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Dan Handleyb226a4d2014-05-16 14:08:45 +01001/*
Salman Nabifed5e292024-02-28 13:37:06 +00002 * Copyright (c) 2014-2024, Arm Limited and Contributors. All rights reserved.
Dan Handleyb226a4d2014-05-16 14:08:45 +01003 *
dp-armfa3cf0b2017-05-03 09:38:09 +01004 * SPDX-License-Identifier: BSD-3-Clause
Dan Handleyb226a4d2014-05-16 14:08:45 +01005 */
Jeenu Viswambharan04e3a7f2017-10-16 08:43:14 +01006
Soby Mathew70716d62015-07-13 16:26:11 +01007#include <assert.h>
Scott Brandene5dcf982020-08-25 13:49:32 -07008#include <inttypes.h>
9#include <stdint.h>
Antonio Nino Diaze0f90632018-12-14 00:18:21 +000010
11#include <arch_helpers.h>
Claus Pedersen785e66c2022-09-12 22:42:58 +000012#include <common/debug.h>
Antonio Nino Diaze0f90632018-12-14 00:18:21 +000013#include <drivers/console.h>
Manish Pandeyf90a73c2023-10-10 15:42:19 +010014#if ENABLE_FEAT_RAS
Antonio Nino Diaze0f90632018-12-14 00:18:21 +000015#include <lib/extensions/ras.h>
Jeenu Viswambharan2e2e8812017-12-08 15:38:21 +000016#endif
Antonio Nino Diaze0f90632018-12-14 00:18:21 +000017#include <lib/xlat_tables/xlat_mmu_helpers.h>
18#include <plat/common/platform.h>
Dan Handleyb226a4d2014-05-16 14:08:45 +010019
20/*
Soby Mathew1ff495b2015-12-09 11:28:43 +000021 * The following platform setup functions are weakly defined. They
Dan Handleyb226a4d2014-05-16 14:08:45 +010022 * provide typical implementations that may be re-used by multiple
23 * platforms but may also be overridden by a platform if required.
24 */
Soby Mathew1ff495b2015-12-09 11:28:43 +000025#pragma weak bl31_plat_runtime_setup
Dan Handleyb226a4d2014-05-16 14:08:45 +010026
Jeenu Viswambharan04e3a7f2017-10-16 08:43:14 +010027#if SDEI_SUPPORT
28#pragma weak plat_sdei_handle_masked_trigger
29#pragma weak plat_sdei_validate_entry_point
30#endif
31
Manish Pandeyf90a73c2023-10-10 15:42:19 +010032#if FFH_SUPPORT
Pali Rohárc36e97f2021-06-21 17:22:27 +020033#pragma weak plat_ea_handler = plat_default_ea_handler
Manish Pandeyf90a73c2023-10-10 15:42:19 +010034#endif
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +000035
Soby Mathew1ff495b2015-12-09 11:28:43 +000036void bl31_plat_runtime_setup(void)
37{
Salman Nabifed5e292024-02-28 13:37:06 +000038 console_flush();
Julius Werner94f89072017-07-31 18:15:11 -070039 console_switch_state(CONSOLE_FLAG_RUNTIME);
Soby Mathew1ff495b2015-12-09 11:28:43 +000040}
41
Soby Mathew70716d62015-07-13 16:26:11 +010042/*
43 * Helper function for platform_get_pos() when platform compatibility is
44 * disabled. This is to enable SPDs using the older platform API to continue
45 * to work.
46 */
47unsigned int platform_core_pos_helper(unsigned long mpidr)
48{
49 int idx = plat_core_pos_by_mpidr(mpidr);
50 assert(idx >= 0);
51 return idx;
52}
Antonio Nino Diaz391a76e2016-05-18 16:53:31 +010053
Jeenu Viswambharan04e3a7f2017-10-16 08:43:14 +010054#if SDEI_SUPPORT
55/*
56 * Function that handles spurious SDEI interrupts while events are masked.
57 */
58void plat_sdei_handle_masked_trigger(uint64_t mpidr, unsigned int intr)
59{
Scott Brandene5dcf982020-08-25 13:49:32 -070060 WARN("Spurious SDEI interrupt %u on masked PE %" PRIx64 "\n", intr, mpidr);
Jeenu Viswambharan04e3a7f2017-10-16 08:43:14 +010061}
62
63/*
64 * Default Function to validate SDEI entry point, which returns success.
65 * Platforms may override this with their own validation mechanism.
66 */
67int plat_sdei_validate_entry_point(uintptr_t ep, unsigned int client_mode)
68{
69 return 0;
70}
71#endif
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +000072
Manish Pandey2ff5dc32022-11-01 16:16:55 +000073const char *get_el_str(unsigned int el)
Alexei Fedorov813c9f92020-03-03 13:31:58 +000074{
Arvind Ram Prakash29670e62024-03-04 16:33:27 -060075 switch (el) {
76 case MODE_EL3:
Alexei Fedorov813c9f92020-03-03 13:31:58 +000077 return "EL3";
Arvind Ram Prakash29670e62024-03-04 16:33:27 -060078 case MODE_EL2:
Alexei Fedorov813c9f92020-03-03 13:31:58 +000079 return "EL2";
Arvind Ram Prakash29670e62024-03-04 16:33:27 -060080 case MODE_EL1:
81 return "EL1";
82 case MODE_EL0:
83 return "EL0";
84 default:
85 assert(false);
86 return NULL;
Alexei Fedorov813c9f92020-03-03 13:31:58 +000087 }
Alexei Fedorov813c9f92020-03-03 13:31:58 +000088}
Alexei Fedorov813c9f92020-03-03 13:31:58 +000089
Manish Pandeyf90a73c2023-10-10 15:42:19 +010090#if FFH_SUPPORT
Govindraj Raja67b57622022-12-01 16:47:28 +000091/* Handler for External Aborts from lower EL including RAS errors */
Pali Rohárc36e97f2021-06-21 17:22:27 +020092void plat_default_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie,
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +000093 void *handle, uint64_t flags)
94{
Manish Pandeyf90a73c2023-10-10 15:42:19 +010095#if ENABLE_FEAT_RAS
Jeenu Viswambharan2e2e8812017-12-08 15:38:21 +000096 /* Call RAS EA handler */
97 int handled = ras_ea_handler(ea_reason, syndrome, cookie, handle, flags);
98 if (handled != 0)
99 return;
100#endif
Alexei Fedorov813c9f92020-03-03 13:31:58 +0000101 unsigned int level = (unsigned int)GET_EL(read_spsr_el3());
Jeenu Viswambharan2e2e8812017-12-08 15:38:21 +0000102
Pali Rohár152682c2021-06-22 20:23:38 +0200103 ERROR_NL();
Alexei Fedorov813c9f92020-03-03 13:31:58 +0000104 ERROR("Unhandled External Abort received on 0x%lx from %s\n",
105 read_mpidr_el1(), get_el_str(level));
Scott Brandene5dcf982020-08-25 13:49:32 -0700106 ERROR("exception reason=%u syndrome=0x%" PRIx64 "\n", ea_reason, syndrome);
Govindraj Raja67b57622022-12-01 16:47:28 +0000107
Govindraj Rajaabf9fb92023-01-16 15:11:47 +0000108 /* We reached here due to a panic from a lower EL and assuming this is the default
109 * platform registered handler that we could call on a lower EL panic.
110 */
111 lower_el_panic();
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +0000112}
Manish Pandeyf90a73c2023-10-10 15:42:19 +0100113#endif