/* * Copyright (c) 2013-2020, ARM Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ /* Top level SMC handler for SiP calls. Dispatch PM calls to PM SMC handler. */ #include #include #include "ipi_mailbox_svc.h" #include "pm_svc_main.h" /* SMC function IDs for SiP Service queries */ #define ZYNQMP_SIP_SVC_CALL_COUNT U(0x8200ff00) #define ZYNQMP_SIP_SVC_UID U(0x8200ff01) #define ZYNQMP_SIP_SVC_VERSION U(0x8200ff03) /* SiP Service Calls version numbers */ #define SIP_SVC_VERSION_MAJOR 0 #define SIP_SVC_VERSION_MINOR 1 /* These macros are used to identify PM, IPI calls from the SMC function ID */ #define PM_FID_MASK 0xf000u #define PM_FID_VALUE 0u #define IPI_FID_VALUE 0x1000u #define EM_FID_MASK 0xf0000u #define EM_FID_VALUE 0xE0000u #define is_em_fid(_fid) (((_fid) & EM_FID_MASK) == EM_FID_VALUE) #define is_pm_fid(_fid) (((_fid) & PM_FID_MASK) == PM_FID_VALUE) #define is_ipi_fid(_fid) (((_fid) & PM_FID_MASK) == IPI_FID_VALUE) /* SiP Service UUID */ DEFINE_SVC_UUID2(zynqmp_sip_uuid, 0x5c9b1b2a, 0x0586, 0x2340, 0xa6, 0x1b, 0xb9, 0x25, 0x82, 0x2d, 0xe3, 0xa5); /** * sip_svc_setup() - Setup SiP Service * * Invokes PM setup */ static int32_t sip_svc_setup(void) { /* PM implementation as SiP Service */ return pm_setup(); } /** * sip_svc_smc_handler() - Top-level SiP Service SMC handler * * Handler for all SiP SMC calls. Handles standard SIP requests * and calls PM SMC handler if the call is for a PM-API function. */ static uintptr_t sip_svc_smc_handler(uint32_t smc_fid, u_register_t x1, u_register_t x2, u_register_t x3, u_register_t x4, void *cookie, void *handle, u_register_t flags) { /* Let EM SMC handler deal with EM-related requests */ if (is_em_fid(smc_fid)) { return em_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, flags); } else if (is_pm_fid(smc_fid)) { /* Let PM SMC handler deal with PM-related requests */ return pm_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, flags); } /* Let IPI SMC handler deal with IPI-related requests */ if (is_ipi_fid(smc_fid)) { return ipi_smc_handler(smc_fid, x1, x2, x3, x4, cookie, handle, flags); } switch (smc_fid) { case ZYNQMP_SIP_SVC_CALL_COUNT: /* PM functions + default functions */ SMC_RET1(handle, PM_API_MAX + 2); case ZYNQMP_SIP_SVC_UID: SMC_UUID_RET(handle, zynqmp_sip_uuid); case ZYNQMP_SIP_SVC_VERSION: SMC_RET2(handle, SIP_SVC_VERSION_MAJOR, SIP_SVC_VERSION_MINOR); default: WARN("Unimplemented SiP Service Call: 0x%x\n", smc_fid); SMC_RET1(handle, SMC_UNK); } } /* Register PM Service Calls as runtime service */ DECLARE_RT_SVC( sip_svc, OEN_SIP_START, OEN_SIP_END, (uint8_t)SMC_TYPE_FAST, sip_svc_setup, sip_svc_smc_handler);