Patrick Georgi | ea063cb | 2020-05-08 19:28:13 +0200 | [diff] [blame] | 1 | /* parser generator for flashmap descriptor language */ |
Patrick Georgi | 7333a11 | 2020-05-08 20:48:04 +0200 | [diff] [blame] | 2 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 3 | |
| 4 | %{ |
| 5 | #include "fmd_scanner.h" |
Sol Boucher | b974081 | 2015-03-18 10:13:48 -0700 | [diff] [blame] | 6 | #include "common.h" |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 7 | |
| 8 | #include <stdlib.h> |
| 9 | |
| 10 | struct flashmap_descriptor *res = NULL; |
| 11 | %} |
| 12 | |
| 13 | %union { |
| 14 | unsigned intval; |
| 15 | char *strval; |
| 16 | struct unsigned_option maybe_intval; |
| 17 | struct flashmap_descriptor *region_ptr; |
Hung-Te Lin | 9497fcb | 2019-03-04 14:28:37 +0800 | [diff] [blame] | 18 | union flashmap_flags flags; |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 19 | struct descriptor_list region_listhdr; |
| 20 | } |
| 21 | |
| 22 | %code requires { |
| 23 | #include "fmd.h" |
| 24 | #include "option.h" |
| 25 | |
| 26 | #include <stdbool.h> |
| 27 | |
| 28 | struct descriptor_node { |
| 29 | struct flashmap_descriptor *val; |
| 30 | struct descriptor_node *next; |
| 31 | }; |
| 32 | |
| 33 | struct descriptor_list { |
| 34 | size_t len; |
| 35 | struct descriptor_node *head; |
| 36 | struct descriptor_node *tail; |
| 37 | }; |
| 38 | |
| 39 | extern struct flashmap_descriptor *res; |
| 40 | |
Hung-Te Lin | 9497fcb | 2019-03-04 14:28:37 +0800 | [diff] [blame] | 41 | struct flashmap_descriptor *parse_descriptor( |
| 42 | char *name, union flashmap_flags flags, struct unsigned_option offset, |
| 43 | struct unsigned_option size, struct descriptor_list children); |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 44 | void yyerror(const char *s); |
| 45 | } |
| 46 | |
| 47 | %token <intval> INTEGER |
| 48 | %token OCTAL |
| 49 | %token <strval> STRING |
Hung-Te Lin | 9497fcb | 2019-03-04 14:28:37 +0800 | [diff] [blame] | 50 | %token FLAG_CBFS |
Hung-Te Lin | 49a4450 | 2019-03-04 15:41:09 +0800 | [diff] [blame] | 51 | %token FLAG_PRESERVE |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 52 | |
| 53 | %type <region_ptr> flash_region |
| 54 | %type <strval> region_name |
Hung-Te Lin | 9497fcb | 2019-03-04 14:28:37 +0800 | [diff] [blame] | 55 | %type <flags> region_flags_opt |
| 56 | %type <flags> region_flags |
| 57 | %type <flags> region_flag |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 58 | %type <maybe_intval> region_offset_opt |
| 59 | %type <maybe_intval> region_offset |
| 60 | %type <maybe_intval> region_size_opt |
| 61 | %type <maybe_intval> region_size |
| 62 | %type <region_listhdr> region_list_opt |
| 63 | %type <region_listhdr> region_list |
| 64 | %type <region_listhdr> region_list_entries |
| 65 | |
| 66 | %% |
| 67 | |
| 68 | flash_chip: region_name region_offset_opt region_size region_list |
| 69 | { |
Hung-Te Lin | 9497fcb | 2019-03-04 14:28:37 +0800 | [diff] [blame] | 70 | union flashmap_flags flags = { .v=0 }; |
| 71 | if (!(res = parse_descriptor($1, flags, $2, $3, $4))) |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 72 | YYABORT; |
| 73 | }; |
Hung-Te Lin | 9497fcb | 2019-03-04 14:28:37 +0800 | [diff] [blame] | 74 | flash_region: region_name region_flags_opt region_offset_opt region_size_opt |
| 75 | region_list_opt |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 76 | { |
Hung-Te Lin | 9497fcb | 2019-03-04 14:28:37 +0800 | [diff] [blame] | 77 | struct flashmap_descriptor *node = parse_descriptor($1, $2, $3, $4, $5); |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 78 | if (!node) |
| 79 | YYABORT; |
| 80 | |
Hung-Te Lin | 9497fcb | 2019-03-04 14:28:37 +0800 | [diff] [blame] | 81 | if (node->flags.f.cbfs && !fmd_process_flag_cbfs(node)) { |
| 82 | ERROR("Section '%s' cannot have flag 'CBFS''\n", node->name); |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 83 | YYABORT; |
| 84 | } |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 85 | |
| 86 | $$ = node; |
| 87 | }; |
| 88 | region_name: STRING |
| 89 | { |
| 90 | if (!$1) { |
Sol Boucher | b974081 | 2015-03-18 10:13:48 -0700 | [diff] [blame] | 91 | perror("E: While allocating section name"); |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 92 | YYABORT; |
| 93 | } |
| 94 | }; |
Hung-Te Lin | 9497fcb | 2019-03-04 14:28:37 +0800 | [diff] [blame] | 95 | region_flags_opt: { $$ = (union flashmap_flags){ .v=0 }; } |
| 96 | | '(' region_flags ')' { $$ = $2; }; |
| 97 | region_flags: region_flag | region_flag region_flags { $$.v = $1.v | $2.v; }; |
| 98 | region_flag: FLAG_CBFS { $$.v = 0; $$.f.cbfs = 1; }; |
Hung-Te Lin | 49a4450 | 2019-03-04 15:41:09 +0800 | [diff] [blame] | 99 | region_flag: FLAG_PRESERVE { $$.v = 0; $$.f.preserve = 1; }; |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 100 | region_offset_opt: { $$ = (struct unsigned_option){false, 0}; } |
| 101 | | region_offset; |
| 102 | region_offset: '@' INTEGER { $$ = (struct unsigned_option){true, $2}; }; |
| 103 | region_size_opt: { $$ = (struct unsigned_option){false, 0}; } |
| 104 | | region_size; |
| 105 | region_size: INTEGER { $$ = (struct unsigned_option){true, $1}; }; |
| 106 | region_list_opt: |
| 107 | { |
| 108 | $$ = (struct descriptor_list) |
| 109 | {.len = 0, .head = NULL, .tail = NULL}; |
| 110 | } |
| 111 | | region_list; |
| 112 | region_list: '{' region_list_entries '}' { $$ = $2; }; |
| 113 | region_list_entries: flash_region |
| 114 | { |
| 115 | struct descriptor_node *node = malloc(sizeof(*node)); |
| 116 | if (!node) { |
Sol Boucher | b974081 | 2015-03-18 10:13:48 -0700 | [diff] [blame] | 117 | perror("E: While allocating linked list node"); |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 118 | YYABORT; |
| 119 | } |
| 120 | node->val = $1; |
| 121 | node->next = NULL; |
| 122 | $$ = (struct descriptor_list){.len = 1, .head = node, .tail = node}; |
| 123 | } |
| 124 | | region_list_entries flash_region |
| 125 | { |
| 126 | struct descriptor_node *node = malloc(sizeof(*node)); |
| 127 | if (!node) { |
Sol Boucher | b974081 | 2015-03-18 10:13:48 -0700 | [diff] [blame] | 128 | perror("E: While allocating linked list node"); |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 129 | YYABORT; |
| 130 | } |
| 131 | node->val = $2; |
| 132 | node->next = NULL; |
| 133 | |
| 134 | $1.tail->next = node; |
| 135 | $$ = (struct descriptor_list) |
| 136 | {.len = $1.len + 1, .head = $1.head, .tail = node}; |
| 137 | }; |
| 138 | |
| 139 | %% |
| 140 | |
Hung-Te Lin | 9497fcb | 2019-03-04 14:28:37 +0800 | [diff] [blame] | 141 | struct flashmap_descriptor *parse_descriptor( |
| 142 | char *name, union flashmap_flags flags, struct unsigned_option offset, |
| 143 | struct unsigned_option size, struct descriptor_list children) |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 144 | { |
| 145 | struct flashmap_descriptor *region = malloc(sizeof(*region)); |
| 146 | if (!region) { |
Sol Boucher | b974081 | 2015-03-18 10:13:48 -0700 | [diff] [blame] | 147 | perror("E: While allocating descriptor section"); |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 148 | return NULL; |
| 149 | } |
| 150 | region->name = name; |
Hung-Te Lin | 9497fcb | 2019-03-04 14:28:37 +0800 | [diff] [blame] | 151 | region->flags = flags; |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 152 | region->offset_known = offset.val_known; |
| 153 | region->offset = offset.val; |
| 154 | region->size_known = size.val_known; |
| 155 | region->size = size.val; |
| 156 | region->list_len = children.len; |
| 157 | if (region->list_len) { |
| 158 | region->list = malloc(region->list_len * sizeof(*region->list)); |
| 159 | if (!region->list) { |
Sol Boucher | b974081 | 2015-03-18 10:13:48 -0700 | [diff] [blame] | 160 | perror("E: While allocating node children array"); |
Sol Boucher | 69b88bf | 2015-02-26 11:47:19 -0800 | [diff] [blame] | 161 | return NULL; |
| 162 | } |
| 163 | struct descriptor_node *cur_node = children.head; |
| 164 | for (unsigned idx = 0; idx < region->list_len; ++idx) { |
| 165 | region->list[idx] = cur_node->val; |
| 166 | |
| 167 | struct descriptor_node *next_node = cur_node->next; |
| 168 | free(cur_node); |
| 169 | cur_node = next_node; |
| 170 | } |
| 171 | } else { |
| 172 | region->list = NULL; |
| 173 | } |
| 174 | return region; |
| 175 | } |
| 176 | |
| 177 | void yyerror(const char *s) |
| 178 | { |
| 179 | fprintf(stderr, "%s\n", s); |
| 180 | } |