arm-trusted-firmware/include/lib/cpus/aarch64/cortex_a78c.h
Bipin Ravi 672eb21e26 fix(cpus): workaround for Cortex-A78C erratum 1827430
Cortex-A78C erratum 1827430 is a Cat B erratum that applies to
revision r0p0 and is fixed in r0p1.

The workaround is to set the CPUECTLR_EL1[53] to 1, which disables
allocation of splintered pages in the L2 TLB.

SDEN documentation:
https://developer.arm.com/documentation/SDEN1707916/latest

Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: Ie68771bdd3bddeff54d06b6a456dad4a7fc27426
2023-03-21 16:14:41 -05:00

50 lines
2.2 KiB
C

/*
* Copyright (c) 2021-2023, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef CORTEX_A78C_H
#define CORTEX_A78C_H
#define CORTEX_A78C_MIDR U(0x410FD4B1)
/* Cortex-A76 loop count for CVE-2022-23960 mitigation */
#define CORTEX_A78C_BHB_LOOP_COUNT U(32)
/*******************************************************************************
* CPU Auxiliary Control register 2 specific definitions.
* ****************************************************************************/
#define CORTEX_A78C_CPUACTLR2_EL1 S3_0_C15_C1_1
#define CORTEX_A78C_CPUACTLR2_EL1_BIT_0 (ULL(1) << 0)
#define CORTEX_A78C_CPUACTLR2_EL1_BIT_40 (ULL(1) << 40)
/*******************************************************************************
* CPU Extended Control register specific definitions.
******************************************************************************/
#define CORTEX_A78C_CPUECTLR_EL1 S3_0_C15_C1_4
#define CORTEX_A78C_CPUECTLR_EL1_BIT_6 (ULL(1) << 6)
#define CORTEX_A78C_CPUECTLR_EL1_BIT_7 (ULL(1) << 7)
#define CORTEX_A78C_CPUECTLR_EL1_MM_ASP_EN (ULL(1) << 53)
/*******************************************************************************
* CPU Power Control register specific definitions
******************************************************************************/
#define CORTEX_A78C_CPUPWRCTLR_EL1 S3_0_C15_C2_7
#define CORTEX_A78C_CPUPWRCTLR_EL1_CORE_PWRDN_EN_BIT U(1)
/*******************************************************************************
* CPU Auxiliary Control register 3 specific definitions.
******************************************************************************/
#define CORTEX_A78C_ACTLR3_EL1 S3_0_C15_C1_2
/*******************************************************************************
* CPU Implementation Specific Selected Instruction registers
******************************************************************************/
#define CORTEX_A78C_IMP_CPUPSELR_EL3 S3_6_C15_C8_0
#define CORTEX_A78C_IMP_CPUPCR_EL3 S3_6_C15_C8_1
#define CORTEX_A78C_IMP_CPUPOR_EL3 S3_6_C15_C8_2
#define CORTEX_A78C_IMP_CPUPMR_EL3 S3_6_C15_C8_3
#endif /* CORTEX_A78C_H */