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>
