Commits on Nov 22, 2024

1. [opentitantool] Add ability to access SPI via flashrom …

   Some transports/debuggers expose the SPI ports in a way that can be
   accessed by the flashrom program, without going through opentitanlib.
   
   This CL introduces a new `flashrom-args` command under `spi`:
   
   ```
   opentitantool --conf ... --usb-serial 2042355F3236 spi --bus=SPI1 flashrom-args
   {
     programmer: "raiden_debug_spi:serial=2042355F3236,target=2"
   }
   ```
   
   This can be used in cases where the flashrom program better knows how to
   communicate with e.g. the SPI flash chip mounted on the OpenTitan
   development shield, in order to quickly load some data into it as part
   of setup before testing code on the OpenTitan chip.
   
   Signed-off-by: Jes B. Klinke <[email protected]>
   
   Change-Id: I9511b449f303a5f0cd901dac19ce9654209b3fd1

   

   jesultra committed Nov 22, 2024
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2. [opentitantool] Add ability to access underlying serial device …

   Some transports/debuggers expose the serial ports in a way that can be
   accessed by other programs, without necessarily going through
   opentitanlib.
   
   This CL introduces a new `uart` top level command and `os-device` under
   it, (in hindsigt, `console` and `rescue` probably beloned under the same
   top-level, in order to share some flag processing.)
   
   The idea is that `opentitantool` can be queried, using a set of
   configuration file with aliases and command line usb serial number, and
   will print the path of the underlying OS device corresponding to the
   given port of the given debugger:
   
   ```
   opentitantool --conf ... --usb-serial ... uart --uart=EC os-device
   {
     path: "/dev/ttyUSB6"
   }
   ```
   
   This can be used in cases where processing of output from the OpenTitan
   chip takes place in external scripts or programs.  Such cases currently
   will have to use an `opentitantool console` process to pass data between
   the serial device and its stdin/stdout pipes to the actual script doing
   the actual processing, which is wasteful.
   
   Change-Id: Id4dfff38fbc74ec65366d3a7e49a6844ae52c8ee
   Signed-off-by: Jes B. Klinke <[email protected]>

   

   jesultra committed Nov 22, 2024
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