| /* |
| * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| #include <arch.h> |
| #include <asm_macros.S> |
| #include <assert_macros.S> |
| #include <cortex_a57.h> |
| #include <cpu_macros.S> |
| #include <debug.h> |
| |
| /* --------------------------------------------- |
| * Disable intra-cluster coherency |
| * Clobbers: r0-r1 |
| * --------------------------------------------- |
| */ |
| func cortex_a57_disable_smp |
| ldcopr16 r0, r1, CORTEX_A57_ECTLR |
| bic64_imm r0, r1, CORTEX_A57_ECTLR_SMP_BIT |
| stcopr16 r0, r1, CORTEX_A57_ECTLR |
| bx lr |
| endfunc cortex_a57_disable_smp |
| |
| /* --------------------------------------------- |
| * Disable all types of L2 prefetches. |
| * Clobbers: r0-r2 |
| * --------------------------------------------- |
| */ |
| func cortex_a57_disable_l2_prefetch |
| ldcopr16 r0, r1, CORTEX_A57_ECTLR |
| orr64_imm r0, r1, CORTEX_A57_ECTLR_DIS_TWD_ACC_PFTCH_BIT |
| bic64_imm r0, r1, (CORTEX_A57_ECTLR_L2_IPFTCH_DIST_MASK | \ |
| CORTEX_A57_ECTLR_L2_DPFTCH_DIST_MASK) |
| stcopr16 r0, r1, CORTEX_A57_ECTLR |
| isb |
| dsb ish |
| bx lr |
| endfunc cortex_a57_disable_l2_prefetch |
| |
| /* --------------------------------------------- |
| * Disable debug interfaces |
| * --------------------------------------------- |
| */ |
| func cortex_a57_disable_ext_debug |
| mov r0, #1 |
| stcopr r0, DBGOSDLR |
| isb |
| dsb sy |
| bx lr |
| endfunc cortex_a57_disable_ext_debug |
| |
| /* -------------------------------------------------- |
| * Errata Workaround for Cortex A57 Errata #806969. |
| * This applies only to revision r0p0 of Cortex A57. |
| * Inputs: |
| * r0: variant[4:7] and revision[0:3] of current cpu. |
| * Shall clobber: r0-r3 |
| * -------------------------------------------------- |
| */ |
| func errata_a57_806969_wa |
| /* |
| * Compare r0 against revision r0p0 |
| */ |
| mov r2, lr |
| bl check_errata_806969 |
| mov lr, r2 |
| cmp r0, #ERRATA_NOT_APPLIES |
| beq 1f |
| ldcopr16 r0, r1, CORTEX_A57_ACTLR |
| orr64_imm r0, r1, CORTEX_A57_ACTLR_NO_ALLOC_WBWA |
| stcopr16 r0, r1, CORTEX_A57_ACTLR |
| 1: |
| bx lr |
| endfunc errata_a57_806969_wa |
| |
| func check_errata_806969 |
| mov r1, #0x00 |
| b cpu_rev_var_ls |
| endfunc check_errata_806969 |
| |
| /* --------------------------------------------------- |
| * Errata Workaround for Cortex A57 Errata #813419. |
| * This applies only to revision r0p0 of Cortex A57. |
| * --------------------------------------------------- |
| */ |
| func check_errata_813419 |
| /* |
| * Even though this is only needed for revision r0p0, it |
| * is always applied due to limitations of the current |
| * errata framework. |
| */ |
| mov r0, #ERRATA_APPLIES |
| bx lr |
| endfunc check_errata_813419 |
| |
| /* --------------------------------------------------- |
| * Errata Workaround for Cortex A57 Errata #813420. |
| * This applies only to revision r0p0 of Cortex A57. |
| * Inputs: |
| * r0: variant[4:7] and revision[0:3] of current cpu. |
| * Shall clobber: r0-r3 |
| * --------------------------------------------------- |
| */ |
| func errata_a57_813420_wa |
| /* |
| * Compare r0 against revision r0p0 |
| */ |
| mov r2, lr |
| bl check_errata_813420 |
| mov lr, r2 |
| cmp r0, #ERRATA_NOT_APPLIES |
| beq 1f |
| ldcopr16 r0, r1, CORTEX_A57_ACTLR |
| orr64_imm r0, r1, CORTEX_A57_ACTLR_DCC_AS_DCCI |
| stcopr16 r0, r1, CORTEX_A57_ACTLR |
| 1: |
| bx lr |
| endfunc errata_a57_813420_wa |
| |
| func check_errata_813420 |
| mov r1, #0x00 |
| b cpu_rev_var_ls |
| endfunc check_errata_813420 |
| |
| /* -------------------------------------------------------------------- |
| * Disable the over-read from the LDNP instruction. |
| * |
| * This applies to all revisions <= r1p2. The performance degradation |
| * observed with LDNP/STNP has been fixed on r1p3 and onwards. |
| * |
| * Inputs: |
| * r0: variant[4:7] and revision[0:3] of current cpu. |
| * Shall clobber: r0-r3 |
| * --------------------------------------------------------------------- |
| */ |
| func a57_disable_ldnp_overread |
| /* |
| * Compare r0 against revision r1p2 |
| */ |
| mov r2, lr |
| bl check_errata_disable_ldnp_overread |
| mov lr, r2 |
| cmp r0, #ERRATA_NOT_APPLIES |
| beq 1f |
| ldcopr16 r0, r1, CORTEX_A57_ACTLR |
| orr64_imm r0, r1, CORTEX_A57_ACTLR_DIS_OVERREAD |
| stcopr16 r0, r1, CORTEX_A57_ACTLR |
| 1: |
| bx lr |
| endfunc a57_disable_ldnp_overread |
| |
| func check_errata_disable_ldnp_overread |
| mov r1, #0x12 |
| b cpu_rev_var_ls |
| endfunc check_errata_disable_ldnp_overread |
| |
| /* --------------------------------------------------- |
| * Errata Workaround for Cortex A57 Errata #826974. |
| * This applies only to revision <= r1p1 of Cortex A57. |
| * Inputs: |
| * r0: variant[4:7] and revision[0:3] of current cpu. |
| * Shall clobber: r0-r3 |
| * --------------------------------------------------- |
| */ |
| func errata_a57_826974_wa |
| /* |
| * Compare r0 against revision r1p1 |
| */ |
| mov r2, lr |
| bl check_errata_826974 |
| mov lr, r2 |
| cmp r0, #ERRATA_NOT_APPLIES |
| beq 1f |
| ldcopr16 r0, r1, CORTEX_A57_ACTLR |
| orr64_imm r0, r1, CORTEX_A57_ACTLR_DIS_LOAD_PASS_DMB |
| stcopr16 r0, r1, CORTEX_A57_ACTLR |
| 1: |
| bx lr |
| endfunc errata_a57_826974_wa |
| |
| func check_errata_826974 |
| mov r1, #0x11 |
| b cpu_rev_var_ls |
| endfunc check_errata_826974 |
| |
| /* --------------------------------------------------- |
| * Errata Workaround for Cortex A57 Errata #826977. |
| * This applies only to revision <= r1p1 of Cortex A57. |
| * Inputs: |
| * r0: variant[4:7] and revision[0:3] of current cpu. |
| * Shall clobber: r0-r3 |
| * --------------------------------------------------- |
| */ |
| func errata_a57_826977_wa |
| /* |
| * Compare r0 against revision r1p1 |
| */ |
| mov r2, lr |
| bl check_errata_826977 |
| mov lr, r2 |
| cmp r0, #ERRATA_NOT_APPLIES |
| beq 1f |
| ldcopr16 r0, r1, CORTEX_A57_ACTLR |
| orr64_imm r0, r1, CORTEX_A57_ACTLR_GRE_NGRE_AS_NGNRE |
| stcopr16 r0, r1, CORTEX_A57_ACTLR |
| 1: |
| bx lr |
| endfunc errata_a57_826977_wa |
| |
| func check_errata_826977 |
| mov r1, #0x11 |
| b cpu_rev_var_ls |
| endfunc check_errata_826977 |
| |
| /* --------------------------------------------------- |
| * Errata Workaround for Cortex A57 Errata #828024. |
| * This applies only to revision <= r1p1 of Cortex A57. |
| * Inputs: |
| * r0: variant[4:7] and revision[0:3] of current cpu. |
| * Shall clobber: r0-r3 |
| * --------------------------------------------------- |
| */ |
| func errata_a57_828024_wa |
| /* |
| * Compare r0 against revision r1p1 |
| */ |
| mov r2, lr |
| bl check_errata_828024 |
| mov lr, r2 |
| cmp r0, #ERRATA_NOT_APPLIES |
| beq 1f |
| ldcopr16 r0, r1, CORTEX_A57_ACTLR |
| /* |
| * Setting the relevant bits in CORTEX_A57_ACTLR has to be done in 2 |
| * instructions here because the resulting bitmask doesn't fit in a |
| * 16-bit value so it cannot be encoded in a single instruction. |
| */ |
| orr64_imm r0, r1, CORTEX_A57_ACTLR_NO_ALLOC_WBWA |
| orr64_imm r0, r1, (CORTEX_A57_ACTLR_DIS_L1_STREAMING | CORTEX_A57_ACTLR_DIS_STREAMING) |
| stcopr16 r0, r1, CORTEX_A57_ACTLR |
| 1: |
| bx lr |
| endfunc errata_a57_828024_wa |
| |
| func check_errata_828024 |
| mov r1, #0x11 |
| b cpu_rev_var_ls |
| endfunc check_errata_828024 |
| |
| /* --------------------------------------------------- |
| * Errata Workaround for Cortex A57 Errata #829520. |
| * This applies only to revision <= r1p2 of Cortex A57. |
| * Inputs: |
| * r0: variant[4:7] and revision[0:3] of current cpu. |
| * Shall clobber: r0-r3 |
| * --------------------------------------------------- |
| */ |
| func errata_a57_829520_wa |
| /* |
| * Compare r0 against revision r1p2 |
| */ |
| mov r2, lr |
| bl check_errata_829520 |
| mov lr, r2 |
| cmp r0, #ERRATA_NOT_APPLIES |
| beq 1f |
| ldcopr16 r0, r1, CORTEX_A57_ACTLR |
| orr64_imm r0, r1, CORTEX_A57_ACTLR_DIS_INDIRECT_PREDICTOR |
| stcopr16 r0, r1, CORTEX_A57_ACTLR |
| 1: |
| bx lr |
| endfunc errata_a57_829520_wa |
| |
| func check_errata_829520 |
| mov r1, #0x12 |
| b cpu_rev_var_ls |
| endfunc check_errata_829520 |
| |
| /* --------------------------------------------------- |
| * Errata Workaround for Cortex A57 Errata #833471. |
| * This applies only to revision <= r1p2 of Cortex A57. |
| * Inputs: |
| * r0: variant[4:7] and revision[0:3] of current cpu. |
| * Shall clobber: r0-r3 |
| * --------------------------------------------------- |
| */ |
| func errata_a57_833471_wa |
| /* |
| * Compare r0 against revision r1p2 |
| */ |
| mov r2, lr |
| bl check_errata_833471 |
| mov lr, r2 |
| cmp r0, #ERRATA_NOT_APPLIES |
| beq 1f |
| ldcopr16 r0, r1, CORTEX_A57_ACTLR |
| orr64_imm r1, r1, CORTEX_A57_ACTLR_FORCE_FPSCR_FLUSH |
| stcopr16 r0, r1, CORTEX_A57_ACTLR |
| 1: |
| bx lr |
| endfunc errata_a57_833471_wa |
| |
| func check_errata_833471 |
| mov r1, #0x12 |
| b cpu_rev_var_ls |
| endfunc check_errata_833471 |
| |
| /* ------------------------------------------------- |
| * The CPU Ops reset function for Cortex-A57. |
| * Shall clobber: r0-r6 |
| * ------------------------------------------------- |
| */ |
| func cortex_a57_reset_func |
| mov r5, lr |
| bl cpu_get_rev_var |
| mov r4, r0 |
| |
| #if ERRATA_A57_806969 |
| mov r0, r4 |
| bl errata_a57_806969_wa |
| #endif |
| |
| #if ERRATA_A57_813420 |
| mov r0, r4 |
| bl errata_a57_813420_wa |
| #endif |
| |
| #if A57_DISABLE_NON_TEMPORAL_HINT |
| mov r0, r4 |
| bl a57_disable_ldnp_overread |
| #endif |
| |
| #if ERRATA_A57_826974 |
| mov r0, r4 |
| bl errata_a57_826974_wa |
| #endif |
| |
| #if ERRATA_A57_826977 |
| mov r0, r4 |
| bl errata_a57_826977_wa |
| #endif |
| |
| #if ERRATA_A57_828024 |
| mov r0, r4 |
| bl errata_a57_828024_wa |
| #endif |
| |
| #if ERRATA_A57_829520 |
| mov r0, r4 |
| bl errata_a57_829520_wa |
| #endif |
| |
| #if ERRATA_A57_833471 |
| mov r0, r4 |
| bl errata_a57_833471_wa |
| #endif |
| |
| /* --------------------------------------------- |
| * Enable the SMP bit. |
| * --------------------------------------------- |
| */ |
| ldcopr16 r0, r1, CORTEX_A57_ECTLR |
| orr64_imm r0, r1, CORTEX_A57_ECTLR_SMP_BIT |
| stcopr16 r0, r1, CORTEX_A57_ECTLR |
| isb |
| bx r5 |
| endfunc cortex_a57_reset_func |
| |
| /* ---------------------------------------------------- |
| * The CPU Ops core power down function for Cortex-A57. |
| * ---------------------------------------------------- |
| */ |
| func cortex_a57_core_pwr_dwn |
| push {r12, lr} |
| |
| /* Assert if cache is enabled */ |
| #if ASM_ASSERTION |
| ldcopr r0, SCTLR |
| tst r0, #SCTLR_C_BIT |
| ASM_ASSERT(eq) |
| #endif |
| |
| /* --------------------------------------------- |
| * Disable the L2 prefetches. |
| * --------------------------------------------- |
| */ |
| bl cortex_a57_disable_l2_prefetch |
| |
| /* --------------------------------------------- |
| * Flush L1 caches. |
| * --------------------------------------------- |
| */ |
| mov r0, #DC_OP_CISW |
| bl dcsw_op_level1 |
| |
| /* --------------------------------------------- |
| * Come out of intra cluster coherency |
| * --------------------------------------------- |
| */ |
| bl cortex_a57_disable_smp |
| |
| /* --------------------------------------------- |
| * Force the debug interfaces to be quiescent |
| * --------------------------------------------- |
| */ |
| pop {r12, lr} |
| b cortex_a57_disable_ext_debug |
| endfunc cortex_a57_core_pwr_dwn |
| |
| /* ------------------------------------------------------- |
| * The CPU Ops cluster power down function for Cortex-A57. |
| * Clobbers: r0-r3 |
| * ------------------------------------------------------- |
| */ |
| func cortex_a57_cluster_pwr_dwn |
| push {r12, lr} |
| |
| /* Assert if cache is enabled */ |
| #if ASM_ASSERTION |
| ldcopr r0, SCTLR |
| tst r0, #SCTLR_C_BIT |
| ASM_ASSERT(eq) |
| #endif |
| |
| /* --------------------------------------------- |
| * Disable the L2 prefetches. |
| * --------------------------------------------- |
| */ |
| bl cortex_a57_disable_l2_prefetch |
| |
| /* --------------------------------------------- |
| * Flush L1 caches. |
| * --------------------------------------------- |
| */ |
| mov r0, #DC_OP_CISW |
| bl dcsw_op_level1 |
| |
| /* --------------------------------------------- |
| * Disable the optional ACP. |
| * --------------------------------------------- |
| */ |
| bl plat_disable_acp |
| |
| /* --------------------------------------------- |
| * Flush L2 caches. |
| * --------------------------------------------- |
| */ |
| mov r0, #DC_OP_CISW |
| bl dcsw_op_level2 |
| |
| /* --------------------------------------------- |
| * Come out of intra cluster coherency |
| * --------------------------------------------- |
| */ |
| bl cortex_a57_disable_smp |
| |
| /* --------------------------------------------- |
| * Force the debug interfaces to be quiescent |
| * --------------------------------------------- |
| */ |
| pop {r12, lr} |
| b cortex_a57_disable_ext_debug |
| endfunc cortex_a57_cluster_pwr_dwn |
| |
| #if REPORT_ERRATA |
| /* |
| * Errata printing function for Cortex A57. Must follow AAPCS. |
| */ |
| func cortex_a57_errata_report |
| push {r12, lr} |
| |
| bl cpu_get_rev_var |
| mov r4, r0 |
| |
| /* |
| * Report all errata. The revision-variant information is passed to |
| * checking functions of each errata. |
| */ |
| report_errata ERRATA_A57_806969, cortex_a57, 806969 |
| report_errata ERRATA_A57_813419, cortex_a57, 813419 |
| report_errata ERRATA_A57_813420, cortex_a57, 813420 |
| report_errata A57_DISABLE_NON_TEMPORAL_HINT, cortex_a57, \ |
| disable_ldnp_overread |
| report_errata ERRATA_A57_826974, cortex_a57, 826974 |
| report_errata ERRATA_A57_826977, cortex_a57, 826977 |
| report_errata ERRATA_A57_828024, cortex_a57, 828024 |
| report_errata ERRATA_A57_829520, cortex_a57, 829520 |
| report_errata ERRATA_A57_833471, cortex_a57, 833471 |
| |
| pop {r12, lr} |
| bx lr |
| endfunc cortex_a57_errata_report |
| #endif |
| |
| declare_cpu_ops cortex_a57, CORTEX_A57_MIDR, \ |
| cortex_a57_reset_func, \ |
| cortex_a57_core_pwr_dwn, \ |
| cortex_a57_cluster_pwr_dwn |
