1/* 2 * Copyright (c) 2021-2024, Arm Limited. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7#include <arch.h> 8#include <asm_macros.S> 9#include <common/bl_common.h> 10#include <cortex_x3.h> 11#include <cpu_macros.S> 12#include <plat_macros.S> 13#include "wa_cve_2022_23960_bhb_vector.S" 14 15/* Hardware handled coherency */ 16#if HW_ASSISTED_COHERENCY == 0 17#error "Cortex-X3 must be compiled with HW_ASSISTED_COHERENCY enabled" 18#endif 19 20/* 64-bit only core */ 21#if CTX_INCLUDE_AARCH32_REGS == 1 22#error "Cortex-X3 supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0" 23#endif 24 25#if WORKAROUND_CVE_2022_23960 26 wa_cve_2022_23960_bhb_vector_table CORTEX_X3_BHB_LOOP_COUNT, cortex_x3 27#endif /* WORKAROUND_CVE_2022_23960 */ 28 29workaround_reset_start cortex_x3, ERRATUM(2070301), ERRATA_X3_2070301 30 sysreg_bitfield_insert CORTEX_X3_CPUECTLR2_EL1, CORTEX_X3_CPUECTLR2_EL1_PF_MODE_CNSRV, \ 31 CORTEX_X3_CPUECTLR2_EL1_PF_MODE_LSB, CORTEX_X3_CPUECTLR2_EL1_PF_MODE_WIDTH 32workaround_reset_end cortex_x3, ERRATUM(2070301) 33 34check_erratum_ls cortex_x3, ERRATUM(2070301), CPU_REV(1, 2) 35 36workaround_reset_start cortex_x3, ERRATUM(2266875), ERRATA_X3_2266875 37 sysreg_bit_set CORTEX_X3_CPUACTLR_EL1, BIT(22) 38workaround_reset_end cortex_x3, ERRATUM(2266875) 39 40check_erratum_ls cortex_x3, ERRATUM(2266875), CPU_REV(1, 0) 41 42workaround_runtime_start cortex_x3, ERRATUM(2302506), ERRATA_X3_2302506 43 sysreg_bit_set CORTEX_X3_CPUACTLR2_EL1, BIT(0) 44workaround_runtime_end cortex_x3, ERRATUM(2302506), NO_ISB 45 46check_erratum_ls cortex_x3, ERRATUM(2302506), CPU_REV(1, 1) 47 48workaround_runtime_start cortex_x3, ERRATUM(2313909), ERRATA_X3_2313909 49 sysreg_bit_set CORTEX_X3_CPUACTLR2_EL1, CORTEX_X3_CPUACTLR2_EL1_BIT_36 50workaround_runtime_end cortex_x3, ERRATUM(2313909), NO_ISB 51 52check_erratum_ls cortex_x3, ERRATUM(2313909), CPU_REV(1, 0) 53 54workaround_reset_start cortex_x3, ERRATUM(2615812), ERRATA_X3_2615812 55 /* Disable retention control for WFI and WFE. */ 56 mrs x0, CORTEX_X3_CPUPWRCTLR_EL1 57 bfi x0, xzr, #CORTEX_X3_CPUPWRCTLR_EL1_WFI_RET_CTRL_BITS_SHIFT, #3 58 bfi x0, xzr, #CORTEX_X3_CPUPWRCTLR_EL1_WFE_RET_CTRL_BITS_SHIFT, #3 59 msr CORTEX_X3_CPUPWRCTLR_EL1, x0 60workaround_reset_end cortex_x3, ERRATUM(2615812) 61 62check_erratum_ls cortex_x3, ERRATUM(2615812), CPU_REV(1, 1) 63 64workaround_runtime_start cortex_x3, ERRATUM(2641945), ERRATA_X3_2641945 65 sysreg_bit_set CORTEX_X3_CPUACTLR6_EL1, BIT(41) 66workaround_runtime_end cortex_x3, ERRATUM(2641945), NO_ISB 67 68check_erratum_ls cortex_x3, ERRATUM(2641945), CPU_REV(1, 0) 69 70workaround_reset_start cortex_x3, ERRATUM(2742421), ERRATA_X3_2742421 71 /* Set CPUACTLR5_EL1[56:55] to 2'b01 */ 72 sysreg_bit_set CORTEX_X3_CPUACTLR5_EL1, CORTEX_X3_CPUACTLR5_EL1_BIT_55 73 sysreg_bit_clear CORTEX_X3_CPUACTLR5_EL1, CORTEX_X3_CPUACTLR5_EL1_BIT_56 74workaround_reset_end cortex_x3, ERRATUM(2742421) 75 76check_erratum_ls cortex_x3, ERRATUM(2742421), CPU_REV(1, 1) 77 78workaround_runtime_start cortex_x3, ERRATUM(2743088), ERRATA_X3_2743088 79 /* dsb before isb of power down sequence */ 80 dsb sy 81workaround_runtime_end cortex_x3, ERRATUM(2743088), NO_ISB 82 83check_erratum_ls cortex_x3, ERRATUM(2743088), CPU_REV(1, 1) 84 85workaround_reset_start cortex_x3, ERRATUM(2779509), ERRATA_X3_2779509 86 /* Set CPUACTLR3_EL1 bit 47 */ 87 sysreg_bit_set CORTEX_X3_CPUACTLR3_EL1, CORTEX_X3_CPUACTLR3_EL1_BIT_47 88workaround_reset_end cortex_x3, ERRATUM(2779509) 89 90check_erratum_ls cortex_x3, ERRATUM(2779509), CPU_REV(1, 1) 91 92workaround_reset_start cortex_x3, CVE(2022, 23960), WORKAROUND_CVE_2022_23960 93#if IMAGE_BL31 94 override_vector_table wa_cve_vbar_cortex_x3 95#endif /* IMAGE_BL31 */ 96workaround_reset_end cortex_x3, CVE(2022, 23960) 97 98check_erratum_chosen cortex_x3, CVE(2022, 23960), WORKAROUND_CVE_2022_23960 99 100cpu_reset_func_start cortex_x3 101 /* Disable speculative loads */ 102 msr SSBS, xzr 103cpu_reset_func_end cortex_x3 104 105 /* ---------------------------------------------------- 106 * HW will do the cache maintenance while powering down 107 * ---------------------------------------------------- 108 */ 109func cortex_x3_core_pwr_dwn 110 apply_erratum cortex_x3, ERRATUM(2313909), ERRATA_X3_2313909 111 /* --------------------------------------------------- 112 * Enable CPU power down bit in power control register 113 * --------------------------------------------------- 114 */ 115 sysreg_bit_set CORTEX_X3_CPUPWRCTLR_EL1, CORTEX_X3_CPUPWRCTLR_EL1_CORE_PWRDN_BIT 116 apply_erratum cortex_x3, ERRATUM(2743088), ERRATA_X3_2743088 117 isb 118 ret 119endfunc cortex_x3_core_pwr_dwn 120 121errata_report_shim cortex_x3 122 123 /* --------------------------------------------- 124 * This function provides Cortex-X3- 125 * specific register information for crash 126 * reporting. It needs to return with x6 127 * pointing to a list of register names in ascii 128 * and x8 - x15 having values of registers to be 129 * reported. 130 * --------------------------------------------- 131 */ 132.section .rodata.cortex_x3_regs, "aS" 133cortex_x3_regs: /* The ascii list of register names to be reported */ 134 .asciz "cpuectlr_el1", "" 135 136func cortex_x3_cpu_reg_dump 137 adr x6, cortex_x3_regs 138 mrs x8, CORTEX_X3_CPUECTLR_EL1 139 ret 140endfunc cortex_x3_cpu_reg_dump 141 142declare_cpu_ops cortex_x3, CORTEX_X3_MIDR, \ 143 cortex_x3_reset_func, \ 144 cortex_x3_core_pwr_dwn 145