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Open/Close TA sessions, send commands/events to TAs

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This patch adds support to open/close secure sessions with Trusted
Apps and later send commands/events. Modify TLK_NUM_FID to indicate
the total number of FIDs available to the NS world.

Change-Id: I3f1153dfa5510bd44fc25f1fee85cae475b1abf1
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
This commit is contained in:
Varun Wadekar 2015-03-13 15:18:20 +05:30
parent f9d2505497
commit 6693962c34
2 changed files with 43 additions and 1 deletions
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11
include/bl32/payloads/tlk.h
View file

@ -35,6 +35,7 @@
* Generate function IDs for the Trusted OS/Apps
*/
#define TLK_TOS_STD_FID(fid) ((fid) | 0x72000000 | (0 << 31))
#define TLK_TA_STD_FID(fid) ((fid) | 0x70000000 | (0 << 31))
/*
* Trusted OS specific function IDs
@ -53,10 +54,18 @@
#define TLK_VA_TRANSLATE (0x32000004 | (1 << 31))
#define TLK_FID_SHARED_MEMBUF (0x32000005 | (1 << 31))
/*
* Trusted Application specific function IDs
*/
#define TLK_OPEN_TA_SESSION TLK_TA_STD_FID(0x1)
#define TLK_CLOSE_TA_SESSION TLK_TA_STD_FID(0x2)
#define TLK_TA_LAUNCH_OP TLK_TA_STD_FID(0x3)
#define TLK_TA_SEND_EVENT TLK_TA_STD_FID(0x4)
/*
* Total number of function IDs implemented for services offered to NS clients.
*/
#define TLK_NUM_FID 0
#define TLK_NUM_FID 7
/* TLK implementation version numbers */
#define TLK_VERSION_MAJOR 0x0 /* Major version */

33
services/spd/tlkd/tlkd_main.c
View file

@ -193,6 +193,10 @@ uint64_t tlkd_smc_handler(uint32_t smc_fid,
/* Passing a NULL context is a critical programming error */
assert(handle);
/* These SMCs are only supported by CPU0 */
if ((read_mpidr() & MPIDR_CPU_MASK) != 0)
SMC_RET1(handle, SMC_UNK);
/* Determine which security state this SMC originated from */
ns = is_caller_non_secure(flags);
@ -267,9 +271,16 @@ uint64_t tlkd_smc_handler(uint32_t smc_fid,
* b. register shared memory with the SP for passing args
* required for maintaining sessions with the Trusted
* Applications.
* c. open/close sessions
* d. issue commands to the Trusted Apps
*/
case TLK_REGISTER_LOGBUF:
case TLK_REGISTER_REQBUF:
case TLK_OPEN_TA_SESSION:
case TLK_CLOSE_TA_SESSION:
case TLK_TA_LAUNCH_OP:
case TLK_TA_SEND_EVENT:
if (!ns || !tlk_args_results_buf)
SMC_RET1(handle, SMC_UNK);
@ -442,3 +453,25 @@ DECLARE_RT_SVC(
NULL,
tlkd_smc_handler
);
/* Define a SPD runtime service descriptor for fast SMC calls */
DECLARE_RT_SVC(
tlkd_tap_fast,
OEN_TAP_START,
OEN_TAP_END,
SMC_TYPE_FAST,
NULL,
tlkd_smc_handler
);
/* Define a SPD runtime service descriptor for standard SMC calls */
DECLARE_RT_SVC(
tlkd_tap_std,
OEN_TAP_START,
OEN_TAP_END,
SMC_TYPE_STD,
NULL,
tlkd_smc_handler
);