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516a52f6f5
Add basic CPU library code to support the Chaberton CPU, Chaberton cores are based out of Hunter core, so overall library code was adapted based on that. Change-Id: I58321c77f2c364225a764da6fa65656d1bec33f1 Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
77 lines
2.2 KiB
ArmAsm
77 lines
2.2 KiB
ArmAsm
/*
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* Copyright (c) 2023, 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_chaberton.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 Chaberton 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 Chaberton supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0"
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#endif
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func cortex_chaberton_reset_func
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/* Disable speculative loads */
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msr SSBS, xzr
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isb
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ret
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endfunc cortex_chaberton_reset_func
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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_chaberton_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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mrs x0, CORTEX_CHABERTON_CPUPWRCTLR_EL1
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orr x0, x0, #CORTEX_CHABERTON_CPUPWRCTLR_EL1_CORE_PWRDN_BIT
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msr CORTEX_CHABERTON_CPUPWRCTLR_EL1, x0
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isb
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ret
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endfunc cortex_chaberton_core_pwr_dwn
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#if REPORT_ERRATA
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/*
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* Errata printing function for Cortex Chaberton. Must follow AAPCS.
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*/
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func cortex_chaberton_errata_report
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ret
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endfunc cortex_chaberton_errata_report
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#endif
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/* ---------------------------------------------
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* This function provides Cortex Chaberton 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_chaberton_regs, "aS"
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cortex_chaberton_regs: /* The ascii list of register names to be reported */
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.asciz "cpuectlr_el1", ""
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func cortex_chaberton_cpu_reg_dump
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adr x6, cortex_chaberton_regs
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mrs x8, CORTEX_CHABERTON_CPUECTLR_EL1
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ret
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endfunc cortex_chaberton_cpu_reg_dump
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declare_cpu_ops cortex_chaberton, CORTEX_CHABERTON_MIDR, \
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cortex_chaberton_reset_func, \
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cortex_chaberton_core_pwr_dwn
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