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| author | Namyoon Woo <namyoon@chromium.org> | 2019-12-09 14:34:55 -0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-02-22 01:46:39 +0000 |
| commit | 5a8a856b0a942d3b982ef28324a924db3c7d9f40 (patch) | |
| tree | ac82cccef343c83adc300d1e7c2c9bb41df095e0 /board/cr50/u2f.c | |
| parent | 9d9c4ca2342d09ccf241173d36d3cf2b16ed3c41 (diff) | |
| download | chrome-ec-5a8a856b0a942d3b982ef28324a924db3c7d9f40.tar.gz | |
EC-CR50 communication
This patch supports EC-CR50 communication.
EC activates EC-CR50 communication by setting high DIOB3, and send
a command packet to CR50 through UART_EC_TX_CR50_RX. Cr50 processes
the packet, and sends a response packet back to EC. EC deactivates
EC-CR50 communication by putting low DIOB3.
This patch supports two kinds of EC-CR50 commands:
- CR50_COMM_CMD_SET_BOOT_MODE
- CR50_COMM_CMD_VERIFY_HASH
Cr50 stores some of EC-EFS context in a powerdown register before
deep sleep and restores it after wakeup.
This patch increases flash usage by 1456 bytes.
BUG=b:119329144
BRANCH=cr50
TEST=Checked "ec_comm" console command on Octopus and
reworked Helios.
Checked uart_stress_tester.py running without character loss.
Change-Id: I23e90b9f3e860a3d198dcee718d7d11080d06e40
Signed-off-by: Namyoon Woo <namyoon@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1961145
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Diffstat (limited to 'board/cr50/u2f.c')
0 files changed, 0 insertions, 0 deletions