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Dan Handleyb226a4d2014-05-16 14:08:45 +01001/*
Govindraj Rajaabf9fb92023-01-16 15:11:47 +00002 * Copyright (c) 2014-2023, 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 Pandeyd419e222023-02-13 12:39:17 +000014#if RAS_FFH_SUPPORT
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
Pali Rohárc36e97f2021-06-21 17:22:27 +020032#pragma weak plat_ea_handler = plat_default_ea_handler
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +000033
Soby Mathew1ff495b2015-12-09 11:28:43 +000034void bl31_plat_runtime_setup(void)
35{
Julius Werner94f89072017-07-31 18:15:11 -070036 console_switch_state(CONSOLE_FLAG_RUNTIME);
Soby Mathew1ff495b2015-12-09 11:28:43 +000037}
38
Soby Mathew70716d62015-07-13 16:26:11 +010039/*
40 * Helper function for platform_get_pos() when platform compatibility is
41 * disabled. This is to enable SPDs using the older platform API to continue
42 * to work.
43 */
44unsigned int platform_core_pos_helper(unsigned long mpidr)
45{
46 int idx = plat_core_pos_by_mpidr(mpidr);
47 assert(idx >= 0);
48 return idx;
49}
Antonio Nino Diaz391a76e2016-05-18 16:53:31 +010050
Jeenu Viswambharan04e3a7f2017-10-16 08:43:14 +010051#if SDEI_SUPPORT
52/*
53 * Function that handles spurious SDEI interrupts while events are masked.
54 */
55void plat_sdei_handle_masked_trigger(uint64_t mpidr, unsigned int intr)
56{
Scott Brandene5dcf982020-08-25 13:49:32 -070057 WARN("Spurious SDEI interrupt %u on masked PE %" PRIx64 "\n", intr, mpidr);
Jeenu Viswambharan04e3a7f2017-10-16 08:43:14 +010058}
59
60/*
61 * Default Function to validate SDEI entry point, which returns success.
62 * Platforms may override this with their own validation mechanism.
63 */
64int plat_sdei_validate_entry_point(uintptr_t ep, unsigned int client_mode)
65{
66 return 0;
67}
68#endif
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +000069
Manish Pandey2ff5dc32022-11-01 16:16:55 +000070const char *get_el_str(unsigned int el)
Alexei Fedorov813c9f92020-03-03 13:31:58 +000071{
72 if (el == MODE_EL3) {
73 return "EL3";
74 } else if (el == MODE_EL2) {
75 return "EL2";
76 }
Manish Pandey2ff5dc32022-11-01 16:16:55 +000077 return "EL1";
Alexei Fedorov813c9f92020-03-03 13:31:58 +000078}
Alexei Fedorov813c9f92020-03-03 13:31:58 +000079
Govindraj Raja67b57622022-12-01 16:47:28 +000080/* Handler for External Aborts from lower EL including RAS errors */
Pali Rohárc36e97f2021-06-21 17:22:27 +020081void plat_default_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie,
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +000082 void *handle, uint64_t flags)
83{
Manish Pandeyd419e222023-02-13 12:39:17 +000084#if RAS_FFH_SUPPORT
Jeenu Viswambharan2e2e8812017-12-08 15:38:21 +000085 /* Call RAS EA handler */
86 int handled = ras_ea_handler(ea_reason, syndrome, cookie, handle, flags);
87 if (handled != 0)
88 return;
89#endif
Alexei Fedorov813c9f92020-03-03 13:31:58 +000090 unsigned int level = (unsigned int)GET_EL(read_spsr_el3());
Jeenu Viswambharan2e2e8812017-12-08 15:38:21 +000091
Pali Rohár152682c2021-06-22 20:23:38 +020092 ERROR_NL();
Alexei Fedorov813c9f92020-03-03 13:31:58 +000093 ERROR("Unhandled External Abort received on 0x%lx from %s\n",
94 read_mpidr_el1(), get_el_str(level));
Scott Brandene5dcf982020-08-25 13:49:32 -070095 ERROR("exception reason=%u syndrome=0x%" PRIx64 "\n", ea_reason, syndrome);
Govindraj Raja67b57622022-12-01 16:47:28 +000096
Govindraj Rajaabf9fb92023-01-16 15:11:47 +000097 /* We reached here due to a panic from a lower EL and assuming this is the default
98 * platform registered handler that we could call on a lower EL panic.
99 */
100 lower_el_panic();
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +0000101}