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1fe4a9d181
Implements the loop workaround for Cortex-A77, Cortex-A78, Cortex-A710, Cortex-X2, Neoverse N1, Neoverse N2 and Neoverse V1 CPUs. Signed-off-by: Bipin Ravi <bipin.ravi@arm.com> Change-Id: I11d342df7a2068a15e18f4974c645af3b341235b
50 lines
2.1 KiB
C
50 lines
2.1 KiB
C
/*
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* Copyright (c) 2021-2022, Arm Limited. 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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#ifndef CORTEX_X2_H
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#define CORTEX_X2_H
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#define CORTEX_X2_MIDR U(0x410FD480)
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/* Cortex-X2 loop count for CVE-2022-23960 mitigation */
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#define CORTEX_X2_BHB_LOOP_COUNT U(32)
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/*******************************************************************************
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* CPU Extended Control register specific definitions
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******************************************************************************/
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#define CORTEX_X2_CPUECTLR_EL1 S3_0_C15_C1_4
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#define CORTEX_X2_CPUECTLR_EL1_PFSTIDIS_BIT (ULL(1) << 8)
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/*******************************************************************************
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* CPU Extended Control register 2 specific definitions
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******************************************************************************/
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#define CORTEX_X2_CPUECTLR2_EL1 S3_0_C15_C1_5
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#define CORTEX_X2_CPUECTLR2_EL1_PF_MODE_SHIFT U(11)
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#define CORTEX_X2_CPUECTLR2_EL1_PF_MODE_WIDTH U(4)
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#define CORTEX_X2_CPUECTLR2_EL1_PF_MODE_CNSRV ULL(0x9)
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/*******************************************************************************
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* CPU Power Control register specific definitions
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******************************************************************************/
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#define CORTEX_X2_CPUPWRCTLR_EL1 S3_0_C15_C2_7
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#define CORTEX_X2_CPUPWRCTLR_EL1_CORE_PWRDN_BIT U(1)
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/*******************************************************************************
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* CPU Auxiliary Control Register 5 definitions
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******************************************************************************/
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#define CORTEX_X2_CPUACTLR5_EL1 S3_0_C15_C8_0
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#define CORTEX_X2_CPUACTLR5_EL1_BIT_17 (ULL(1) << 17)
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/*******************************************************************************
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* CPU Implementation Specific Selected Instruction registers
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******************************************************************************/
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#define CORTEX_X2_IMP_CPUPSELR_EL3 S3_6_C15_C8_0
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#define CORTEX_X2_IMP_CPUPCR_EL3 S3_6_C15_C8_1
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#define CORTEX_X2_IMP_CPUPOR_EL3 S3_6_C15_C8_2
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#define CORTEX_X2_IMP_CPUPMR_EL3 S3_6_C15_C8_3
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#endif /* CORTEX_X2_H */
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