| Juan Pablo Conde | 16d3108 | 2023-09-19 14:57:29 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2023, 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 <travis.h> |
| 11 | #include <cpu_macros.S> |
| 12 | #include <plat_macros.S> |
| 13 | |
| 14 | /* Hardware handled coherency */ |
| 15 | #if HW_ASSISTED_COHERENCY == 0 |
| 16 | #error "Travis must be compiled with HW_ASSISTED_COHERENCY enabled" |
| 17 | #endif |
| 18 | |
| 19 | /* 64-bit only core */ |
| 20 | #if CTX_INCLUDE_AARCH32_REGS == 1 |
| 21 | #error "Travis supports only AArch64. Compile with CTX_INCLUDE_AARCH32_REGS=0" |
| 22 | #endif |
| 23 | |
| 24 | cpu_reset_func_start travis |
| 25 | /* ---------------------------------------------------- |
| 26 | * Disable speculative loads |
| 27 | * ---------------------------------------------------- |
| 28 | */ |
| 29 | msr SSBS, xzr |
| 30 | cpu_reset_func_end travis |
| 31 | |
| 32 | func travis_core_pwr_dwn |
| 33 | #if ENABLE_SME_FOR_NS |
| 34 | /* --------------------------------------------------- |
| 35 | * Disable SME if enabled and supported |
| 36 | * --------------------------------------------------- |
| 37 | */ |
| 38 | mrs x0, ID_AA64PFR1_EL1 |
| 39 | ubfx x0, x0, #ID_AA64PFR1_EL1_SME_SHIFT, \ |
| 40 | #ID_AA64PFR1_EL1_SME_WIDTH |
| 41 | cmp x0, #ID_AA64PFR1_EL1_SME_NOT_SUPPORTED |
| 42 | b.eq 1f |
| 43 | msr TRAVIS_SVCRSM, xzr |
| 44 | msr TRAVIS_SVCRZA, xzr |
| 45 | 1: |
| 46 | #endif |
| 47 | /* --------------------------------------------------- |
| 48 | * Enable CPU power down bit in power control register |
| 49 | * --------------------------------------------------- |
| 50 | */ |
| 51 | sysreg_bit_set TRAVIS_IMP_CPUPWRCTLR_EL1, \ |
| 52 | TRAVIS_IMP_CPUPWRCTLR_EL1_CORE_PWRDN_EN_BIT |
| 53 | isb |
| 54 | ret |
| 55 | endfunc travis_core_pwr_dwn |
| 56 | |
| 57 | errata_report_shim travis |
| 58 | |
| 59 | .section .rodata.travis_regs, "aS" |
| 60 | travis_regs: /* The ASCII list of register names to be reported */ |
| 61 | .asciz "cpuectlr_el1", "" |
| 62 | |
| 63 | func travis_cpu_reg_dump |
| 64 | adr x6, travis_regs |
| 65 | mrs x8, TRAVIS_IMP_CPUECTLR_EL1 |
| 66 | ret |
| 67 | endfunc travis_cpu_reg_dump |
| 68 | |
| 69 | declare_cpu_ops travis, TRAVIS_MIDR, \ |
| 70 | travis_reset_func, \ |
| 71 | travis_core_pwr_dwn |