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/*
* Copyright (c) 2022, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*
*/
#include <host_realm_rmi.h>
#include <lib/aarch64/arch_features.h>
#include <realm_rsi.h>
#include <smccc.h>
static struct rsi_host_call host_cal __aligned(sizeof(struct rsi_host_call));
/* This function return RSI_ABI_VERSION */
u_register_t rsi_get_version(void)
{
smc_ret_values res = {};
res = tftf_smc(&(smc_args)
{RSI_ABI_VERSION, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL});
return res.ret0;
}
/* This function will call the Host to request IPA of the NS shared buffer */
u_register_t rsi_get_ns_buffer(void)
{
smc_ret_values res = {};
host_cal.imm = HOST_CALL_GET_SHARED_BUFF_CMD;
res = tftf_smc(&(smc_args) {RSI_HOST_CALL, (u_register_t)&host_cal,
0UL, 0UL, 0UL, 0UL, 0UL, 0UL});
if (res.ret0 != RSI_SUCCESS) {
return 0U;
}
return host_cal.gprs[0];
}
/* This function call Host and request to exit Realm with proper exit code */
void rsi_exit_to_host(enum host_call_cmd exit_code)
{
host_cal.imm = exit_code;
tftf_smc(&(smc_args) {RSI_HOST_CALL, (u_register_t)&host_cal,
0UL, 0UL, 0UL, 0UL, 0UL, 0UL});
}
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