Commit Graph

9 Commits

Author SHA1 Message Date
Andy Gross
a811b420b6 firmware: qcom_scm: Add set remote state API
This patch adds a set remote state SCM API.  This will be used by the
Venus and GPU subsystems to set state on the remote processors.

This work was based on two patch sets by Jordan Crouse and Stanimir
Varbanov.

Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-01-16 23:45:04 -06:00
Stanimir Varbanov
e127991250 firmware: qcom: scm: Add empty functions to help compile testing
This will help to compile testing drivers which depends on scm
functions with COMPILE_TEST Kconfig option.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2017-01-16 23:07:36 -06:00
Bjorn Andersson
f01e90fe34 firmware: qcom: scm: Peripheral Authentication Service
This adds the Peripheral Authentication Service (PAS) interface to the
Qualcomm SCM interface. The API is used to authenticate and boot a range
of external processors in various Qualcomm platforms.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-06-24 22:53:50 -05:00
Rob Clark
2d3c277ca5 qcom-scm: add missing prototype for qcom_scm_is_available()
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Andy Gross <agross@codeaurora.org>
2015-10-14 14:51:22 -05:00
jilai wang
9626b6993b firmware: qcom: scm: Add HDCP Support
HDCP driver needs to check if secure environment supports HDCP.  If it's
supported, then it requires to program some registers through SCM.
Add qcom_scm_hdcp_available and qcom_scm_hdcp_req to support these
requirements.

Signed-off-by: Jilai Wang <jilaiw@codeaurora.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-05-28 10:47:45 -05:00
Lina Iyer
767b0235dd firmware: qcom: scm: Support cpu power down through SCM
Support powering down the calling cpu, by trapping into SCM. This
termination function triggers the ARM cpu to execute WFI instruction,
causing the power controller to safely power the cpu down.

Caches may be flushed before powering down the cpu. If cache controller
is set to turn off when the cpu is powered down, then the flags argument
indicates to the secure mode to flush its cache lines before executing
WFI.The warm boot reset address for the cpu should be set before the
calling into this function for the cpu to resume.

The original code for the qcom_scm_call_atomic1() comes from a patch by
Stephen Boyd [1]. The function scm_call_atomic1() has been cherry picked
and renamed to match the convention used in this file. Since there are
no users of scm_call_atomic2(), the function is not included.

[1]. https://lkml.org/lkml/2014/8/4/765

Signed-off-by: Stephen Boyd <sboyd@codeauraro.org>
Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11 15:15:11 -05:00
Lina Iyer
2ce76a6ad3 firmware: qcom: scm: Add qcom_scm_set_warm_boot_addr function
A core can be powered down for cpuidle or when it is hotplugged off. In
either case, the warmboot return address would be different. Allow
setting the warmboot address for a specific cpu, optimize and write to
the firmware, if the address is different than the previously set
address.

Export qcom_scm_set_warm_boot_addr function move the warm boot flags to
implementation.

Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11 15:15:07 -05:00
Lina Iyer
a353e4a06f firmware: qcom: scm: Clean cold boot entry to export only the API
We dont need to export the SCM specific cold boot flags to the platform
code. Export only a function to set the cold boot address.

Signed-off-by: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11 15:15:05 -05:00
Kumar Gala
916f743da3 firmware: qcom: scm: Move the scm driver to drivers/firmware
Architectural changes in the ARM Linux kernel tree mandate the eventual
removal of the mach-* directories. Move the scm driver to
drivers/firmware and the scm header to include/linux to support that
removal.

Signed-off-by: Kumar Gala <galak@codeaurora.org>
2015-03-11 15:06:38 -05:00