static int
scc2_test_engage_part(unsigned long scc_data)
{
uint8_t umid[16];
scc_partition_access acc;
int status;
uint8_t* umid_ptr = NULL;
printk(KERN_ALERT "calling copy_from_user\n");
status = copy_from_user(&acc, (void*)scc_data, sizeof(acc));
if (status == 0) {
if (acc.umid != NULL) {
printk(KERN_ALERT "calling copy_from_user\n");
status = copy_from_user(umid, acc.umid, 16);
umid_ptr = umid;
}
if (status == 0) {
printk(KERN_ALERT "calling engage_partition\n");
acc.scc_status = scc_engage_partition((void*)acc.virt_address,
umid_ptr,
acc.permissions);
status = copy_to_user((void*)scc_data, &acc, sizeof(acc));
}
}
return status;
}
void *fsl_shw_smalloc(fsl_shw_uco_t * user_ctx,
uint32_t size, const uint8_t * UMID, uint32_t permissions)
{
#ifdef FSL_HAVE_SCC2
int part_no;
void *part_base;
uint32_t part_phys;
scc_config_t *scc_configuration;
/* Check that the memory size requested is correct */
scc_configuration = scc_get_configuration();
if (size != scc_configuration->partition_size_bytes) {
return NULL;
}
/* Attempt to grab a partition. */
if (scc_allocate_partition(0, &part_no, &part_base, &part_phys)
!= SCC_RET_OK) {
return NULL;
}
printk(KERN_ALERT "In fsh_shw_smalloc (km): partition_base:%p "
"partition_base_phys: %p\n", part_base, (void *)part_phys);
/* these bits should be in a separate function */
printk(KERN_ALERT "writing UMID and MAP to secure the partition\n");
scc_engage_partition(part_base, UMID, permissions);
(void)user_ctx; /* unused param warning */
return part_base;
#else /* FSL_HAVE_SCC2 */
(void)user_ctx;
(void)size;
(void)UMID;
(void)permissions;
return NULL;
#endif /* FSL_HAVE_SCC2 */
}