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>
PAS command 10 is used to assert and deassert the MSS reset via
TrustZone, expose this as a reset-controller to mimic the direct
access case.
Cc: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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>
Add an implementation of the SCM interface that works on ARM64 SoCs. This
is used by things like determine if we have HDCP support or not on the
system.
Signed-off-by: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
This patch converts the Qualcomm SCM driver to use the streaming DMA APIs
for communication buffers. This is being done so that the
secure_flush_area call can be removed. Using the DMA APIs will also make
the SCM32 symmetric to the coming SCM64 code.
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
This patch moves the qcom_scm_remap_error function to the include file
where can be used by both the 32 and 64 bit versions of the code.
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
This patch changes the cold_set_boot_addr function to use atomic SCM
calls. cold_set_boot_addr required adding qcom_scm_call_atomic2 to
support the two arguments going to the smc call. Using atomic removes
the need for memory allocation and instead places all arguments in
registers.
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Rathe rthan directly accessing architecture internal functions, provide
an "method"-centric wrapper for qcom_scm-32 to do what's necessary to
ensure that the secure monitor can see the data. This is called
"secure_flush_area" and ensures that the specified memory area is
coherent across the secure boundary.
Acked-by: Andy Gross <agross@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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>
Split out the 32-bit SCM implementation into its own file to prep for
supporting a 64-bit/ARM64 implementation as well. We create a simple shim
to ensure both versions conform to the same interface.
Signed-off-by: Kumar Gala <galak@codeaurora.org>
