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Commit fe2dd96d authored by Zhen Kong's avatar Zhen Kong
Browse files

firmware: qcom: Add TZ log driver snapshot 



This is a snapshot of the TZ log driver as of the
msm-4.9 commit <249f073d39e9d33> (Merge "diag:
Prevent unnecessary data ready counter update").

Change-Id: I4ba498c57783640813b0561fde9ced51b3145c9d
Signed-off-by: default avatarZhen Kong <zkong@codeaurora.org>
parent 0ba27bd6

Documentation/devicetree/bindings/arm/msm/tz-log.txt

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* TZLOG (Trust Zone Log)



The tz_log driver is a platform device driver that exposes a debugfs

interface for accessing and displaying diagnostic information

related to secure code (Trustzone/QSEE).



Required properties:

- compatible : Should be "qcom,tz-log"

- reg        : Offset and size of the register set for the device



Optional properties:

- qcom,hyplog-enabled   : (boolean) indicates if driver supports HYP logger service.

- hyplog-address-offset : Register offset to get the HYP log base address.

- hyplog-size-offset    : Register offset to get the HYP log size parameter.



Example:



	qcom,tz-log@fe805720 {

		compatible = "qcom,tz-log";

                reg = <0xfe805720 0x1000>;

		qcom,hyplog-enabled;

		hyplog-address-offset = 0x410;

		hyplog-size-offset = 0x414;

	};

drivers/firmware/Kconfig

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@@ -238,5 +238,6 @@ source "drivers/firmware/google/Kconfig" 
source "drivers/firmware/efi/Kconfig"

source "drivers/firmware/meson/Kconfig"

source "drivers/firmware/tegra/Kconfig"

source "drivers/firmware/qcom/Kconfig"



endmenu

drivers/firmware/Makefile

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@@ -29,4 +29,5 @@ obj-y += meson/ 
obj-$(CONFIG_GOOGLE_FIRMWARE)	+= google/

obj-$(CONFIG_EFI)		+= efi/

obj-$(CONFIG_UEFI_CPER)		+= efi/

obj-$(CONFIG_MSM_TZ_LOG)       += qcom/

obj-y				+= tegra/

drivers/firmware/qcom/Kconfig

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config MSM_TZ_LOG

        tristate "MSM Trust Zone (TZ) Log Driver"

        depends on DEBUG_FS

        help

          This option enables a driver with a debugfs interface for messages

          produced by the Secure code (Trust zone). These messages provide

          diagnostic information about TZ operation.

drivers/firmware/qcom/Makefile

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obj-$(CONFIG_MSM_TZ_LOG) += tz_log.o