flash_fp_mcu: Truncate board name to base board name

This allows the script to work properly on derivative built targets,
like hatch-arc-r and hatch-borealis. This is important for tast tests.

BRANCH=none
BUG=b:186697064
TEST=# dut1 is a dratini device
     scp util/flash_fp_mcu dut1:/usr/local/bin/flash_fp_mcu
     ssh dut1 flash_fp_mcu --hello; echo "Status $?"
     # Should succeed
     ssh dut1 flash_fp_mcu '/opt/google/biod/fw/bloonchipper*'; echo "Status $?"
     # Should succeed
     ssh dut1 flash_fp_mcu; echo "Status $?"
     # Should error out about no filename
     ssh dut1 touch /root/alreadyexists
     ssh dut1 flash_fp_mcu -r /root/alreadyexists; echo "Status $?"
     # Should fail citing that the output file already exists

Signed-off-by: Craig Hesling <hesling@chromium.org>
Change-Id: I2d14c5254d7159d63bf0e9bde5ba77e74670bfa2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2858277
Reviewed-by: Tom Hughes <tomhughes@chromium.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/util/flash_fp_mcu b/util/flash_fp_mcu
index 27312bc093..0a75a1f5b2 100644
--- a/util/flash_fp_mcu
+++ b/util/flash_fp_mcu
@@ -168,6 +168,12 @@ get_platform_name() {
     return 1
   fi
 
+  # Tests are also run on modified images, like hatch-arc-r or hatch-borealis.
+  # These devices still have fingerprint and are expected to pass tests.
+  # See b/186697064.
+  # We remove any suffix starting at the first '-'.
+  platform_name="${platform_name%%-*}"
+
   echo "${platform_name}"
 }