diff options
| author | Chris Johnson <cwj@nvidia.com> | 2011-11-18 16:14:07 -0800 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 01:35:56 -0700 |
| commit | 15ef9ae4928cf2e96b55859894cb5389c47ace66 (patch) | |
| tree | 75f8aca3f120943cee6ee0d9e982ef54acf75974 /arch/arm/mach-tegra/sleep.S | |
| parent | c36df0096881fc0bb8f39e4c798e4506f3804bc4 (diff) | |
arm: tegra: add Trusted Foundations hooks and driver
Add CONFIG_TRUSTED_FOUNDATIONS build option and calls to issue
SMCs to the TL secure monitor (used when needing to update state
not writable by non-secure code).
Make security/tf_driver an optional part of the build, which is
part of the TL framework to interact with secure services.
Bug 883391
Change-Id: I9c6c14ff457fb3a0c612d558fe731a17c2480750
Signed-off-by: Chris Johnson <cwj@nvidia.com>
Reviewed-on: http://git-master/r/65616
Reviewed-by: Varun Colbert <vcolbert@nvidia.com>
Tested-by: Varun Colbert <vcolbert@nvidia.com>
Rebase-Id: R57977499bb6b372ac4faa360e442e8733265e9f3
Diffstat (limited to 'arch/arm/mach-tegra/sleep.S')
| -rw-r--r-- | arch/arm/mach-tegra/sleep.S | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/sleep.S b/arch/arm/mach-tegra/sleep.S index b1f7ed739bfc..5a5467a3e1e0 100644 --- a/arch/arm/mach-tegra/sleep.S +++ b/arch/arm/mach-tegra/sleep.S @@ -203,3 +203,30 @@ ENTRY(tegra_cpu_pllp) mov pc, lr ENDPROC(tegra_cpu_pllp) #endif + +#ifdef CONFIG_TRUSTED_FOUNDATIONS +/* + * tegra_generic_smc + * + * r0 = smc type + * r1 = smc subtype + * r2 = argument passed to smc + * + * issues SMC (secure monitor call) instruction with + * the specified parameters. + */ +ENTRY(tegra_generic_smc) + adr r3, __tegra_smc_stack + stmia r3, {r4-r12, lr} + mov r3, #0 + mov r4, #0 + dsb + smc #0 + adr r3, __tegra_smc_stack + ldmia r3, {r4-r12, pc} +ENDPROC(tegra_generic_smc) + .type __tegra_smc_stack, %object +__tegra_smc_stack: + .long 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 + .size __tegra_smc_stack, . - __tegra_smc_stack +#endif |