| // SPDX-License-Identifier: BSD-2-Clause |
| /* |
| * Copyright (c) Microsoft Corporation. All rights reserved. |
| */ |
| |
| #include <kernel/thread.h> |
| #include <sm/optee_smc.h> |
| #include <sm/sm.h> |
| #include <trace.h> |
| #include "imx_sip.h" |
| #include "imx_pl310.h" |
| |
| static enum sm_handler_ret imx_sip_handler(struct thread_smc_args *smc_args) |
| { |
| uint16_t sip_func = OPTEE_SMC_FUNC_NUM(smc_args->a0); |
| |
| switch (sip_func) { |
| #ifdef CFG_PL310_SIP_PROTOCOL |
| case IMX_SIP_PL310_ENABLE: |
| smc_args->a0 = pl310_enable(); |
| break; |
| case IMX_SIP_PL310_DISABLE: |
| smc_args->a0 = pl310_disable(); |
| break; |
| case IMX_SIP_PL310_ENABLE_WRITEBACK: |
| smc_args->a0 = pl310_enable_writeback(); |
| break; |
| case IMX_SIP_PL310_DISABLE_WRITEBACK: |
| smc_args->a0 = pl310_disable_writeback(); |
| break; |
| case IMX_SIP_PL310_ENABLE_WFLZ: |
| smc_args->a0 = pl310_enable_wflz(); |
| break; |
| #endif |
| default: |
| EMSG("Invalid SIP function code: 0x%x", sip_func); |
| smc_args->a0 = OPTEE_SMC_RETURN_EBADCMD; |
| break; |
| } |
| |
| return SM_HANDLER_SMC_HANDLED; |
| } |
| |
| enum sm_handler_ret sm_platform_handler(struct sm_ctx *ctx) |
| { |
| uint32_t *nsec_r0 = (uint32_t *)(&ctx->nsec.r0); |
| uint16_t smc_owner = OPTEE_SMC_OWNER_NUM(*nsec_r0); |
| |
| switch (smc_owner) { |
| case OPTEE_SMC_OWNER_SIP: |
| return imx_sip_handler((struct thread_smc_args *)nsec_r0); |
| default: |
| return SM_HANDLER_PENDING_SMC; |
| } |
| } |