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Diffstat (limited to 'bl31/aarch64/exception_handlers.c')
| -rw-r--r-- | bl31/aarch64/exception_handlers.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/bl31/aarch64/exception_handlers.c b/bl31/aarch64/exception_handlers.c deleted file mode 100644 index 3151294c..00000000 --- a/bl31/aarch64/exception_handlers.c +++ /dev/null @@ -1,184 +0,0 @@ -/* - * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * Neither the name of ARM nor the names of its contributors may be used - * to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include <arch_helpers.h> -#include <platform.h> -#include <bl_common.h> -#include <bl31.h> -#include <psci.h> -#include <assert.h> -#include <runtime_svc.h> - -/******************************************************************************* - * This function checks whether this is a valid smc e.g. - * the function id is correct, top word of args are zeroed - * when aarch64 makes an aarch32 call etc. - ******************************************************************************/ -int validate_smc(gp_regs *regs) -{ - unsigned int rw = GET_RW(regs->spsr); - unsigned int cc = GET_SMC_CC(regs->x0); - - /* Check if there is a difference in the caller RW and SMC CC */ - if (rw == cc) { - - /* Check whether the caller has chosen the right func. id */ - if (cc == SMC_64) { - regs->x0 = SMC_UNK; - return SMC_UNK; - } - - /* - * Paranoid check to zero the top word of passed args - * irrespective of caller's register width. - * - * TODO: Check if this needed if the caller is aarch32 - */ - regs->x0 &= (unsigned int) 0xFFFFFFFF; - regs->x1 &= (unsigned int) 0xFFFFFFFF; - regs->x2 &= (unsigned int) 0xFFFFFFFF; - regs->x3 &= (unsigned int) 0xFFFFFFFF; - regs->x4 &= (unsigned int) 0xFFFFFFFF; - regs->x5 &= (unsigned int) 0xFFFFFFFF; - regs->x6 &= (unsigned int) 0xFFFFFFFF; - } - - return 0; -} - -/* TODO: Break down the SMC handler into fast and standard SMC handlers. */ -void smc_handler(unsigned type, unsigned long esr, gp_regs *regs) -{ - /* Check if the SMC has been correctly called */ - if (validate_smc(regs) != 0) - return; - - switch (regs->x0) { - case PSCI_VERSION: - regs->x0 = psci_version(); - break; - - case PSCI_CPU_OFF: - regs->x0 = __psci_cpu_off(); - break; - - case PSCI_CPU_SUSPEND_AARCH64: - case PSCI_CPU_SUSPEND_AARCH32: - regs->x0 = __psci_cpu_suspend(regs->x1, regs->x2, regs->x3); - break; - - case PSCI_CPU_ON_AARCH64: - case PSCI_CPU_ON_AARCH32: - regs->x0 = psci_cpu_on(regs->x1, regs->x2, regs->x3); - break; - - case PSCI_AFFINITY_INFO_AARCH32: - case PSCI_AFFINITY_INFO_AARCH64: - regs->x0 = psci_affinity_info(regs->x1, regs->x2); - break; - - default: - regs->x0 = SMC_UNK; - } - - return; -} - -void irq_handler(unsigned type, unsigned long esr, gp_regs *regs) -{ - plat_report_exception(type); - assert(0); -} - -void fiq_handler(unsigned type, unsigned long esr, gp_regs *regs) -{ - plat_report_exception(type); - assert(0); -} - -void serror_handler(unsigned type, unsigned long esr, gp_regs *regs) -{ - plat_report_exception(type); - assert(0); -} - -void sync_exception_handler(unsigned type, gp_regs *regs) -{ - unsigned long esr = read_esr(); - unsigned int ec = EC_BITS(esr); - - switch (ec) { - - case EC_AARCH32_SMC: - case EC_AARCH64_SMC: - smc_handler(type, esr, regs); - break; - - default: - plat_report_exception(type); - assert(0); - } - return; -} - -void async_exception_handler(unsigned type, gp_regs *regs) -{ - unsigned long esr = read_esr(); - - switch (type) { - - case IRQ_SP_EL0: - case IRQ_SP_ELX: - case IRQ_AARCH64: - case IRQ_AARCH32: - irq_handler(type, esr, regs); - break; - - case FIQ_SP_EL0: - case FIQ_SP_ELX: - case FIQ_AARCH64: - case FIQ_AARCH32: - fiq_handler(type, esr, regs); - break; - - case SERROR_SP_EL0: - case SERROR_SP_ELX: - case SERROR_AARCH64: - case SERROR_AARCH32: - serror_handler(type, esr, regs); - break; - - default: - plat_report_exception(type); - assert(0); - } - - return; -} |