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/*
* Copyright (c) 2016-2018, 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 <cortex_a73.h>
#include <cpu_macros.S>
#include <plat_macros.S>
/* ---------------------------------------------
* Disable L1 data cache
* ---------------------------------------------
*/
func cortex_a73_disable_dcache
mrs x1, sctlr_el3
bic x1, x1, #SCTLR_C_BIT
msr sctlr_el3, x1
isb
ret
endfunc cortex_a73_disable_dcache
/* ---------------------------------------------
* Disable intra-cluster coherency
* ---------------------------------------------
*/
func cortex_a73_disable_smp
mrs x0, CORTEX_A73_CPUECTLR_EL1
bic x0, x0, #CORTEX_A73_CPUECTLR_SMP_BIT
msr CORTEX_A73_CPUECTLR_EL1, x0
isb
dsb sy
ret
endfunc cortex_a73_disable_smp
func cortex_a73_reset_func
#if IMAGE_BL31 && WORKAROUND_CVE_2017_5715
cpu_check_csv2 x0, 1f
adr x0, wa_cve_2017_5715_bpiall_vbar
msr vbar_el3, x0
/* isb will be performed before returning from this function */
1:
#endif
#if WORKAROUND_CVE_2018_3639
mrs x0, CORTEX_A73_IMP_DEF_REG1
orr x0, x0, #CORTEX_A73_IMP_DEF_REG1_DISABLE_LOAD_PASS_STORE
msr CORTEX_A73_IMP_DEF_REG1, x0
isb
#endif
/* ---------------------------------------------
* Enable the SMP bit.
* Clobbers : x0
* ---------------------------------------------
*/
mrs x0, CORTEX_A73_CPUECTLR_EL1
orr x0, x0, #CORTEX_A73_CPUECTLR_SMP_BIT
msr CORTEX_A73_CPUECTLR_EL1, x0
isb
ret
endfunc cortex_a73_reset_func
func cortex_a73_core_pwr_dwn
mov x18, x30
/* ---------------------------------------------
* Turn off caches.
* ---------------------------------------------
*/
bl cortex_a73_disable_dcache
/* ---------------------------------------------
* Flush L1 caches.
* ---------------------------------------------
*/
mov x0, #DCCISW
bl dcsw_op_level1
/* ---------------------------------------------
* Come out of intra cluster coherency
* ---------------------------------------------
*/
mov x30, x18
b cortex_a73_disable_smp
endfunc cortex_a73_core_pwr_dwn
func cortex_a73_cluster_pwr_dwn
mov x18, x30
/* ---------------------------------------------
* Turn off caches.
* ---------------------------------------------
*/
bl cortex_a73_disable_dcache
/* ---------------------------------------------
* Flush L1 caches.
* ---------------------------------------------
*/
mov x0, #DCCISW
bl dcsw_op_level1
/* ---------------------------------------------
* Disable the optional ACP.
* ---------------------------------------------
*/
bl plat_disable_acp
/* ---------------------------------------------
* Flush L2 caches.
* ---------------------------------------------
*/
mov x0, #DCCISW
bl dcsw_op_level2
/* ---------------------------------------------
* Come out of intra cluster coherency
* ---------------------------------------------
*/
mov x30, x18
b cortex_a73_disable_smp
endfunc cortex_a73_cluster_pwr_dwn
func check_errata_cve_2017_5715
cpu_check_csv2 x0, 1f
#if WORKAROUND_CVE_2017_5715
mov x0, #ERRATA_APPLIES
#else
mov x0, #ERRATA_MISSING
#endif
ret
1:
mov x0, #ERRATA_NOT_APPLIES
ret
endfunc check_errata_cve_2017_5715
func check_errata_cve_2018_3639
#if WORKAROUND_CVE_2018_3639
mov x0, #ERRATA_APPLIES
#else
mov x0, #ERRATA_MISSING
#endif
ret
endfunc check_errata_cve_2018_3639
#if REPORT_ERRATA
/*
* Errata printing function for Cortex A75. Must follow AAPCS.
*/
func cortex_a73_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 WORKAROUND_CVE_2017_5715, cortex_a73, cve_2017_5715
report_errata WORKAROUND_CVE_2018_3639, cortex_a73, cve_2018_3639
ldp x8, x30, [sp], #16
ret
endfunc cortex_a73_errata_report
#endif
/* ---------------------------------------------
* This function provides cortex_a73 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_a73_regs, "aS"
cortex_a73_regs: /* The ascii list of register names to be reported */
.asciz "cpuectlr_el1", "l2merrsr_el1", ""
func cortex_a73_cpu_reg_dump
adr x6, cortex_a73_regs
mrs x8, CORTEX_A73_CPUECTLR_EL1
mrs x9, CORTEX_A73_L2MERRSR_EL1
ret
endfunc cortex_a73_cpu_reg_dump
declare_cpu_ops_wa cortex_a73, CORTEX_A73_MIDR, \
cortex_a73_reset_func, \
check_errata_cve_2017_5715, \
CPU_NO_EXTRA2_FUNC, \
cortex_a73_core_pwr_dwn, \
cortex_a73_cluster_pwr_dwn