blob: 87a9bdf2b7b6d2912424411b104166929ee1b28d [file] [log] [blame]
/*
* Copyright (c) 2021, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch.h>
#include <asm_macros.S>
#include <common/bl_common.h>
#include <cortex_x2.h>
#include <cpu_macros.S>
#include <plat_macros.S>
/* Hardware handled coherency */
#if HW_ASSISTED_COHERENCY == 0
#error "Cortex X2 must be compiled with HW_ASSISTED_COHERENCY enabled"
#endif
/* 64-bit only core */
#if CTX_INCLUDE_AARCH32_REGS == 1
#error "Cortex X2 supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0"
#endif
/* ----------------------------------------------------
* HW will do the cache maintenance while powering down
* ----------------------------------------------------
*/
func cortex_x2_core_pwr_dwn
/* ---------------------------------------------------
* Enable CPU power down bit in power control register
* ---------------------------------------------------
*/
mrs x0, CORTEX_X2_CPUPWRCTLR_EL1
orr x0, x0, #CORTEX_X2_CPUPWRCTLR_EL1_CORE_PWRDN_BIT
msr CORTEX_X2_CPUPWRCTLR_EL1, x0
isb
ret
endfunc cortex_x2_core_pwr_dwn
/*
* Errata printing function for Cortex X2. Must follow AAPCS.
*/
#if REPORT_ERRATA
func cortex_x2_errata_report
ret
endfunc cortex_x2_errata_report
#endif
func cortex_x2_reset_func
/* Disable speculative loads */
msr SSBS, xzr
isb
ret
endfunc cortex_x2_reset_func
/* ---------------------------------------------
* This function provides Cortex X2 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_x2_regs, "aS"
cortex_x2_regs: /* The ascii list of register names to be reported */
.asciz "cpuectlr_el1", ""
func cortex_x2_cpu_reg_dump
adr x6, cortex_x2_regs
mrs x8, CORTEX_X2_CPUECTLR_EL1
ret
endfunc cortex_x2_cpu_reg_dump
declare_cpu_ops cortex_x2, CORTEX_X2_MIDR, \
cortex_x2_reset_func, \
cortex_x2_core_pwr_dwn