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8118078b71
Add the basic CPU library code to support Cortex-A720AE. The overall library code is adapted based on Cortex-A720 code. Signed-off-by: David Hu <david.hu2@arm.com> Signed-off-by: Ahmed Azeem <ahmed.azeem@arm.com> Change-Id: I3d64dc5a3098cc823e656a5ad3ea05cd71598dc6
65 lines
1.9 KiB
ArmAsm
65 lines
1.9 KiB
ArmAsm
/*
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* Copyright (c) 2024, 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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#include <arch.h>
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#include <asm_macros.S>
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#include <common/bl_common.h>
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#include <cortex_a720_ae.h>
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#include <cpu_macros.S>
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#include <plat_macros.S>
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/* Hardware handled coherency */
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#if HW_ASSISTED_COHERENCY == 0
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#error "Cortex-A720AE must be compiled with HW_ASSISTED_COHERENCY enabled"
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#endif
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/* 64-bit only core */
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#if CTX_INCLUDE_AARCH32_REGS == 1
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#error "Cortex-A720AE supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0"
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#endif
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cpu_reset_func_start cortex_a720_ae
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/* Disable speculative loads */
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msr SSBS, xzr
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cpu_reset_func_end cortex_a720_ae
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/* ----------------------------------------------------
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* HW will do the cache maintenance while powering down
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* ----------------------------------------------------
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*/
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func cortex_a720_ae_core_pwr_dwn
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/* ---------------------------------------------------
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* Enable CPU power down bit in power control register
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* ---------------------------------------------------
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*/
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sysreg_bit_set CORTEX_A720_AE_CPUPWRCTLR_EL1, CORTEX_A720_AE_CPUPWRCTLR_EL1_CORE_PWRDN_BIT
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isb
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ret
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endfunc cortex_a720_ae_core_pwr_dwn
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/* ---------------------------------------------
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* This function provides Cortex-A720AE specific
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* register information for crash reporting.
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* It needs to return with x6 pointing to
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* a list of register names in ascii and
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* x8 - x15 having values of registers to be
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* reported.
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* ---------------------------------------------
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*/
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.section .rodata.cortex_a720_ae_regs, "aS"
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cortex_a720_ae_regs: /* The ascii list of register names to be reported */
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.asciz "cpuectlr_el1", ""
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func cortex_a720_ae_cpu_reg_dump
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adr x6, cortex_a720_ae_regs
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mrs x8, CORTEX_A720_AE_CPUECTLR_EL1
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ret
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endfunc cortex_a720_ae_cpu_reg_dump
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declare_cpu_ops cortex_a720_ae, CORTEX_A720_AE_MIDR, \
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cortex_a720_ae_reset_func, \
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cortex_a720_ae_core_pwr_dwn
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