/* * This file is part of the coreinfo project. * * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include "coreinfo.h" #include "endian.h" #ifdef CONFIG_MODULE_CBFS #define ALIGN(_v, _a) (((_v) + ((_a) - 1)) & ~((_a) - 1)) #define HEADER_MAGIC 0x4F524243 #define HEADER_ADDR 0xfffffffc #define LARCHIVE_MAGIC 0x455649484352414cLL /* "LARCHIVE" */ #define COMPONENT_DELETED 0x00 #define COMPONENT_STAGE 0x10 #define COMPONENT_PAYLOAD 0x20 #define COMPONENT_OPTIONROM 0x30 #define COMPONENT_NULL 0xffffffff struct cbheader { u32 magic; u32 version; u32 romsize; u32 bootblocksize; u32 align; u32 offset; u32 architecture; u32 pad[1]; } __attribute__ ((packed)); struct cbfile { u64 magic; u32 len; u32 type; u32 checksum; u32 offset; char filename[0]; } __attribute__ ((packed)); static int filecount = 0, selected = 0; static char **filenames; static struct cbheader *header = NULL; static struct cbfile *getfile(struct cbfile *f) { while (1) { if (f < (struct cbfile *)(0xffffffff - ntohl(header->romsize))) return NULL; if (f->magic == 0) return NULL; if (f->magic == LARCHIVE_MAGIC) return f; f = (void *)f + ntohl(header->align); } } static struct cbfile *firstfile(void) { return getfile((void *)(0 - ntohl(header->romsize) + ntohl(header->offset))); } static struct cbfile *nextfile(struct cbfile *f) { f = (void *)f + ALIGN(ntohl(f->len) + ntohl(f->offset), ntohl(header->align)); return getfile(f); } static struct cbfile *findfile(const char *filename) { struct cbfile *f; for (f = firstfile(); f; f = nextfile(f)) { if (strcmp(filename, f->filename) == 0) return f; } return NULL; } static int cbfs_module_init(void) { struct cbfile *f; int index = 0; header = *(void **)HEADER_ADDR; if (header->magic != ntohl(HEADER_MAGIC)) { header = NULL; return 0; } for (f = firstfile(); f; f = nextfile(f)) filecount++; filenames = malloc(filecount * sizeof(char *)); if (filenames == NULL) return 0; for (f = firstfile(); f; f = nextfile(f)) filenames[index++] = strdup((const char *)f->filename); return 0; } static int cbfs_module_redraw(WINDOW * win) { struct cbfile *f; int i, row = 2; print_module_title(win, "CBFS Listing"); if (!header) { mvwprintw(win, 11, 61 / 2, "Bad or missing CBFS header"); return 0; } /* Draw a line down the middle. */ for (i = 2; i < 21; i++) mvwaddch(win, i, 30, ACS_VLINE); /* Draw the names down the left side. */ for (i = 0; i < filecount; i++) { if (i == selected) wattrset(win, COLOR_PAIR(3) | A_BOLD); else wattrset(win, COLOR_PAIR(2)); if (i == filecount - 1) mvwprintw(win, 2 + i, 1, "<free space>"); else mvwprintw(win, 2 + i, 1, "%.25s", filenames[i]); } f = findfile(filenames[selected]); if (!f) { mvwprintw(win, 11, 32, "ERROR: CBFS component not found"); return 0; } wattrset(win, COLOR_PAIR(2)); /* mvwprintw(win, row++, 32, "Offset: 0x%x", f->offset); *//* FIXME */ mvwprintw(win, row, 32, "Type: "); switch (ntohl(f->type)) { case COMPONENT_STAGE: mvwprintw(win, row++, 38, "stage"); break; case COMPONENT_PAYLOAD: mvwprintw(win, row++, 38, "payload"); break; case COMPONENT_OPTIONROM: mvwprintw(win, row++, 38, "optionrom"); break; case COMPONENT_NULL: mvwprintw(win, row++, 38, "free"); break; case COMPONENT_DELETED: mvwprintw(win, row++, 38, "deleted"); break; default: mvwprintw(win, row++, 38, "Unknown (0x%x)", ntohl(f->type)); break; } mvwprintw(win, row++, 32, "Size: %d", ntohl(f->len)); mvwprintw(win, row++, 32, "Checksum: 0x%x", ntohl(f->checksum)); return 0; } static int cbfs_module_handle(int key) { int ret = 0; if (filecount == 0) return 0; switch (key) { case KEY_DOWN: if (selected + 1 < filecount) { selected++; ret = 1; } break; case KEY_UP: if (selected > 0) { selected--; ret = 1; } break; } return ret; } struct coreinfo_module cbfs_module = { .name = "CBFS", .init = cbfs_module_init, .redraw = cbfs_module_redraw, .handle = cbfs_module_handle }; #else struct coreinfo_module cbfs_module = { }; #endif