Uwe Hermann | 941c1fd | 2009-07-07 15:10:13 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreinfo project. |
| 3 | * |
| 4 | * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> |
| 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 as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 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. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | #include "coreinfo.h" |
| 21 | #include "arch/endian.h" |
| 22 | |
| 23 | #ifdef CONFIG_MODULE_CBFS |
| 24 | |
| 25 | #define ALIGN(_v, _a) (((_v) + ((_a) - 1)) & ~((_a) - 1)) |
| 26 | |
| 27 | #define HEADER_MAGIC 0x4F524243 |
| 28 | #define HEADER_ADDR 0xfffffffc |
| 29 | #define LARCHIVE_MAGIC 0x455649484352414cLL /* "LARCHIVE" */ |
| 30 | |
| 31 | #define COMPONENT_DELETED 0x00 |
| 32 | #define COMPONENT_STAGE 0x10 |
| 33 | #define COMPONENT_PAYLOAD 0x20 |
| 34 | #define COMPONENT_OPTIONROM 0x30 |
| 35 | #define COMPONENT_NULL 0xffffffff |
| 36 | |
| 37 | struct cbheader { |
| 38 | u32 magic; |
| 39 | u32 version; |
| 40 | u32 romsize; |
| 41 | u32 bootblocksize; |
| 42 | u32 align; |
| 43 | u32 offset; |
| 44 | u32 pad[2]; |
| 45 | } __attribute__ ((packed)); |
| 46 | |
| 47 | struct cbfile { |
| 48 | u64 magic; |
| 49 | u32 len; |
| 50 | u32 type; |
| 51 | u32 checksum; |
| 52 | u32 offset; |
| 53 | char filename[0]; |
| 54 | } __attribute__ ((packed)); |
| 55 | |
| 56 | static int filecount = 0, selected = 0; |
| 57 | static char **filenames; |
| 58 | static struct cbheader *header = NULL; |
| 59 | |
| 60 | static struct cbfile *getfile(struct cbfile *f) |
| 61 | { |
| 62 | while (1) { |
| 63 | if (f < (struct cbfile *)(0xffffffff - ntohl(header->romsize))) |
| 64 | return NULL; |
| 65 | if (f->magic == 0) |
| 66 | return NULL; |
| 67 | if (f->magic == LARCHIVE_MAGIC) |
| 68 | return f; |
| 69 | f = (void *)f + ntohl(header->align); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | static struct cbfile *firstfile(void) |
| 74 | { |
| 75 | return getfile((void *)(0 - ntohl(header->romsize) + |
| 76 | ntohl(header->offset))); |
| 77 | } |
| 78 | |
| 79 | static struct cbfile *nextfile(struct cbfile *f) |
| 80 | { |
| 81 | f = (void *)f + ALIGN(ntohl(f->len) + ntohl(f->offset), |
| 82 | ntohl(header->align)); |
| 83 | return getfile(f); |
| 84 | } |
| 85 | |
| 86 | static struct cbfile *findfile(const char *filename) |
| 87 | { |
| 88 | struct cbfile *f; |
| 89 | for (f = firstfile(); f; f = nextfile(f)) { |
| 90 | if (strcmp(filename, f->filename) == 0) |
| 91 | return f; |
| 92 | } |
| 93 | return NULL; |
| 94 | } |
| 95 | |
| 96 | static int cbfs_module_init(void) |
| 97 | { |
| 98 | struct cbfile *f; |
| 99 | int index = 0; |
| 100 | |
| 101 | header = *(void **)HEADER_ADDR; |
| 102 | if (header->magic != ntohl(HEADER_MAGIC)) { |
| 103 | header = NULL; |
| 104 | return 0; |
| 105 | } |
| 106 | |
| 107 | for (f = firstfile(); f; f = nextfile(f)) |
| 108 | filecount++; |
| 109 | |
| 110 | filenames = malloc(filecount * sizeof(char *)); |
| 111 | if (filenames == NULL) |
| 112 | return 0; |
| 113 | |
| 114 | for (f = firstfile(); f; f = nextfile(f)) |
| 115 | filenames[index++] = strdup((const char *)f->filename); |
| 116 | |
| 117 | return 0; |
| 118 | } |
| 119 | |
| 120 | static int cbfs_module_redraw(WINDOW * win) |
| 121 | { |
| 122 | struct cbfile *f; |
| 123 | int i, row = 2; |
| 124 | |
| 125 | print_module_title(win, "CBFS Listing"); |
| 126 | |
| 127 | if (!header) { |
| 128 | mvwprintw(win, 11, 61 / 2, "Bad or missing CBFS header"); |
| 129 | return 0; |
| 130 | } |
| 131 | |
| 132 | /* Draw a line down the middle. */ |
| 133 | for (i = 2; i < 21; i++) |
| 134 | mvwaddch(win, i, 30, ACS_VLINE); |
| 135 | |
| 136 | /* Draw the names down the left side. */ |
| 137 | for (i = 0; i < filecount; i++) { |
| 138 | if (i == selected) |
| 139 | wattrset(win, COLOR_PAIR(3) | A_BOLD); |
| 140 | else |
| 141 | wattrset(win, COLOR_PAIR(2)); |
| 142 | if (i == filecount - 1) |
| 143 | mvwprintw(win, 2 + i, 1, "<free space>"); |
| 144 | else |
| 145 | mvwprintw(win, 2 + i, 1, "%.25s", filenames[i]); |
| 146 | } |
| 147 | |
| 148 | f = findfile(filenames[selected]); |
| 149 | if (!f) { |
| 150 | mvwprintw(win, 11, 32, "ERROR: CBFS component not found"); |
| 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | wattrset(win, COLOR_PAIR(2)); |
| 155 | |
| 156 | /* mvwprintw(win, row++, 32, "Offset: 0x%x", f->offset); *//* FIXME */ |
| 157 | mvwprintw(win, row, 32, "Type: "); |
| 158 | switch (ntohl(f->type)) { |
| 159 | case COMPONENT_STAGE: |
| 160 | mvwprintw(win, row++, 38, "stage"); |
| 161 | break; |
| 162 | case COMPONENT_PAYLOAD: |
| 163 | mvwprintw(win, row++, 38, "payload"); |
| 164 | break; |
| 165 | case COMPONENT_OPTIONROM: |
| 166 | mvwprintw(win, row++, 38, "optionrom"); |
| 167 | break; |
| 168 | case COMPONENT_NULL: |
| 169 | mvwprintw(win, row++, 38, "free"); |
| 170 | break; |
| 171 | case COMPONENT_DELETED: |
| 172 | mvwprintw(win, row++, 38, "deleted"); |
| 173 | break; |
| 174 | default: |
| 175 | mvwprintw(win, row++, 38, "Unknown (0x%x)", ntohl(f->type)); |
| 176 | break; |
| 177 | } |
| 178 | mvwprintw(win, row++, 32, "Size: %d", ntohl(f->len)); |
| 179 | mvwprintw(win, row++, 32, "Checksum: 0x%x", ntohl(f->checksum)); |
| 180 | |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | static int cbfs_module_handle(int key) |
| 185 | { |
| 186 | int ret = 0; |
| 187 | |
| 188 | if (filecount == 0) |
| 189 | return 0; |
| 190 | |
| 191 | switch (key) { |
| 192 | case KEY_DOWN: |
| 193 | if (selected + 1 < filecount) { |
| 194 | selected++; |
| 195 | ret = 1; |
| 196 | } |
| 197 | break; |
| 198 | case KEY_UP: |
| 199 | if (selected > 0) { |
| 200 | selected--; |
| 201 | ret = 1; |
| 202 | } |
| 203 | break; |
| 204 | } |
| 205 | |
| 206 | return ret; |
| 207 | } |
| 208 | |
| 209 | struct coreinfo_module cbfs_module = { |
| 210 | .name = "CBFS", |
| 211 | .init = cbfs_module_init, |
| 212 | .redraw = cbfs_module_redraw, |
| 213 | .handle = cbfs_module_handle |
| 214 | }; |
| 215 | |
| 216 | #else |
| 217 | |
| 218 | struct coreinfo_module cbfs_module = { |
| 219 | }; |
| 220 | |
| 221 | #endif |