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// SPDX-License-Identifier: BSD-2-Clause
/*
* Copyright (c) 2018, Linaro Limited
*/
#include <common.h>
#include <log.h>
#include <tee.h>
#include <linux/types.h>
#include "optee_msg.h"
#include "optee_msg_supplicant.h"
#include "optee_private.h"
#include "optee_smc.h"
static void cmd_shm_alloc(struct udevice *dev, struct optee_msg_arg *arg,
void **page_list)
{
int rc;
struct tee_shm *shm;
void *pl;
u64 ph_ptr;
arg->ret_origin = TEE_ORIGIN_COMMS;
if (arg->num_params != 1 ||
arg->params[0].attr != OPTEE_MSG_ATTR_TYPE_VALUE_INPUT) {
arg->ret = TEE_ERROR_BAD_PARAMETERS;
return;
}
rc = __tee_shm_add(dev, 0, NULL, arg->params[0].u.value.b,
TEE_SHM_REGISTER | TEE_SHM_ALLOC, &shm);
if (rc) {
if (rc == -ENOMEM)
arg->ret = TEE_ERROR_OUT_OF_MEMORY;
else
arg->ret = TEE_ERROR_GENERIC;
return;
}
pl = optee_alloc_and_init_page_list(shm->addr, shm->size, &ph_ptr);
if (!pl) {
arg->ret = TEE_ERROR_OUT_OF_MEMORY;
tee_shm_free(shm);
return;
}
*page_list = pl;
arg->params[0].attr = OPTEE_MSG_ATTR_TYPE_TMEM_OUTPUT |
OPTEE_MSG_ATTR_NONCONTIG;
arg->params[0].u.tmem.buf_ptr = ph_ptr;
arg->params[0].u.tmem.size = shm->size;
arg->params[0].u.tmem.shm_ref = (ulong)shm;
arg->ret = TEE_SUCCESS;
}
static void cmd_shm_free(struct optee_msg_arg *arg)
{
arg->ret_origin = TEE_ORIGIN_COMMS;
if (arg->num_params != 1 ||
arg->params[0].attr != OPTEE_MSG_ATTR_TYPE_VALUE_INPUT) {
arg->ret = TEE_ERROR_BAD_PARAMETERS;
return;
}
tee_shm_free((struct tee_shm *)(ulong)arg->params[0].u.value.b);
arg->ret = TEE_SUCCESS;
}
void optee_suppl_cmd(struct udevice *dev, struct tee_shm *shm_arg,
void **page_list)
{
struct optee_msg_arg *arg = shm_arg->addr;
switch (arg->cmd) {
case OPTEE_MSG_RPC_CMD_SHM_ALLOC:
cmd_shm_alloc(dev, arg, page_list);
break;
case OPTEE_MSG_RPC_CMD_SHM_FREE:
cmd_shm_free(arg);
break;
case OPTEE_MSG_RPC_CMD_FS:
debug("REE FS storage isn't available\n");
arg->ret = TEE_ERROR_STORAGE_NOT_AVAILABLE;
break;
case OPTEE_MSG_RPC_CMD_RPMB:
optee_suppl_cmd_rpmb(dev, arg);
break;
default:
arg->ret = TEE_ERROR_NOT_IMPLEMENTED;
}
arg->ret_origin = TEE_ORIGIN_COMMS;
}
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