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digilent_spi: add a driver for the iCEblink40 development board

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This is driver that supports the Lattice iCE40 evaluation kits. On the
board is a SPI flash memory chip labeled ST 25P10VP.

Tested to work read/write/erase with "-p digilent_spi -c M25P10" or
with a patch that resets the part beforehands (in which case it gets
detected as a M25P10-A and is way faster due to paged writes).

Change-Id: I7ffcd9a2db4395816f0e8b6ce6c3b0d8e930c9e6
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Reviewed-on: https://review.coreboot.org/23338
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Lubomir Rintel
2018-01-14 17:35:33 +01:00
committed by Nico Huber
parent ac01baa073
commit b2154e8a1d
5 changed files with 508 additions and 2 deletions
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23
flashrom.8.tmpl
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@ -303,6 +303,8 @@ bitbanging adapter)
.sp
.BR "* ch341a_spi" " (for SPI flash ROMs attached to WCH CH341A)"
.sp
.BR "* digilent_spi" " (for SPI flash ROMs attached to iCEblink40 development boards)"
.sp
Some programmers have optional or mandatory parameters which are described
in detail in the
.B PROGRAMMER-SPECIFIC INFORMATION
@ -1083,6 +1085,23 @@ Please also note that the mstarddc_spi driver only works on Linux.
.BR "ch341a_spi " programmer
The WCH CH341A programmer does not support any parameters currently. SPI frequency is fixed at 2 MHz, and CS0 is
used as per the device.
.SS
.BR "digilent_spi " programmer
.IP
An optional
.B spispeed
parameter specifies the frequency of the SPI bus.
Syntax is
.sp
.B " flashrom \-p digilent_spi:spispeed=frequency"
.sp
where
.B frequency
can be
.BR 62.5k ", " 125k ", " 250k ", " 500k ", " 1M ", " 2M " or " 4M
(in Hz). The default is a frequency of 4 MHz.
.sp
.SS
.SH EXAMPLES
To back up and update your BIOS, run
.sp
@ -1152,8 +1171,8 @@ needs no access permissions at all.
.BR gfxnvidia ", " drkaiser ", " satasii ", " satamv ", " atahpt ", " atavia " and " atapromise
have to be run as superuser/root, and need additional raw access permission.
.sp
.BR serprog ", " buspirate_spi ", " dediprog ", " usbblaster_spi ", " ft2232_spi ", " pickit2_spi " and " \
ch341a_spi
.BR serprog ", " buspirate_spi ", " dediprog ", " usbblaster_spi ", " ft2232_spi ", " pickit2_spi ", " \
ch341a_spi " and " digilent_spi
can be run as normal user on most operating systems if appropriate device
permissions are set.
.sp