which support all commands, but may not exist.
For controllers which support only a subset of commands, it will fail in
unexpected ways. Even if a command is supported by the controller, it
may be unavailable if the controller is locked down.
The new logic checks if RDID could be issued and its return values made
sense (not 0xff 0xff 0xff). In that case, RES probing is not performed.
Otherwise, we try RES.
There is one drawback: If RDID returned unexpected values, we don't
issue a RES probe. However, in that case we should try to match RDID
anyway.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: FENG yu ning <fengyuning1984@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3774 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
does not have a mechanism to signal command failure, the SPI host may be
unable to send a given command over the wire due to security or hardware
limitations. The current code ignores these mechanisms completely and
simply assumes almost every command succeeds. Complain if SPI command
execution fails.
Since locked down Intel chipsets (like the one we had problems with
earlier) only allow a small subset of commands, find the common subset
of commands between the chipset and the ROM in the chip erase case. That
is accomplished by the new spi_chip_erase_60_c7() which can be used for
chips supporting both 0x60 and 0xc7 chip erase commands.
Both parts of the patch address problems seen in the real world. The
increased verbosity for the error case will help us diagnose and address
problems better.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Otherwise: Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3757 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
flashrom. Not all chips support all commands, so allow the implementer
to select the matching function.
Fix a layering violation in ICH SPI code to be less bad. Still not
perfect, but the new code is shorter, more generic and
architecturally
more sound.
TODO (in a separate patch):
- move the generic sector erase code to spi.c
- decide which erase command to use based on info about the chip
- create a generic spi_erase_all_sectors function which calls the
generic sector erase function
Thanks to Stefan for reviewing and commenting.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3722 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
using block erase d8 as discussed with Peter Stuge
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3707 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
While writing a new SPI driver I fixed some things in the SPI code:
All calls to spi_command() had unneccessary #define duplications, and in some
cases the read count define could theoretically become harmful because NULL was
passed for the read buffer. Avoid a crash, should someone change the #defines.
I also noticed that the only caller of spi_page_program() was the it87 driver,
and spi_page_program() could only call back into the it87 driver. Removed the
function for easier-to-follow code and made it8716f_spi_page_program() static.
The ichspi driver's static page functions are already static.
Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3418 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
construct: the flash bus.
At some point the flash bus will be part of struct flashchip.
Pardon me for pushing this in, but I think it is important to beware of further
decay and it will improve things for other developers in the short run.
Carl-Daniel, I will consider your suggestions in another patch. I want to keep
things from getting too much for now. The patch includes Rudolf's VIA SPI
changes though.
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3401 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3399 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
few documented exceptions to ICH7 SPI controller.
Signed-off-by: Rudolf Marek <r.marek@assembler.cz>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3398 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
* fix some variable names in ichspi.c (Offset -> offset)
* Dump ICH7 SPI bar with -V
* Improve error message in case IOPL goes wrong. (It might not even be an IOPL)
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3393 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Preparation for a probe optimization patch. This patch does not change any
functionality. spi_probe_rdid was tested to still work on my M57SLI rev 2.
The idea is to have error checks return error immediately when something
fails, rather than having code inside an if block where the condition
tests for success.
This means: Less indentation, more clear what the code is checking.
Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Ward Vandewege <ward@gnu.org>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3386 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Powerdown) SPI command to flashrom to identify older SPI chips which
can't handle JEDEC RDID. Since RES gives a one-byte identifier which is
shared among many different vendors and even different sizes, we want to
match RES as a last resort if RDID returns 0xff 0xff 0xff.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Peter Stuge <peter@stuge.se>
This is a heavily reworked version of a patch by Fredrik Tolf, which was
Signed-off-by: Fredrik Tolf <fredrik@dolda2000.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3320 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
detected by JEDEC probe routines all have vendor IDs with correct
parity. Use a parity check as additional hint whether a vendor ID makes
sense.
Note: Device IDs have no parity requirements whatsoever.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3308 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This patch has no code changes.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3302 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
ICH9 SPI support. In theory, this patch has no behaviour changes.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3301 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This paves the way to have a fully generic generic_spi_command without
knowledge about any SPI controller.
The third step would be calling SPI controller functions via a function
pointer.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3296 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This is a very early step toward cleaning up SPI code in flashrom.
Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3295 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Programmable Micro Corp (PMC) need this.
Both the serial and parallel flash JEDEC detection routines would
benefit from a parity/sanity check of the vendor ID. Will do this later.
Add support for the PMC Pm25LV family of SPI flash chips.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Chris Lingard <chris@stockwith.co.uk>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3091 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
readcnt==0 saves 10 seconds with the unconditional 10us delay, reducing
programming time for SST25VF016B to 40-45 secs.
Signed-off-by: Ronald Hoogenboom <hoogenboom30@zonnet.nl>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3068 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
output is specified.
Pretty-print the chip status register (including block lock information)
for ST M25P family and Macronix MX25L family chips.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Corey Osgood <corey.osgood@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3026 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
with multiple possible opcodes from linear numbering at the end (_1, _2)
to include the opcode at the end (_60, _c7). That way, you only have to
take a short look at the data sheet and choose the right function by
appending the opcode listed in the data sheet.
No functional changes.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Ward Vandewege <ward@gnu.org>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3009 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
status register instead.
This has been tested by Harald Gutmann <harald.gutmann@gmx.net> with a
MX25L4005 chip.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2876 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
chip the code was tested and verified with is the Macronix MX25L4005,
but other chips should work as well.
Timeouts are still hardcoded to data sheet maxima, but the status
register checking code is already there.
Thanks to Harald Gutmann for the initial code on which this is loosely
based.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2874 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Move SPI code out of board_enable.c where it started its life. The SPI
chip finding and SPI chip accessor code is moved as well. This can be
split later if we feel like it.
The non-use of svn cp is intentional because the only history we'd have
to preserve are a few commits which were early prototypes of chip
identification code. For those who intend to look at that history, they
can look at board_enable.c revision 2853.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2858 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Carl-Daniel Hailfinger