This overcomes a problem with the ServoMicro where USB packets can be
ack'd by the device without triggering interrupts or loading data into
the USB endpoints. The retry mechanism attempts the USB read 3 times
before reattempting the write call to avoid performing multiple SPI
transfers due to a USB problem. This process repeats 3 times before we
return the last error code. Intermediary problems are reported in the
status code.
Based off the downstream commit:
https://chromium-review.googlesource.com/c/chromiumos/third_party/flashrom/+/2038271
Change-Id: I76cde68852fa4963582d57c7dcb9f24de32c6da8
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/39310
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
- The USB SPI interface has been split up into write and read stages.
- The packet packing has been transitioned from array based to a
struct.
This was based off the downstream commit:
https://chromium-review.googlesource.com/c/chromiumos/third_party/flashrom/+/2036508
Change-Id: Id3a2a544c1c7e1d969a5157977b8a1c7af18371b
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/39309
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>