Commit graph

95 commits

Author SHA1 Message Date
Tao Hou
85c344e5f9 cfi: fix the incomplete erased status check in buffer write
Without the fix, flash_write_cfibuffer will terminate the erased
status check once an all-0xFF word has been found instead of
continuing the erased status check utill the first non-0xFF word.

Signed-off-by: Tao Hou <hotforest@gmail.com>
Cc: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2012-03-21 16:25:33 +01:00
Jens Scharsig (BuS Elektronik)
a9f5faba6e * Fix: watchdog timed out, if flash blank (0xFF) blocks
The current implementation of cfi_flash uses udelay to reset watchdog.
If several blocks are blank (0xff filled) the watchdog timed out.
The reason is, udelay is never called, if flash device is ready to fast.

e.g.
     mw.w $(copy_addr) FFFF 10000;cp.b $(copy_addr) 10880000 20000

     -> watchdog timed out

     mw.w $(copy_addr) 0000 10000;cp.b $(copy_addr) 10880000 20000

     -> watchdog not timed out

This patch adds an extra watchdog reset in front of flash ready check.

Signed-off-by: Jens Scharsig (BuS Elektronik) <esw@bus-elektronik.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2012-02-09 09:45:40 +01:00
Marek Vasut
31d34143bb GCC4.6: Squash warning in cfi_flash.c
cfi_flash.c: In function 'flash_protect_default':
cfi_flash.c:2152: warning: format '%08x' expects type 'unsigned int', but
argument 2 has type 'ulong'
cfi_flash.c:2152: warning: format '%08x' expects type 'unsigned int', but
argument 3 has type 'long unsigned int'

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Scott Wood <scottwood@freescale.com>
2011-10-27 23:54:04 +02:00
Graeme Russ
e110c4fe44 Timer: Allow reset_timer() only for systems with low resolution timers 2011-07-26 14:52:53 +02:00
Mike Frysinger
4c2105cb9f cfi_flash: reverse geometry for newer STM parts
For newer STM parts where CFI >= 1.1, there is a byte in the extended
structure that declares the flash layout type (just like the AMD parts),
so key off of that to find out when we need to reverse the geometry.

This can be seen with M29W640 parts where U-Boot does:
Bank # 1: CFI conformant FLASH (16 x 16)  Size: 8 MB in 135 Sectors
  AMD Standard command set, Manufacturer ID: 0x20, Device ID: 0x22ED
  Erase timeout: 8192 ms, write timeout: 1 ms
  Buffer write timeout: 1 ms, buffer size: 16 bytes

  Sector Start Addresses:
  20000000   RO   20002000   RO   20004000   RO   20006000   RO   20008000   RO
  2000A000   RO   2000C000   RO   2000E000   RO   20010000   RO   20020000   RO
  ...

But Linux does:
physmap platform flash device: 00800000 at 20000000
physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank.
                 Manufacturer ID 0x000020 Chip ID 0x0022ed
physmap-flash.0: Swapping erase regions for top-boot CFI table.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Stefan Roese <sr@denx.de>
2011-06-29 10:05:19 +02:00
Aaron Williams
a90b9575f3 cfi_flash driver - Add delay after reset command
I ran into a problem where the reset was failing except when I enabled
debugging support.  After talking with Garret Swalling at Spansion I
was told that the GL-N series of devices require a 500ns wait for the
reset to complete.  The below patch adds a 1us delay after all reset
commands.

-Aaron Williams

Signed-off-by: Aaron Williams <aaron.williams@caviumnetworks.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2011-04-21 15:51:49 +02:00
Heiko Schocher
5b448adb4b mtd, cfi: read AMD 3-byte (expanded) device ids on 16bit devices
tested on the a4m072 board with a S29GL512P flash.

flinfo without this patch
Bank # 1: CFI conformant flash (16 x 16)  Size: 32 MB in 256 Sectors
  AMD Standard command set, Manufacturer ID: 0x01, Device ID: 0x227E
  Erase timeout: 16384 ms, write timeout: 2 ms
  Buffer write timeout: 5 ms, buffer size: 32 bytes
[...]

flinfo with this patch
Bank # 1: CFI conformant flash (16 x 16)  Size: 32 MB in 256 Sectors
  AMD Standard command set, Manufacturer ID: 0x01, Device ID: 0x227E2301
  Erase timeout: 16384 ms, write timeout: 2 ms
  Buffer write timeout: 5 ms, buffer size: 32 bytes
[...]

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2011-04-21 15:51:39 +02:00
Mike Frysinger
6a011ce851 cfi_flash: reverse geometry for M29W800DT parts
The M29W800DT parts also report their geometry with the sector layout
reversed.  So add that ID to the flash_fixup_stm function.

Otherwise, we get:
bfin> flinfo

Bank # 1: CFI conformant FLASH (16 x 16)  Size: 1 MB in 19 Sectors
  AMD Standard command set, Manufacturer ID: 0x20, Device ID: 0x22D7
  Erase timeout: 8192 ms, write timeout: 1 ms

  Sector Start Addresses:
  20000000        20004000        20006000        20008000        20010000
  20020000        20030000        20040000        20050000        20060000
  20070000        20080000        20090000        200A0000        200B0000
  200C0000        200D0000        200E0000        200F0000

Reported-by: Jianxi Fu <fujianxi@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Stefan Roese <sr@denx.de>
2011-04-21 15:51:17 +02:00
Peter Tyser
2c51983b81 cfi_flash: Fix CONFIG_SYS_FLASH_AUTOPROTECT_LIST usage
Commit 6ee1416e81 (mtd, cfi: introduce
void flash_protect_default(void)) introduced a bug which resulted in
boards that define CONFIG_SYS_FLASH_AUTOPROTECT_LIST not compiling with
the the following errors and warning:
  ptyser@petert u-boot $ make -s xpedite520x
  Configuring for xpedite520x board...
  cfi_flash.c: In function 'flash_protect_default':
  cfi_flash.c:2118: error: 'i' undeclared (first use in this function)
  cfi_flash.c:2118: error: (Each undeclared identifier is reported only once
  cfi_flash.c:2118: error: for each function it appears in.)
  cfi_flash.c:2118: error: 'apl' undeclared (first use in this function)
  cfi_flash.c:2118: error: invalid application of 'sizeof' to incomplete type 'struct apl_s'
  cfi_flash.c: In function 'flash_init':
  cfi_flash.c:2137: warning: unused variable 'apl'

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Reported-by: Kumar Gala <galak@kernel.crashing.org>
Cc: Heiko Schocher <hs@denx.de>
2011-04-13 21:50:25 +02:00
Heiko Schocher
6ee1416e81 mtd, cfi: introduce void flash_protect_default(void)
collect code which protects default sectors in a function, called
flash_protect_default. So boardspecific code can call it too.

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2011-04-07 10:20:22 +02:00
Mario Schuknecht
2c9f48af73 cfi_flash: use AMD fixups for AMIC (e.g. A29L160A series) too
Signed-off-by: Mario Schuknecht <m.schuknecht@dresearch.de>
Signed-off-by: Steffen Sledz <sledz@dresearch.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2011-04-07 10:10:47 +02:00
Martin Krause
af56730153 cfi_flash: fix bug with flash banks with different sector numbers
The function find_sector() does not take into account if the flash bank
has changed since the last call. This could lead to illegal accesses inside
and beyond the flash_info_t info strcture. For example if the current
flash bank has less sectors than the last used flash bank.

This patch adds two cheks. One that insures, that the current sector does
not exceed the allowed maximum (which is always a good idea). And one that
checks if the current access is to the same flash bank as the last access.
If not, the search loop will start with sector 0.

Signed-off-by: Martin Krause <martin.krause@tqs.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2011-03-28 19:06:51 +02:00
Peter Tyser
eddf52b593 Replace "FLASH" strings with "Flash" or "flash"
There's no compelling reason to have the output on bootup or the
"flinfo" command print "flash" in uppercase, so use the proper case
where appropriate.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2011-01-19 00:02:37 +01:00
Mike Frysinger
4ffeab2cc0 cfi_flash: avoid flash_verbose when possible
The flash_verbose logic is only used by the CFI MTD layer, so if we aren't
using that, disable the logic completely.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-01-09 18:05:11 +01:00
Stefan Roese
6f726f9584 cfi_flash: Add optional config register write to cfi-detection
This patch adds the possibility to (optinally) write to the
flash configuration register. The Intel style CFI chips support
such a register that can be used to configure the operation
mode to a non-default value.

This method will be used by the t3corp board, which needs to
configure the DS617 Xilinx flash for async read mode.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-12-17 09:56:05 +01:00
Stefan Roese
4d2ca9d6a0 cfi_flash: Use flash_read32() in sector_erased()
The function sector_erased() is modified to not use pointer
access, but to use the correct accessor functions. This fixes a
problem on the t3corp board with the Xilinx DS617 flash chips. Here
a board specific accessor function is needed to read from flash
in 32bit mode. This patch enables such an operation mode.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-12-17 09:54:10 +01:00
Stefan Roese
df4e813b72 cfi_flash: Fix problems with status/id read mode
This patch adds some calls to set the flash chip in the read-status-
register- or read-id-mode before the corresponding register is
read back. This problem was detected while porting the common CFI
driver to support the Xilinx DS617 flash chips.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-12-17 09:54:03 +01:00
Anatolij Gustschin
34bbb8fb46 cfi_flash: fix bug introduced while recent change to flash_get_size()
commit ec50a8e389
"cfi_flash: handle 'chip size exceeds address window' situation"
added 3rd argument to flash_get_size() but didn't fix all the
function calls from the board specific code. Many boards have
their own flash_get_size() definitions in the board code and
use them there, but some boards (e.g. tqm834x, tqm85xx, pdm360ng)
use flash_get_size() from the cfi_flash.c driver.

The bug shows up if the value of the "max_size" argument (which
is not defined when calling the function with two arguments)
happens to be less than "info->size". In this case on the
affected boards we end up with a bank of reduced size and
in the worst case might even be not able to update U-Boot or
to boot the kernel from flash:

=> fli

Bank # 1: CFI conformant FLASH (32 x 16)  Size: 0 kB in 1 Sectors
  AMD Standard command set, Manufacturer ID: 0x01, Device ID: 0x227E
  Erase timeout: 4096 ms, write timeout: 1 ms
  Buffer write timeout: 3 ms, buffer size: 64 bytes

  Sector Start Addresses:
  F0000000   RO

Bank # 2: CFI conformant FLASH (32 x 16)  Size: 128 MB in 512 Sectors
  AMD Standard command set, Manufacturer ID: 0x01, Device ID: 0x227E
  Erase timeout: 4096 ms, write timeout: 1 ms
  Buffer write timeout: 3 ms, buffer size: 64 bytes

  Sector Start Addresses:
  F8000000        F8040000        F8080000        F80C0000        F8100000
  F8140000        F8180000        F81C0000        F8200000        F8240000
  ...

E.g., updating U-Boot is not possible now:

=> protect off ${u-boot_addr} +${u-boot_size}
Error: end address (0xf007ffff) not in flash!
Bad address format
=> era ${u-boot_addr} +${u-boot_size}
Error: end address (0xf007ffff) not in flash!
Bad address format

This patch removes the 3rd argument of flash_get_size() again
and sets "max_size" in the function itself instead of passing
it as a function argument.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
2010-11-28 19:41:11 +01:00
Ilya Yanok
ec50a8e389 cfi_flash: handle 'chip size exceeds address window' situation
On some boards we have flash mapped high in the address space with
considerably small window (say 0xFE000000 and 32MB). When we install
bigger chip (say 64MB) on such a board strange things happen
(flash_write() doesn't work at all, for ex). That's because cfi_flash
driver doesn't care about window size at all.
Of course, cleanest solution would probably be to just extend address
window to be able to map the whole flash but for legacy/compatibility
reasons some people prefer just truncate the flash size and never use
the upper part.
This patch adds an option for cfi_flash driver to handle this situation
properly. To achieve this we add the new function cfi_flash_bank_size()
which can be provided by the board code and weak-aliased to default
implementation that returns value from the CONFIG_SYS_FLASH_BANKS_SIZES
array if it's defined or 0 otherwise (the last case is added for
compatibility).
If non-zero flash bank size is provided and detected chip size is bigger
than provided address window size the warning will be displayed and
flash chip will be truncated.

Signed-off-by: Ilya Yanok <yanok@emcraft.com>

Changed cfi_flash_bank_size() return type to unsigned long
to match caller function.
Signed-off-by: Wolfgang Denk <wd@denx.de>
2010-10-23 21:04:49 +02:00
John Schmoller
0e3fa01a63 cfi_flash: Fix "Unknown FLASH" error message
When a CFI flash chip could not be detected an error message similar to
the following would be printed on bootup:

 FLASH: ## Unknown FLASH on Bank 1 - Size = 0x01000000 = 0 MB

The printf incorrectly converted the flash size into megabytes.  This
patch fixes the printing of the flash size in megabytes:

 FLASH: ## Unknown FLASH on Bank 1 - Size = 0x01000000 = 16 MB

Signed-off-by: John Schmoller <jschmoller@xes-inc.com>
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2010-10-12 08:59:15 +02:00
Stefan Roese
ca5def3f30 cfi_flash: Simplify dynamic flash bank number detection
This patch simplifies the use of CONFIG_SYS_MAX_FLASH_BANKS_DETECT. By
moving these optional variables and defines into the common code, board
specific code is minimized. Currently only the following board use
this feature:

APC405, IDS8247, TQM834x

And IDS8247 doesn't seem to really need this feature, since its not
updating the bank number variable at all. So this patch removes the
definition of CONFIG_SYS_MAX_FLASH_BANKS_DETECT from this board port.

This new framework will be used by the upcoming lwmon5 update as well.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Heiko Schocher <hs@denx.de>
Cc: Matthias Fuchs <matthias.fuchs@esd.eu>
2010-09-20 15:08:51 +02:00
Stefan Roese
b00e19cc6b cfi_flash: Add weak default for cfi_flash_bank_addr()
cfi_flash_bank_addr(int bank_nr) returns the base addresses of the
requested bank. Introducing this weak default enables boards to override
this functions with a board specific version when required.

This feature will be used in the lwmon5 board update, supporting runtime
detection of 2 board revisions with different flash layouts.

Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-20 15:08:43 +02:00
Stefan Roese
cba34aafde cfi_flash: Simplify flash_get_info()
This patch removes an unecessary check in the return statement. This is
not needed, since "info" is initializes to NULL. And "info" will not be
written to again, if the flash address is not found.

Additionally "info" is not initialized to "0" but to "NULL".

Signed-off-by: Stefan Roese <sr@denx.de>
2010-09-20 15:08:33 +02:00
Philippe De Muyter
54652991ca Work around bug in Numonyx P33/P30 256-Mbit 65nm flash chips.
I have "ported" U-boot to a in house made board with Numonyx Axcell P33/P30
256-Mbit 65nm flash chips.

After some time :( searching for bugs in our board or soft, we have
discovered that those chips have a small but annoying bug, documented in
"Numonyx Axcell P33/P30 256-Mbit Specification Update"

It states :
When customer uses [...] block unlock, the block lock status might be
altered inadvertently. Lock status might be set to either 01h or 03h
unexpectedly (00h as expected data), which leads to program/erase failure
on certain blocks.

A working workaround is given, which I have applied and tested with success :

Workaround:  If the interval between 60h and its subsequent command
	     can be guaranteed within 20us, Option I is recommended,
	     otherwise Option II (involves hardware) should be selected.
Option I: The table below lists the detail command sequences:
Command
	      Data bus           Address bus       Remarks
Sequence
  1              90h            Block Address
						   Read Lock Status
  2             Read         Block Address + 02h
 (2)(3)                                      (1)
3                60h           Block Address
 (2)(3)                                      (1)   Lock/Unlock/RCR Configuration
4           D0h/01h/03h        Block Address
Notes:
(1) Block Address refers to RCR configuration data only when the 60h
    command sequence is used to set RCR register combined with 03h
    subsequent command.
(2) For the third and fourth command sequences, the Block Address must
    be the same.
(3) The interval between 60h command and its subsequent D0h/01h/2Fh/03h
    commands should be less than 20us.

And here is a log comparison of a simple (destructive) flash test without
and with the workaround.

 diff without-numonyx-workaround.log with-numonyx-workaround.log
 -U-Boot 2010.06-00696-g22b002c-dirty (Aug 16 2010 - 15:07:47)
 +U-Boot 2010.06-00696-g22b002c-dirty (Aug 16 2010 - 15:25:19)

  CPU:   Freescale MCF5484
         CPU CLK 200 MHz BUS CLK 100 MHz
  Board: Macq Electronique ME2060
  I2C:   ready
  DRAM:  64 MiB
  FLASH: 32 MiB
  In:    serial
  Out:   serial
  Err:   serial
  Net:   FEC0, FEC1
  -> flinfo

  Bank # 1: CFI conformant FLASH (16 x 16)  Size: 32 MB in 259 Sectors
    Intel Extended command set, Manufacturer ID: 0x89, Device ID: 0x8922
    Erase timeout: 4096 ms, write timeout: 1 ms
    Buffer write timeout: 5 ms, buffer size: 1024 bytes

    Sector Start Addresses:
    FE000000 RO   FE008000 RO   FE010000 RO   FE018000 RO   FE020000 RO
    FE040000 RO   FE060000 RO   FE080000 RO   FE0A0000 RO   FE0C0000 RO
    ...
    FFF80000 RO   FFFA0000 RO   FFFC0000 RO   FFFE0000 RO
  -> protect off all
  Un-Protect Flash Bank # 1
  ................... done
  -> erase all
  Erase Flash Bank # 1
  ................... done
  -> cp.b 1000000 fe000000 2000000
 -Copy to Flash... Flash not Erased
 +Copy to Flash... done
  ->

Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Stefan Roese <sr@denx.de>
2010-08-18 09:09:00 +02:00
Stefan Roese
70084df712 cfi_flash: Cleanup flash_print_info()
This patch does the following:

- Extract code to detect if sector is erased into function
  sector_erased().
- Because of this, we don't have variable declarations inside the
  sector loop in flash_print_info()
- Change "return" to "break" in the "if (ctrlc()) statement:
  This fixes a problem with the resulting output. Before this
  patch the output was:

  Sector Start Addresses:
  FC000000        FC020000        FC040000   =>

  With this patch it is now:

  Sector Start Addresses:
  FC000000        FC020000        FC040000
  =>

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Kim Phillips <kim.phillips@freescale.com>
Cc: Wolfgang Denk <wd@denx.de>
2010-08-18 09:09:00 +02:00
Philippe De Muyter
d77c7ac47e Fix printing & reading of 16-bit CFI device identifiers
Fix reading and printing of CFI flashes 16-bit devices identifiers

Nowadays CFI flashes have a 16-bit device identifier.  U-boot still
print them and read them as if they were only 8-bit wide.  Fix that.
Before:
  Intel Extended command set, Manufacturer ID: 0x89, Device ID: 0x1B
After:
  Intel Extended command set, Manufacturer ID: 0x89, Device ID: 0x881B

Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Stefan Roese <sr@denx.de>
2010-08-18 09:09:00 +02:00
Kim Phillips
2e97394a6d cfi_flash: flinfo: allow user interrupt in flash print info fn
flashes getting larger, users more impatient.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2010-08-18 09:09:00 +02:00
Wolfgang Denk
cdb749778a Rename getenv_r() into getenv_f()
While running from flash, i. e. before relocation, we have only a
limited C runtime environment without writable data segment. In this
phase, some configurations (for example with environment in EEPROM)
must not use the normal getenv(), but a special function.  This
function had been called getenv_r(), with the idea that the "_r"
suffix would mean the same as in the _r_eentrant versions of some of
the C library functions (for example getdate vs. getdate_r, getgrent
vs. getgrent_r, etc.).

Unfortunately this was a misleading name, as in U-Boot the "_r"
generally means "running from RAM", i. e. _after_ relocation.

To avoid confusion, rename into getenv_f() [as "running from flash"]

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
2010-08-04 00:45:36 +02:00
Thomas Chou
22d6c8faac cfi_flash: reset timer in flash status check
This patch adds reset_timer() before the flash status check
waiting loop.

Since the timer is basically running asynchronous to the cfi
code, it is possible to call get_timer(0), then only a few
_SYSCLK_ cycles later an interrupt is generated. This causes
timeout even though much less time has elapsed. So the timer
period registers should be reset before get_timer(0) is
called.

There is similar usage in nand_base.c.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Stefan Roese <sr@denx.de>
2010-04-07 11:33:16 +02:00
Wolfgang Denk
0020db3f0d Merge remote branch 'origin/master' into next 2010-03-29 12:33:43 +02:00
Thomas Chou
e5720823f6 cfi flash: add status polling method for amd flash
This patch adds status polling method to offer an alternative to
data toggle method for amd flash chips.

This patch is needed for nios2 cfi flash interface, where the bus
controller performs 4 bytes read cycles for a single byte read
instruction. The data toggle method can not detect chip busy
status correctly. So we have to poll DQ7, which will be inverted
when the chip is busy.

This feature is enabled with the config def,
CONFIG_SYS_CFI_FLASH_STATUS_POLL

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Stefan Roese <sr@denx.de>
2010-03-26 11:35:50 +01:00
Renato Andreola
c40c94a3d2 cfi_flash: precision and underflow problem in tout calculation
With old configuration it could happen tout=0 if CONFIG_SYS_HZ<1000.

Signed-off-by: Renato Andreola <renato.andreola@imagos.it>
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Stefan Roese <sr@denx.de>
2010-03-25 09:44:58 +01:00
Wolfgang Wegner
8f9a221045 ] fix monitor protection for CONFIG_MONITOR_IS_IN_RAM
For platforms with flash below ram addresses, the current check to
activate monitor protection is wrong/insufficient. This patch fixes
CONFIG_MONITOR_IS_IN_RAM for these systems by adding a check for
this configuration.

Signed-off-by: Wolfgang Wegner <w.wegner@astro-kom.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2010-03-04 10:07:12 +01:00
Stefan Roese
fa36ae790e cfi: Add weak default function for flash_cmd_reset()
Currently the CFI driver issues both AMD and Intel reset commands.
This is because the driver doesn't know yet which chips are connected.
This dual reset seems to cause problems with the M29W128G chips as
reported by Richard Retanubun. This patch now introduces a weak default
function for the CFI reset command, still with both resets. This can
be overridden by a board specific version if necessary.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Richard Retanubun <RichardRetanubun@ruggedcom.com>
2009-10-28 11:34:14 +01:00
Niklaus Giger
3a7b2c21fb Support up to 7 banks for ids as specified in JEDEC JEP106Z
see http://www.jedec.org/download/search/jep106Z.pdf
Add some second source legacy flash chips 256x8.

Signed-off-by: Niklaus Giger <niklaus.giger@member.fsf.org>
Signed-off-by: Stefan Roese <sr@denx.de>
2009-08-26 08:58:27 +02:00
John Schmoller
7dedefdf74 flash: Fix CFI buffer size bug
Fix bug introduced by 9c048b5234.

The cfi_flash.c driver cast the flash buffer size to a uchar in
flash_write_cfibuffer(). On some flash parts, (tested on Numonyx
part PC32F512M29EWH), the buffer size is 1KB. Remove the cast to
uchar to enable buffer sizes to be larger.

Signed-off-by: John Schmoller <jschmoller@xes-inc.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2009-08-13 09:28:20 +02:00
Po-Yu Chuang
b4db4a7638 issue write command to base for JEDEC flash
For JEDEC flash, we should issue word programming command relative to
base address rather than sector base address. Original source makes
SST Flash fails to program sectors which are not on the 0x10000 boundaries.

e.g.
SST39LF040 uses addr1=0x5555 and addr2=0x2AAA, however, each sector
is 0x1000 bytes.

Thus, if we issue command to "sector base (0x41000) + offset(0x5555)",
it sends to 0x46555 and the chip fails to recognize that address.

This patch is tested with SST39LF040.

Signed-off-by: Po-Yu Chuang <ratbert@faraday-tech.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2009-07-13 11:01:31 +02:00
Wolfgang Denk
dfcd7f2160 Redundant Environment: protect full sector size
Several boards used different ways to specify the size of the
protected area when enabling flash write protection for the sectors
holding the environment variables: some used CONFIG_ENV_SIZE and
CONFIG_ENV_SIZE_REDUND, some used CONFIG_ENV_SECT_SIZE, and some even
a mix of both for the "normal" and the "redundant" areas.

Normally, this makes no difference at all. However, things are
different when you have to deal with boards that can come with
different types of flash chips, which may have different sector
sizes.

Here we may have to chose CONFIG_ENV_SECT_SIZE such that it fits the
biggest sector size, which may include several sectors on boards using
the smaller sector flash types. In such a case, using CONFIG_ENV_SIZE
or CONFIG_ENV_SIZE_REDUND to enable the protection may lead to the
case that only the first of these sectors get protected, while the
following ones aren't.

This is no real problem, but it can be confusing for the user -
especially on boards that use CONFIG_ENV_SECT_SIZE to protect the
"normal" areas, while using CONFIG_ENV_SIZE_REDUND for the
"redundant" area.

To avoid such inconsistencies, I changed all sucn boards that I found
to consistently use CONFIG_ENV_SECT_SIZE for protection. This should
not cause any functional changes to the code.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Paul Ruhland
Cc: Pantelis Antoniou <panto@intracom.gr>
Cc: Stefan Roese <sr@denx.de>
Cc: Gary Jennejohn <garyj@denx.de>
Cc: Dave Ellis <DGE@sixnetio.com>
Acked-by: Stefan Roese <sr@denx.de>
2009-06-04 00:16:16 +02:00
Ulf Samuelsson
cb82a53266 Add support for the AT91RM9200EK Board.
The AT91RM9200-EK Evaluation Board supports the AT91RM9200
ARM9-based 32-bit RISC microcontroller and enables real-time code development
and evaluation.

Here is the chip page on Atmel website:
http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3507

with
	- NOR (cfi driver)
	- DataFlash
	- USB OHCI
	- Net
	- I2C (hard)

Signed-off-by: Ulf Samuelsson <ulf@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2009-04-04 20:42:20 +02:00
Eric Schumann
3a3baf3ee6 Make flash protection work, when the environment is in EEPROM
On the pcm030 the environment is located in the onboard EEPROM. But we want
to handle flash sector protection in a safe manner. So we must read the
unlock environment variable from EEPROM instead from flash.

This patch is required as long the evironment is saved into the EEPROM.

Stefan: Additional change as suggested by Wolfgang, use bigger char array
(instead of 4).

Signed-off-by: Eric Schumann <E.Schumann@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2009-03-23 09:50:45 +01:00
Richard Retanubun
7a88601a34 CFI: geometry reversal for STMicro M29W320DT
Follow up to the flash_fixup_stm to fix geometry reversal
on STMicro M29W320ET flash chip. The M29W320DT has 4 erase region.

Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2009-03-19 15:00:32 +01:00
Heiko Schocher
4f975678de cfi: make flash_get_info() non static
If on your board is more than one flash, you must know
the size of every single flash, for example, for updating
the DTS before booting Linux. So make this function
flash_get_info() extern, and you can have all info
about your flashes.

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2009-02-11 17:01:17 +01:00
Wolfgang Denk
f8306cb94f Merge branch 'master' of ssh://gemini/home/wd/git/u-boot/master 2009-02-07 23:51:52 +01:00
Stefan Roese
e1fb6d0d52 cfi_flash: Fix typo in cfi_flash.c
Patch "flash/cfi_flash: Use virtual sector start address, not phys"
introduced a small typo and compilation warning for systems with CFI
legacy support (e.g. hcu4). This patch fixes it.

Signed-off-by: Stefan Roese <sr@denx.de>
2009-02-05 11:44:52 +01:00
Stefan Roese
ec21d5cfcb cfi_flash: Silence compilation warning
Patch "flash/cfi_flash: Use virtual sector start address, not phys"
introduced a small compilation warning. This patch fixes it.

Signed-off-by: Stefan Roese <sr@denx.de>
2009-02-05 11:25:57 +01:00
Becky Bruce
09ce9921a7 flash/cfi_flash: Use virtual sector start address, not phys
include/flash.h was commented to say that the address in
flash_info->start was a physical address.  However, from u-boot's
point of view, and looking at most flash code, it makes more
sense for this to be a virtual address.  So I corrected the
comment to indicate that this was a virtual address.

The only flash driver that was actually treating the address
as physical was the mtd/cfi_flash driver.  However, this code
was using it inconsistently as it actually directly dereferenced
the "start" element, while it used map_physmem to get a
virtual address in other places.  I changed this driver so
that the code which initializes the info->start field calls
map_physmem to get a virtual address, eliminating the need for
further map_physmem calls.  The code is now consistent.

The *only* place a physical address should be used is when defining the
flash banks list that is used to initialize the flash_info struct,
usually found in the board config file.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Stefan Roese <sr@denx.de>
2009-02-05 11:20:05 +01:00
Wolfgang Denk
657f2062d8 Fix compiler warning
(shows up only when DEBUG is enabled)

Signed-off-by: Wolfgang Denk <wd@denx.de>
2009-02-04 12:09:20 +01:00
Richard Retanubun
e8eac43718 CFI: Add geometry reversal for STMicro M29W320ET
Added flash_fixup_stm to fix geometry reversal on STMicro M29W320ET flash chip.

Modeled after flash_fixup_amd, this patch handles the geometry reversal
or erase sectors that exist for ST Micro (now Numonyx) M29W320ET flash.
Since I cannot test all STM's chips, the detection is implemented as
narrow as possible for now.

Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2009-01-26 10:59:48 +01:00
Jens Gehrlein
0f8e851e89 CFI: increase performance of function find_sector()
Tested on TQM5200S-BD with Samsung K8P2815UQB

Signed-off-by: Jens Gehrlein <sew_s@tqs.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2009-01-26 10:50:13 +01:00
Jens Gehrlein
a7292871a7 CFI: avoid redundant function call in single word programming mode
The function find_sector() doesn't need to be called twice in
the case of AMD command set.
Tested on TQM5200S-BD with Samsung K8P2815UQB.

Signed-off-by: Jens Gehrlein <sew_s@tqs.de>
Signed-off-by: Stefan Roese <sr@denx.de>
2009-01-26 10:49:59 +01:00