diff options
Diffstat (limited to 'util/flashrom/lbtable.c')
-rw-r--r-- | util/flashrom/lbtable.c | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/util/flashrom/lbtable.c b/util/flashrom/lbtable.c deleted file mode 100644 index 1cca964c22..0000000000 --- a/util/flashrom/lbtable.c +++ /dev/null @@ -1,218 +0,0 @@ -/* - * This file is part of the flashrom project. - * - * Copyright (C) 2002 Steven James <pyro@linuxlabs.com> - * Copyright (C) 2002 Linux Networx - * (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx) - * Copyright (C) 2006-2007 coresystems GmbH - * (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH) - * - * 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 <stdio.h> -#include <stdint.h> -#include <stdlib.h> -#include <fcntl.h> -#include <unistd.h> -#include <sys/types.h> -#include <string.h> -#include <errno.h> -#include <sys/mman.h> -#include "flash.h" -#include "linuxbios_tables.h" - -char *lb_part = NULL, *lb_vendor = NULL; - -static unsigned long compute_checksum(void *addr, unsigned long length) -{ - uint8_t *ptr; - volatile union { - uint8_t byte[2]; - uint16_t word; - } value; - unsigned long sum; - unsigned long i; - - /* In the most straight forward way possible, - * compute an ip style checksum. - */ - sum = 0; - ptr = addr; - for (i = 0; i < length; i++) { - unsigned long value; - value = ptr[i]; - if (i & 1) { - value <<= 8; - } - /* Add the new value */ - sum += value; - /* Wrap around the carry */ - if (sum > 0xFFFF) { - sum = (sum + (sum >> 16)) & 0xFFFF; - } - } - value.byte[0] = sum & 0xff; - value.byte[1] = (sum >> 8) & 0xff; - - return (~value.word) & 0xFFFF; -} - -#define for_each_lbrec(head, rec) \ - for(rec = (struct lb_record *)(((char *)head) + sizeof(*head)); \ - (((char *)rec) < (((char *)head) + sizeof(*head) + head->table_bytes)) && \ - (rec->size >= 1) && \ - ((((char *)rec) + rec->size) <= (((char *)head) + sizeof(*head) + head->table_bytes)); \ - rec = (struct lb_record *)(((char *)rec) + rec->size)) - -static int count_lb_records(struct lb_header *head) -{ - struct lb_record *rec; - int count; - - count = 0; - for_each_lbrec(head, rec) { - count++; - } - - return count; -} - -static struct lb_header *find_lb_table(void *base, unsigned long start, - unsigned long end) -{ - unsigned long addr; - - /* For now be stupid.... */ - for (addr = start; addr < end; addr += 16) { - struct lb_header *head = - (struct lb_header *)(((char *)base) + addr); - struct lb_record *recs = - (struct lb_record *)(((char *)base) + addr + sizeof(*head)); - if (memcmp(head->signature, "LBIO", 4) != 0) - continue; - printf_debug("Found canidate at: %08lx-%08lx\n", - addr, addr + head->table_bytes); - if (head->header_bytes != sizeof(*head)) { - fprintf(stderr, "Header bytes of %d are incorrect.\n", - head->header_bytes); - continue; - } - if (count_lb_records(head) != head->table_entries) { - fprintf(stderr, "Bad record count: %d.\n", - head->table_entries); - continue; - } - if (compute_checksum((uint8_t *) head, sizeof(*head)) != 0) { - fprintf(stderr, "Bad header checksum.\n"); - continue; - } - if (compute_checksum(recs, head->table_bytes) - != head->table_checksum) { - fprintf(stderr, "Bad table checksum: %04x.\n", - head->table_checksum); - continue; - } - fprintf(stdout, "Found coreboot table at 0x%08lx.\n", addr); - return head; - - }; - - return 0; -} - -static void find_mainboard(struct lb_record *ptr, unsigned long addr) -{ - struct lb_mainboard *rec; - int max_size; - char vendor[256], part[256]; - - rec = (struct lb_mainboard *)ptr; - max_size = rec->size - sizeof(*rec); - printf("Vendor ID: %.*s, part ID: %.*s\n", - max_size - rec->vendor_idx, - rec->strings + rec->vendor_idx, - max_size - rec->part_number_idx, - rec->strings + rec->part_number_idx); - snprintf(vendor, 255, "%.*s", max_size - rec->vendor_idx, - rec->strings + rec->vendor_idx); - snprintf(part, 255, "%.*s", max_size - rec->part_number_idx, - rec->strings + rec->part_number_idx); - - if (lb_part) { - printf("Overwritten by command line, vendor ID: %s, part ID: %s.\n", lb_vendor, lb_part); - } else { - lb_part = strdup(part); - lb_vendor = strdup(vendor); - } -} - -static struct lb_record *next_record(struct lb_record *rec) -{ - return (struct lb_record *)(((char *)rec) + rec->size); -} - -static void search_lb_records(struct lb_record *rec, struct lb_record *last, - unsigned long addr) -{ - struct lb_record *next; - int count; - count = 0; - - for (next = next_record(rec); (rec < last) && (next <= last); - rec = next, addr += rec->size) { - next = next_record(rec); - count++; - if (rec->tag == LB_TAG_MAINBOARD) { - find_mainboard(rec, addr); - break; - } - } -} - -int coreboot_init(void) -{ - uint8_t *low_1MB; - struct lb_header *lb_table; - struct lb_record *rec, *last; - - low_1MB = mmap(0, 1024 * 1024, PROT_READ, MAP_SHARED, fd_mem, - 0x00000000); - if (low_1MB == MAP_FAILED) { - perror("Can't mmap memory using " MEM_DEV); - exit(-2); - } - lb_table = 0; - if (!lb_table) - lb_table = find_lb_table(low_1MB, 0x00000, 0x1000); - if (!lb_table) - lb_table = find_lb_table(low_1MB, 0xf0000, 1024 * 1024); - if (lb_table) { - unsigned long addr; - addr = ((char *)lb_table) - ((char *)low_1MB); - printf_debug("Coreboot table found at %p.\n", lb_table); - rec = (struct lb_record *)(((char *)lb_table) + lb_table->header_bytes); - last = (struct lb_record *)(((char *)rec) + lb_table->table_bytes); - printf_debug("Coreboot header(%d) checksum: %04x table(%d) checksum: %04x entries: %d\n", - lb_table->header_bytes, lb_table->header_checksum, - lb_table->table_bytes, lb_table->table_checksum, - lb_table->table_entries); - search_lb_records(rec, last, addr + lb_table->header_bytes); - } else { - printf("No coreboot table found.\n"); - return -1; - } - - return 0; -} |