--- /dev/null
+OP-TEE Dispatcher
+=================
+
+[OP-TEE OS] is a Trusted OS running as Secure EL1.
+
+To build and execute [OP-TEE OS] follow the instructions at
+[ARM Trusted Firmware with OP-TEE] [OP-TEE OS]
+
+- - - - - - - - - - - - - - - - - - - - - - - - - -
+
+_Copyright (c) 2014, ARM Limited and Contributors. All rights reserved._
+
+[OP-TEE OS]: http://github.com/OP-TEE/optee_os/tree/master/documentation/arm_trusted_firmware.md
--- /dev/null
+#
+# Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# Redistributions of source code must retain the above copyright notice, this
+# list of conditions and the following disclaimer.
+#
+# Redistributions in binary form must reproduce the above copyright notice,
+# this list of conditions and the following disclaimer in the documentation
+# and/or other materials provided with the distribution.
+#
+# Neither the name of ARM nor the names of its contributors may be used
+# to endorse or promote products derived from this software without specific
+# prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+OPTEED_DIR := services/spd/opteed
+SPD_INCLUDES :=
+
+SPD_SOURCES := services/spd/opteed/opteed_common.c \
+ services/spd/opteed/opteed_helpers.S \
+ services/spd/opteed/opteed_main.c \
+ services/spd/opteed/opteed_pm.c
+
+NEED_BL32 := yes
--- /dev/null
+/*
+ * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <arch_helpers.h>
+#include <assert.h>
+#include <bl_common.h>
+#include <context_mgmt.h>
+#include <string.h>
+#include "opteed_private.h"
+
+/*******************************************************************************
+ * Given a OPTEE entrypoint info pointer, entry point PC, register width,
+ * cpu id & pointer to a context data structure, this function will
+ * initialize OPTEE context and entry point info for OPTEE.
+ ******************************************************************************/
+void opteed_init_optee_ep_state(struct entry_point_info *optee_entry_point,
+ uint32_t rw, uint64_t pc,
+ optee_context_t *optee_ctx)
+{
+ uint32_t ep_attr;
+
+ /* Passing a NULL context is a critical programming error */
+ assert(optee_ctx);
+ assert(optee_entry_point);
+ assert(pc);
+
+ /* Associate this context with the cpu specified */
+ optee_ctx->mpidr = read_mpidr_el1();
+ optee_ctx->state = 0;
+ set_optee_pstate(optee_ctx->state, OPTEE_PSTATE_OFF);
+
+ cm_set_context(&optee_ctx->cpu_ctx, SECURE);
+
+ /* initialise an entrypoint to set up the CPU context */
+ ep_attr = SECURE | EP_ST_ENABLE;
+ if (read_sctlr_el3() & SCTLR_EE_BIT)
+ ep_attr |= EP_EE_BIG;
+ SET_PARAM_HEAD(optee_entry_point, PARAM_EP, VERSION_1, ep_attr);
+ optee_entry_point->pc = pc;
+ if (rw == OPTEE_AARCH64)
+ optee_entry_point->spsr = SPSR_64(MODE_EL1, MODE_SP_ELX,
+ DISABLE_ALL_EXCEPTIONS);
+ else
+ optee_entry_point->spsr = SPSR_MODE32(MODE32_svc, SPSR_T_ARM,
+ SPSR_E_LITTLE,
+ DAIF_FIQ_BIT |
+ DAIF_IRQ_BIT |
+ DAIF_ABT_BIT);
+ memset(&optee_entry_point->args, 0, sizeof(optee_entry_point->args));
+}
+
+/*******************************************************************************
+ * This function takes an OPTEE context pointer and:
+ * 1. Applies the S-EL1 system register context from optee_ctx->cpu_ctx.
+ * 2. Saves the current C runtime state (callee saved registers) on the stack
+ * frame and saves a reference to this state.
+ * 3. Calls el3_exit() so that the EL3 system and general purpose registers
+ * from the optee_ctx->cpu_ctx are used to enter the OPTEE image.
+ ******************************************************************************/
+uint64_t opteed_synchronous_sp_entry(optee_context_t *optee_ctx)
+{
+ uint64_t rc;
+
+ assert(optee_ctx != NULL);
+ assert(optee_ctx->c_rt_ctx == 0);
+
+ /* Apply the Secure EL1 system register context and switch to it */
+ assert(cm_get_context(SECURE) == &optee_ctx->cpu_ctx);
+ cm_el1_sysregs_context_restore(SECURE);
+ cm_set_next_eret_context(SECURE);
+
+ rc = opteed_enter_sp(&optee_ctx->c_rt_ctx);
+#if DEBUG
+ optee_ctx->c_rt_ctx = 0;
+#endif
+
+ return rc;
+}
+
+
+/*******************************************************************************
+ * This function takes an OPTEE context pointer and:
+ * 1. Saves the S-EL1 system register context tp optee_ctx->cpu_ctx.
+ * 2. Restores the current C runtime state (callee saved registers) from the
+ * stack frame using the reference to this state saved in opteed_enter_sp().
+ * 3. It does not need to save any general purpose or EL3 system register state
+ * as the generic smc entry routine should have saved those.
+ ******************************************************************************/
+void opteed_synchronous_sp_exit(optee_context_t *optee_ctx, uint64_t ret)
+{
+ assert(optee_ctx != NULL);
+ /* Save the Secure EL1 system register context */
+ assert(cm_get_context(SECURE) == &optee_ctx->cpu_ctx);
+ cm_el1_sysregs_context_save(SECURE);
+
+ assert(optee_ctx->c_rt_ctx != 0);
+ opteed_exit_sp(optee_ctx->c_rt_ctx, ret);
+
+ /* Should never reach here */
+ assert(0);
+}
--- /dev/null
+/*
+ * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <asm_macros.S>
+#include "opteed_private.h"
+
+ .global opteed_enter_sp
+ /* ---------------------------------------------
+ * This function is called with SP_EL0 as stack.
+ * Here we stash our EL3 callee-saved registers
+ * on to the stack as a part of saving the C
+ * runtime and enter the secure payload.
+ * 'x0' contains a pointer to the memory where
+ * the address of the C runtime context is to be
+ * saved.
+ * ---------------------------------------------
+ */
+func opteed_enter_sp
+ /* Make space for the registers that we're going to save */
+ mov x3, sp
+ str x3, [x0, #0]
+ sub sp, sp, #OPTEED_C_RT_CTX_SIZE
+
+ /* Save callee-saved registers on to the stack */
+ stp x19, x20, [sp, #OPTEED_C_RT_CTX_X19]
+ stp x21, x22, [sp, #OPTEED_C_RT_CTX_X21]
+ stp x23, x24, [sp, #OPTEED_C_RT_CTX_X23]
+ stp x25, x26, [sp, #OPTEED_C_RT_CTX_X25]
+ stp x27, x28, [sp, #OPTEED_C_RT_CTX_X27]
+ stp x29, x30, [sp, #OPTEED_C_RT_CTX_X29]
+
+ /* ---------------------------------------------
+ * Everything is setup now. el3_exit() will
+ * use the secure context to restore to the
+ * general purpose and EL3 system registers to
+ * ERET into OPTEE.
+ * ---------------------------------------------
+ */
+ b el3_exit
+
+ /* ---------------------------------------------
+ * This function is called 'x0' pointing to a C
+ * runtime context saved in opteed_enter_sp(). It
+ * restores the saved registers and jumps to
+ * that runtime with 'x0' as the new sp. This
+ * destroys the C runtime context that had been
+ * built on the stack below the saved context by
+ * the caller. Later the second parameter 'x1'
+ * is passed as return value to the caller
+ * ---------------------------------------------
+ */
+ .global opteed_exit_sp
+func opteed_exit_sp
+ /* Restore the previous stack */
+ mov sp, x0
+
+ /* Restore callee-saved registers on to the stack */
+ ldp x19, x20, [x0, #(OPTEED_C_RT_CTX_X19 - OPTEED_C_RT_CTX_SIZE)]
+ ldp x21, x22, [x0, #(OPTEED_C_RT_CTX_X21 - OPTEED_C_RT_CTX_SIZE)]
+ ldp x23, x24, [x0, #(OPTEED_C_RT_CTX_X23 - OPTEED_C_RT_CTX_SIZE)]
+ ldp x25, x26, [x0, #(OPTEED_C_RT_CTX_X25 - OPTEED_C_RT_CTX_SIZE)]
+ ldp x27, x28, [x0, #(OPTEED_C_RT_CTX_X27 - OPTEED_C_RT_CTX_SIZE)]
+ ldp x29, x30, [x0, #(OPTEED_C_RT_CTX_X29 - OPTEED_C_RT_CTX_SIZE)]
+
+ /* ---------------------------------------------
+ * This should take us back to the instruction
+ * after the call to the last opteed_enter_sp().
+ * Place the second parameter to x0 so that the
+ * caller will see it as a return value from the
+ * original entry call
+ * ---------------------------------------------
+ */
+ mov x0, x1
+ ret
--- /dev/null
+/*
+ * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+/*******************************************************************************
+ * This is the Secure Payload Dispatcher (SPD). The dispatcher is meant to be a
+ * plug-in component to the Secure Monitor, registered as a runtime service. The
+ * SPD is expected to be a functional extension of the Secure Payload (SP) that
+ * executes in Secure EL1. The Secure Monitor will delegate all SMCs targeting
+ * the Trusted OS/Applications range to the dispatcher. The SPD will either
+ * handle the request locally or delegate it to the Secure Payload. It is also
+ * responsible for initialising and maintaining communication with the SP.
+ ******************************************************************************/
+#include <arch_helpers.h>
+#include <assert.h>
+#include <bl_common.h>
+#include <bl31.h>
+#include <context_mgmt.h>
+#include <debug.h>
+#include <errno.h>
+#include <platform.h>
+#include <runtime_svc.h>
+#include <stddef.h>
+#include <uuid.h>
+#include "opteed_private.h"
+#include "teesmc_opteed_macros.h"
+#include "teesmc_opteed.h"
+
+/*******************************************************************************
+ * Address of the entrypoint vector table in OPTEE. It is
+ * initialised once on the primary core after a cold boot.
+ ******************************************************************************/
+optee_vectors_t *optee_vectors;
+
+/*******************************************************************************
+ * Array to keep track of per-cpu OPTEE state
+ ******************************************************************************/
+optee_context_t opteed_sp_context[OPTEED_CORE_COUNT];
+uint32_t opteed_rw;
+
+
+
+static int32_t opteed_init(void);
+
+/*******************************************************************************
+ * This function is the handler registered for S-EL1 interrupts by the
+ * OPTEED. It validates the interrupt and upon success arranges entry into
+ * the OPTEE at 'optee_fiq_entry()' for handling the interrupt.
+ ******************************************************************************/
+static uint64_t opteed_sel1_interrupt_handler(uint32_t id,
+ uint32_t flags,
+ void *handle,
+ void *cookie)
+{
+ uint32_t linear_id;
+ uint64_t mpidr;
+ optee_context_t *optee_ctx;
+
+ /* Check the security state when the exception was generated */
+ assert(get_interrupt_src_ss(flags) == NON_SECURE);
+
+#if IMF_READ_INTERRUPT_ID
+ /* Check the security status of the interrupt */
+ assert(plat_ic_get_interrupt_type(id) == INTR_TYPE_S_EL1);
+#endif
+
+ /* Sanity check the pointer to this cpu's context */
+ mpidr = read_mpidr();
+ assert(handle == cm_get_context(NON_SECURE));
+
+ /* Save the non-secure context before entering the OPTEE */
+ cm_el1_sysregs_context_save(NON_SECURE);
+
+ /* Get a reference to this cpu's OPTEE context */
+ linear_id = platform_get_core_pos(mpidr);
+ optee_ctx = &opteed_sp_context[linear_id];
+ assert(&optee_ctx->cpu_ctx == cm_get_context(SECURE));
+
+ cm_set_elr_el3(SECURE, (uint64_t)&optee_vectors->fiq_entry);
+ cm_el1_sysregs_context_restore(SECURE);
+ cm_set_next_eret_context(SECURE);
+
+ /*
+ * Tell the OPTEE that it has to handle an FIQ (synchronously).
+ * Also the instruction in normal world where the interrupt was
+ * generated is passed for debugging purposes. It is safe to
+ * retrieve this address from ELR_EL3 as the secure context will
+ * not take effect until el3_exit().
+ */
+ SMC_RET1(&optee_ctx->cpu_ctx, read_elr_el3());
+}
+
+/*******************************************************************************
+ * OPTEE Dispatcher setup. The OPTEED finds out the OPTEE entrypoint and type
+ * (aarch32/aarch64) if not already known and initialises the context for entry
+ * into OPTEE for its initialization.
+ ******************************************************************************/
+int32_t opteed_setup(void)
+{
+ entry_point_info_t *optee_ep_info;
+ uint64_t mpidr = read_mpidr();
+ uint32_t linear_id;
+
+ linear_id = platform_get_core_pos(mpidr);
+
+ /*
+ * Get information about the Secure Payload (BL32) image. Its
+ * absence is a critical failure. TODO: Add support to
+ * conditionally include the SPD service
+ */
+ optee_ep_info = bl31_plat_get_next_image_ep_info(SECURE);
+ if (!optee_ep_info) {
+ WARN("No OPTEE provided by BL2 boot loader, Booting device"
+ " without OPTEE initialization. SMC`s destined for OPTEE"
+ " will return SMC_UNK\n");
+ return 1;
+ }
+
+ /*
+ * If there's no valid entry point for SP, we return a non-zero value
+ * signalling failure initializing the service. We bail out without
+ * registering any handlers
+ */
+ if (!optee_ep_info->pc)
+ return 1;
+
+ /*
+ * We could inspect the SP image and determine it's execution
+ * state i.e whether AArch32 or AArch64. Assuming it's AArch32
+ * for the time being.
+ */
+ opteed_rw = OPTEE_AARCH32;
+ opteed_init_optee_ep_state(optee_ep_info,
+ opteed_rw,
+ optee_ep_info->pc,
+ &opteed_sp_context[linear_id]);
+
+ /*
+ * All OPTEED initialization done. Now register our init function with
+ * BL31 for deferred invocation
+ */
+ bl31_register_bl32_init(&opteed_init);
+
+ return 0;
+}
+
+/*******************************************************************************
+ * This function passes control to the OPTEE image (BL32) for the first time
+ * on the primary cpu after a cold boot. It assumes that a valid secure
+ * context has already been created by opteed_setup() which can be directly
+ * used. It also assumes that a valid non-secure context has been
+ * initialised by PSCI so it does not need to save and restore any
+ * non-secure state. This function performs a synchronous entry into
+ * OPTEE. OPTEE passes control back to this routine through a SMC.
+ ******************************************************************************/
+static int32_t opteed_init(void)
+{
+ uint64_t mpidr = read_mpidr();
+ uint32_t linear_id = platform_get_core_pos(mpidr);
+ optee_context_t *optee_ctx = &opteed_sp_context[linear_id];
+ entry_point_info_t *optee_entry_point;
+ uint64_t rc;
+
+ /*
+ * Get information about the OPTEE (BL32) image. Its
+ * absence is a critical failure.
+ */
+ optee_entry_point = bl31_plat_get_next_image_ep_info(SECURE);
+ assert(optee_entry_point);
+
+ cm_init_context(mpidr, optee_entry_point);
+
+ /*
+ * Arrange for an entry into OPTEE. It will be returned via
+ * OPTEE_ENTRY_DONE case
+ */
+ rc = opteed_synchronous_sp_entry(optee_ctx);
+ assert(rc != 0);
+
+ return rc;
+}
+
+
+/*******************************************************************************
+ * This function is responsible for handling all SMCs in the Trusted OS/App
+ * range from the non-secure state as defined in the SMC Calling Convention
+ * Document. It is also responsible for communicating with the Secure
+ * payload to delegate work and return results back to the non-secure
+ * state. Lastly it will also return any information that OPTEE needs to do
+ * the work assigned to it.
+ ******************************************************************************/
+uint64_t opteed_smc_handler(uint32_t smc_fid,
+ uint64_t x1,
+ uint64_t x2,
+ uint64_t x3,
+ uint64_t x4,
+ void *cookie,
+ void *handle,
+ uint64_t flags)
+{
+ cpu_context_t *ns_cpu_context;
+ unsigned long mpidr = read_mpidr();
+ uint32_t linear_id = platform_get_core_pos(mpidr);
+ optee_context_t *optee_ctx = &opteed_sp_context[linear_id];
+ uint64_t rc;
+
+ /*
+ * Determine which security state this SMC originated from
+ */
+
+ if (is_caller_non_secure(flags)) {
+ /*
+ * This is a fresh request from the non-secure client.
+ * The parameters are in x1 and x2. Figure out which
+ * registers need to be preserved, save the non-secure
+ * state and send the request to the secure payload.
+ */
+ assert(handle == cm_get_context(NON_SECURE));
+
+ cm_el1_sysregs_context_save(NON_SECURE);
+
+ /*
+ * We are done stashing the non-secure context. Ask the
+ * OPTEE to do the work now.
+ */
+
+ /*
+ * Verify if there is a valid context to use, copy the
+ * operation type and parameters to the secure context
+ * and jump to the fast smc entry point in the secure
+ * payload. Entry into S-EL1 will take place upon exit
+ * from this function.
+ */
+ assert(&optee_ctx->cpu_ctx == cm_get_context(SECURE));
+
+ /* Set appropriate entry for SMC.
+ * We expect OPTEE to manage the PSTATE.I and PSTATE.F
+ * flags as appropriate.
+ */
+ if (GET_SMC_TYPE(smc_fid) == SMC_TYPE_FAST) {
+ cm_set_elr_el3(SECURE, (uint64_t)
+ &optee_vectors->fast_smc_entry);
+ } else {
+ cm_set_elr_el3(SECURE, (uint64_t)
+ &optee_vectors->std_smc_entry);
+ }
+
+ cm_el1_sysregs_context_restore(SECURE);
+ cm_set_next_eret_context(SECURE);
+
+ /* Propagate hypervisor client ID */
+ write_ctx_reg(get_gpregs_ctx(&optee_ctx->cpu_ctx),
+ CTX_GPREG_X7,
+ read_ctx_reg(get_gpregs_ctx(handle),
+ CTX_GPREG_X7));
+
+ SMC_RET4(&optee_ctx->cpu_ctx, smc_fid, x1, x2, x3);
+ }
+
+ /*
+ * Returning from OPTEE
+ */
+
+ switch (smc_fid) {
+ /*
+ * OPTEE has finished initialising itself after a cold boot
+ */
+ case TEESMC_OPTEED_RETURN_ENTRY_DONE:
+ /*
+ * Stash the OPTEE entry points information. This is done
+ * only once on the primary cpu
+ */
+ assert(optee_vectors == NULL);
+ optee_vectors = (optee_vectors_t *) x1;
+
+ if (optee_vectors) {
+ set_optee_pstate(optee_ctx->state, OPTEE_PSTATE_ON);
+
+ /*
+ * OPTEE has been successfully initialized.
+ * Register power management hooks with PSCI
+ */
+ psci_register_spd_pm_hook(&opteed_pm);
+
+ /*
+ * Register an interrupt handler for S-EL1 interrupts
+ * when generated during code executing in the
+ * non-secure state.
+ */
+ flags = 0;
+ set_interrupt_rm_flag(flags, NON_SECURE);
+ rc = register_interrupt_type_handler(INTR_TYPE_S_EL1,
+ opteed_sel1_interrupt_handler,
+ flags);
+ if (rc)
+ panic();
+ }
+
+ /*
+ * OPTEE reports completion. The OPTEED must have initiated
+ * the original request through a synchronous entry into
+ * OPTEE. Jump back to the original C runtime context.
+ */
+ opteed_synchronous_sp_exit(optee_ctx, x1);
+
+
+ /*
+ * These function IDs is used only by OP-TEE to indicate it has
+ * finished:
+ * 1. turning itself on in response to an earlier psci
+ * cpu_on request
+ * 2. resuming itself after an earlier psci cpu_suspend
+ * request.
+ */
+ case TEESMC_OPTEED_RETURN_ON_DONE:
+ case TEESMC_OPTEED_RETURN_RESUME_DONE:
+
+
+ /*
+ * These function IDs is used only by the SP to indicate it has
+ * finished:
+ * 1. suspending itself after an earlier psci cpu_suspend
+ * request.
+ * 2. turning itself off in response to an earlier psci
+ * cpu_off request.
+ */
+ case TEESMC_OPTEED_RETURN_OFF_DONE:
+ case TEESMC_OPTEED_RETURN_SUSPEND_DONE:
+ case TEESMC_OPTEED_RETURN_SYSTEM_OFF_DONE:
+ case TEESMC_OPTEED_RETURN_SYSTEM_RESET_DONE:
+
+ /*
+ * OPTEE reports completion. The OPTEED must have initiated the
+ * original request through a synchronous entry into OPTEE.
+ * Jump back to the original C runtime context, and pass x1 as
+ * return value to the caller
+ */
+ opteed_synchronous_sp_exit(optee_ctx, x1);
+
+ /*
+ * OPTEE is returning from a call or being preempted from a call, in
+ * either case execution should resume in the normal world.
+ */
+ case TEESMC_OPTEED_RETURN_CALL_DONE:
+ /*
+ * This is the result from the secure client of an
+ * earlier request. The results are in x0-x3. Copy it
+ * into the non-secure context, save the secure state
+ * and return to the non-secure state.
+ */
+ assert(handle == cm_get_context(SECURE));
+ cm_el1_sysregs_context_save(SECURE);
+
+ /* Get a reference to the non-secure context */
+ ns_cpu_context = cm_get_context(NON_SECURE);
+ assert(ns_cpu_context);
+
+ /* Restore non-secure state */
+ cm_el1_sysregs_context_restore(NON_SECURE);
+ cm_set_next_eret_context(NON_SECURE);
+
+ SMC_RET4(ns_cpu_context, x1, x2, x3, x4);
+
+ /*
+ * OPTEE has finished handling a S-EL1 FIQ interrupt. Execution
+ * should resume in the normal world.
+ */
+ case TEESMC_OPTEED_RETURN_FIQ_DONE:
+ /* Get a reference to the non-secure context */
+ ns_cpu_context = cm_get_context(NON_SECURE);
+ assert(ns_cpu_context);
+
+ /*
+ * Restore non-secure state. There is no need to save the
+ * secure system register context since OPTEE was supposed
+ * to preserve it during S-EL1 interrupt handling.
+ */
+ cm_el1_sysregs_context_restore(NON_SECURE);
+ cm_set_next_eret_context(NON_SECURE);
+
+ SMC_RET0((uint64_t) ns_cpu_context);
+
+ default:
+ panic();
+ }
+}
+
+/* Define an OPTEED runtime service descriptor for fast SMC calls */
+DECLARE_RT_SVC(
+ opteed_fast,
+
+ OEN_TOS_START,
+ OEN_TOS_END,
+ SMC_TYPE_FAST,
+ opteed_setup,
+ opteed_smc_handler
+);
+
+/* Define an OPTEED runtime service descriptor for standard SMC calls */
+DECLARE_RT_SVC(
+ opteed_std,
+
+ OEN_TOS_START,
+ OEN_TOS_END,
+ SMC_TYPE_STD,
+ NULL,
+ opteed_smc_handler
+);
--- /dev/null
+/*
+ * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <arch_helpers.h>
+#include <assert.h>
+#include <bl_common.h>
+#include <context_mgmt.h>
+#include <debug.h>
+#include <platform.h>
+#include "opteed_private.h"
+
+/*******************************************************************************
+ * The target cpu is being turned on. Allow the OPTEED/OPTEE to perform any
+ * actions needed. Nothing at the moment.
+ ******************************************************************************/
+static void opteed_cpu_on_handler(uint64_t target_cpu)
+{
+}
+
+/*******************************************************************************
+ * This cpu is being turned off. Allow the OPTEED/OPTEE to perform any actions
+ * needed
+ ******************************************************************************/
+static int32_t opteed_cpu_off_handler(uint64_t cookie)
+{
+ int32_t rc = 0;
+ uint64_t mpidr = read_mpidr();
+ uint32_t linear_id = platform_get_core_pos(mpidr);
+ optee_context_t *optee_ctx = &opteed_sp_context[linear_id];
+
+ assert(optee_vectors);
+ assert(get_optee_pstate(optee_ctx->state) == OPTEE_PSTATE_ON);
+
+ /* Program the entry point and enter OPTEE */
+ cm_set_elr_el3(SECURE, (uint64_t) &optee_vectors->cpu_off_entry);
+ rc = opteed_synchronous_sp_entry(optee_ctx);
+
+ /*
+ * Read the response from OPTEE. A non-zero return means that
+ * something went wrong while communicating with OPTEE.
+ */
+ if (rc != 0)
+ panic();
+
+ /*
+ * Reset OPTEE's context for a fresh start when this cpu is turned on
+ * subsequently.
+ */
+ set_optee_pstate(optee_ctx->state, OPTEE_PSTATE_OFF);
+
+ return 0;
+}
+
+/*******************************************************************************
+ * This cpu is being suspended. S-EL1 state must have been saved in the
+ * resident cpu (mpidr format) if it is a UP/UP migratable OPTEE.
+ ******************************************************************************/
+static void opteed_cpu_suspend_handler(uint64_t power_state)
+{
+ int32_t rc = 0;
+ uint64_t mpidr = read_mpidr();
+ uint32_t linear_id = platform_get_core_pos(mpidr);
+ optee_context_t *optee_ctx = &opteed_sp_context[linear_id];
+
+ assert(optee_vectors);
+ assert(get_optee_pstate(optee_ctx->state) == OPTEE_PSTATE_ON);
+
+ /* Program the entry point, power_state parameter and enter OPTEE */
+ write_ctx_reg(get_gpregs_ctx(&optee_ctx->cpu_ctx),
+ CTX_GPREG_X0,
+ power_state);
+ cm_set_elr_el3(SECURE, (uint64_t) &optee_vectors->cpu_suspend_entry);
+ rc = opteed_synchronous_sp_entry(optee_ctx);
+
+ /*
+ * Read the response from OPTEE. A non-zero return means that
+ * something went wrong while communicating with OPTEE.
+ */
+ if (rc != 0)
+ panic();
+
+ /* Update its context to reflect the state OPTEE is in */
+ set_optee_pstate(optee_ctx->state, OPTEE_PSTATE_SUSPEND);
+}
+
+/*******************************************************************************
+ * This cpu has been turned on. Enter OPTEE to initialise S-EL1 and other bits
+ * before passing control back to the Secure Monitor. Entry in S-El1 is done
+ * after initialising minimal architectural state that guarantees safe
+ * execution.
+ ******************************************************************************/
+static void opteed_cpu_on_finish_handler(uint64_t cookie)
+{
+ int32_t rc = 0;
+ uint64_t mpidr = read_mpidr();
+ uint32_t linear_id = platform_get_core_pos(mpidr);
+ optee_context_t *optee_ctx = &opteed_sp_context[linear_id];
+ entry_point_info_t optee_on_entrypoint;
+
+ assert(optee_vectors);
+ assert(get_optee_pstate(optee_ctx->state) == OPTEE_PSTATE_OFF);
+
+ opteed_init_optee_ep_state(&optee_on_entrypoint, opteed_rw,
+ (uint64_t)&optee_vectors->cpu_on_entry,
+ optee_ctx);
+
+ /* Initialise this cpu's secure context */
+ cm_init_context(mpidr, &optee_on_entrypoint);
+
+ /* Enter OPTEE */
+ rc = opteed_synchronous_sp_entry(optee_ctx);
+
+ /*
+ * Read the response from OPTEE. A non-zero return means that
+ * something went wrong while communicating with OPTEE.
+ */
+ if (rc != 0)
+ panic();
+
+ /* Update its context to reflect the state OPTEE is in */
+ set_optee_pstate(optee_ctx->state, OPTEE_PSTATE_ON);
+}
+
+/*******************************************************************************
+ * This cpu has resumed from suspend. The OPTEED saved the OPTEE context when it
+ * completed the preceding suspend call. Use that context to program an entry
+ * into OPTEE to allow it to do any remaining book keeping
+ ******************************************************************************/
+static void opteed_cpu_suspend_finish_handler(uint64_t suspend_level)
+{
+ int32_t rc = 0;
+ uint64_t mpidr = read_mpidr();
+ uint32_t linear_id = platform_get_core_pos(mpidr);
+ optee_context_t *optee_ctx = &opteed_sp_context[linear_id];
+
+ assert(optee_vectors);
+ assert(get_optee_pstate(optee_ctx->state) == OPTEE_PSTATE_SUSPEND);
+
+ /* Program the entry point, suspend_level and enter the SP */
+ write_ctx_reg(get_gpregs_ctx(&optee_ctx->cpu_ctx),
+ CTX_GPREG_X0,
+ suspend_level);
+ cm_set_elr_el3(SECURE, (uint64_t) &optee_vectors->cpu_resume_entry);
+ rc = opteed_synchronous_sp_entry(optee_ctx);
+
+ /*
+ * Read the response from OPTEE. A non-zero return means that
+ * something went wrong while communicating with OPTEE.
+ */
+ if (rc != 0)
+ panic();
+
+ /* Update its context to reflect the state OPTEE is in */
+ set_optee_pstate(optee_ctx->state, OPTEE_PSTATE_ON);
+}
+
+/*******************************************************************************
+ * Return the type of OPTEE the OPTEED is dealing with. Report the current
+ * resident cpu (mpidr format) if it is a UP/UP migratable OPTEE.
+ ******************************************************************************/
+static int32_t opteed_cpu_migrate_info(uint64_t *resident_cpu)
+{
+ return OPTEE_MIGRATE_INFO;
+}
+
+/*******************************************************************************
+ * System is about to be switched off. Allow the OPTEED/OPTEE to perform
+ * any actions needed.
+ ******************************************************************************/
+static void opteed_system_off(void)
+{
+ uint64_t mpidr = read_mpidr();
+ uint32_t linear_id = platform_get_core_pos(mpidr);
+ optee_context_t *optee_ctx = &opteed_sp_context[linear_id];
+
+ assert(optee_vectors);
+ assert(get_optee_pstate(optee_ctx->state) == OPTEE_PSTATE_ON);
+
+ /* Program the entry point */
+ cm_set_elr_el3(SECURE, (uint64_t) &optee_vectors->system_off_entry);
+
+ /* Enter OPTEE. We do not care about the return value because we
+ * must continue the shutdown anyway */
+ opteed_synchronous_sp_entry(optee_ctx);
+}
+
+/*******************************************************************************
+ * System is about to be reset. Allow the OPTEED/OPTEE to perform
+ * any actions needed.
+ ******************************************************************************/
+static void opteed_system_reset(void)
+{
+ uint64_t mpidr = read_mpidr();
+ uint32_t linear_id = platform_get_core_pos(mpidr);
+ optee_context_t *optee_ctx = &opteed_sp_context[linear_id];
+
+ assert(optee_vectors);
+ assert(get_optee_pstate(optee_ctx->state) == OPTEE_PSTATE_ON);
+
+ /* Program the entry point */
+ cm_set_elr_el3(SECURE, (uint64_t) &optee_vectors->system_reset_entry);
+
+ /* Enter OPTEE. We do not care about the return value because we
+ * must continue the reset anyway */
+ opteed_synchronous_sp_entry(optee_ctx);
+}
+
+
+/*******************************************************************************
+ * Structure populated by the OPTEE Dispatcher to be given a chance to
+ * perform any OPTEE bookkeeping before PSCI executes a power mgmt.
+ * operation.
+ ******************************************************************************/
+const spd_pm_ops_t opteed_pm = {
+ .svc_on = opteed_cpu_on_handler,
+ .svc_off = opteed_cpu_off_handler,
+ .svc_suspend = opteed_cpu_suspend_handler,
+ .svc_on_finish = opteed_cpu_on_finish_handler,
+ .svc_suspend_finish = opteed_cpu_suspend_finish_handler,
+ .svc_migrate = NULL,
+ .svc_migrate_info = opteed_cpu_migrate_info,
+ .svc_system_off = opteed_system_off,
+ .svc_system_reset = opteed_system_reset,
+};
+
--- /dev/null
+/*
+ * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __OPTEED_PRIVATE_H__
+#define __OPTEED_PRIVATE_H__
+
+#include <arch.h>
+#include <context.h>
+#include <interrupt_mgmt.h>
+#include <platform_def.h>
+#include <psci.h>
+
+/*******************************************************************************
+ * OPTEE PM state information e.g. OPTEE is suspended, uninitialised etc
+ * and macros to access the state information in the per-cpu 'state' flags
+ ******************************************************************************/
+#define OPTEE_PSTATE_OFF 0
+#define OPTEE_PSTATE_ON 1
+#define OPTEE_PSTATE_SUSPEND 2
+#define OPTEE_PSTATE_SHIFT 0
+#define OPTEE_PSTATE_MASK 0x3
+#define get_optee_pstate(state) ((state >> OPTEE_PSTATE_SHIFT) & \
+ OPTEE_PSTATE_MASK)
+#define clr_optee_pstate(state) (state &= ~(OPTEE_PSTATE_MASK \
+ << OPTEE_PSTATE_SHIFT))
+#define set_optee_pstate(st, pst) do { \
+ clr_optee_pstate(st); \
+ st |= (pst & OPTEE_PSTATE_MASK) << \
+ OPTEE_PSTATE_SHIFT; \
+ } while (0)
+
+
+/*******************************************************************************
+ * OPTEE execution state information i.e. aarch32 or aarch64
+ ******************************************************************************/
+#define OPTEE_AARCH32 MODE_RW_32
+#define OPTEE_AARCH64 MODE_RW_64
+
+/*******************************************************************************
+ * The OPTEED should know the type of OPTEE
+ ******************************************************************************/
+#define OPTEE_TYPE_UP PSCI_TOS_NOT_UP_MIG_CAP
+#define OPTEE_TYPE_UPM PSCI_TOS_UP_MIG_CAP
+#define OPTEE_TYPE_MP PSCI_TOS_NOT_PRESENT_MP
+
+/*******************************************************************************
+ * OPTEE migrate type information as known to the OPTEED. We assume that
+ * the OPTEED is dealing with an MP Secure Payload.
+ ******************************************************************************/
+#define OPTEE_MIGRATE_INFO OPTEE_TYPE_MP
+
+/*******************************************************************************
+ * Number of cpus that the present on this platform. TODO: Rely on a topology
+ * tree to determine this in the future to avoid assumptions about mpidr
+ * allocation
+ ******************************************************************************/
+#define OPTEED_CORE_COUNT PLATFORM_CORE_COUNT
+
+/*******************************************************************************
+ * Constants that allow assembler code to preserve callee-saved registers of the
+ * C runtime context while performing a security state switch.
+ ******************************************************************************/
+#define OPTEED_C_RT_CTX_X19 0x0
+#define OPTEED_C_RT_CTX_X20 0x8
+#define OPTEED_C_RT_CTX_X21 0x10
+#define OPTEED_C_RT_CTX_X22 0x18
+#define OPTEED_C_RT_CTX_X23 0x20
+#define OPTEED_C_RT_CTX_X24 0x28
+#define OPTEED_C_RT_CTX_X25 0x30
+#define OPTEED_C_RT_CTX_X26 0x38
+#define OPTEED_C_RT_CTX_X27 0x40
+#define OPTEED_C_RT_CTX_X28 0x48
+#define OPTEED_C_RT_CTX_X29 0x50
+#define OPTEED_C_RT_CTX_X30 0x58
+#define OPTEED_C_RT_CTX_SIZE 0x60
+#define OPTEED_C_RT_CTX_ENTRIES (OPTEED_C_RT_CTX_SIZE >> DWORD_SHIFT)
+
+#ifndef __ASSEMBLY__
+
+#include <cassert.h>
+#include <stdint.h>
+
+typedef uint32_t optee_vector_isn_t;
+
+typedef struct optee_vectors {
+ optee_vector_isn_t std_smc_entry;
+ optee_vector_isn_t fast_smc_entry;
+ optee_vector_isn_t cpu_on_entry;
+ optee_vector_isn_t cpu_off_entry;
+ optee_vector_isn_t cpu_resume_entry;
+ optee_vector_isn_t cpu_suspend_entry;
+ optee_vector_isn_t fiq_entry;
+ optee_vector_isn_t system_off_entry;
+ optee_vector_isn_t system_reset_entry;
+} optee_vectors_t;
+
+/*
+ * The number of arguments to save during a SMC call for OPTEE.
+ * Currently only x1 and x2 are used by OPTEE.
+ */
+#define OPTEE_NUM_ARGS 0x2
+
+/* AArch64 callee saved general purpose register context structure. */
+DEFINE_REG_STRUCT(c_rt_regs, OPTEED_C_RT_CTX_ENTRIES);
+
+/*
+ * Compile time assertion to ensure that both the compiler and linker
+ * have the same double word aligned view of the size of the C runtime
+ * register context.
+ */
+CASSERT(OPTEED_C_RT_CTX_SIZE == sizeof(c_rt_regs_t), \
+ assert_spd_c_rt_regs_size_mismatch);
+
+/*******************************************************************************
+ * Structure which helps the OPTEED to maintain the per-cpu state of OPTEE.
+ * 'state' - collection of flags to track OPTEE state e.g. on/off
+ * 'mpidr' - mpidr to associate a context with a cpu
+ * 'c_rt_ctx' - stack address to restore C runtime context from after
+ * returning from a synchronous entry into OPTEE.
+ * 'cpu_ctx' - space to maintain OPTEE architectural state
+ ******************************************************************************/
+typedef struct optee_context {
+ uint32_t state;
+ uint64_t mpidr;
+ uint64_t c_rt_ctx;
+ cpu_context_t cpu_ctx;
+} optee_context_t;
+
+/* OPTEED power management handlers */
+extern const spd_pm_ops_t opteed_pm;
+
+/*******************************************************************************
+ * Forward declarations
+ ******************************************************************************/
+struct optee_vectors;
+
+/*******************************************************************************
+ * Function & Data prototypes
+ ******************************************************************************/
+uint64_t opteed_enter_sp(uint64_t *c_rt_ctx);
+void __dead2 opteed_exit_sp(uint64_t c_rt_ctx, uint64_t ret);
+uint64_t opteed_synchronous_sp_entry(optee_context_t *optee_ctx);
+void __dead2 opteed_synchronous_sp_exit(optee_context_t *optee_ctx, uint64_t ret);
+void opteed_init_optee_ep_state(struct entry_point_info *optee_ep,
+ uint32_t rw,
+ uint64_t pc,
+ optee_context_t *optee_ctx);
+
+extern optee_context_t opteed_sp_context[OPTEED_CORE_COUNT];
+extern uint32_t opteed_rw;
+extern struct optee_vectors *optee_vectors;
+#endif /*__ASSEMBLY__*/
+
+#endif /* __OPTEED_PRIVATE_H__ */
--- /dev/null
+/*
+ * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Copyright (c) 2014, Linaro Limited. All rights reserved. */
+
+#ifndef TEESMC_OPTEED_H
+#define TEESMC_OPTEED_H
+
+/*
+ * This file specify SMC function IDs used when returning from TEE to the
+ * secure monitor.
+ *
+ * All SMC Function IDs indicates SMC32 Calling Convention but will carry
+ * full 64 bit values in the argument registers if invoked from Aarch64
+ * mode. This violates the SMC Calling Convention, but since this
+ * convention only coveres API towards Normwal World it's something that
+ * only concerns the OP-TEE Dispatcher in ARM Trusted Firmware and OP-TEE
+ * OS at Secure EL1.
+ */
+
+/*
+ * Issued when returning from initial entry.
+ *
+ * Register usage:
+ * r0/x0 SMC Function ID, TEESMC_OPTEED_RETURN_ENTRY_DONE
+ * r1/x1 Pointer to entry vector
+ */
+#define TEESMC_OPTEED_FUNCID_RETURN_ENTRY_DONE 0
+#define TEESMC_OPTEED_RETURN_ENTRY_DONE \
+ TEESMC_OPTEED_RV(TEESMC_OPTEED_FUNCID_RETURN_ENTRY_DONE)
+
+
+
+/*
+ * Issued when returning from "cpu_on" vector
+ *
+ * Register usage:
+ * r0/x0 SMC Function ID, TEESMC_OPTEED_RETURN_ON_DONE
+ * r1/x1 0 on success and anything else to indicate error condition
+ */
+#define TEESMC_OPTEED_FUNCID_RETURN_ON_DONE 1
+#define TEESMC_OPTEED_RETURN_ON_DONE \
+ TEESMC_OPTEED_RV(TEESMC_OPTEED_FUNCID_RETURN_ON_DONE)
+
+/*
+ * Issued when returning from "cpu_off" vector
+ *
+ * Register usage:
+ * r0/x0 SMC Function ID, TEESMC_OPTEED_RETURN_OFF_DONE
+ * r1/x1 0 on success and anything else to indicate error condition
+ */
+#define TEESMC_OPTEED_FUNCID_RETURN_OFF_DONE 2
+#define TEESMC_OPTEED_RETURN_OFF_DONE \
+ TEESMC_OPTEED_RV(TEESMC_OPTEED_FUNCID_RETURN_OFF_DONE)
+
+/*
+ * Issued when returning from "cpu_suspend" vector
+ *
+ * Register usage:
+ * r0/x0 SMC Function ID, TEESMC_OPTEED_RETURN_SUSPEND_DONE
+ * r1/x1 0 on success and anything else to indicate error condition
+ */
+#define TEESMC_OPTEED_FUNCID_RETURN_SUSPEND_DONE 3
+#define TEESMC_OPTEED_RETURN_SUSPEND_DONE \
+ TEESMC_OPTEED_RV(TEESMC_OPTEED_FUNCID_RETURN_SUSPEND_DONE)
+
+/*
+ * Issued when returning from "cpu_resume" vector
+ *
+ * Register usage:
+ * r0/x0 SMC Function ID, TEESMC_OPTEED_RETURN_RESUME_DONE
+ * r1/x1 0 on success and anything else to indicate error condition
+ */
+#define TEESMC_OPTEED_FUNCID_RETURN_RESUME_DONE 4
+#define TEESMC_OPTEED_RETURN_RESUME_DONE \
+ TEESMC_OPTEED_RV(TEESMC_OPTEED_FUNCID_RETURN_RESUME_DONE)
+
+/*
+ * Issued when returning from "std_smc" or "fast_smc" vector
+ *
+ * Register usage:
+ * r0/x0 SMC Function ID, TEESMC_OPTEED_RETURN_CALL_DONE
+ * r1-4/x1-4 Return value 0-3 which will passed to normal world in
+ * r0-3/x0-3
+ */
+#define TEESMC_OPTEED_FUNCID_RETURN_CALL_DONE 5
+#define TEESMC_OPTEED_RETURN_CALL_DONE \
+ TEESMC_OPTEED_RV(TEESMC_OPTEED_FUNCID_RETURN_CALL_DONE)
+
+/*
+ * Issued when returning from "fiq" vector
+ *
+ * Register usage:
+ * r0/x0 SMC Function ID, TEESMC_OPTEED_RETURN_FIQ_DONE
+ */
+#define TEESMC_OPTEED_FUNCID_RETURN_FIQ_DONE 6
+#define TEESMC_OPTEED_RETURN_FIQ_DONE \
+ TEESMC_OPTEED_RV(TEESMC_OPTEED_FUNCID_RETURN_FIQ_DONE)
+
+/*
+ * Issued when returning from "system_off" vector
+ *
+ * Register usage:
+ * r0/x0 SMC Function ID, TEESMC_OPTEED_RETURN_SYSTEM_OFF_DONE
+ */
+#define TEESMC_OPTEED_FUNCID_RETURN_SYSTEM_OFF_DONE 7
+#define TEESMC_OPTEED_RETURN_SYSTEM_OFF_DONE \
+ TEESMC_OPTEED_RV(TEESMC_OPTEED_FUNCID_RETURN_SYSTEM_OFF_DONE)
+
+/*
+ * Issued when returning from "system_reset" vector
+ *
+ * Register usage:
+ * r0/x0 SMC Function ID, TEESMC_OPTEED_RETURN_SYSTEM_RESET_DONE
+ */
+#define TEESMC_OPTEED_FUNCID_RETURN_SYSTEM_RESET_DONE 8
+#define TEESMC_OPTEED_RETURN_SYSTEM_RESET_DONE \
+ TEESMC_OPTEED_RV(TEESMC_OPTEED_FUNCID_RETURN_SYSTEM_RESET_DONE)
+
+#endif /*TEESMC_OPTEED_H*/
--- /dev/null
+/*
+ * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __TEESMC_OPTEED_MACROS_H__
+#define __TEESMC_OPTEED_MACROS_H__
+
+#include <runtime_svc.h>
+
+#define TEESMC_OPTEED_RV(func_num) \
+ ((SMC_TYPE_FAST << FUNCID_TYPE_SHIFT) | \
+ ((SMC_32) << FUNCID_CC_SHIFT) | \
+ (62 << FUNCID_OEN_SHIFT) | \
+ ((func_num) & FUNCID_NUM_MASK))
+
+#endif /*__TEESMC_OPTEED_MACROS_H__*/
projects / project / bcm63xx / atf.git / commitdiff