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/*
* Copyright (c) 2014-2023, Arm Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <inttypes.h>
#include <stdint.h>
#include <arch_helpers.h>
#include <common/debug.h>
#include <drivers/console.h>
#if RAS_FFH_SUPPORT
#include <lib/extensions/ras.h>
#endif
#include <lib/xlat_tables/xlat_mmu_helpers.h>
#include <plat/common/platform.h>
/*
* The following platform setup functions are weakly defined. They
* provide typical implementations that may be re-used by multiple
* platforms but may also be overridden by a platform if required.
*/
#pragma weak bl31_plat_runtime_setup
#if SDEI_SUPPORT
#pragma weak plat_sdei_handle_masked_trigger
#pragma weak plat_sdei_validate_entry_point
#endif
#pragma weak plat_ea_handler = plat_default_ea_handler
void bl31_plat_runtime_setup(void)
{
console_switch_state(CONSOLE_FLAG_RUNTIME);
}
/*
* Helper function for platform_get_pos() when platform compatibility is
* disabled. This is to enable SPDs using the older platform API to continue
* to work.
*/
unsigned int platform_core_pos_helper(unsigned long mpidr)
{
int idx = plat_core_pos_by_mpidr(mpidr);
assert(idx >= 0);
return idx;
}
#if SDEI_SUPPORT
/*
* Function that handles spurious SDEI interrupts while events are masked.
*/
void plat_sdei_handle_masked_trigger(uint64_t mpidr, unsigned int intr)
{
WARN("Spurious SDEI interrupt %u on masked PE %" PRIx64 "\n", intr, mpidr);
}
/*
* Default Function to validate SDEI entry point, which returns success.
* Platforms may override this with their own validation mechanism.
*/
int plat_sdei_validate_entry_point(uintptr_t ep, unsigned int client_mode)
{
return 0;
}
#endif
const char *get_el_str(unsigned int el)
{
if (el == MODE_EL3) {
return "EL3";
} else if (el == MODE_EL2) {
return "EL2";
}
return "EL1";
}
/* Handler for External Aborts from lower EL including RAS errors */
void plat_default_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie,
void *handle, uint64_t flags)
{
#if RAS_FFH_SUPPORT
/* Call RAS EA handler */
int handled = ras_ea_handler(ea_reason, syndrome, cookie, handle, flags);
if (handled != 0)
return;
#endif
unsigned int level = (unsigned int)GET_EL(read_spsr_el3());
ERROR_NL();
ERROR("Unhandled External Abort received on 0x%lx from %s\n",
read_mpidr_el1(), get_el_str(level));
ERROR("exception reason=%u syndrome=0x%" PRIx64 "\n", ea_reason, syndrome);
/* We reached here due to a panic from a lower EL and assuming this is the default
* platform registered handler that we could call on a lower EL panic.
*/
lower_el_panic();
}
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