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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2005-2008 coresystems GmbH
* (Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH)
* Copyright (C) 2011-2013 Stefan Tauner
*
* 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include "flash.h"
#include "programmer.h"
#include "layout.h"
struct romentry entries[MAX_ROMLAYOUT];
static struct flashrom_layout layout = { entries, 0 };
/* include_args holds the arguments specified at the command line with -i. They must be processed at some point
* so that desired regions are marked as "included" in the layout. */
static char *include_args[MAX_ROMLAYOUT];
static int num_include_args = 0; /* the number of valid include_args. */
struct flashrom_layout *get_global_layout(void)
{
return &layout;
}
const struct flashrom_layout *get_layout(const struct flashrom_flashctx *const flashctx)
{
if (flashctx->layout && flashctx->layout->num_entries)
return flashctx->layout;
else
return &flashctx->fallback_layout.base;
}
#ifndef __LIBPAYLOAD__
int read_romlayout(const char *name)
{
FILE *romlayout;
char tempstr[256];
int i;
romlayout = fopen(name, "r");
if (!romlayout) {
msg_gerr("ERROR: Could not open ROM layout (%s).\n",
name);
return -1;
}
while (!feof(romlayout)) {
char *tstr1, *tstr2;
if (layout.num_entries >= MAX_ROMLAYOUT) {
msg_gerr("Maximum number of ROM images (%i) in layout "
"file reached.\n", MAX_ROMLAYOUT);
(void)fclose(romlayout);
return 1;
}
if (2 != fscanf(romlayout, "%255s %255s\n", tempstr, layout.entries[layout.num_entries].name))
continue;
#if 0
// fscanf does not like arbitrary comments like that :( later
if (tempstr[0] == '#') {
continue;
}
#endif
tstr1 = strtok(tempstr, ":");
tstr2 = strtok(NULL, ":");
if (!tstr1 || !tstr2) {
msg_gerr("Error parsing layout file. Offending string: \"%s\"\n", tempstr);
(void)fclose(romlayout);
return 1;
}
layout.entries[layout.num_entries].start = strtol(tstr1, (char **)NULL, 16);
layout.entries[layout.num_entries].end = strtol(tstr2, (char **)NULL, 16);
layout.entries[layout.num_entries].included = 0;
layout.num_entries++;
}
for (i = 0; i < layout.num_entries; i++) {
msg_gdbg("romlayout %08x - %08x named %s\n",
layout.entries[i].start,
layout.entries[i].end, layout.entries[i].name);
}
(void)fclose(romlayout);
return 0;
}
#endif
/* returns the index of the entry (or a negative value if it is not found) */
static int find_include_arg(const char *const name)
{
unsigned int i;
for (i = 0; i < num_include_args; i++) {
if (!strcmp(include_args[i], name))
return i;
}
return -1;
}
/* register an include argument (-i) for later processing */
int register_include_arg(char *name)
{
if (num_include_args >= MAX_ROMLAYOUT) {
msg_gerr("Too many regions included (%i).\n", num_include_args);
return 1;
}
if (name == NULL) {
msg_gerr("<NULL> is a bad region name.\n");
return 1;
}
if (find_include_arg(name) != -1) {
msg_gerr("Duplicate region name: \"%s\".\n", name);
return 1;
}
include_args[num_include_args] = name;
num_include_args++;
return 0;
}
/* returns the index of the entry (or a negative value if it is not found) */
static int find_romentry(struct flashrom_layout *const l, char *name)
{
int i;
if (l->num_entries == 0)
return -1;
msg_gspew("Looking for region \"%s\"... ", name);
for (i = 0; i < l->num_entries; i++) {
if (!strcmp(l->entries[i].name, name)) {
l->entries[i].included = 1;
msg_gspew("found.\n");
return i;
}
}
msg_gspew("not found.\n");
return -1;
}
/* process -i arguments
* returns 0 to indicate success, >0 to indicate failure
*/
int process_include_args(struct flashrom_layout *const l)
{
int i;
unsigned int found = 0;
if (num_include_args == 0)
return 0;
/* User has specified an area, but no layout file is loaded. */
if (l->num_entries == 0) {
msg_gerr("Region requested (with -i \"%s\"), "
"but no layout data is available.\n",
include_args[0]);
return 1;
}
for (i = 0; i < num_include_args; i++) {
if (find_romentry(l, include_args[i]) < 0) {
msg_gerr("Invalid region specified: \"%s\".\n",
include_args[i]);
return 1;
}
found++;
}
msg_ginfo("Using region%s: \"%s\"", num_include_args > 1 ? "s" : "",
include_args[0]);
for (i = 1; i < num_include_args; i++)
msg_ginfo(", \"%s\"", include_args[i]);
msg_ginfo(".\n");
return 0;
}
void layout_cleanup(void)
{
int i;
for (i = 0; i < num_include_args; i++) {
free(include_args[i]);
include_args[i] = NULL;
}
num_include_args = 0;
for (i = 0; i < layout.num_entries; i++) {
layout.entries[i].included = 0;
}
layout.num_entries = 0;
}
/* Validate and - if needed - normalize layout entries. */
int normalize_romentries(const struct flashctx *flash)
{
chipsize_t total_size = flash->chip->total_size * 1024;
int ret = 0;
int i;
for (i = 0; i < layout.num_entries; i++) {
if (layout.entries[i].start >= total_size || layout.entries[i].end >= total_size) {
msg_gwarn("Warning: Address range of region \"%s\" exceeds the current chip's "
"address space.\n", layout.entries[i].name);
if (layout.entries[i].included)
ret = 1;
}
if (layout.entries[i].start > layout.entries[i].end) {
msg_gerr("Error: Size of the address range of region \"%s\" is not positive.\n",
layout.entries[i].name);
ret = 1;
}
}
return ret;
}
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