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TEE: compatible dynamic SHM for different platform [1/2]

Browse Source 
PD#SWPL-100275

Problem:
Dynamic SHM will be enabled after TDK3.18, but some platform
not support TDK3.18, so compatible different platform.

Solution:
Compatible Dynamic SHM for different platform

Verify:
AndroidU + S7

Change-Id: I57a7f6a557ecf11e085027e0c6338767b0ee5ce0
Signed-off-by: Wentao.Sun <wentao.sun@amlogic.com>
This commit is contained in:
Wentao.Sun
2024-01-05 10:13:27 +08:00
committed by Luan Yuan
parent 6c79b22aef
commit debeb48c29
2 changed files with 32 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/aml_tee/optee/optee_smc.h
+16
View File
@@ -587,6 +587,22 @@ struct optee_smc_disable_shm_cache_result {
#define OPTEE_SMC_GET_LOGGER_CONFIG \
OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_GET_LOGGER_CONFIG)
/*
* Get Dynamic SHM Status
*
* Call register usage:
* a0 SMC Function ID, OPTEE_SMC_GET_DYN_SHM_STATS
* a1-7 Not used
*
* Normal return register usage:
* a0 Get result
* a1 Dynamic SHM Status
* a2-7 Preserved
*/
#define OPTEE_SMC_FUNCID_GET_DYN_SHM_STATS 0xE005
#define OPTEE_SMC_GET_DYN_SHM_STATS \
OPTEE_SMC_FAST_CALL_VAL(OPTEE_SMC_FUNCID_GET_DYN_SHM_STATS)
/* Returned in a0 */
#define OPTEE_SMC_RETURN_UNKNOWN_FUNCTION 0xFFFFFFFF
drivers/aml_tee/optee/smc_abi.c
+16 -2
View File
@@ -1185,6 +1185,17 @@ static bool optee_msg_api_revision_is_compatible(optee_invoke_fn *invoke_fn)
return false;
}
static bool optee_get_dynamic_shm_stats(optee_invoke_fn *invoke_fn)
{
struct arm_smccc_res res;
invoke_fn(OPTEE_SMC_GET_DYN_SHM_STATS, 0, 0, 0, 0, 0, 0, 0, &res);
if (res.a0 == OPTEE_SMC_RETURN_OK && res.a1 == 1)
return true;
return false;
}
static bool optee_msg_exchange_capabilities(optee_invoke_fn *invoke_fn,
u32 *sec_caps, u32 *max_notif_value,
unsigned int *rpc_param_count)
@@ -1410,8 +1421,11 @@ static int optee_probe(struct platform_device *pdev)
return -EINVAL;
}
// disable dynamic share memory
sec_caps &= ~(OPTEE_SMC_SEC_CAP_DYNAMIC_SHM);
/*
* If stats is false, Dynamic Shared Memory will be disabled
*/
if (!optee_get_dynamic_shm_stats(invoke_fn))
sec_caps &= ~(OPTEE_SMC_SEC_CAP_DYNAMIC_SHM);
/*
* Try to use dynamic shared memory if possible