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Dan Handleyb226a4d2014-05-16 14:08:45 +01001/*
Soby Mathew73308d02018-01-09 14:36:14 +00002 * Copyright (c) 2014-2018, 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
7#include <arch_helpers.h>
Soby Mathew70716d62015-07-13 16:26:11 +01008#include <assert.h>
Soby Mathew1ff495b2015-12-09 11:28:43 +00009#include <console.h>
Soby Mathew70716d62015-07-13 16:26:11 +010010#include <platform.h>
Jeenu Viswambharan2e2e8812017-12-08 15:38:21 +000011#if RAS_EXTENSION
12#include <ras.h>
13#endif
Antonio Nino Diaz4ef91f12017-02-20 14:22:22 +000014#include <xlat_mmu_helpers.h>
Dan Handleyb226a4d2014-05-16 14:08:45 +010015
16/*
Soby Mathew1ff495b2015-12-09 11:28:43 +000017 * The following platform setup functions are weakly defined. They
Dan Handleyb226a4d2014-05-16 14:08:45 +010018 * provide typical implementations that may be re-used by multiple
19 * platforms but may also be overridden by a platform if required.
20 */
21#pragma weak bl31_plat_enable_mmu
22#pragma weak bl32_plat_enable_mmu
Soby Mathew1ff495b2015-12-09 11:28:43 +000023#pragma weak bl31_plat_runtime_setup
Antonio Nino Diaz391a76e2016-05-18 16:53:31 +010024#if !ERROR_DEPRECATED
25#pragma weak plat_get_syscnt_freq2
Soby Mathew73308d02018-01-09 14:36:14 +000026#pragma weak bl31_early_platform_setup2
Antonio Nino Diaz391a76e2016-05-18 16:53:31 +010027#endif /* ERROR_DEPRECATED */
Dan Handleyb226a4d2014-05-16 14:08:45 +010028
Jeenu Viswambharan04e3a7f2017-10-16 08:43:14 +010029#if SDEI_SUPPORT
30#pragma weak plat_sdei_handle_masked_trigger
31#pragma weak plat_sdei_validate_entry_point
32#endif
33
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +000034#pragma weak plat_ea_handler
35
Achin Guptae9982542014-06-26 08:59:07 +010036void bl31_plat_enable_mmu(uint32_t flags)
Dan Handleyb226a4d2014-05-16 14:08:45 +010037{
Achin Guptae9982542014-06-26 08:59:07 +010038 enable_mmu_el3(flags);
Dan Handleyb226a4d2014-05-16 14:08:45 +010039}
40
Achin Guptae9982542014-06-26 08:59:07 +010041void bl32_plat_enable_mmu(uint32_t flags)
Dan Handleyb226a4d2014-05-16 14:08:45 +010042{
Achin Guptae9982542014-06-26 08:59:07 +010043 enable_mmu_el1(flags);
Dan Handleyb226a4d2014-05-16 14:08:45 +010044}
Soby Mathew70716d62015-07-13 16:26:11 +010045
Soby Mathew1ff495b2015-12-09 11:28:43 +000046void bl31_plat_runtime_setup(void)
47{
Julius Werner94f89072017-07-31 18:15:11 -070048#if MULTI_CONSOLE_API
49 console_switch_state(CONSOLE_FLAG_RUNTIME);
50#else
Soby Mathew1ff495b2015-12-09 11:28:43 +000051 console_uninit();
Julius Werner94f89072017-07-31 18:15:11 -070052#endif
Soby Mathew1ff495b2015-12-09 11:28:43 +000053}
54
Soby Mathew70716d62015-07-13 16:26:11 +010055#if !ENABLE_PLAT_COMPAT
56/*
57 * Helper function for platform_get_pos() when platform compatibility is
58 * disabled. This is to enable SPDs using the older platform API to continue
59 * to work.
60 */
61unsigned int platform_core_pos_helper(unsigned long mpidr)
62{
63 int idx = plat_core_pos_by_mpidr(mpidr);
64 assert(idx >= 0);
65 return idx;
66}
67#endif
68
Antonio Nino Diaz391a76e2016-05-18 16:53:31 +010069
70#if !ERROR_DEPRECATED
71unsigned int plat_get_syscnt_freq2(void)
72{
Dan Handley807d7272018-02-27 13:00:43 +000073 WARN("plat_get_syscnt_freq() is deprecated\n");
74 WARN("Please define plat_get_syscnt_freq2()\n");
75 /*
76 * Suppress deprecated declaration warning in compatibility function
77 */
78#pragma GCC diagnostic push
79#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
Antonio Nino Diaz391a76e2016-05-18 16:53:31 +010080 unsigned long long freq = plat_get_syscnt_freq();
Dan Handley807d7272018-02-27 13:00:43 +000081#pragma GCC diagnostic pop
Antonio Nino Diaz391a76e2016-05-18 16:53:31 +010082
83 assert(freq >> 32 == 0);
84
85 return (unsigned int)freq;
86}
Soby Mathew73308d02018-01-09 14:36:14 +000087
88void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
89 u_register_t arg2, u_register_t arg3)
90{
91 bl31_early_platform_setup((void *) arg0, (void *)arg1);
92}
Antonio Nino Diaz391a76e2016-05-18 16:53:31 +010093#endif /* ERROR_DEPRECATED */
Jeenu Viswambharan04e3a7f2017-10-16 08:43:14 +010094
95#if SDEI_SUPPORT
96/*
97 * Function that handles spurious SDEI interrupts while events are masked.
98 */
99void plat_sdei_handle_masked_trigger(uint64_t mpidr, unsigned int intr)
100{
Masahiro Yamadae93a0f42018-02-02 15:09:36 +0900101 WARN("Spurious SDEI interrupt %u on masked PE %llx\n", intr, mpidr);
Jeenu Viswambharan04e3a7f2017-10-16 08:43:14 +0100102}
103
104/*
105 * Default Function to validate SDEI entry point, which returns success.
106 * Platforms may override this with their own validation mechanism.
107 */
108int plat_sdei_validate_entry_point(uintptr_t ep, unsigned int client_mode)
109{
110 return 0;
111}
112#endif
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +0000113
114/* RAS functions common to AArch64 ARM platforms */
115void plat_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie,
116 void *handle, uint64_t flags)
117{
Jeenu Viswambharan2e2e8812017-12-08 15:38:21 +0000118#if RAS_EXTENSION
119 /* Call RAS EA handler */
120 int handled = ras_ea_handler(ea_reason, syndrome, cookie, handle, flags);
121 if (handled != 0)
122 return;
123#endif
124
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +0000125 ERROR("Unhandled External Abort received on 0x%lx at EL3!\n",
126 read_mpidr_el1());
Jeenu Viswambharan4b00cb72018-05-15 16:18:40 +0100127 ERROR(" exception reason=%u syndrome=0x%llx\n", ea_reason, syndrome);
Jeenu Viswambharan96c7df02017-11-30 12:54:15 +0000128 panic();
129}