blob: c5241afab0529a70ea0d88e0fcc10b100c74affc [file] [log] [blame]
/*
* 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 <neoverse_zeus.h>
#include <cpu_macros.S>
#include <plat_macros.S>
/* Hardware handled coherency */
#if HW_ASSISTED_COHERENCY == 0
#error "Neoverse Zeus must be compiled with HW_ASSISTED_COHERENCY enabled"
#endif
/* ---------------------------------------------
* HW will do the cache maintenance while powering down
* ---------------------------------------------
*/
func neoverse_zeus_core_pwr_dwn
/* ---------------------------------------------
* Enable CPU power down bit in power control register
* ---------------------------------------------
*/
mrs x0, NEOVERSE_ZEUS_CPUPWRCTLR_EL1
orr x0, x0, #NEOVERSE_ZEUS_CPUPWRCTLR_EL1_CORE_PWRDN_BIT
msr NEOVERSE_ZEUS_CPUPWRCTLR_EL1, x0
isb
ret
endfunc neoverse_zeus_core_pwr_dwn
/*
* Errata printing function for Neoverse Zeus. Must follow AAPCS.
*/
#if REPORT_ERRATA
func neoverse_zeus_errata_report
ret
endfunc neoverse_zeus_errata_report
#endif
/* ---------------------------------------------
* This function provides Neoverse-Zeus 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.neoverse_zeus_regs, "aS"
neoverse_zeus_regs: /* The ascii list of register names to be reported */
.asciz "cpuectlr_el1", ""
func neoverse_zeus_cpu_reg_dump
adr x6, neoverse_zeus_regs
mrs x8, NEOVERSE_ZEUS_CPUECTLR_EL1
ret
endfunc neoverse_zeus_cpu_reg_dump
declare_cpu_ops neoverse_zeus, NEOVERSE_ZEUS_MIDR, \
CPU_NO_RESET_FUNC, \
neoverse_zeus_core_pwr_dwn