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fb9e5f7bb7
This patch adds the basic CPU library code to support the Hunter CPU in TF-A. This CPU is based on the Makalu core so that library code was adapted as the basis for this patch. Signed-off-by: John Powell <john.powell@arm.com> Change-Id: I956b2dc0f43da7cec3e015252392e2694363e1b3
77 lines
2.1 KiB
ArmAsm
77 lines
2.1 KiB
ArmAsm
/*
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* Copyright (c) 2021, 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_hunter.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 Hunter 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 Hunter supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0"
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#endif
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func cortex_hunter_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_hunter_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_hunter_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_HUNTER_CPUPWRCTLR_EL1
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orr x0, x0, #CORTEX_HUNTER_CPUPWRCTLR_EL1_CORE_PWRDN_BIT
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msr CORTEX_HUNTER_CPUPWRCTLR_EL1, x0
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isb
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ret
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endfunc cortex_hunter_core_pwr_dwn
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#if REPORT_ERRATA
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/*
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* Errata printing function for Cortex Hunter. Must follow AAPCS.
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*/
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func cortex_hunter_errata_report
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ret
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endfunc cortex_hunter_errata_report
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#endif
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/* ---------------------------------------------
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* This function provides Cortex Hunter-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_hunter_regs, "aS"
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cortex_hunter_regs: /* The ascii list of register names to be reported */
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.asciz "cpuectlr_el1", ""
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func cortex_hunter_cpu_reg_dump
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adr x6, cortex_hunter_regs
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mrs x8, CORTEX_HUNTER_CPUECTLR_EL1
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ret
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endfunc cortex_hunter_cpu_reg_dump
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declare_cpu_ops cortex_hunter, CORTEX_HUNTER_MIDR, \
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cortex_hunter_reset_func, \
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cortex_hunter_core_pwr_dwn
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