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meowth_fp: update RW signature verification config

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Move the RW signature verification in a dedicated task rather than on
the synchronous startup path, in order to be compatible with our flashrom
update mechanisms (but at the expense of additional latency in RO).

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

BRANCH=none
BUG=b:36125319
TEST=flashrom -p ec:type=fp -w ec.bin

Change-Id: If9ae66bfde0c5922db86dc9acfd4ee766089fa1d
Reviewed-on: https://chromium-review.googlesource.com/936542
Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
This commit is contained in:
Vincent Palatin
2018-02-23 17:00:02 +01:00
committed by chrome-bot
parent 870fa901a3
commit e0e2645b1e
2 changed files with 4 additions and 3 deletions
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1
board/meowth_fp/ec.tasklist
View File

@@ -17,6 +17,7 @@
* 's' is the stack size in bytes; must be a multiple of 8
*/
#define CONFIG_TASK_LIST \
TASK_ALWAYS_RO(RWSIG, rwsig_task, NULL, 1280) \
TASK_ALWAYS(HOOKS, hook_task, NULL, LARGER_TASK_STACK_SIZE) \
TASK_ALWAYS_RW(FPSENSOR, fp_task, NULL, 4096) \
TASK_ALWAYS(HOSTCMD, host_command_task, NULL, LARGER_TASK_STACK_SIZE) \

6
board/meowth_fp/flash_fp_mcu
View File

@@ -49,7 +49,7 @@ echo 1 > /sys/class/gpio/gpio${GPIO_NRST}/value
echo "in" > /sys/class/gpio/gpio${GPIO_NRST}/direction
stm32mon -s ${SPIDEV} -e -w $1
stm32mon -p -s ${SPIDEV} -e -w $1
# unload spidev
echo "${SPIID}" > /sys/bus/spi/drivers/spidev/unbind
@@ -66,8 +66,8 @@ echo "in" > /sys/class/gpio/gpio${GPIO_NRST}/direction
echo ${GPIO_BOOT0} > /sys/class/gpio/unexport
echo ${GPIO_NRST} > /sys/class/gpio/unexport
# wait for FP MCU to come back up
sleep 1
# wait for FP MCU to come back up (including RWSIG delay)
sleep 2
# Put back cros_fp driver
echo "${SPIID}" > /sys/bus/spi/drivers/cros-ec-spi/bind
# Test it