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coreboot-kgpe-d16/util/cbfstool/cbfstool.c

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/*
* cbfstool, CLI utility for CBFS file manipulation
*
* Copyright (C) 2009 coresystems GmbH
* written by Patrick Georgi <patrick.georgi@coresystems.de>
* Copyright (C) 2012 Google, Inc.
*
* 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 <stdlib.h>
#include <string.h>
#include <strings.h>
#include <ctype.h>
#include <unistd.h>
#include <getopt.h>
#include "common.h"
#include "cbfs.h"
#include "cbfs_image.h"
#include "cbfs_sections.h"
#include "fit.h"
#include "partitioned_file.h"
struct command {
const char *name;
const char *optstring;
int (*function) (void);
// Whether to populate param.image_region before invoking function
bool accesses_region;
// Whether to write that region's contents back to image_file at the end
bool modifies_region;
};
static struct param {
partitioned_file_t *image_file;
struct buffer *image_region;
char *name;
char *filename;
char *bootblock;
char *ignore_section;
uint64_t u64val;
uint32_t type;
uint32_t baseaddress;
uint32_t baseaddress_assigned;
uint32_t loadaddress;
uint32_t copyoffset;
uint32_t copyoffset_assigned;
uint32_t headeroffset;
uint32_t headeroffset_assigned;
uint32_t entrypoint;
uint32_t size;
uint32_t alignment;
uint32_t pagesize;
uint32_t cbfsoffset;
uint32_t cbfsoffset_assigned;
uint32_t top_aligned;
uint32_t arch;
int fit_empty_entries;
comp_algo algo;
/* for linux payloads */
char *initrd;
char *cmdline;
} param = {
/* All variables not listed are initialized as zero. */
.arch = CBFS_ARCHITECTURE_UNKNOWN,
.algo = CBFS_COMPRESS_NONE,
.headeroffset = ~0,
};
typedef int (*convert_buffer_t)(struct buffer *buffer, uint32_t *offset);
static int cbfs_add_integer_component(const char *name,
uint64_t u64val,
uint32_t offset,
uint32_t headeroffset) {
struct cbfs_image image;
struct buffer buffer;
int i, ret = 1;
if (!name) {
ERROR("You need to specify -n/--name.\n");
return 1;
}
if (buffer_create(&buffer, 8, name) != 0)
return 1;
for (i = 0; i < 8; i++)
buffer.data[i] = (u64val >> i*8) & 0xff;
if (cbfs_image_from_buffer(&image, param.image_region, headeroffset)) {
ERROR("Selected image region is not a CBFS.\n");
goto done;
}
if (cbfs_get_entry(&image, name)) {
ERROR("'%s' already in ROM image.\n", name);
goto done;
}
if (cbfs_add_entry(&image, &buffer, name, CBFS_COMPONENT_RAW, offset) !=
0) {
ERROR("Failed to add %llu into ROM image as '%s'.\n",
(long long unsigned)u64val, name);
goto done;
}
ret = 0;
done:
buffer_delete(&buffer);
return ret;
}
static int cbfs_add_component(const char *filename,
const char *name,
uint32_t type,
uint32_t offset,
uint32_t headeroffset,
convert_buffer_t convert)
{
if (!filename) {
ERROR("You need to specify -f/--filename.\n");
return 1;
}
if (!name) {
ERROR("You need to specify -n/--name.\n");
return 1;
}
if (type == 0) {
ERROR("You need to specify a valid -t/--type.\n");
return 1;
}
struct cbfs_image image;
if (cbfs_image_from_buffer(&image, param.image_region, headeroffset)) {
ERROR("Selected image region is not a CBFS.\n");
return 1;
}
struct buffer buffer;
if (buffer_from_file(&buffer, filename) != 0) {
ERROR("Could not load file '%s'.\n", filename);
return 1;
}
if (convert && convert(&buffer, &offset) != 0) {
ERROR("Failed to parse file '%s'.\n", filename);
buffer_delete(&buffer);
return 1;
}
if (cbfs_get_entry(&image, name)) {
ERROR("'%s' already in ROM image.\n", name);
buffer_delete(&buffer);
return 1;
}
if (cbfs_add_entry(&image, &buffer, name, type, offset) != 0) {
ERROR("Failed to add '%s' into ROM image.\n", filename);
buffer_delete(&buffer);
return 1;
}
buffer_delete(&buffer);
return 0;
}
static int cbfstool_convert_mkstage(struct buffer *buffer, uint32_t *offset)
{
struct buffer output;
int ret;
ret = parse_elf_to_stage(buffer, &output, param.algo, offset,
param.ignore_section);
if (ret != 0)
return -1;
buffer_delete(buffer);
// direct assign, no dupe.
memcpy(buffer, &output, sizeof(*buffer));
return 0;
}
static int cbfstool_convert_mkpayload(struct buffer *buffer,
unused uint32_t *offset)
{
struct buffer output;
int ret;
/* per default, try and see if payload is an ELF binary */
ret = parse_elf_to_payload(buffer, &output, param.algo);
/* If it's not an ELF, see if it's a UEFI FV */
if (ret != 0)
ret = parse_fv_to_payload(buffer, &output, param.algo);
/* If it's neither ELF nor UEFI Fv, try bzImage */
if (ret != 0)
ret = parse_bzImage_to_payload(buffer, &output,
param.initrd, param.cmdline, param.algo);
/* Not a supported payload type */
if (ret != 0) {
ERROR("Not a supported payload type (ELF / FV).\n");
buffer_delete(buffer);
return -1;
}
buffer_delete(buffer);
// direct assign, no dupe.
memcpy(buffer, &output, sizeof(*buffer));
return 0;
}
static int cbfstool_convert_mkflatpayload(struct buffer *buffer,
unused uint32_t *offset)
{
struct buffer output;
if (parse_flat_binary_to_payload(buffer, &output,
param.loadaddress,
param.entrypoint,
param.algo) != 0) {
return -1;
}
buffer_delete(buffer);
// direct assign, no dupe.
memcpy(buffer, &output, sizeof(*buffer));
return 0;
}
static int cbfs_add(void)
{
return cbfs_add_component(param.filename,
param.name,
param.type,
param.baseaddress,
param.headeroffset,
NULL);
}
static int cbfs_add_stage(void)
{
return cbfs_add_component(param.filename,
param.name,
CBFS_COMPONENT_STAGE,
param.baseaddress,
param.headeroffset,
cbfstool_convert_mkstage);
}
static int cbfs_add_payload(void)
{
return cbfs_add_component(param.filename,
param.name,
CBFS_COMPONENT_PAYLOAD,
param.baseaddress,
param.headeroffset,
cbfstool_convert_mkpayload);
}
static int cbfs_add_flat_binary(void)
{
if (param.loadaddress == 0) {
ERROR("You need to specify a valid "
"-l/--load-address.\n");
return 1;
}
if (param.entrypoint == 0) {
ERROR("You need to specify a valid "
"-e/--entry-point.\n");
return 1;
}
return cbfs_add_component(param.filename,
param.name,
CBFS_COMPONENT_PAYLOAD,
param.baseaddress,
param.headeroffset,
cbfstool_convert_mkflatpayload);
}
static int cbfs_add_integer(void)
{
return cbfs_add_integer_component(param.name,
param.u64val,
param.baseaddress,
param.headeroffset);
}
static int cbfs_remove(void)
{
if (!param.name) {
ERROR("You need to specify -n/--name.\n");
return 1;
}
struct cbfs_image image;
if (cbfs_image_from_buffer(&image, param.image_region,
param.headeroffset)) {
ERROR("Selected image region is not a CBFS.\n");
return 1;
}
if (cbfs_remove_entry(&image, param.name) != 0) {
ERROR("Removing file '%s' failed.\n",
param.name);
return 1;
}
return 0;
}
static int cbfs_create(void)
{
if (param.arch == CBFS_ARCHITECTURE_UNKNOWN) {
ERROR("You need to specify -m/--machine arch.\n");
return 1;
}
struct buffer bootblock;
if (!param.bootblock) {
DEBUG("-B not given, creating image without bootblock.\n");
buffer_create(&bootblock, 0, "(dummy)");
} else if (buffer_from_file(&bootblock, param.bootblock)) {
return 1;
}
if (!param.alignment)
param.alignment = 64; // default CBFS entry alignment
// Set default offsets. x86, as usual, needs to be a special snowflake.
if (!param.baseaddress_assigned) {
if (param.arch == CBFS_ARCHITECTURE_X86) {
// Make sure there's at least enough room for rel_offset
param.baseaddress = param.size - (
bootblock.size > sizeof(int32_t) ?
bootblock.size : sizeof(int32_t));
DEBUG("x86 -> bootblock lies at end of ROM (%#x).\n",
param.baseaddress);
} else {
param.baseaddress = 0;
DEBUG("bootblock starts at address 0x0.\n");
}
}
if (!param.headeroffset_assigned) {
if (param.arch == CBFS_ARCHITECTURE_X86) {
param.headeroffset = param.baseaddress -
sizeof(struct cbfs_header);
DEBUG("x86 -> CBFS header before bootblock (%#x).\n",
param.headeroffset);
} else {
param.headeroffset = align_up(param.baseaddress +
bootblock.size, sizeof(uint32_t));
DEBUG("CBFS header placed behind bootblock (%#x).\n",
param.headeroffset);
}
}
if (!param.cbfsoffset_assigned) {
if (param.arch == CBFS_ARCHITECTURE_X86) {
param.cbfsoffset = 0;
DEBUG("x86 -> CBFS entries start at address 0x0.\n");
} else {
param.cbfsoffset = align_up(param.headeroffset +
sizeof(struct cbfs_header),
param.alignment);
DEBUG("CBFS entries start beind master header (%#x).\n",
param.cbfsoffset);
}
}
struct cbfs_image image;
if (!cbfs_image_from_buffer(&image, param.image_region, -1))
// It *already* contains a CBFS?! This should be a blank file.
assert(false);
if (cbfs_image_create(&image,
param.arch,
param.alignment,
&bootblock,
param.baseaddress,
param.headeroffset,
param.cbfsoffset) != 0) {
ERROR("Failed to initialize CBFS structure.\n");
buffer_delete(&bootblock);
return 1;
}
buffer_delete(&bootblock);
return 0;
}
static int cbfs_locate(void)
{
if (!param.filename) {
ERROR("You need to specify -f/--filename.\n");
return 1;
}
if (!param.name) {
ERROR("You need to specify -n/--name.\n");
return 1;
}
struct cbfs_image image;
if (cbfs_image_from_buffer(&image, param.image_region,
param.headeroffset)) {
ERROR("Selected image region is not a CBFS.\n");
return 1;
}
if (cbfs_get_entry(&image, param.name))
WARN("'%s' already in CBFS.\n", param.name);
struct buffer buffer;
if (buffer_from_file(&buffer, param.filename) != 0) {
ERROR("Cannot load %s.\n", param.filename);
return 1;
}
int32_t address = cbfs_locate_entry(&image, param.name, buffer.size,
param.pagesize, param.alignment);
buffer_delete(&buffer);
if (address == -1) {
ERROR("'%s' can't fit in CBFS for page-size %#x, align %#x.\n",
param.name, param.pagesize, param.alignment);
return 1;
}
if (param.top_aligned)
address = address - image.header.romsize;
printf("0x%x\n", address);
return 0;
}
static int cbfs_print(void)
{
struct cbfs_image image;
if (cbfs_image_from_buffer(&image, param.image_region,
param.headeroffset)) {
ERROR("Selected image region is not a CBFS.\n");
return 1;
}
cbfs_print_directory(&image);
return 0;
}
static int cbfs_extract(void)
{
if (!param.filename) {
ERROR("You need to specify -f/--filename.\n");
return 1;
}
if (!param.name) {
ERROR("You need to specify -n/--name.\n");
return 1;
}
struct cbfs_image image;
if (cbfs_image_from_buffer(&image, param.image_region,
param.headeroffset)) {
ERROR("Selected image region is not a CBFS.\n");
return 1;
}
return cbfs_export_entry(&image, param.name, param.filename);
}
static int cbfs_update_fit(void)
{
if (!param.name) {
ERROR("You need to specify -n/--name.\n");
return 1;
}
if (param.fit_empty_entries <= 0) {
ERROR("Invalid number of fit entries "
"(-x/--empty-fits): %d\n", param.fit_empty_entries);
return 1;
}
struct cbfs_image image;
if (cbfs_image_from_buffer(&image, param.image_region,
param.headeroffset)) {
ERROR("Selected image region is not a CBFS.\n");
return 1;
}
return fit_update_table(&image, param.fit_empty_entries, param.name);
}
static int cbfs_copy(void)
{
if (!param.copyoffset_assigned) {
ERROR("You need to specify -D/--copy_offset.\n");
return 1;
}
if (!param.size) {
ERROR("You need to specify -s/--size.\n");
return 1;
}
struct cbfs_image image;
if (cbfs_image_from_buffer(&image, param.image_region,
param.headeroffset)) {
ERROR("Selected image region is not a CBFS.\n");
return 1;
}
return cbfs_copy_instance(&image, param.copyoffset, param.size);
}
static const struct command commands[] = {
{"add", "H:f:n:t:b:vh?", cbfs_add, true, true},
{"add-flat-binary", "H:f:n:l:e:c:b:vh?", cbfs_add_flat_binary, true,
true},
{"add-payload", "H:f:n:t:c:b:vh?C:I:", cbfs_add_payload, true, true},
{"add-stage", "H:f:n:t:c:b:S:vh?", cbfs_add_stage, true, true},
{"add-int", "H:i:n:b:vh?", cbfs_add_integer, true, true},
{"copy", "H:D:s:", cbfs_copy, true, true},
{"create", "s:B:b:H:a:o:m:vh?", cbfs_create, true, true},
{"extract", "H:n:f:vh?", cbfs_extract, true, false},
{"locate", "H:f:n:P:a:Tvh?", cbfs_locate, true, false},
{"print", "H:vh?", cbfs_print, true, false},
{"remove", "H:n:vh?", cbfs_remove, true, true},
{"update-fit", "H:n:x:vh?", cbfs_update_fit, true, true},
};
static struct option long_options[] = {
{"alignment", required_argument, 0, 'a' },
{"base-address", required_argument, 0, 'b' },
{"bootblock", required_argument, 0, 'B' },
{"cmdline", required_argument, 0, 'C' },
{"compression", required_argument, 0, 'c' },
{"copy-offset", required_argument, 0, 'D' },
{"empty-fits", required_argument, 0, 'x' },
{"entry-point", required_argument, 0, 'e' },
{"file", required_argument, 0, 'f' },
{"header-offset", required_argument, 0, 'H' },
{"help", no_argument, 0, 'h' },
{"ignore-sec", required_argument, 0, 'S' },
{"initrd", required_argument, 0, 'I' },
{"int", required_argument, 0, 'i' },
{"load-address", required_argument, 0, 'l' },
{"machine", required_argument, 0, 'm' },
{"name", required_argument, 0, 'n' },
{"offset", required_argument, 0, 'o' },
{"page-size", required_argument, 0, 'P' },
{"size", required_argument, 0, 's' },
{"top-aligned", required_argument, 0, 'T' },
{"type", required_argument, 0, 't' },
{"verbose", no_argument, 0, 'v' },
{NULL, 0, 0, 0 }
};
static void usage(char *name)
{
printf
("cbfstool: Management utility for CBFS formatted ROM images\n\n"
"USAGE:\n" " %s [-h]\n"
" %s FILE COMMAND [-v] [PARAMETERS]...\n\n" "OPTIONs:\n"
" -H header_offset Do not search for header, use this offset\n"
" -T Output top-aligned memory address\n"
" -v Provide verbose output\n"
" -h Display this help message\n\n"
"COMMANDs:\n"
" add -f FILE -n NAME -t TYPE [-b base-address] "
"Add a component\n"
" add-payload -f FILE -n NAME [-c compression] [-b base] "
"Add a payload to the ROM\n"
" (linux specific: [-C cmdline] [-I initrd])\n"
" add-stage -f FILE -n NAME [-c compression] [-b base] \\\n"
" [-S section-to-ignore] "
"Add a stage to the ROM\n"
" add-flat-binary -f FILE -n NAME -l load-address \\\n"
" -e entry-point [-c compression] [-b base] "
"Add a 32bit flat mode binary\n"
" add-int -i INTEGER -n NAME [-b base] "
"Add a raw 64-bit integer value\n"
" remove -n NAME "
"Remove a component\n"
" copy -D new_header_offset -s region size \\\n"
" [-H source header offset] "
"Create a copy (duplicate) cbfs instance\n"
" create -s size -m ARCH [-B bootblock] [-b bootblock offset] \\\n"
" [-o CBFS offset] [-H header offset] [-a align] "
"Create a ROM file\n"
" locate -f FILE -n NAME [-P page-size] [-a align] [-T] "
"Find a place for a file of that size\n"
" print "
"Show the contents of the ROM\n"
" extract -n NAME -f FILE "
"Extracts a raw payload from ROM\n"
" update-fit -n MICROCODE_BLOB_NAME -x EMTPY_FIT_ENTRIES\n "
"Updates the FIT table with microcode entries\n"
"\n"
"OFFSETs:\n"
" Numbers accompanying -b, -H, and -o switches may be provided\n"
" in two possible formats: if their value is greater than\n"
" 0x80000000, they are interpreted as a top-aligned x86 memory\n"
" address; otherwise, they are treated as an offset into flash.\n"
"ARCHes:\n"
" arm64, arm, mips, x86\n"
"TYPEs:\n", name, name
);
print_supported_filetypes();
}
int main(int argc, char **argv)
{
size_t i;
int c;
if (argc < 3) {
usage(argv[0]);
return 1;
}
char *image_name = argv[1];
char *cmd = argv[2];
optind += 2;
for (i = 0; i < ARRAY_SIZE(commands); i++) {
if (strcmp(cmd, commands[i].name) != 0)
continue;
while (1) {
char *suffix = NULL;
int option_index = 0;
c = getopt_long(argc, argv, commands[i].optstring,
long_options, &option_index);
if (c == -1)
break;
/* filter out illegal long options */
if (strchr(commands[i].optstring, c) == NULL) {
/* TODO maybe print actual long option instead */
ERROR("%s: invalid option -- '%c'\n",
argv[0], c);
c = '?';
}
switch(c) {
case 'n':
param.name = optarg;
break;
case 't':
if (intfiletype(optarg) != ((uint64_t) - 1))
param.type = intfiletype(optarg);
else
param.type = strtoul(optarg, NULL, 0);
if (param.type == 0)
WARN("Unknown type '%s' ignored\n",
optarg);
break;
case 'c':
if (!strncasecmp(optarg, "lzma", 5))
param.algo = CBFS_COMPRESS_LZMA;
else if (!strncasecmp(optarg, "none", 5))
param.algo = CBFS_COMPRESS_NONE;
else
WARN("Unknown compression '%s'"
" ignored.\n", optarg);
break;
case 'b':
param.baseaddress = strtoul(optarg, NULL, 0);
// baseaddress may be zero on non-x86, so we
// need an explicit "baseaddress_assigned".
param.baseaddress = strtoul(optarg, NULL, 0);
param.baseaddress_assigned = 1;
break;
case 'l':
param.loadaddress = strtoul(optarg, NULL, 0);
break;
case 'e':
param.entrypoint = strtoul(optarg, NULL, 0);
break;
case 's':
param.size = strtoul(optarg, &suffix, 0);
if (tolower(suffix[0])=='k') {
param.size *= 1024;
}
if (tolower(suffix[0])=='m') {
param.size *= 1024 * 1024;
}
break;
case 'B':
param.bootblock = optarg;
break;
case 'H':
param.headeroffset = strtoul(
optarg, NULL, 0);
param.headeroffset_assigned = 1;
break;
case 'D':
param.copyoffset = strtoul(optarg, NULL, 0);
param.copyoffset_assigned = 1;
break;
case 'a':
param.alignment = strtoul(optarg, NULL, 0);
break;
case 'P':
param.pagesize = strtoul(optarg, NULL, 0);
break;
case 'o':
param.cbfsoffset = strtoul(optarg, NULL, 0);
param.cbfsoffset_assigned = 1;
break;
case 'f':
param.filename = optarg;
break;
case 'i':
param.u64val = strtoull(optarg, NULL, 0);
break;
case 'T':
param.top_aligned = 1;
break;
case 'x':
param.fit_empty_entries = strtol(optarg, NULL, 0);
break;
case 'v':
verbose++;
break;
case 'm':
param.arch = string_to_arch(optarg);
break;
case 'I':
param.initrd = optarg;
break;
case 'C':
param.cmdline = optarg;
break;
case 'S':
param.ignore_section = optarg;
break;
case 'h':
case '?':
usage(argv[0]);
return 1;
default:
break;
}
}
if (commands[i].function == cbfs_create) {
if (param.size == 0) {
ERROR("You need to specify a valid -s/--size.\n");
return 1;
}
param.image_file = partitioned_file_create_flat(
image_name, param.size);
} else {
param.image_file =
partitioned_file_reopen(image_name,
partitioned_file_open_as_flat);
}
if (!param.image_file)
return 1;
// If the action needs to read an image region, as indicated by
// having accesses_region set in its command struct, that
// region's buffer struct will be stored here and the client
// will receive a pointer to it via param.image_region. It
// need not write the buffer back to the image file itself,
// since this behavior can be requested via its modifies_region
// field. Additionally, it should never free the region buffer,
// as that is performed automatically once it completes.
struct buffer image_region;
memset(&image_region, 0, sizeof(image_region));
if (commands[i].accesses_region) {
assert(param.image_file);
if (!partitioned_file_read_region(&image_region,
param.image_file, SECTION_NAME_PRIMARY_CBFS)) {
partitioned_file_close(param.image_file);
return 1;
}
param.image_region = &image_region;
}
int error = commands[i].function();
if (!error && commands[i].modifies_region) {
assert(param.image_file);
assert(commands[i].accesses_region);
if (!partitioned_file_write_region(param.image_file,
&image_region)) {
partitioned_file_close(param.image_file);
return 1;
}
}
partitioned_file_close(param.image_file);
return error;
}
ERROR("Unknown command '%s'.\n", cmd);
usage(argv[0]);
return 1;
}
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