| Imre Kis | 05e4d22 | 2019-07-18 14:30:03 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2019, Arm Limited. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | #include <arch.h> |
| 7 | |
| 8 | #include <asm_macros.S> |
| 9 | #include <common/bl_common.h> |
| 10 | #include <common/debug.h> |
| 11 | #include <cortex_a65.h> |
| 12 | #include <cpu_macros.S> |
| 13 | #include <plat_macros.S> |
| 14 | |
| 15 | /* Hardware handled coherency */ |
| 16 | #if !HW_ASSISTED_COHERENCY |
| 17 | #error "Cortex-A65 must be compiled with HW_ASSISTED_COHERENCY enabled" |
| 18 | #endif |
| 19 | |
| 20 | /* 64-bit only core */ |
| 21 | #if CTX_INCLUDE_AARCH32_REGS |
| 22 | #error "Cortex-A65 supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0" |
| 23 | #endif |
| 24 | |
| 25 | /* ------------------------------------------------- |
| 26 | * The CPU Ops reset function for Cortex-A65. |
| 27 | * Shall clobber: x0-x19 |
| 28 | * ------------------------------------------------- |
| 29 | */ |
| 30 | func cortex_a65_reset_func |
| 31 | mov x19, x30 |
| 32 | |
| 33 | #if ERRATA_DSU_936184 |
| 34 | bl errata_dsu_936184_wa |
| 35 | #endif |
| 36 | |
| 37 | ret x19 |
| 38 | endfunc cortex_a65_reset_func |
| 39 | |
| 40 | func cortex_a65_cpu_pwr_dwn |
| 41 | mrs x0, CORTEX_A65_CPUPWRCTLR_EL1 |
| 42 | orr x0, x0, #CORTEX_A65_CPUPWRCTLR_EL1_CORE_PWRDN_BIT |
| 43 | msr CORTEX_A65_CPUPWRCTLR_EL1, x0 |
| 44 | isb |
| 45 | ret |
| 46 | endfunc cortex_a65_cpu_pwr_dwn |
| 47 | |
| 48 | #if REPORT_ERRATA |
| 49 | /* |
| 50 | * Errata printing function for Cortex-A65. Must follow AAPCS. |
| 51 | */ |
| 52 | func cortex_a65_errata_report |
| 53 | stp x8, x30, [sp, #-16]! |
| 54 | |
| 55 | bl cpu_get_rev_var |
| 56 | mov x8, x0 |
| 57 | |
| 58 | /* |
| 59 | * Report all errata. The revision-variant information is passed to |
| 60 | * checking functions of each errata. |
| 61 | */ |
| 62 | report_errata ERRATA_DSU_936184, cortex_a65, dsu_936184 |
| 63 | |
| 64 | ldp x8, x30, [sp], #16 |
| 65 | ret |
| 66 | endfunc cortex_a65_errata_report |
| 67 | #endif |
| 68 | |
| 69 | .section .rodata.cortex_a65_regs, "aS" |
| 70 | cortex_a65_regs: /* The ascii list of register names to be reported */ |
| 71 | .asciz "cpuectlr_el1", "" |
| 72 | |
| 73 | func cortex_a65_cpu_reg_dump |
| 74 | adr x6, cortex_a65_regs |
| 75 | mrs x8, CORTEX_A65_ECTLR_EL1 |
| 76 | ret |
| 77 | endfunc cortex_a65_cpu_reg_dump |
| 78 | |
| 79 | declare_cpu_ops cortex_a65, CORTEX_A65_MIDR, \ |
| 80 | cortex_a65_reset_func, \ |
| 81 | cortex_a65_cpu_pwr_dwn |