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The original UUT mechanism has the limitation that the image size cannot exceed the code RAM size. Hence, it only allows to flash the EC firmware by programming RO and RW images seperately. In this CL, we introduce the "--auto" flag in uartupdattool. It will divide the firmware into segments (4K bytes) and program the segments one by one. It also simplifies the function flash_npcx_uut() in flash_ec because some actions are moved into the uartupdatetool with auto flag enabled. BRANCH=none BUG=none TEST=No build errors for make buildall. TEST= ------------------------------------------------------------------------ 1. Connect the servo connector (J24) on npcx7 EVB to servo board v2 via flex cable. 2. Manually turn the switch SW1.6 to "ON" on npcx7 EVB. 3. Reset ec by issuing Power-Up or VCC1_RST reset. 4. Manually turn the switch SW1.6 to "OFF" on npcx7 EVB. 5. Move npcx7_evb from array BOARDS_NPCX_7M7X_JTAG to BOARDS_NPCX_UUT in flash_ec. 6. "./util/flash_ec --board=npcx7_evb" or "./util/flash_ec --board=npcx7_evb --ro" (Note: this line in flash_ec must be removed in step 6: https://chromium.googlesource.com/chromiumos/platform/ec/+/master/util/flash_ec#961) Change-Id: Ifdb6a40ef88c6a9fb435169e158fd615100237cf Signed-off-by: CHLin <CHLIN56@nuvoton.com> Reviewed-on: https://chromium-review.googlesource.com/1043825 Commit-Ready: CH Lin <chlin56@nuvoton.com> Tested-by: CH Lin <chlin56@nuvoton.com> Reviewed-by: Vincent Palatin <vpalatin@chromium.org>