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Give layouts their own type

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Introduce `struct flashrom_layout` and refactor layout.c a little, so
we can reuse the layout from there and have other sources of layouts
beside it.

I didn't want to clutter up flash.h any more. So things went into a new
layout.h.

Change-Id: Icea1a58c283131cc9c5fde6f16d783538dc1a4c7
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/17944
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
This commit is contained in:
Nico Huber 2016-04-27 15:56:14 +02:00 committed by Nico Huber
parent 9e14aeda64
commit 3a9939b952
3 changed files with 102 additions and 50 deletions
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10
flash.h
View File

@ -37,6 +37,8 @@
#undef max
#endif
#include "layout.h"
#define ERROR_PTR ((void*)-1)
/* Error codes */
@ -47,14 +49,6 @@
typedef uintptr_t chipaddr;
#define PRIxPTR_WIDTH ((int)(sizeof(uintptr_t)*2))
/* Types and macros regarding the maximum flash space size supported by generic code. */
typedef uint32_t chipoff_t; /* Able to store any addressable offset within a supported flash memory. */
typedef uint32_t chipsize_t; /* Able to store the number of bytes of any supported flash memory. */
#define FL_MAX_CHIPOFF_BITS (24)
#define FL_MAX_CHIPOFF ((chipoff_t)(1ULL<<FL_MAX_CHIPOFF_BITS)-1)
#define PRIxCHIPOFF "06"PRIx32
#define PRIuCHIPSIZE PRIu32
int register_shutdown(int (*function) (void *data), void *data);
int shutdown_free(void *data);
void *programmer_map_flash_region(const char *descr, uintptr_t phys_addr, size_t len);

80
layout.c
View File

@ -25,25 +25,21 @@
#include <limits.h>
#include "flash.h"
#include "programmer.h"
#include "layout.h"
#define MAX_ROMLAYOUT 32
typedef struct {
chipoff_t start;
chipoff_t end;
unsigned int included;
char name[256];
} romentry_t;
/* rom_entries store the entries specified in a layout file and associated run-time data */
static romentry_t rom_entries[MAX_ROMLAYOUT];
static int num_rom_entries = 0; /* the number of successfully parsed rom_entries */
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 rom_entries list. */
* 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. */
const struct flashrom_layout *get_global_layout(void)
{
return &layout;
}
#ifndef __LIBPAYLOAD__
int read_romlayout(const char *name)
{
@ -62,13 +58,13 @@ int read_romlayout(const char *name)
while (!feof(romlayout)) {
char *tstr1, *tstr2;
if (num_rom_entries >= MAX_ROMLAYOUT) {
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, rom_entries[num_rom_entries].name))
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
@ -83,16 +79,16 @@ int read_romlayout(const char *name)
(void)fclose(romlayout);
return 1;
}
rom_entries[num_rom_entries].start = strtol(tstr1, (char **)NULL, 16);
rom_entries[num_rom_entries].end = strtol(tstr2, (char **)NULL, 16);
rom_entries[num_rom_entries].included = 0;
num_rom_entries++;
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 < num_rom_entries; i++) {
for (i = 0; i < layout.num_entries; i++) {
msg_gdbg("romlayout %08x - %08x named %s\n",
rom_entries[i].start,
rom_entries[i].end, rom_entries[i].name);
layout.entries[i].start,
layout.entries[i].end, layout.entries[i].name);
}
(void)fclose(romlayout);
@ -140,13 +136,13 @@ static int find_romentry(char *name)
{
int i;
if (num_rom_entries == 0)
if (layout.num_entries == 0)
return -1;
msg_gspew("Looking for region \"%s\"... ", name);
for (i = 0; i < num_rom_entries; i++) {
if (!strcmp(rom_entries[i].name, name)) {
rom_entries[i].included = 1;
for (i = 0; i < layout.num_entries; i++) {
if (!strcmp(layout.entries[i].name, name)) {
layout.entries[i].included = 1;
msg_gspew("found.\n");
return i;
}
@ -167,7 +163,7 @@ int process_include_args(void)
return 0;
/* User has specified an area, but no layout file is loaded. */
if (num_rom_entries == 0) {
if (layout.num_entries == 0) {
msg_gerr("Region requested (with -i \"%s\"), "
"but no layout data is available.\n",
include_args[0]);
@ -200,22 +196,22 @@ void layout_cleanup(void)
}
num_include_args = 0;
for (i = 0; i < num_rom_entries; i++) {
rom_entries[i].included = 0;
for (i = 0; i < layout.num_entries; i++) {
layout.entries[i].included = 0;
}
num_rom_entries = 0;
layout.num_entries = 0;
}
romentry_t *get_next_included_romentry(unsigned int start)
struct romentry *get_next_included_romentry(unsigned int start)
{
int i;
unsigned int best_start = UINT_MAX;
romentry_t *best_entry = NULL;
romentry_t *cur;
struct romentry *best_entry = NULL;
struct romentry *cur;
/* First come, first serve for overlapping regions. */
for (i = 0; i < num_rom_entries; i++) {
cur = &rom_entries[i];
for (i = 0; i < layout.num_entries; i++) {
cur = &layout.entries[i];
if (!cur->included)
continue;
/* Already past the current entry? */
@ -240,16 +236,16 @@ int normalize_romentries(const struct flashctx *flash)
int ret = 0;
int i;
for (i = 0; i < num_rom_entries; i++) {
if (rom_entries[i].start >= total_size || rom_entries[i].end >= total_size) {
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", rom_entries[i].name);
if (rom_entries[i].included)
"address space.\n", layout.entries[i].name);
if (layout.entries[i].included)
ret = 1;
}
if (rom_entries[i].start > rom_entries[i].end) {
if (layout.entries[i].start > layout.entries[i].end) {
msg_gerr("Error: Size of the address range of region \"%s\" is not positive.\n",
rom_entries[i].name);
layout.entries[i].name);
ret = 1;
}
}
@ -281,7 +277,7 @@ static int copy_old_content(struct flashctx *flash, int oldcontents_valid, uint8
int build_new_image(struct flashctx *flash, bool oldcontents_valid, uint8_t *oldcontents, uint8_t *newcontents)
{
unsigned int start = 0;
romentry_t *entry;
struct romentry *entry;
unsigned int size = flash->chip->total_size * 1024;
/* If no regions were specified for inclusion, assume

62
layout.h Normal file
View File

@ -0,0 +1,62 @@
/*
* 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
* Copyright (C) 2016 secunet Security Networks AG
* (Written by Nico Huber <nico.huber@secunet.com> for secunet)
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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
*/
#ifndef __LAYOUT_H__
#define __LAYOUT_H__ 1
#include <stddef.h>
#include <stdint.h>
/* Types and macros regarding the maximum flash space size supported by generic code. */
typedef uint32_t chipoff_t; /* Able to store any addressable offset within a supported flash memory. */
typedef uint32_t chipsize_t; /* Able to store the number of bytes of any supported flash memory. */
#define FL_MAX_CHIPOFF_BITS (24)
#define FL_MAX_CHIPOFF ((chipoff_t)(1ULL<<FL_MAX_CHIPOFF_BITS)-1)
#define PRIxCHIPOFF "06"PRIx32
#define PRIuCHIPSIZE PRIu32
#define MAX_ROMLAYOUT 32
struct romentry {
chipoff_t start;
chipoff_t end;
bool included;
char name[256];
};
struct flashrom_layout {
/* entries store the entries specified in a layout file and associated run-time data */
struct romentry *entries;
/* the number of successfully parsed entries */
size_t num_entries;
};
struct single_layout {
struct flashrom_layout base;
struct romentry entry;
};
const struct flashrom_layout *get_global_layout(void);
#endif /* !__LAYOUT_H__ */