diff options
Diffstat (limited to 'bl31/runtime_svc.c')
| -rw-r--r-- | bl31/runtime_svc.c | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/bl31/runtime_svc.c b/bl31/runtime_svc.c deleted file mode 100644 index 8729e2920..000000000 --- a/bl31/runtime_svc.c +++ /dev/null @@ -1,149 +0,0 @@ -/* - * Copyright (c) 2013-2016, 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 <assert.h> -#include <debug.h> -#include <errno.h> -#include <runtime_svc.h> -#include <string.h> - -/******************************************************************************* - * The 'rt_svc_descs' array holds the runtime service descriptors exported by - * services by placing them in the 'rt_svc_descs' linker section. - * The 'rt_svc_descs_indices' array holds the index of a descriptor in the - * 'rt_svc_descs' array. When an SMC arrives, the OEN[29:24] bits and the call - * type[31] bit in the function id are combined to get an index into the - * 'rt_svc_descs_indices' array. This gives the index of the descriptor in the - * 'rt_svc_descs' array which contains the SMC handler. - ******************************************************************************/ -#define RT_SVC_DESCS_START ((uintptr_t) (&__RT_SVC_DESCS_START__)) -#define RT_SVC_DESCS_END ((uintptr_t) (&__RT_SVC_DESCS_END__)) -uint8_t rt_svc_descs_indices[MAX_RT_SVCS]; -static rt_svc_desc_t *rt_svc_descs; - -#define RT_SVC_DECS_NUM ((RT_SVC_DESCS_END - RT_SVC_DESCS_START)\ - / sizeof(rt_svc_desc_t)) - -/******************************************************************************* - * Simple routine to sanity check a runtime service descriptor before using it - ******************************************************************************/ -static int32_t validate_rt_svc_desc(rt_svc_desc_t *desc) -{ - if (desc == NULL) - return -EINVAL; - - if (desc->start_oen > desc->end_oen) - return -EINVAL; - - if (desc->end_oen >= OEN_LIMIT) - return -EINVAL; - - if (desc->call_type != SMC_TYPE_FAST && desc->call_type != SMC_TYPE_STD) - return -EINVAL; - - /* A runtime service having no init or handle function doesn't make sense */ - if (desc->init == NULL && desc->handle == NULL) - return -EINVAL; - - return 0; -} - -/******************************************************************************* - * This function calls the initialisation routine in the descriptor exported by - * a runtime service. Once a descriptor has been validated, its start & end - * owning entity numbers and the call type are combined to form a unique oen. - * The unique oen is used as an index into the 'rt_svc_descs_indices' array. - * The index of the runtime service descriptor is stored at this index. - ******************************************************************************/ -void runtime_svc_init(void) -{ - int rc = 0, index, start_idx, end_idx; - - /* Assert the number of descriptors detected are less than maximum indices */ - assert((RT_SVC_DECS_NUM >= 0) && (RT_SVC_DECS_NUM < MAX_RT_SVCS)); - - /* If no runtime services are implemented then simply bail out */ - if (RT_SVC_DECS_NUM == 0) - return; - - /* Initialise internal variables to invalid state */ - memset(rt_svc_descs_indices, -1, sizeof(rt_svc_descs_indices)); - - rt_svc_descs = (rt_svc_desc_t *) RT_SVC_DESCS_START; - for (index = 0; index < RT_SVC_DECS_NUM; index++) { - - /* - * An invalid descriptor is an error condition since it is - * difficult to predict the system behaviour in the absence - * of this service. - */ - rc = validate_rt_svc_desc(&rt_svc_descs[index]); - if (rc) { - ERROR("Invalid runtime service descriptor %p (%s)\n", - (void *) &rt_svc_descs[index], - rt_svc_descs[index].name); - goto error; - } - - /* - * The runtime service may have separate rt_svc_desc_t - * for its fast smc and standard smc. Since the service itself - * need to be initialized only once, only one of them will have - * an initialisation routine defined. Call the initialisation - * routine for this runtime service, if it is defined. - */ - if (rt_svc_descs[index].init) { - rc = rt_svc_descs[index].init(); - if (rc) { - ERROR("Error initializing runtime service %s\n", - rt_svc_descs[index].name); - continue; - } - } - - /* - * Fill the indices corresponding to the start and end - * owning entity numbers with the index of the - * descriptor which will handle the SMCs for this owning - * entity range. - */ - start_idx = get_unique_oen(rt_svc_descs[index].start_oen, - rt_svc_descs[index].call_type); - end_idx = get_unique_oen(rt_svc_descs[index].end_oen, - rt_svc_descs[index].call_type); - - for (; start_idx <= end_idx; start_idx++) - rt_svc_descs_indices[start_idx] = index; - } - - return; -error: - panic(); -} |