| Arvind Ram Prakash | 05b4763 | 2024-05-22 15:24:00 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2024, Arm Limited. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <arch.h> |
| 8 | #include <arch_features.h> |
| 9 | #include <arch_helpers.h> |
| 10 | #include <lib/extensions/debug_v8p9.h> |
| 11 | |
| 12 | void debugv8p9_extended_bp_wp_enable(cpu_context_t *ctx) |
| 13 | { |
| 14 | el3_state_t *state = get_el3state_ctx(ctx); |
| 15 | u_register_t mdcr_el3_val = read_ctx_reg(state, CTX_MDCR_EL3); |
| 16 | |
| 17 | /* When FEAT_Debugv8p9 is implemented: |
| 18 | * |
| 19 | * MDCR_EL3.EBWE: Set to 0b1 |
| 20 | * Enables use of additional breakpoints or watchpoints, |
| 21 | * and disables trap to EL3 on accesses to debug register. |
| 22 | */ |
| 23 | |
| 24 | mdcr_el3_val |= MDCR_EBWE_BIT; |
| 25 | write_ctx_reg(state, CTX_MDCR_EL3, mdcr_el3_val); |
| 26 | } |