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path: root/drivers/mtd/cfi_flash.c
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* cfi-mtd: Add cfi-mtd driver.Piotr Ziecik2008-11-24-0/+5
| | | | | | | | | | | | Add cfi-mtd driver, which exports CFI flash to MTD layer. This allows CFI flash devices to be used from MTD layer. Building of the new driver is controlled by CONFIG_FLASH_CFI_MTD option. Initialization is done by calling cfi_mtd_init() from flash_init(). Signed-off-by: Piotr Ziecik <kosmo@semihalf.com> Signed-off-by: Stefan Roese <sr@denx.de>
* cfi_flash: Add interface for flash verbosity controlPiotr Ziecik2008-11-24-11/+22
| | | | | | | | | | | Add interface for flash verbosity control. It allows to disable output from low-level flash API. It is useful when calling these low-level functions from context other than flash commands (for example the MTD/CFI interface implmentation). Signed-off-by: Piotr Ziecik <kosmo@semihalf.com> Signed-off-by: Stefan Roese <sr@denx.de>
* cfi_flash: Export flash_sector_size() function.Piotr Ziecik2008-11-24-2/+0
| | | | | | | | Export flash_sector_size() function from drivers/mtd/cfi_flash.c, so that it can be used in the upcoming cfi-mtd driver. Signed-off-by: Piotr Ziecik <kosmo@semihalf.com> Signed-off-by: Stefan Roese <sr@denx.de>
* cfi_flash: Make all flash access functions weakStefan Roese2008-11-24-7/+25
| | | | | | | | | | | | | | | | | This patch defines all flash access functions as weak so that they can be overridden by board specific versions. This will be used by the upcoming VCTH board support where the NOR FLASH unfortunately can't be accessed memory-mapped. Special accessor functions are needed here. To enable this weak functions you need to define CONFIG_CFI_FLASH_USE_WEAK_ACCESSORS in your board config header. Otherwise the "old" default functions will be used resulting in smaller code. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
* CFI Driver: Fix "flash not ready" problemWolfgang Denk2008-10-31-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a problem on systems where the NOR flash is attached to a 64 bit bus. The toggle bit detection in flash_toggle() is based on the assumption that the same flash address is read twice without any other interjacent flash accesses. However, on 32 bit systems the function flash_read64() [as currently implemented] does not perform an atomic 64 bit read - instead, this is broken down into two 32 bit read accesses on addresses "addr" and "addr + 4". So instead of reading a 64 bit value twice from "addr", we see a sequence of 4 32 bit reads from "addr", "addr + 4", "addr", and "addr + 4". The consequence is that flash_toggle() fails to work. This patch implements a simple, but somewhat ugly solution, as it avoids the use of flash_read64() in this critical place (by breaking it down manually into 32 bit read operations) instead of rewriting flash_read64() such to perform atomic 64 bit reads as one could expect. However, such a rewrite would require the use of floating point load operations, which becomes pretty complex: save MSR; set Floating Point Enable bit in MSR; use "lfd" instruction to perform atomic 64 bit read; use "stfd" to store value to temporary variable on stack; load u64 value from temporary variable; restore saved MSR; return u64 value; The benefit-cost ratio of such an implementation was considered too bad to actually attempt this, especially as we can expect that such an implementation would not only have a bigger memory footprint but also cause a performance degradation. Signed-off-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Stefan Roese <sr@denx.de>
* rename CFG_ macros to CONFIG_SYSJean-Christophe PLAGNIOL-VILLARD2008-10-18-51/+51
| | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* CFI: cfi_flash write fix for AMD legacyEd Swarthout2008-10-13-3/+5
| | | | | | | | The flash_unlock_seq requires a sector for AMD_LEGACY. Fix a retcode check typeo. Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com> Signed-off-by: Stefan Roese <sr@denx.de>
* cfi_flash: do not reset flash when probe failsMike Frysinger2008-10-02-1/+2
| | | | | | | | | | | | | | | The CFI flash driver starts at flash_init() which calls down into flash_get_size(). This starts by calling flash_detect_cfi(). If said function fails, flash_get_size() finishes by attempting to reset the flash. Unfortunately, it does this with an info->portwidth set to 0x10 which filters down into flash_make_cmd() and that happily smashes the stack by sticking info->portwidth bytes into a cfiword_t variable that lives on the stack. On a 64bit system you probably won't notice, but killing the last 8 bytes on a 32bit system usually leads to a corrupt return address. Which is what happens on a Blackfin system. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Stefan Roese <sr@denx.de>
* rename CFG_ENV macros to CONFIG_ENVJean-Christophe PLAGNIOL-VILLARD2008-09-10-8/+8
| | | | 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 printf errors under -DDEBUGAndrew Klossner2008-09-09-1/+1
| | | | | | | | | | | | Fix printf format-string/arg mismatches under -DDEBUG. These warnings occur with DEBUG defined for a platform using cpu/mpc85xx. Users of other architectures can unearth similar problems by adding the line "CFLAGS += -DDEBUG=1" in config.mk right after "CFLAGS += $(call cc-option,-fno-stack-protector)". Signed-off-by: Andrew Klossner <andrew@cesa.opbu.xerox.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
* CFI: Add CFI_CMDSET_INTEL_EXTENDED to fix flash_real_protect()Nick Spence2008-08-20-0/+1
| | | | | | | This patch fixes a missing vendor code in the flash_real_protect() function. Signed-off-by: Nick Spence <nick.spence@freescale.com> Signed-off-by: Stefan Roese <sr@denx.de>
* CFI: Fix AMD Legacy sector protectTsiChung Liew2008-08-20-3/+9
| | | | | | | | | New implement sector lock and unlock or softlock commands do not exist in AMD legacy flash. Thus, causing issue when erasing AMD legacy flash (such as lv040) Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com> Signed-off-by: Stefan Roese <sr@denx.de>
* Merge branch 'master' of /home/stefan/git/u-boot/u-boot into nextStefan Roese2008-08-14-9/+8
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| * drivers/mtd: Move conditional compilation to MakefileJean-Christophe PLAGNIOL-VILLARD2008-08-13-3/+0
| | | | | | | | | | | | rename CFG_FLASH_CFI_DRIVER to CONFIG_FLASH_CFI_DRIVER Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
| * CFI: allow for dynamically determined flash sizes and addressesWolfgang Denk2008-08-08-6/+8
| | | | | | | | | | | | | | | | | | | | | | The CFI driver allowed only for static initializers in the CFG_FLASH_BANKS_LIST definition, i. e. it did not allow to map several flash banks contiguously if the bank sizes were not known in advance, which kind of violates U-Boot's design philosophy. (will be used for example by the TQM8xxL boards) Signed-off-by: Wolfgang Denk <wd@denx.de>
* | cfi-flash: Added support to flash_real_protect for Atmel flash devicesRafael Campos2008-08-06-6/+43
|/ | | | | | | | | Some of the flash memories produced by ATMEL start in read-only mode. We need to unprotect it. This patch allows the AT49BV6416 to work with cfi_flash memories. Tested in the at91rm9200ek board. Signed-off-by: Rafael Campos Las Heras <rafael.campos@hanscan.com> Signed-off-by: Stefan Roese <sr@denx.de>
* cfi_flash: fix flash on BE machines with CFG_WRITE_SWAPPED_DATASebastian Siewior2008-07-17-1/+4
| | | | | | | | | | | | | | This got broken by commits 93c56f212c [cfi_flash: support of long cmd in U-boot.] That command needs to be in little endian format on BE machines with CFG_WRITE_SWAPPED_DATA. Without this patch, the command 0xf0 gets saved on stack as 0x00 00 00 f0 and 0x00 gets written into the cmdbuf in case portwidth = chipwidth = 8bit. Cc: Alexey Korolev <akorolev@infradead.org> Cc: Vasiliy Leonenko <vasiliy.leonenko@mail.ru> Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
* cfi_flash: make the command u32 onlySebastian Siewior2008-07-15-4/+4
| | | | | | | | | | | | | This got changed by commit 93c56f212c [cfi_flash: support of long cmd in U-boot.] Long is the wrong type because it will behave differently on 64bit machines in a way that is probably not expected. u32 should be enough. Cc: Alexey Korolev <akorolev@infradead.org> Cc: Vasiliy Leonenko <vasiliy.leonenko@mail.ru> Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
* cfi-flash: Fix problem in flash_toggle(), busy was not detected reliablyStefan Roese2008-06-19-8/+4
| | | | | | | | | | | | | This patch simplifies flash_toggle() (AMD commandset), which is used to detect if a FLASH device is still busy with erase/program operations. On 800MHz Canyonlands/Glacier boards (460EX/GT) the current implementation did not detect the busy state reliably, resulting in non erased sectors etc. This patch now simplifies this function by "just" comparing the complete data-word instead of ANDing it with the command-word (0x40) before the compatison. It is done the same way in the Linux implementation chip_ready() in cfi_cmdset_0002.c. Signed-off-by: Stefan Roese <sr@denx.de>
* Merge branch 'master' of git://www.denx.de/git/u-boot-cfi-flashWolfgang Denk2008-06-11-7/+34
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| * cfi_flash: enable M18 flash chips family support.Vasiliy Leoenenko2008-06-03-2/+21
| | | | | | | | | | | | | | | | Added new command set ID. Buffered write command processing is changed in order to support M18 flash chips family. Signed-off-by: Alexey Korolev <akorolev@infradead.org> Signed-off-by: Vasiliy Leonenko <vasiliy.leonenko@mail.ru>
| * cfi_flash: support of long cmd in U-boot.Vasiliy Leoenenko2008-06-03-7/+15
| | | | | | | | | | | | | | | | | | Some NOR flash chips needs support of commands with length grether than max value size of uchar. For example all M18 family chips use 0x1ff command in buffered write mode as value of program loops count. Signed-off-by: Alexey Korolev <akorolev@infradead.org> Signed-off-by: Vasiliy Leonenko <vasiliy.leonenko@mail.ru>
* | Fix warnings from gcc-4.3.0 build on a ppc hostKumar Gala2008-06-03-0/+2
|/ | | | | | | | | | | * The cfi_flash.c memset fix actual allows the board to boot so there is a bit more going on here than just resolving warnings associated with uninitialized variables. * include/asm/bitops.h:302: warning: '__swab32p' is static but used in inline function 'ext2_find_next_zero_bit' which is not static Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* cfi-flash: Add CFG_FLASH_AUTOPROTECT_LISTMatthias Fuchs2008-04-25-0/+17
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds a configurable flash auto protection list that can be used to make U-Boot protect flash regions in flash_init(). The idea has been discussed on the u-boot mailing list starting on Nov 18th, 2007. Even this patch brings a new feature it is used as a bugfix for 4xx platforms where flash_init() does not completely protect the monitor's flash range in all situations. U-Boot protects the flash range from CFG_MONITOR_BASE to (CFG_MONITOR_BASE + monitor_flash_len - 1) by default. This does not include the reset vector at 0xfffffffc. Example: #define CFG_FLASH_AUTOPROTECT_LIST {{0xfff80000, 0x80000}} This config option will auto protect the last 512k of flash that contains the bootloader on board like APC405 and PMC405. Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
* cfi_flash: Support buffered writes on non-standard Spansion NOR flashGuennadi Liakhovetski2008-04-12-30/+16
| | | | | | | | | | | Some NOR flash chip from Spansion, for example, the s29ws-n MirrorBit series require different addresses for buffered write commands. Define a configuration option to support buffered writes on those chips. A more elegant solution would be to automatically detect those chips by parsing their CFI records, but that would require introduction of a fixup table into the cfi_flash driver. Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
* MTD/CFI: flash_read64 is defined a weak function (for SPARC)Daniel Hellstrom2008-03-29-1/+3
| | | | | | | | | | | | | | | | | SPARC has implemented __raw_readq, it reads 64-bit from any 32-bit address. SPARC CPUs implement flash_read64 which calls __raw_readq. For current SPARC architectures (LEON2 and LEON3) each read from the FLASH must lead to a cache miss. This is because FLASH can not be set non-cacheable since program code resides there, and alternatively disabling cache is poor from performance view, or doing a cache flush between each read is even poorer. Forcing a cache miss on a SPARC is done by a special instruction "lda" - load alternative space, the alternative space number (ASI) is processor implementation spcific and can be found by including <asm/processor.h>. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
* MTD/CFI: Add support for 16bit legacy AMD flashTor Krill2008-03-28-9/+35
| | | | | | | | Add entry for 512Kx16 AMD flash to jedec_table. Read out 16bit device id if chipwidth is 16bit. Fixed coding style after Stefans feedback Signed-off-by: Tor Krill <tor@excito.com>
* CFI: Small cleanup for FLASH_SHOW_PROGRESSStefan Roese2008-03-19-13/+9
| | | | | | | | | With this patch we don't need that many #ifdef's in the code. It moves the subtraction into the macro and defines a NOP-macro when CONFIG_FLASH_SHOW_PROGRESS is not defined. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Gerald Van Baren <vanbaren@cideas.com>
* Flash programming progress countdown.Jerry Van Baren2008-03-19-1/+43
| | | | Signed-off-by: Gerald Van Baren <vanbaren@cideas.com>
* CFI: Do not use uninitialized cmd_resetMichael Schwingen2008-02-21-1/+6
| | | | | | | | | | | | | | | | | | | | Do not use uninitialized cmd_reset; issue both AMD and Intel reset commands instead From a short test, it looks like AMD-style flash roms treat *any* unknown command write as a reset, at least when in CFI Query mode, so issuing the Intel reset command to AMD-style flashs seems safe (from the small sample I have), plus the 3-cycle magic sequence should kick the state machine into the right state even without a reset command. Since the AMD-style flashs require the unlock sequence for real operation, I chose to try the AMD reset command first, so that Intel flashs do no see an invalid command prior to the CFI query. I have tested the patch on AM29LV320-style flashs from Fujitsu and Macronix, plus Intel StrataFlash. Signed-off-by: Michael Schwingen <michael@schwingen.org> Signed-off-by: Stefan Roese <sr@denx.de>
* CFI: Fix CONFIG_FLASH_CFI_LEGACY compilationMichael Schwingen2008-01-13-2/+2
| | | | | Signed-off-by: Michael Schwingen <michael@schwingen.org> Acked-by: Stefan Roese <sr@denx.de>
* cfi_flash: Fix bug in flash_isset() to use correct 32bit functionStefan Roese2008-01-02-1/+1
| | | | | | | This bug was detected on the LWMON5 target which has 2 Intel 16bit wide flash chips connected to a 32bit wide port. Signed-off-by: Stefan Roese <sr@denx.de>
* cfi_flash: Add missing check for erased dest to flash_write_cfibuffer()Stefan Roese2007-12-27-1/+51
| | | | | | | | | The check for an sufficiently erased destination was missing in the buffered write function of the cfi flash driver (when CFG_FLASH_USE_BUFFER_WRITE is defined). This patch adds this check to that writing to such a region will fail with the currect error message. Signed-off-by: Stefan Roese <sr@denx.de>
* cfi_flash: Add manufacturer-specific fixupsHaavard Skinnemoen2007-12-17-14/+53
| | | | | | | | | | | | | | | | | | Run fixups based on the JEDEC manufacturer ID independent of the command set ID. This changes current behaviour: Previously, geometry reversal for AMD chips were done based on the command set ID, while they are now done based on the JEDEC manufacturer and device ID. Also add fixup for top-boot Atmel chips. A fixup is needed for AT49BV6416(T) too, but since u-boot currently only reads the low byte of the device ID, there's no way to tell it apart from AT49BV642D, which should not have this fixup. Since AT49BV642D support is necessary to get ATNGW100 board support into mainline, I've commented out the fixup for now. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* cfi_flash: Add cmdset-specific init functionsHaavard Skinnemoen2007-12-17-63/+111
| | | | | | | | | Move things like reading JEDEC IDs and fixing up geometry reversal into separate functions. The geometry reversal fixup is now performed by altering the qry structure directly, which makes the sector init code slightly cleaner. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* cfi_flash: Read whole QRY structure in one goHaavard Skinnemoen2007-12-17-86/+90
| | | | | | | | Read out the whole CFI Standard Query structure after successful cfi identification. This allows subsequent code to access this information directly without having to go through flash_read_uchar() and friends. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* cfi_flash: Use map_physmem() and unmap_physmem()Haavard Skinnemoen2007-12-13-60/+109
| | | | | | | | Use map_physmem() and unmap_physmem() to convert from physical to virtual addresses. This gives the arch a chance to provide an uncached mapping for flash accesses. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* cfi_flash: Introduce read and write accessorsHaavard Skinnemoen2007-12-13-78/+127
| | | | | | | | | Introduce flash_read{8,16,32,64) and flash_write{8,16,32,64} and use them to access the flash memory. This makes it clearer when the flash is actually being accessed; merely dereferencing a volatile pointer looks just like any other kind of access. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* cfi_flash: Reorder functions and eliminate extra prototypesHaavard Skinnemoen2007-12-13-687/+656
| | | | | | | | | Reorder the functions in cfi_flash.c so that each function only uses functions that have been defined before it. This allows the static prototype declarations near the top to be eliminated and might allow gcc to do a better job inlining functions. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* cfi_flash: Make some needlessly global functions staticHaavard Skinnemoen2007-12-13-7/+9
| | | | | | Make functions not declared in any header file static. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* cfi_flash: Break long linesHaavard Skinnemoen2007-12-13-115/+189
| | | | | | | | | This patch tries to keep all lines in the cfi_flash driver below 80 columns. There are a few lines left which don't fit this requirement because I couldn't find any trivial way to break them (i.e. it would take some restructuring, which I intend to do in a later patch.) Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
* CFI: synchronize command offsets with Linux CFI driverBartlomiej Sieka2007-12-13-3/+20
| | | | | | Fixes non-working CFI Flash on the Inka4x0 board. Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>
* CFI: support JEDEC flash roms in CFI-flash frameworkMichael Schwingen2007-12-08-12/+98
| | | | | | | | | The following patch adds support for non-CFI flash ROMS, by hooking into the CFI flash code and using most of its code, as recently discussed here in the thread "Mixing CFI and non-CFI flashs". Signed-off-by: Michael Schwingen <michael@schwingen.org> Signed-off-by: Stefan Roese <sr@denx.de>
* drivers/mtd : move mtd drivers to drivers/mtdJean-Christophe PLAGNIOL-VILLARD2007-11-25-0/+1528
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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