lib/cpus/aarch64/cortex_a65ae.S

/*
 * Copyright (c) 2019, Arm Limited. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */
#include <arch.h>

#include <asm_macros.S>
#include <common/bl_common.h>
#include <common/debug.h>
#include <cortex_a65ae.h>
#include <cpu_macros.S>
#include <plat_macros.S>

/* Hardware handled coherency */
#if !HW_ASSISTED_COHERENCY
#error "Cortex-A65AE must be compiled with HW_ASSISTED_COHERENCY enabled"
#endif

/* 64-bit only core */
#if CTX_INCLUDE_AARCH32_REGS
#error "Cortex-A65AE supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0"
#endif

/* -------------------------------------------------
 * The CPU Ops reset function for Cortex-A65.
 * Shall clobber: x0-x19
 * -------------------------------------------------
 */
func cortex_a65ae_reset_func
	mov	x19, x30

#if ERRATA_DSU_936184
	bl	errata_dsu_936184_wa
#endif

	ret	x19
endfunc cortex_a65ae_reset_func

func cortex_a65ae_cpu_pwr_dwn
	mrs	x0, CORTEX_A65AE_CPUPWRCTLR_EL1
	orr	x0, x0, #CORTEX_A65AE_CPUPWRCTLR_EL1_CORE_PWRDN_BIT
	msr	CORTEX_A65AE_CPUPWRCTLR_EL1, x0
	isb
	ret
endfunc cortex_a65ae_cpu_pwr_dwn

#if REPORT_ERRATA
/*
 * Errata printing function for Cortex-A65AE. Must follow AAPCS.
 */
func cortex_a65ae_errata_report
	stp	x8, x30, [sp, #-16]!

	bl	cpu_get_rev_var
	mov	x8, x0

	/*
	 * Report all errata. The revision-variant information is passed to
	 * checking functions of each errata.
	 */
	report_errata ERRATA_DSU_936184, cortex_a65ae, dsu_936184

	ldp	x8, x30, [sp], #16
	ret
endfunc cortex_a65ae_errata_report
#endif

.section .rodata.cortex_a65ae_regs, "aS"
cortex_a65ae_regs:  /* The ascii list of register names to be reported */
	.asciz	"cpuectlr_el1", ""

func cortex_a65ae_cpu_reg_dump
	adr	x6, cortex_a65ae_regs
	mrs	x8, CORTEX_A65AE_ECTLR_EL1
	ret
endfunc cortex_a65ae_cpu_reg_dump

declare_cpu_ops cortex_a65ae, CORTEX_A65AE_MIDR, \
	cortex_a65ae_reset_func, \
	cortex_a65ae_cpu_pwr_dwn