/*
* 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>
func cortex_a75_reset_func
#if IMAGE_BL31 && WORKAROUND_CVE_2017_5715
adr x0, workaround_bpiall_vbar0_runtime_exceptions
msr vbar_el3, x0
#endif
#if ENABLE_AMU
/* Make sure accesses from EL0/EL1 and EL2 are not trapped to EL3 */
mrs x0, actlr_el3
orr x0, x0, #CORTEX_A75_ACTLR_AMEN_BIT
msr actlr_el3, x0
isb
/* Make sure accesses from EL0/EL1 are not trapped to EL2 */
mrs x0, actlr_el2
orr x0, x0, #CORTEX_A75_ACTLR_AMEN_BIT
msr actlr_el2, x0
isb
/* Enable group0 counters */
mov x0, #CORTEX_A75_AMU_GROUP0_MASK
msr CPUAMCNTENSET_EL0, x0
isb
/* Enable group1 counters */
mov x0, #CORTEX_A75_AMU_GROUP1_MASK
msr CPUAMCNTENSET_EL0, x0
isb
#endif
ret
endfunc cortex_a75_reset_func
/* ---------------------------------------------
* 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, \
cortex_a75_reset_func, \
cortex_a75_core_pwr_dwn
