TZ_RESULT UREE_ReleaseTzmem (int *fd_p)
{
int fd;
int ret = TZ_RESULT_SUCCESS;
UREE_SESSION_HANDLE session;
uint32_t size;
if (fd_p == NULL)
{
return TZ_RESULT_ERROR_BAD_PARAMETERS;
}
pthread_mutex_lock(&mtee_tzmemInfo.mutex);
if (mtee_tzmemInfo.control != 0)
{
ret = TZ_RESULT_ERROR_GENERIC;
goto out;
}
ret = UREE_CreateSession(TZ_TA_MEM_UUID, &session);
if (ret != TZ_RESULT_SUCCESS)
{
printf("UREE_ReleaseTzmem: CreateSession Error = %s\n", TZ_GetErrorString(ret));
goto out;
}
ret = UREE_ReleaseSecurechunkmem (session, 0x0, &size);
printf ("released size = 0x%x\n", size);
if (ret != TZ_RESULT_SUCCESS)
{
ret = TZ_RESULT_ERROR_GENERIC;
goto out_release_fail;
}
fd = open("/dev/tzmem", O_RDWR);
if (fd < 0)
{
ret = TZ_RESULT_ERROR_GENERIC;
goto out_release_fail;
}
else
{
*fd_p = fd;
}
mtee_tzmemInfo.session = session;
mtee_tzmemInfo.control = 1;
pthread_mutex_unlock(&mtee_tzmemInfo.mutex);
return ret;
out_release_fail:
UREE_CloseSession (session);
out:
pthread_mutex_unlock(&mtee_tzmemInfo.mutex);
return ret;
}
int main(int argc, char *argv[])
{
TZ_RESULT ret;
UREE_SESSION_HANDLE dbg_session;
UREE_SECUREMEM_INFO info;
printf ("Run memory CA\n");
ret = UREE_CreateSession(TZ_TA_DBG_UUID, &dbg_session);
if (ret != TZ_RESULT_SUCCESS)
{
// Should provide strerror style error string in UREE.
printf("CreateSession Error: %s\n", TZ_GetErrorString(ret));
return 1;
}
// get secure memory information
ret = UREE_GetSecurememinfo (dbg_session, &info);
if (ret != TZ_RESULT_SUCCESS)
{
printf("UREE_GetSecurememinfo Error: %s\n", TZ_GetErrorString(ret));
return 0;
}
printf ("secure memory: Used = 0x%x bytes, Total = 0x%x bytes,\n"
" Max free continuous mem sz = 0x%x bytes\n"
" Max foot print = 0x%x bytes\n"
, info.used_byte, info.total_byte, info.max_free_cont_mem_sz, info.max_foot_print);
// get secure chunk memory information
ret = UREE_GetSecurechunkmeminfo (dbg_session, &info);
if (ret != TZ_RESULT_SUCCESS)
{
printf("UREE_GetSecurechunkmeminfo Error: %s\n", TZ_GetErrorString(ret));
return 0;
}
printf ("secure chunk memory: Used = 0x%x bytes, Total = 0x%x bytes,\n"
" Max free continuous mem sz = 0x%x bytes\n"
" Max foot print = 0x%x bytes\n"
, info.used_byte, info.total_byte, info.max_free_cont_mem_sz, info.max_foot_print);
ret = UREE_CloseSession(dbg_session);
if (ret != TZ_RESULT_SUCCESS)
{
printf("CloseSeesion dbg_session_A Error: %d\n", ret);
}
printf ("Memory CA done\n");
return 0;
}
