Uwe Hermann | 7eb845e | 2008-11-02 17:01:06 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the bayou project. |
| 3 | * |
| 4 | * Copyright (C) 2008 Advanced Micro Devices, Inc. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
Uwe Hermann | 7eb845e | 2008-11-02 17:01:06 +0000 | [diff] [blame] | 14 | */ |
| 15 | |
| 16 | #include "bayou.h" |
| 17 | |
| 18 | struct bayoucfg bayoucfg; |
| 19 | |
| 20 | static int add_payload(struct LAR *lar, struct larent *larent) |
| 21 | { |
| 22 | struct payload *payload; |
| 23 | int plen; |
| 24 | u8 *params = NULL; |
| 25 | u8 *fptr; |
| 26 | |
| 27 | if (bayoucfg.n_entries == BAYOU_MAX_ENTRIES) |
| 28 | return -1; |
| 29 | |
| 30 | payload = &bayoucfg.entries[bayoucfg.n_entries]; |
| 31 | |
| 32 | if (strncmp((char *)larent->name, "payload/", 8)) |
| 33 | return -1; |
| 34 | |
| 35 | if (larstat(lar, (const char *)larent->name, &payload->stat)) |
| 36 | return -1; |
| 37 | |
| 38 | /* Make sure the LAR entry is valid. */ |
| 39 | if (!lfverify(lar, (const char *)larent->name)) |
| 40 | return -1; |
| 41 | |
| 42 | /* Get a pointer to the start of the file. */ |
| 43 | fptr = larfptr(lar, (const char *)larent->name); |
| 44 | |
| 45 | if (fptr == NULL) |
| 46 | return -1; |
| 47 | |
| 48 | if (!verify_self(fptr)) |
| 49 | return -1; |
| 50 | |
| 51 | payload->pentry.index = bayoucfg.n_entries; |
| 52 | payload->pentry.parent = 0; |
| 53 | payload->pentry.type = BPT_TYPE_CHOOSER; |
| 54 | payload->pentry.flags = 0; |
| 55 | |
| 56 | plen = self_get_params(fptr, ¶ms); |
| 57 | payload_parse_params(payload, params, plen); |
| 58 | |
| 59 | payload->fptr = fptr; |
| 60 | |
| 61 | bayoucfg.n_entries++; |
| 62 | |
| 63 | return 0; |
| 64 | } |
| 65 | |
| 66 | static int lar_walk_files(struct LAR *lar, |
| 67 | int (*cb) (struct LAR *, struct larent *)) |
| 68 | { |
| 69 | struct larent *larent; |
| 70 | int ret = 0; |
| 71 | |
| 72 | rewindlar(lar); |
| 73 | |
| 74 | while ((larent = readlar(lar)) != NULL) { |
| 75 | if ((ret = cb(lar, larent))) |
| 76 | break; |
| 77 | } |
| 78 | |
| 79 | return ret; |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * If reading the bayou_payload_table fails for some reason, then construct |
| 84 | * a dummy table. All valid payloads in the lar are added as chooser items. |
| 85 | */ |
| 86 | static void build_dummy_table(struct LAR *lar) |
| 87 | { |
| 88 | bayoucfg.timeout = 0xFF; |
| 89 | bayoucfg.n_entries = 0; |
| 90 | |
| 91 | lar_walk_files(lar, add_payload); |
| 92 | } |
| 93 | |
| 94 | int get_configuration(struct LAR *lar) |
| 95 | { |
| 96 | struct larstat stat; |
| 97 | struct bpt_config *bptcfg; |
| 98 | u8 *fptr, *ptr; |
| 99 | int i; |
| 100 | |
| 101 | /* |
| 102 | * If bayou_payload_table doesn't exist, then dummy up |
| 103 | * a table from the LAR contents. |
| 104 | */ |
| 105 | if (larstat(lar, "bayou_payload_table", &stat) || |
| 106 | !lfverify(lar, "bayou_payload_table")) |
| 107 | build_dummy_table(lar); |
| 108 | |
| 109 | /* Open up the BPT and get the creamy goodness within. */ |
| 110 | |
| 111 | fptr = larfptr(lar, "bayou_payload_table"); |
| 112 | |
| 113 | if (fptr == NULL) |
| 114 | build_dummy_table(lar); |
| 115 | |
| 116 | bptcfg = (struct bpt_config *)fptr; |
| 117 | bayoucfg.timeout = bptcfg->timeout; |
| 118 | |
| 119 | bayoucfg.n_entries = bptcfg->entries; |
| 120 | |
| 121 | if (bayoucfg.n_entries > BAYOU_MAX_ENTRIES) { |
| 122 | printf("W: Limiting the number of entries to %d\n", |
| 123 | BAYOU_MAX_ENTRIES); |
| 124 | bayoucfg.n_entries = BAYOU_MAX_ENTRIES; |
| 125 | } |
| 126 | |
| 127 | ptr = fptr + sizeof(struct bpt_config); |
| 128 | |
| 129 | for (i = 0; i < bayoucfg.n_entries; i++) { |
| 130 | struct bpt_pentry *entry = (struct bpt_pentry *)ptr; |
| 131 | struct payload *p = &(bayoucfg.entries[i]); |
| 132 | int plen; |
| 133 | u8 *params = NULL; |
| 134 | |
| 135 | memcpy(&p->pentry, entry, sizeof(struct bpt_pentry)); |
| 136 | |
| 137 | if (entry->type != BPT_TYPE_CHAIN) { |
| 138 | char *lname = (char *)ptr + sizeof(struct bpt_pentry); |
| 139 | |
| 140 | if (larstat(lar, (const char *)lname, &p->stat)) |
| 141 | build_dummy_table(lar); |
| 142 | |
| 143 | if (!lfverify(lar, (const char *)lname)) |
| 144 | build_dummy_table(lar); |
| 145 | |
| 146 | fptr = larfptr(lar, (const char *)lname); |
| 147 | |
| 148 | if (verify_self(fptr)) |
| 149 | p->fptr = fptr; |
| 150 | else |
| 151 | build_dummy_table(lar); |
| 152 | |
| 153 | plen = self_get_params(fptr, ¶ms); |
| 154 | payload_parse_params(p, params, plen); |
| 155 | } |
| 156 | |
| 157 | ptr += sizeof(struct bpt_pentry) + entry->nlen; |
| 158 | } |
| 159 | |
| 160 | return 0; |
| 161 | } |