config.mk to avoid trigraph warnings on NIOS * Rename "BMS2003" board into "HMI10"
* * Code cleanup:wdenk2003-06-27-15/+14
| | | | | | | | | - remove trailing white space, trailing empty lines, C++ comments, etc. - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c) * Patches by Kenneth Johansson, 25 Jun 2003: - major rework of command structure (work done mostly by Michal Cendrowski and Joakim Kristiansen)
* Fix problem with default #defineswdenk2003-03-06-1/+3
| | | | Cleanup compiler warning
* * Patches by Robert Schwebel, 06 Mar 2003:wdenk2003-03-06-7/+36
| | | | | | | | | | | - fix bug in BOOTP code (must use NetCopyIP) - update of CSB226 port - clear BSS segment on XScale - added support for i2c_init_board() function - update to the Innokom plattform * Extend support for redundand environments for configurations where environment size < sector size
* * Patch by Robert Schwebel, 21 Jan 2003:wdenk2003-03-06-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add support for Innokom board - Don't complain if "install" fails - README cleanup (remove duplicated lines) - Update PXA header files * Add documentation for existing POST code (doc/README.POST) * Patch by Laudney Ren, 15 Jan 2003: Fix handling of redundand environment in "tools/envcrc.c" * Patch by Detlev Zundel, 28 Feb 2003: Add bedbug support for 824x systems * Add support for 16 MB flash configuration of TRAB board * Patch by Erwin Rol, 27 Feb 2003: Add support for RTEMS * Add image information to README * Fix dual PCMCIA slot support (when running with just one slot populated) * Add VFD type detection to trab board * extend drivers/cs8900.c driver to synchronize ethaddr environment variable with value in the EEPROM
* Initial revisionwdenk2002-11-03-0/+377
generated by cgit v1.1 at 2024-12-21 06:57:35 +0000