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b4691fe734
SPI access now depends on CCD_CAP_AP_FLASH and CCD_CAP_EC_FLASH.
usb_spi_state.enabled_host and .enabled_device are now bitfields which
depend on which SPI interface is enabled. This was implied before by
a single & comparing enabled_host to enabled_device, but is now
explicit so that the device can decide to enable just a subset of
buses.
BUG=b:62537474
BRANCH=cr50
BRANCH=cr50
TEST=manual with CR50_DEV=1
Connect host PC to dev board USB port
On host PC:
sudo servod -c ccd_cr50.xml -c reef_r1_inas.xml
In test protocol below, (test EC) means this command:
sudo flashrom -p raiden_debug_spi:target=EC --wp-status
And (test AP) means this command:
sudo flashrom -p raiden_debug_spi:target=AP --wp-status
"pass" means no console warning about "SPI access denied"
"fail" means console warnings about "SPI access denied"
To get even more confirmation, in chip/g/usb_spi.c temporarily
put this debug statement at the end of usb_spi_deferred():
CPRINTS("SPI res=%d", (int)res);
Pass is res=0, fail is res=5.
ccdoops
(test AP) --> pass
(test EC) --> pass
ccdunlock
(test AP) --> fail
(test EC) --> fail
ccdoops
ccdset flashap unlesslocked
ccdunlock
(test AP) --> pass
(test EC) --> fail
ccdoops
ccdset flashec unlesslocked
ccdunlock
(test AP) --> fail
(test EC) --> pass
Change-Id: I3d37d088b748832f164f2ca0ff29a93d6532ebed
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/590858
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly