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path: root/arch/arm/mach-msm/scm.c
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2012-05-11ARM: msm: fix compilation flags for MSM_SCM (part 2)Stephen Boyd
eca55f4 (ARM: msm: fix compilation flags for MSM_SCM, 2011-11-08) added the correct assembler directive for the first smc instance but missed the second instance in scm_get_version(). Add it so we can compile this file with newer binutils. Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org>
2011-11-08ARM: msm: fix compilation flags for MSM_SCMMarc Zyngier
CONFIG_MSM_SCM uses the smc instruction, which with some toolchains requires a ".arch_extension" directive. Cc: David Brown <davidb@codeaurora.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: David Brown <davidb@codeaurora.org>
2011-03-31Fix common misspellingsLucas De Marchi
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-10msm: scm: Check for interruption immediatelyStephen Boyd
When we're interrupted on the secure side, we should just issue another smc instruction again instead of replaying the arguments to smc. Fix it. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org>
2011-03-10msm: scm: Fix improper register assignmentStephen Boyd
Assign the registers used in the inline assembly immediately before the inline assembly block. This ensures the compiler doesn't optimize away dead register assignments when it shouldn't. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: David Brown <davidb@codeaurora.org>
2011-03-10msm: scm: Mark inline asm as volatileStephen Boyd
We don't want the compiler to remove these asm statements or reorder them in any way. Mark them as volatile to be sure. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: David Brown <davidb@codeaurora.org>
2011-01-07msm: Secure Channel Manager (SCM) supportStephen Boyd
SCM is the protocol used to communicate between the secure and non-secure code executing on the applications processor. The non-secure side uses a physically contiguous buffer to pass information to the secure side; where the buffer conforms to a format that is agreed upon by both sides. The use of a buffer allows multiple pending requests to be in flight on the secure side. It also benefits use cases where the command or response buffer contains large chunks of data. Reviewed-by: Saravana Kannan <skannan@codeaurora.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: David Brown <davidb@codeaurora.org>