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a03dafe516
In case of load error, platform may need to try another instance, either from another storage, or from the same storage in case of PSA FWU. On MTD devices such as NAND, it is required to define backup partitions. A new function plat_setup_try_img_ops() should be called by platform code to register handlers (plat_try_images_ops) to manage loading other images. Signed-off-by: Yann Gautier <yann.gautier@st.com> Signed-off-by: Lionel Debieve <lionel.debieve@foss.st.com> Change-Id: Ideaecaf296c0037a26fb4e6680f33e507111378a
119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/*
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* Copyright (c) 2014-2024, Arm Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <inttypes.h>
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#include <stdint.h>
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#include <arch_helpers.h>
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#include <common/debug.h>
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#include <drivers/console.h>
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#if ENABLE_FEAT_RAS
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#include <lib/extensions/ras.h>
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#endif
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#include <lib/xlat_tables/xlat_mmu_helpers.h>
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#include <plat/common/platform.h>
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/* Pointer and function to register platform function to load alernate images */
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const struct plat_try_images_ops *plat_try_img_ops;
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void plat_setup_try_img_ops(const struct plat_try_images_ops *plat_try_ops)
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{
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plat_try_img_ops = plat_try_ops;
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}
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/*
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* The following platform setup functions are weakly defined. They
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* provide typical implementations that may be re-used by multiple
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* platforms but may also be overridden by a platform if required.
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*/
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#pragma weak bl31_plat_runtime_setup
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#if SDEI_SUPPORT
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#pragma weak plat_sdei_handle_masked_trigger
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#pragma weak plat_sdei_validate_entry_point
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#endif
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#if FFH_SUPPORT
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#pragma weak plat_ea_handler = plat_default_ea_handler
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#endif
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void bl31_plat_runtime_setup(void)
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{
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}
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/*
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* Helper function for platform_get_pos() when platform compatibility is
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* disabled. This is to enable SPDs using the older platform API to continue
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* to work.
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*/
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unsigned int platform_core_pos_helper(unsigned long mpidr)
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{
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int idx = plat_core_pos_by_mpidr(mpidr);
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assert(idx >= 0);
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return idx;
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}
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#if SDEI_SUPPORT
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/*
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* Function that handles spurious SDEI interrupts while events are masked.
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*/
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void plat_sdei_handle_masked_trigger(uint64_t mpidr, unsigned int intr)
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{
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WARN("Spurious SDEI interrupt %u on masked PE %" PRIx64 "\n", intr, mpidr);
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}
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/*
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* Default Function to validate SDEI entry point, which returns success.
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* Platforms may override this with their own validation mechanism.
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*/
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int plat_sdei_validate_entry_point(uintptr_t ep, unsigned int client_mode)
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{
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return 0;
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}
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#endif
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const char *get_el_str(unsigned int el)
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{
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switch (el) {
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case MODE_EL3:
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return "EL3";
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case MODE_EL2:
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return "EL2";
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case MODE_EL1:
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return "EL1";
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case MODE_EL0:
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return "EL0";
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default:
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assert(false);
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return NULL;
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}
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}
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#if FFH_SUPPORT
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/* Handler for External Aborts from lower EL including RAS errors */
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void plat_default_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie,
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void *handle, uint64_t flags)
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{
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#if ENABLE_FEAT_RAS
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/* Call RAS EA handler */
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int handled = ras_ea_handler(ea_reason, syndrome, cookie, handle, flags);
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if (handled != 0)
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return;
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#endif
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unsigned int level = (unsigned int)GET_EL(read_spsr_el3());
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ERROR_NL();
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ERROR("Unhandled External Abort received on 0x%lx from %s\n",
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read_mpidr_el1(), get_el_str(level));
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ERROR("exception reason=%u syndrome=0x%" PRIx64 "\n", ea_reason, syndrome);
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/* We reached here due to a panic from a lower EL and assuming this is the default
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* platform registered handler that we could call on a lower EL panic.
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*/
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lower_el_panic();
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}
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#endif
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