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https://github.com/ARM-software/arm-trusted-firmware.git
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64ee263e20
Having an active stack while enabling MMU has shown coherency problems. This patch builds on top of translation library changes that introduces MMU-enabling without using stacks. Previously, with HW_ASSISTED_COHERENCY, data caches were disabled while enabling MMU only because of active stack. Now that we can enable MMU without using stack, we can enable both MMU and data caches at the same time. NOTE: Since this feature depends on using translation table library v2, disallow using translation table library v1 with HW_ASSISTED_COHERENCY. Fixes ARM-software/tf-issues#566 Change-Id: Ie55aba0c23ee9c5109eb3454cb8fa45d74f8bbb2 Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
/*
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* Copyright (c) 2014-2018, 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 <arch_helpers.h>
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#include <assert.h>
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#include <console.h>
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#include <platform.h>
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#if RAS_EXTENSION
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#include <ras.h>
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#endif
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#include <xlat_mmu_helpers.h>
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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 !ERROR_DEPRECATED
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#pragma weak plat_get_syscnt_freq2
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#pragma weak bl31_early_platform_setup2
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#endif /* ERROR_DEPRECATED */
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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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#pragma weak plat_ea_handler
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void bl31_plat_runtime_setup(void)
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{
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#if MULTI_CONSOLE_API
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console_switch_state(CONSOLE_FLAG_RUNTIME);
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#else
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console_uninit();
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#endif
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}
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#if !ENABLE_PLAT_COMPAT
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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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#endif
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#if !ERROR_DEPRECATED
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unsigned int plat_get_syscnt_freq2(void)
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{
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WARN("plat_get_syscnt_freq() is deprecated\n");
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WARN("Please define plat_get_syscnt_freq2()\n");
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/*
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* Suppress deprecated declaration warning in compatibility function
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*/
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
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unsigned long long freq = plat_get_syscnt_freq();
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#pragma GCC diagnostic pop
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assert(freq >> 32 == 0);
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return (unsigned int)freq;
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}
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void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
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u_register_t arg2, u_register_t arg3)
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{
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bl31_early_platform_setup((void *) arg0, (void *)arg1);
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}
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#endif /* ERROR_DEPRECATED */
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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 %llx\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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/* RAS functions common to AArch64 ARM platforms */
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void plat_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 RAS_EXTENSION
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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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ERROR("Unhandled External Abort received on 0x%lx at EL3!\n",
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read_mpidr_el1());
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ERROR(" exception reason=%u syndrome=0x%llx\n", ea_reason, syndrome);
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panic();
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}
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