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1b9a553ece
This CL adds support for updating FW to the internal spi flash in
npcx ec by enabling gang programmer mode. We also added a new array,
BOARDS_NPCX_INT_SPI, to indicate which boards will update FW through
this mechanism. The preliminary of testing is listed below.
Step 1: Connect npcx7 evb and servo v2 with following pins.
NPCX796F Servo V2
-----------------------------------------
GP_SEL# --> (Pin 7, J7) FW_UP#
VCC1_RST#--> (Pin 4, J7) DUT_COLD_RESET#
GP_CS# --> (Pin 1, J11) DUT_SPI1_CS
GP_SCLK --> (Pin 2, J11) DUT_SPI1_CLK
GP_MISO --> (Pin 5, J11) DUT_SPI1_DO
GP_MOSI --> (Pin 6, J11) DUT_SPI1_DI
-----------------------------------------
Step 2: Npcx ec is powered up by PPDUT_SPI1_VREF (Pin 8, J11).
Step 3: Add external PU on FW_UP#.
Step 4: Execute "sudo servod --vendor 0x18d1 --product 0x5002".
BRANCH=none
BUG=none
TEST=Move npcx7_evb from BOARDS_NPCX_7M6X_JTAG to
BOARDS_NPCX_INT_SPI. Prepare two different ec images.
Use following script "while :; do ./util/flash_ec
--board=npcx7_evb --image=../ec1.bin; sleep 1; ./util/flash_ec
--board=npcx7_evb --image=../ec2.bin; sleep 1; done" to test
gang programmer mode. No errors occur over 2 hours.
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
Change-Id: Ie813bf0191c06bb6e30a5e0dccb824f9f79ada53
Reviewed-on: https://chromium-review.googlesource.com/564742
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>