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cortex_a75.S 1.44 KB
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David Wang's avatar
Add support for Cortex-A75 and Cortex-A55 CPUs    
David Wang committed
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/*
 * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <arch.h>
#include <asm_macros.S>
#include <bl_common.h>
#include <cpu_macros.S>
#include <plat_macros.S>
#include <cortex_a75.h>

	/* ---------------------------------------------
	 * HW will do the cache maintenance while powering down
	 * ---------------------------------------------
	 */
func cortex_a75_core_pwr_dwn
	/* ---------------------------------------------
	 * Enable CPU power down bit in power control register
	 * ---------------------------------------------
	 */
	mrs	x0, CORTEX_A75_CPUPWRCTLR_EL1
	orr	x0, x0, #CORTEX_A75_CORE_PWRDN_EN_MASK
	msr	CORTEX_A75_CPUPWRCTLR_EL1, x0
	isb
	ret
endfunc cortex_a75_core_pwr_dwn

	/* ---------------------------------------------
	 * This function provides cortex_a75 specific
	 * register information for crash reporting.
	 * It needs to return with x6 pointing to
	 * a list of register names in ascii and
	 * x8 - x15 having values of registers to be
	 * reported.
	 * ---------------------------------------------
	 */
.section .rodata.cortex_a75_regs, "aS"
cortex_a75_regs:  /* The ascii list of register names to be reported */
	.asciz	"cpuectlr_el1", ""

func cortex_a75_cpu_reg_dump
	adr	x6, cortex_a75_regs
	mrs	x8, CORTEX_A75_CPUECTLR_EL1
	ret
endfunc cortex_a75_cpu_reg_dump

declare_cpu_ops cortex_a75, CORTEX_A75_MIDR, \
	CPU_NO_RESET_FUNC, \
	cortex_a75_core_pwr_dwn