| Juan Pablo Conde | a0594ad | 2023-09-19 14:57:29 -0500 | [diff] [blame] | 1 | /* |
| Boyan Karatotev | 2bef6ba | 2025-01-21 11:41:46 +0000 | [diff] [blame] | 2 | * Copyright (c) 2023-2025, Arm Limited. All rights reserved. |
| Juan Pablo Conde | a0594ad | 2023-09-19 14:57:29 -0500 | [diff] [blame] | 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 | |
| Boyan Karatotev | 3bfa5a0 | 2025-01-22 13:54:43 +0000 | [diff] [blame] | 24 | cpu_reset_prologue travis |
| 25 | |
| Juan Pablo Conde | a0594ad | 2023-09-19 14:57:29 -0500 | [diff] [blame] | 26 | cpu_reset_func_start travis |
| 27 | /* ---------------------------------------------------- |
| 28 | * Disable speculative loads |
| 29 | * ---------------------------------------------------- |
| 30 | */ |
| 31 | msr SSBS, xzr |
| Boyan Karatotev | d2ab213 | 2024-10-16 11:36:29 +0100 | [diff] [blame] | 32 | /* model bug: not cleared on reset */ |
| 33 | sysreg_bit_clear TRAVIS_IMP_CPUPWRCTLR_EL1, \ |
| 34 | TRAVIS_IMP_CPUPWRCTLR_EL1_CORE_PWRDN_EN_BIT |
| Juan Pablo Conde | a0594ad | 2023-09-19 14:57:29 -0500 | [diff] [blame] | 35 | cpu_reset_func_end travis |
| 36 | |
| 37 | func travis_core_pwr_dwn |
| 38 | #if ENABLE_SME_FOR_NS |
| 39 | /* --------------------------------------------------- |
| 40 | * Disable SME if enabled and supported |
| 41 | * --------------------------------------------------- |
| 42 | */ |
| 43 | mrs x0, ID_AA64PFR1_EL1 |
| 44 | ubfx x0, x0, #ID_AA64PFR1_EL1_SME_SHIFT, \ |
| 45 | #ID_AA64PFR1_EL1_SME_WIDTH |
| Sona Mathew | 9e51f15 | 2024-03-11 15:58:15 -0500 | [diff] [blame] | 46 | cmp x0, #SME_NOT_IMPLEMENTED |
| Juan Pablo Conde | a0594ad | 2023-09-19 14:57:29 -0500 | [diff] [blame] | 47 | b.eq 1f |
| 48 | msr TRAVIS_SVCRSM, xzr |
| 49 | msr TRAVIS_SVCRZA, xzr |
| 50 | 1: |
| 51 | #endif |
| 52 | /* --------------------------------------------------- |
| Boyan Karatotev | 2bef6ba | 2025-01-21 11:41:46 +0000 | [diff] [blame] | 53 | * Flip CPU power down bit in power control register. |
| 54 | * It will be set on powerdown and cleared on wakeup |
| Juan Pablo Conde | a0594ad | 2023-09-19 14:57:29 -0500 | [diff] [blame] | 55 | * --------------------------------------------------- |
| 56 | */ |
| Boyan Karatotev | 2bef6ba | 2025-01-21 11:41:46 +0000 | [diff] [blame] | 57 | sysreg_bit_toggle TRAVIS_IMP_CPUPWRCTLR_EL1, \ |
| Juan Pablo Conde | a0594ad | 2023-09-19 14:57:29 -0500 | [diff] [blame] | 58 | TRAVIS_IMP_CPUPWRCTLR_EL1_CORE_PWRDN_EN_BIT |
| 59 | isb |
| 60 | ret |
| 61 | endfunc travis_core_pwr_dwn |
| 62 | |
| Juan Pablo Conde | a0594ad | 2023-09-19 14:57:29 -0500 | [diff] [blame] | 63 | .section .rodata.travis_regs, "aS" |
| 64 | travis_regs: /* The ASCII list of register names to be reported */ |
| 65 | .asciz "cpuectlr_el1", "" |
| 66 | |
| 67 | func travis_cpu_reg_dump |
| 68 | adr x6, travis_regs |
| 69 | mrs x8, TRAVIS_IMP_CPUECTLR_EL1 |
| 70 | ret |
| 71 | endfunc travis_cpu_reg_dump |
| 72 | |
| 73 | declare_cpu_ops travis, TRAVIS_MIDR, \ |
| 74 | travis_reset_func, \ |
| 75 | travis_core_pwr_dwn |