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pd: Add config to disable PD communication in locked RO

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The scheme to disable PD communication in locked RO needs to be
implemented on other platforms, so move it to common code, behind
CONFIG_USB_PD_COMM_LOCKED.

BUG=chrome-os-partner:52157
BRANCH=glados
TEST=Manual on chell. Lock system and boot to recovery, then verify PD
communication is functional. Enable CONFIG_USB_PD_COMM_LOCKED and verify
PD communication isn't functional under the same test conditions.

Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Change-Id: I8d1f24c0b60cf1c54e329af003b7083ee55ffc40
Reviewed-on: https://chromium-review.googlesource.com/338064
Commit-Ready: Shawn N <shawnn@chromium.org>
Tested-by: Shawn N <shawnn@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Shawn Nematbakhsh
2016-04-10 15:46:39 -07:00
committed by chrome-bot
parent a3341ee7e9
commit d2e77ddbc9
6 changed files with 31 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
include/config.h
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@@ -1775,7 +1775,15 @@
#undef CONFIG_USB_PD_CHECK_MAX_REQUEST_ALLOWED
/* Default state of PD communication enabled flag */
#define CONFIG_USB_PD_COMM_ENABLED 1
#define CONFIG_USB_PD_COMM_ENABLED
/*
* Do not enable PD communication in RO as a security measure.
* We don't want to allow communication to outside world until
* we jump to RW. This can by overridden with the removal of
* the write protect screw to allow for easier testing.
*/
#undef CONFIG_USB_PD_COMM_LOCKED
/* Respond to custom vendor-defined messages over PD */
#undef CONFIG_USB_PD_CUSTOM_VDM