[PATCH v5 1/2] Documentation: sysfs for Physical Presence Interface
From: Xiaoyan Zhang Signed-off-by: Xiaoyan Zhang --- Documentation/ABI/testing/sysfs-driver-ppi | 70 1 files changed, 70 insertions(+), 0 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-driver-ppi diff --git a/Documentation/ABI/testing/sysfs-driver-ppi b/Documentation/ABI/testing/sysfs-driver-ppi new file mode 100644 index 000..97a003e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-ppi @@ -0,0 +1,70 @@ +What: /sys/devices/pnp0//ppi/ +Date: August 2012 +Kernel Version:3.6 +Contact: xiaoyan.zh...@intel.com +Description: + This folder includes the attributes related with PPI (Physical + Presence Interface). Only if TPM is supported by BIOS, this + folder makes sence. The folder path can be got by command + 'find /sys/ -name 'pcrs''. For the detail information of PPI, + please refer to the PPI specification from + http://www.trustedcomputinggroup.org/ + +What: /sys/devices/pnp0//ppi/version +Date: August 2012 +Contact: xiaoyan.zh...@intel.com +Description: + This attribute shows the version of the PPI supported by the + platform. + This file is readonly. + +What: /sys/devices/pnp0//ppi/request +Date: August 2012 +Contact: xiaoyan.zh...@intel.com +Description: + This attribute shows the request for an operation to be + executed in the pre-OS environment. It is the only input from + the OS to the pre-OS environment. The request should be an + integer value range from 1 to 160, and 0 means no request. + This file can be read and written. + +What: /sys/devices/pnp0/00:/ppi/response +Date: August 2012 +Contact: xiaoyan.zh...@intel.com +Description: + This attribute shows the response to the most recent operation + request it acted upon. The format is " + : ". + This file is readonly. + +What: /sys/devices/pnp0//ppi/transition_action +Date: August 2012 +Contact: xiaoyan.zh...@intel.com +Description: + This attribute shows the platform-specific action that should + take place in order to transition to the BIOS for execution of + a requested operation. The format is ": ". + This file is readonly. + +What: /sys/devices/pnp0//ppi/tcg_operations +Date: August 2012 +Contact: xiaoyan.zh...@intel.com +Description: + This attribute shows whether it is allowed to request an + operation to be executed in the pre-OS environment by the BIOS + for the requests defined by TCG, i.e. requests from 1 to 22. + The format is " : ". + This attribute is only supported by PPI version 1.2+. + This file is readonly. + +What: /sys/devices/pnp0//ppi/vs_operations +Date: August 2012 +Contact: xiaoyan.zh...@intel.com +Description: + This attribute shows whether it is allowed to request an + operation to be executed in the pre-OS environment by the BIOS + for the verdor specific requests, i.e. requests from 128 to + 255. The format is same with tcg_operations. This attribute + is also only supported by PPI version 1.2+. + This file is readonly. -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH v5 1/2] Documentation: sysfs for Physical Presence Interface
From: Xiaoyan Zhang xiaoyan.zh...@intel.com Signed-off-by: Xiaoyan Zhang xiaoyan.zh...@intel.com --- Documentation/ABI/testing/sysfs-driver-ppi | 70 1 files changed, 70 insertions(+), 0 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-driver-ppi diff --git a/Documentation/ABI/testing/sysfs-driver-ppi b/Documentation/ABI/testing/sysfs-driver-ppi new file mode 100644 index 000..97a003e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-driver-ppi @@ -0,0 +1,70 @@ +What: /sys/devices/pnp0/bus-num/ppi/ +Date: August 2012 +Kernel Version:3.6 +Contact: xiaoyan.zh...@intel.com +Description: + This folder includes the attributes related with PPI (Physical + Presence Interface). Only if TPM is supported by BIOS, this + folder makes sence. The folder path can be got by command + 'find /sys/ -name 'pcrs''. For the detail information of PPI, + please refer to the PPI specification from + http://www.trustedcomputinggroup.org/ + +What: /sys/devices/pnp0/bus-num/ppi/version +Date: August 2012 +Contact: xiaoyan.zh...@intel.com +Description: + This attribute shows the version of the PPI supported by the + platform. + This file is readonly. + +What: /sys/devices/pnp0/bus-num/ppi/request +Date: August 2012 +Contact: xiaoyan.zh...@intel.com +Description: + This attribute shows the request for an operation to be + executed in the pre-OS environment. It is the only input from + the OS to the pre-OS environment. The request should be an + integer value range from 1 to 160, and 0 means no request. + This file can be read and written. + +What: /sys/devices/pnp0/00:bus-num/ppi/response +Date: August 2012 +Contact: xiaoyan.zh...@intel.com +Description: + This attribute shows the response to the most recent operation + request it acted upon. The format is request response num + : response description. + This file is readonly. + +What: /sys/devices/pnp0/bus-num/ppi/transition_action +Date: August 2012 +Contact: xiaoyan.zh...@intel.com +Description: + This attribute shows the platform-specific action that should + take place in order to transition to the BIOS for execution of + a requested operation. The format is action num: action + description. + This file is readonly. + +What: /sys/devices/pnp0/bus-num/ppi/tcg_operations +Date: August 2012 +Contact: xiaoyan.zh...@intel.com +Description: + This attribute shows whether it is allowed to request an + operation to be executed in the pre-OS environment by the BIOS + for the requests defined by TCG, i.e. requests from 1 to 22. + The format is request status num: status description. + This attribute is only supported by PPI version 1.2+. + This file is readonly. + +What: /sys/devices/pnp0/bus-num/ppi/vs_operations +Date: August 2012 +Contact: xiaoyan.zh...@intel.com +Description: + This attribute shows whether it is allowed to request an + operation to be executed in the pre-OS environment by the BIOS + for the verdor specific requests, i.e. requests from 128 to + 255. The format is same with tcg_operations. This attribute + is also only supported by PPI version 1.2+. + This file is readonly. -- 1.7.7.6 -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
