diff options
Diffstat (limited to 'services/spd/tspd/tspd_private.h')
| -rw-r--r-- | services/spd/tspd/tspd_private.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/services/spd/tspd/tspd_private.h b/services/spd/tspd/tspd_private.h index b9cf496d..7395bb9e 100644 --- a/services/spd/tspd/tspd_private.h +++ b/services/spd/tspd/tspd_private.h @@ -125,6 +125,12 @@ #include <cassert.h> #include <stdint.h> +/* + * The number of arguments to save during a SMC call for TSP. + * Currently only x1 and x2 are used by TSP. + */ +#define TSP_NUM_ARGS 0x2 + /* AArch64 callee saved general purpose register context structure. */ DEFINE_REG_STRUCT(c_rt_regs, TSPD_C_RT_CTX_ENTRIES); @@ -147,6 +153,8 @@ CASSERT(TSPD_C_RT_CTX_SIZE == sizeof(c_rt_regs_t), \ * 'c_rt_ctx' - stack address to restore C runtime context from after * returning from a synchronous entry into the SP. * 'cpu_ctx' - space to maintain SP architectural state + * 'saved_tsp_args' - space to store arguments for TSP arithmetic operations + * which will queried using the TSP_GET_ARGS SMC by TSP. ******************************************************************************/ typedef struct tsp_context { uint64_t saved_elr_el3; @@ -155,8 +163,20 @@ typedef struct tsp_context { uint64_t mpidr; uint64_t c_rt_ctx; cpu_context_t cpu_ctx; + uint64_t saved_tsp_args[TSP_NUM_ARGS]; } tsp_context_t; +/* Helper macros to store and retrieve tsp args from tsp_context */ +#define store_tsp_args(tsp_ctx, x1, x2) do {\ + tsp_ctx->saved_tsp_args[0] = x1;\ + tsp_ctx->saved_tsp_args[1] = x2;\ + } while (0) + +#define get_tsp_args(tsp_ctx, x1, x2) do {\ + x1 = tsp_ctx->saved_tsp_args[0];\ + x2 = tsp_ctx->saved_tsp_args[1];\ + } while (0) + /* TSPD power management handlers */ extern const spd_pm_ops_t tspd_pm; |