| Balint Dobszay | d0dbd5e | 2019-12-18 15:28:00 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2019-2020, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | #include <assert.h> |
| 7 | |
| 8 | #include <common/debug.h> |
| 9 | #include <common/fdt_wrappers.h> |
| 10 | #include <libfdt.h> |
| 11 | #include <plat/arm/common/fconf_sdei_getter.h> |
| 12 | |
| 13 | #define PRIVATE_EVENT_NUM(i) private_events[3 * (i)] |
| 14 | #define PRIVATE_EVENT_INTR(i) private_events[3 * (i) + 1] |
| 15 | #define PRIVATE_EVENT_FLAGS(i) private_events[3 * (i) + 2] |
| 16 | |
| 17 | #define SHARED_EVENT_NUM(i) shared_events[3 * (i)] |
| 18 | #define SHARED_EVENT_INTR(i) shared_events[3 * (i) + 1] |
| 19 | #define SHARED_EVENT_FLAGS(i) shared_events[3 * (i) + 2] |
| 20 | |
| 21 | struct sdei_dyn_config_t sdei_dyn_config; |
| 22 | |
| 23 | int fconf_populate_sdei_dyn_config(uintptr_t config) |
| 24 | { |
| 25 | uint32_t i; |
| 26 | int node, err; |
| 27 | uint32_t private_events[PLAT_SDEI_DP_EVENT_MAX_CNT * 3]; |
| 28 | uint32_t shared_events[PLAT_SDEI_DS_EVENT_MAX_CNT * 3]; |
| 29 | |
| 30 | const void *dtb = (void *)config; |
| 31 | |
| 32 | /* Check that the node offset points to compatible property */ |
| 33 | node = fdt_node_offset_by_compatible(dtb, -1, "arm,sdei-1.0"); |
| 34 | if (node < 0) { |
| 35 | ERROR("FCONF: Can't find 'arm,sdei-1.0' compatible node in dtb\n"); |
| 36 | return node; |
| 37 | } |
| 38 | |
| 39 | /* Read number of private mappings */ |
| 40 | err = fdt_read_uint32(dtb, node, "private_event_count", |
| 41 | &sdei_dyn_config.private_ev_cnt); |
| 42 | if (err < 0) { |
| 43 | ERROR("FCONF: Read cell failed for 'private_event_count': %u\n", |
| 44 | sdei_dyn_config.private_ev_cnt); |
| 45 | return err; |
| 46 | } |
| 47 | |
| 48 | /* Check if the value is in range */ |
| 49 | if (sdei_dyn_config.private_ev_cnt > PLAT_SDEI_DP_EVENT_MAX_CNT) { |
| 50 | ERROR("FCONF: Invalid value for 'private_event_count': %u\n", |
| 51 | sdei_dyn_config.private_ev_cnt); |
| 52 | return -1; |
| 53 | } |
| 54 | |
| 55 | /* Read private mappings */ |
| 56 | err = fdt_read_uint32_array(dtb, node, "private_events", |
| 57 | sdei_dyn_config.private_ev_cnt * 3, private_events); |
| 58 | if (err < 0) { |
| 59 | ERROR("FCONF: Read cell failed for 'private_events': %d\n", err); |
| 60 | return err; |
| 61 | } |
| 62 | |
| 63 | /* Move data to fconf struct */ |
| 64 | for (i = 0; i < sdei_dyn_config.private_ev_cnt; i++) { |
| 65 | sdei_dyn_config.private_ev_nums[i] = PRIVATE_EVENT_NUM(i); |
| 66 | sdei_dyn_config.private_ev_intrs[i] = PRIVATE_EVENT_INTR(i); |
| 67 | sdei_dyn_config.private_ev_flags[i] = PRIVATE_EVENT_FLAGS(i); |
| 68 | } |
| 69 | |
| 70 | /* Read number of shared mappings */ |
| 71 | err = fdt_read_uint32(dtb, node, "shared_event_count", |
| 72 | &sdei_dyn_config.shared_ev_cnt); |
| 73 | if (err < 0) { |
| 74 | ERROR("FCONF: Read cell failed for 'shared_event_count'\n"); |
| 75 | return err; |
| 76 | } |
| 77 | |
| 78 | /* Check if the value is in range */ |
| 79 | if (sdei_dyn_config.shared_ev_cnt > PLAT_SDEI_DS_EVENT_MAX_CNT) { |
| 80 | ERROR("FCONF: Invalid value for 'shared_event_count': %u\n", |
| 81 | sdei_dyn_config.shared_ev_cnt); |
| 82 | return -1; |
| 83 | } |
| 84 | |
| 85 | /* Read shared mappings */ |
| 86 | err = fdt_read_uint32_array(dtb, node, "shared_events", |
| 87 | sdei_dyn_config.shared_ev_cnt * 3, shared_events); |
| 88 | if (err < 0) { |
| 89 | ERROR("FCONF: Read cell failed for 'shared_events': %d\n", err); |
| 90 | return err; |
| 91 | } |
| 92 | |
| 93 | /* Move data to fconf struct */ |
| 94 | for (i = 0; i < sdei_dyn_config.shared_ev_cnt; i++) { |
| 95 | sdei_dyn_config.shared_ev_nums[i] = SHARED_EVENT_NUM(i); |
| 96 | sdei_dyn_config.shared_ev_intrs[i] = SHARED_EVENT_INTR(i); |
| 97 | sdei_dyn_config.shared_ev_flags[i] = SHARED_EVENT_FLAGS(i); |
| 98 | } |
| 99 | |
| 100 | return 0; |
| 101 | } |
| 102 | |
| 103 | FCONF_REGISTER_POPULATOR(HW_CONFIG, sdei, fconf_populate_sdei_dyn_config); |