===================================================================
@@ -82,6 +82,7 @@ void usage(FILE * outfile)
"LAYOUT_FILE.\n"
" -t: Use CMOS layout specified by CMOS option "
"table.\n"
+ " -C CBFS_FILE: Use CBFS file for layout and CMOS defaults.\n"
" [-n] -r NAME: Show parameter NAME. If -n is given, "
"show value only.\n"
" -e NAME: Show all possible values for parameter "
===================================================================
@@ -35,6 +35,7 @@
void get_lbtable(void);
void get_layout_from_cmos_table(void);
+void get_layout_from_cbfs_file(void);
void dump_lbtable(void);
void list_lbtable_choices(void);
void list_lbtable_item(const char item[]);
===================================================================
@@ -38,6 +38,7 @@
#include "cmos_lowlevel.h"
#include "reg_expr.h"
#include "hexdump.h"
+#include "cbfs.h"
typedef void (*op_fn_t) (void);
@@ -92,7 +93,7 @@ static const hexdump_format_t cmos_dump_
****************************************************************************/
int main(int argc, char *argv[])
{
- cmos_layout_get_fn_t fn;
+ cmos_layout_get_fn_t fn = get_layout_from_cmos_table;
parse_nvramtool_args(argc, argv);
@@ -100,8 +101,18 @@ int main(int argc, char *argv[])
set_layout_filename(nvramtool_op_modifiers
[NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE].param);
fn = get_layout_from_file;
- } else
+ } else if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_OPT_TABLE].found) {
fn = get_layout_from_cmos_table;
+ } else if (nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CBFS_FILE].found) {
+ open_cbfs(nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CBFS_FILE].param);
+ void *cmosdefault = cbfs_find_file("cmos.default", CBFS_COMPONENT_CMOS_DEFAULT, NULL);
+ if (cmosdefault == NULL) {
+ printf("Need a cmos.default in the CBFS image for now.\n");
+ exit(1);
+ }
+ select_hal(HAL_MEMORY, cmosdefault);
+ fn = get_layout_from_cbfs_file;
+ }
register_cmos_layout_get_fn(fn);
op_fns[nvramtool_op.op] ();
===================================================================
@@ -41,7 +41,7 @@ static void register_op_modifier(nvramto
static void resolve_op_modifiers(void);
static void sanity_check_args(void);
-static const char getopt_string[] = "-ab:B:c::de:hil::np:r:tvw:xX:y:Y";
+static const char getopt_string[] = "-ab:B:c::C:de:hil::np:r:tvw:xX:y:Y";
/****************************************************************************
* parse_nvramtool_args
@@ -82,6 +82,10 @@ void parse_nvramtool_args(int argc, char
register_op(&op_found, NVRAMTOOL_OP_CMOS_CHECKSUM,
handle_optional_arg(argc, argv));
break;
+ case 'C':
+ register_op_modifier(NVRAMTOOL_MOD_USE_CBFS_FILE,
+ optarg);
+ break;
case 'd':
register_op(&op_found, NVRAMTOOL_OP_LBTABLE_DUMP, NULL);
break;
===================================================================
@@ -58,6 +58,7 @@ typedef struct {
typedef enum { NVRAMTOOL_MOD_SHOW_VALUE_ONLY = 0,
NVRAMTOOL_MOD_USE_CMOS_LAYOUT_FILE,
+ NVRAMTOOL_MOD_USE_CBFS_FILE,
NVRAMTOOL_MOD_USE_CMOS_OPT_TABLE,
NVRAMTOOL_NUM_OP_MODIFIERS /* must always be last */
} nvramtool_op_modifier_t;
===================================================================
@@ -0,0 +1,146 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008, Jordan Crouse <jordan@cosmicpenguin.net>
+ * Copyright (C) 2011 secunet Security Networks AG
+ * (Patrick Georgi <patrick.georgi@secunet.com>
+ *
+ * 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 <arpa/inet.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdio.h>
+#include "cbfs.h"
+
+#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
+#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
+
+static void *cbfs_mapped;
+static u32 cbfs_offset;
+static void* virt_to_phys(u32 virt)
+{
+ return (void*)(virt+cbfs_offset);
+}
+
+#ifdef DEBUG
+#define debug(x...) printf(x)
+#else
+#define debug(x...) while(0) {}
+#endif
+
+static int cbfs_check_magic(struct cbfs_file *file)
+{
+ return !strcmp(file->magic, CBFS_FILE_MAGIC) ? 1 : 0;
+}
+
+static struct cbfs_header *cbfs_master_header(void)
+{
+ struct cbfs_header *header;
+
+ void *ptr = virt_to_phys(*((u32*)virt_to_phys(CBFS_HEADPTR_ADDR)));
+ debug("Check CBFS header at %p\n", ptr);
+ header = (struct cbfs_header *) ptr;
+
+ debug("magic is %08x\n", ntohl(header->magic));
+ if (ntohl(header->magic) != CBFS_HEADER_MAGIC) {
+ printf("ERROR: No valid CBFS header found!\n");
+ return NULL;
+ }
+
+ debug("Found CBFS header at %p\n", ptr);
+ return header;
+}
+
+struct cbfs_file *cbfs_find(const char *name)
+{
+ struct cbfs_header *header = cbfs_master_header();
+ unsigned long offset;
+
+ if (header == NULL)
+ return NULL;
+ offset = (u32)virt_to_phys(0 - ntohl(header->romsize) + ntohl(header->offset));
+
+ int align= ntohl(header->align);
+
+ while(1) {
+ struct cbfs_file *file = (struct cbfs_file *) offset;
+ if (!cbfs_check_magic(file)) return NULL;
+ debug("Check %s\n", CBFS_NAME(file));
+ if (!strcmp(CBFS_NAME(file), name))
+ return file;
+
+ int flen = ntohl(file->len);
+ int foffset = ntohl(file->offset);
+ debug("CBFS: follow chain: %p + %x + %x + align -> ", (void *)offset, foffset, flen);
+
+ unsigned long oldoffset = offset;
+ offset = ALIGN(offset + foffset + flen, align);
+ debug("%p\n", (void *)offset);
+ if (offset <= oldoffset) return NULL;
+
+ if (offset < (u32)virt_to_phys(0xFFFFFFFF - ntohl(header->romsize)))
+ return NULL;
+ }
+}
+
+void *cbfs_find_file(const char *name, unsigned int type, unsigned int *len)
+{
+ struct cbfs_file *file = cbfs_find(name);
+
+ if (file == NULL) {
+ printf("CBFS: Could not find file %s\n",
+ name);
+ return NULL;
+ }
+
+ if (ntohl(file->type) != type) {
+ printf("CBFS: File %s is of type %x instead of"
+ "type %x\n", name, file->type, type);
+
+ return NULL;
+ }
+ if (len != NULL) *len = file->len;
+
+ return (void *) CBFS_SUBHEADER(file);
+}
+
+void open_cbfs(const char *filename)
+{
+ struct stat cbfs_stat;
+ int cbfs_fd;
+
+ cbfs_fd = open(filename, O_RDWR);
+ if (cbfs_fd == -1) {
+ printf("Couldn't open '%s'\n", filename);
+ exit(-1);
+ }
+ if (fstat(cbfs_fd, &cbfs_stat) == -1) {
+ printf("Couldn't stat '%s'\n", filename);
+ exit(-1);
+ }
+ cbfs_mapped = mmap(NULL, cbfs_stat.st_size, PROT_READ | PROT_WRITE,
+ MAP_SHARED, cbfs_fd, 0);
+ if (cbfs_mapped == MAP_FAILED) {
+ printf("Couldn't map '%s'\n", filename);
+ exit(-1);
+ }
+ cbfs_offset = (uint32_t)cbfs_mapped-(0xffffffff-cbfs_stat.st_size+1);
+}
+
===================================================================
@@ -0,0 +1,181 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
+ *
+ * This file is dual-licensed. You can choose between:
+ * - The GNU GPL, version 2, as published by the Free Software Foundation
+ * - The revised BSD license (without advertising clause)
+ *
+ * ---------------------------------------------------------------------------
+ * 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
+ * ---------------------------------------------------------------------------
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * ---------------------------------------------------------------------------
+ */
+
+#ifndef _CBFS_H_
+#define _CBFS_H_
+
+#include "coreboot_tables.h"
+
+typedef uint64_t u64;
+typedef uint32_t u32;
+typedef uint16_t u16;
+typedef uint8_t u8;
+
+/** These are standard values for the known compression
+ alogrithms that coreboot knows about for stages and
+ payloads. Of course, other CBFS users can use whatever
+ values they want, as long as they understand them. */
+
+#define CBFS_COMPRESS_NONE 0
+#define CBFS_COMPRESS_LZMA 1
+
+/** These are standard component types for well known
+ components (i.e - those that coreboot needs to consume.
+ Users are welcome to use any other value for their
+ components */
+
+#define CBFS_TYPE_STAGE 0x10
+#define CBFS_TYPE_PAYLOAD 0x20
+#define CBFS_TYPE_OPTIONROM 0x30
+#define CBFS_TYPE_BOOTSPLASH 0x40
+#define CBFS_TYPE_RAW 0x50
+#define CBFS_TYPE_VSA 0x51
+#define CBFS_TYPE_MBI 0x52
+#define CBFS_TYPE_MICROCODE 0x53
+#define CBFS_COMPONENT_CMOS_DEFAULT 0xaa
+#define CBFS_COMPONENT_CMOS_LAYOUT 0x01aa
+
+
+/** this is the master cbfs header - it need to be
+ located somewhere in the bootblock. Where it
+ actually lives is up to coreboot. A pointer to
+ this header will live at 0xFFFFFFFc, so we can
+ easily find it. */
+
+#define CBFS_HEADER_MAGIC 0x4F524243
+#define CBFS_HEADPTR_ADDR 0xFFFFFFFc
+#define VERSION1 0x31313131
+
+struct cbfs_header {
+ u32 magic;
+ u32 version;
+ u32 romsize;
+ u32 bootblocksize;
+ u32 align;
+ u32 offset;
+ u32 pad[2];
+} __attribute__((packed));
+
+/** This is a component header - every entry in the CBFS
+ will have this header.
+
+ This is how the component is arranged in the ROM:
+
+ -------------- <- 0
+ component header
+ -------------- <- sizeof(struct component)
+ component name
+ -------------- <- offset
+ data
+ ...
+ -------------- <- offset + len
+*/
+
+#define CBFS_FILE_MAGIC "LARCHIVE"
+
+struct cbfs_file {
+ char magic[8];
+ u32 len;
+ u32 type;
+ u32 checksum;
+ u32 offset;
+} __attribute__((packed));
+
+/*** Component sub-headers ***/
+
+/* Following are component sub-headers for the "standard"
+ component types */
+
+/** This is the sub-header for stage components. Stages are
+ loaded by coreboot during the normal boot process */
+
+struct cbfs_stage {
+ u32 compression; /** Compression type */
+ u64 entry; /** entry point */
+ u64 load; /** Where to load in memory */
+ u32 len; /** length of data to load */
+ u32 memlen; /** total length of object in memory */
+} __attribute__((packed));
+
+/** this is the sub-header for payload components. Payloads
+ are loaded by coreboot at the end of the boot process */
+
+struct cbfs_payload_segment {
+ u32 type;
+ u32 compression;
+ u32 offset;
+ u64 load_addr;
+ u32 len;
+ u32 mem_len;
+} __attribute__((packed));
+
+struct cbfs_payload {
+ struct cbfs_payload_segment segments;
+};
+
+#define PAYLOAD_SEGMENT_CODE 0x45444F43
+#define PAYLOAD_SEGMENT_DATA 0x41544144
+#define PAYLOAD_SEGMENT_BSS 0x20535342
+#define PAYLOAD_SEGMENT_PARAMS 0x41524150
+#define PAYLOAD_SEGMENT_ENTRY 0x52544E45
+
+struct cbfs_optionrom {
+ u32 compression;
+ u32 len;
+} __attribute__((packed));
+
+#define CBFS_NAME(_c) (((char *) (_c)) + sizeof(struct cbfs_file))
+#define CBFS_SUBHEADER(_p) ( (void *) ((((u8 *) (_p)) + ntohl((_p)->offset))) )
+
+void * cbfs_get_file(const char *name);
+struct cbfs_file *cbfs_find(const char *name);
+void *cbfs_find_file(const char *name, unsigned int type, unsigned int *len);
+
+void open_cbfs(const char *filename);
+#endif
+
===================================================================
@@ -29,6 +29,7 @@
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
\*****************************************************************************/
+#include <arpa/inet.h>
#include <string.h>
#include <sys/mman.h>
#include "common.h"
@@ -38,6 +39,7 @@
#include "layout.h"
#include "cmos_lowlevel.h"
#include "hexdump.h"
+#include "cbfs.h"
typedef void (*lbtable_print_fn_t) (const struct lb_record * rec);
@@ -315,6 +317,21 @@ void get_lbtable(void)
exit(1);
}
+static void process_layout(void)
+{
+ if ((cmos_table) == NULL) {
+ fprintf(stderr,
+ "%s: CMOS option table not found in coreboot table. "
+ "Apparently, the coreboot installed on this system was "
+ "built without specifying CONFIG_HAVE_OPTION_TABLE.\n",
+ prog_name);
+ exit(1);
+ }
+
+ process_cmos_table();
+ get_cmos_checksum_info();
+}
+
/****************************************************************************
* get_layout_from_cmos_table
*
@@ -327,18 +344,18 @@ void get_layout_from_cmos_table(void)
get_lbtable();
cmos_table = (const struct cmos_option_table *)
find_lbrec(LB_TAG_CMOS_OPTION_TABLE);
+ process_layout();
+}
- if ((cmos_table) == NULL) {
- fprintf(stderr,
- "%s: CMOS option table not found in coreboot table. "
- "Apparently, the coreboot installed on this system was "
- "built without specifying CONFIG_HAVE_OPTION_TABLE.\n",
- prog_name);
- exit(1);
- }
-
- process_cmos_table();
- get_cmos_checksum_info();
+void get_layout_from_cbfs_file(void)
+{
+ static struct lb_header header;
+ u32 len;
+ cmos_table = cbfs_find_file("cmos_layout.bin", CBFS_COMPONENT_CMOS_LAYOUT, &len);
+ lbtable = &header;
+ header.header_bytes = (u32)cmos_table-(u32)lbtable;
+ header.table_bytes = ntohl(len);
+ process_layout();
}
/****************************************************************************
===================================================================
@@ -24,12 +24,12 @@ CC = gcc
STRIP = strip
INSTALL = /usr/bin/install
PREFIX = /usr/local
-CFLAGS = -O2 -g -Wall -W
+CFLAGS = -O2 -g -Wall -W -m32
#CFLAGS = -Os -Wall
OBJS = cmos_lowlevel.o cmos_ops.o common.o compute_ip_checksum.o \
hexdump.o input_file.o layout.o layout_file.o lbtable.o \
- nvramtool.o opts.o reg_expr.o
+ nvramtool.o opts.o reg_expr.o cbfs.o
OS_ARCH = $(shell uname)
ifeq ($(OS_ARCH), Darwin)
This is the first patch of this series that actually adds a new feature. Use nvramtool -C to work on CBFS images that contain cmos_layout.bin for CMOS metadata and cmos.default for CMOS defaults. Read/Write/Enum on CMOS data work on cmos.default then. Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>