488 lines
14 KiB
C
488 lines
14 KiB
C
/*
|
|
* common utility functions for cbfstool
|
|
*
|
|
* Copyright (C) 2009 coresystems GmbH
|
|
* written by Patrick Georgi <patrick.georgi@coresystems.de>
|
|
*
|
|
* 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 <libgen.h>
|
|
#include "common.h"
|
|
#include "cbfs.h"
|
|
#include "elf.h"
|
|
|
|
#define dprintf(x...)
|
|
|
|
uint32_t getfilesize(const char *filename)
|
|
{
|
|
uint32_t size;
|
|
FILE *file = fopen(filename, "rb");
|
|
fseek(file, 0, SEEK_END);
|
|
size = ftell(file);
|
|
fclose(file);
|
|
return size;
|
|
}
|
|
|
|
void *loadfile(const char *filename, uint32_t * romsize_p, void *content,
|
|
int place)
|
|
{
|
|
FILE *file = fopen(filename, "rb");
|
|
if (file == NULL)
|
|
return NULL;
|
|
fseek(file, 0, SEEK_END);
|
|
*romsize_p = ftell(file);
|
|
fseek(file, 0, SEEK_SET);
|
|
if (!content) {
|
|
content = malloc(*romsize_p);
|
|
if (!content) {
|
|
printf("Could not get %d bytes for file %s\n",
|
|
*romsize_p, filename);
|
|
exit(1);
|
|
}
|
|
} else if (place == SEEK_END)
|
|
content -= *romsize_p;
|
|
|
|
if (!fread(content, *romsize_p, 1, file)) {
|
|
printf("failed to read %s\n", filename);
|
|
return NULL;
|
|
}
|
|
fclose(file);
|
|
return content;
|
|
}
|
|
|
|
struct cbfs_header *master_header;
|
|
uint32_t phys_start, phys_end, align, romsize;
|
|
void *offset;
|
|
|
|
void recalculate_rom_geometry(void *romarea)
|
|
{
|
|
offset = romarea + romsize - 0x100000000ULL;
|
|
master_header = (struct cbfs_header *)
|
|
phys_to_virt(*((uint32_t *) phys_to_virt(0xfffffffc)));
|
|
phys_start = (0 - romsize + ntohl(master_header->offset)) & 0xffffffff;
|
|
phys_end =
|
|
(0 - ntohl(master_header->bootblocksize) -
|
|
sizeof(struct cbfs_header)) & 0xffffffff;
|
|
align = ntohl(master_header->align);
|
|
}
|
|
|
|
void *loadrom(const char *filename)
|
|
{
|
|
void *romarea = loadfile(filename, &romsize, 0, SEEK_SET);
|
|
if (romarea == NULL)
|
|
return NULL;
|
|
recalculate_rom_geometry(romarea);
|
|
return romarea;
|
|
}
|
|
|
|
int writerom(const char *filename, void *start, uint32_t size)
|
|
{
|
|
FILE *file = fopen(filename, "wb");
|
|
if (!file) {
|
|
fprintf(stderr, "Could not open '%s' for writing: ", filename);
|
|
perror("");
|
|
return 1;
|
|
}
|
|
|
|
if (fwrite(start, size, 1, file) != 1) {
|
|
fprintf(stderr, "Could not write to '%s': ", filename);
|
|
perror("");
|
|
return 1;
|
|
}
|
|
|
|
fclose(file);
|
|
return 0;
|
|
}
|
|
|
|
int cbfs_file_header(uint32_t physaddr)
|
|
{
|
|
/* maybe improve this test */
|
|
return (strncmp(phys_to_virt(physaddr), "LARCHIVE", 8) == 0);
|
|
}
|
|
|
|
struct cbfs_file *cbfs_create_empty_file(uint32_t physaddr, uint32_t size)
|
|
{
|
|
struct cbfs_file *nextfile = (struct cbfs_file *)phys_to_virt(physaddr);
|
|
strncpy((char *)(nextfile->magic), "LARCHIVE", 8);
|
|
nextfile->len = htonl(size);
|
|
nextfile->type = htonl(0xffffffff);
|
|
nextfile->checksum = 0; // FIXME?
|
|
nextfile->offset = htonl(sizeof(struct cbfs_file) + 16);
|
|
memset(((void *)nextfile) + sizeof(struct cbfs_file), 0, 16);
|
|
return nextfile;
|
|
}
|
|
|
|
int iself(unsigned char *input)
|
|
{
|
|
Elf32_Ehdr *ehdr = (Elf32_Ehdr *) input;
|
|
return !memcmp(ehdr->e_ident, ELFMAG, 4);
|
|
}
|
|
|
|
struct filetypes_t {
|
|
uint32_t type;
|
|
const char *name;
|
|
} filetypes[] = {
|
|
{CBFS_COMPONENT_STAGE, "stage"},
|
|
{CBFS_COMPONENT_PAYLOAD, "payload"},
|
|
{CBFS_COMPONENT_OPTIONROM, "optionrom"},
|
|
{CBFS_COMPONENT_BOOTSPLASH, "bootsplash"},
|
|
{CBFS_COMPONENT_RAW, "raw"},
|
|
{CBFS_COMPONENT_VSA, "vsa"},
|
|
{CBFS_COMPONENT_MBI, "mbi"},
|
|
{CBFS_COMPONENT_MICROCODE, "microcode"},
|
|
{CBFS_COMPONENT_CMOS_DEFAULT, "cmos default"},
|
|
{CBFS_COMPONENT_DELETED, "deleted"},
|
|
{CBFS_COMPONENT_NULL, "null"}
|
|
};
|
|
|
|
void print_supported_filetypes(void)
|
|
{
|
|
int i, number = ARRAY_SIZE(filetypes);
|
|
|
|
for (i=0; i<number; i++) {
|
|
printf(" %s%c", filetypes[i].name, (i==(number-1))?'\n':',');
|
|
if ((i%8) == 7)
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
const char *strfiletype(uint32_t number)
|
|
{
|
|
int i;
|
|
for (i = 0; i < (sizeof(filetypes) / sizeof(struct filetypes_t)); i++)
|
|
if (filetypes[i].type == number)
|
|
return filetypes[i].name;
|
|
return "unknown";
|
|
}
|
|
|
|
uint64_t intfiletype(const char *name)
|
|
{
|
|
int i;
|
|
for (i = 0; i < (sizeof(filetypes) / sizeof(struct filetypes_t)); i++)
|
|
if (strcmp(filetypes[i].name, name) == 0)
|
|
return filetypes[i].type;
|
|
return -1;
|
|
}
|
|
|
|
void print_cbfs_directory(const char *filename)
|
|
{
|
|
printf
|
|
("%s: %d kB, bootblocksize %d, romsize %d, offset 0x%x\nAlignment: %d bytes\n\n",
|
|
basename((char *)filename), romsize / 1024, ntohl(master_header->bootblocksize),
|
|
romsize, ntohl(master_header->offset), align);
|
|
printf("%-30s %-10s %-12s Size\n", "Name", "Offset", "Type");
|
|
uint32_t current = phys_start;
|
|
while (current < phys_end) {
|
|
if (!cbfs_file_header(current)) {
|
|
current += align;
|
|
continue;
|
|
}
|
|
struct cbfs_file *thisfile =
|
|
(struct cbfs_file *)phys_to_virt(current);
|
|
uint32_t length = ntohl(thisfile->len);
|
|
char *fname = (char *)(phys_to_virt(current) + sizeof(struct cbfs_file));
|
|
if (strlen(fname) == 0)
|
|
fname = "(empty)";
|
|
|
|
printf("%-30s 0x%-8x %-12s %d\n", fname,
|
|
current - phys_start, strfiletype(ntohl(thisfile->type)),
|
|
length);
|
|
current =
|
|
ALIGN(current + ntohl(thisfile->len) +
|
|
ntohl(thisfile->offset), align);
|
|
}
|
|
}
|
|
|
|
int extract_file_from_cbfs(const char *filename, const char *payloadname, const char *outpath)
|
|
{
|
|
// Identify the coreboot image.
|
|
printf(
|
|
"%s: %d kB, bootblocksize %d, romsize %d, offset 0x%x\nAlignment: %d bytes\n\n",
|
|
basename((char *)filename), romsize / 1024, ntohl(master_header->bootblocksize),
|
|
romsize, ntohl(master_header->offset), align);
|
|
|
|
FILE *outfile = NULL;
|
|
uint32_t current = phys_start;
|
|
while (current < phys_end) {
|
|
if (!cbfs_file_header(current)) {
|
|
current += align;
|
|
continue;
|
|
}
|
|
|
|
// Locate the file start struct
|
|
struct cbfs_file *thisfile =
|
|
(struct cbfs_file *)phys_to_virt(current);
|
|
// And its length
|
|
uint32_t length = ntohl(thisfile->len);
|
|
// Locate the file name
|
|
char *fname = (char *)(phys_to_virt(current) + sizeof(struct cbfs_file));
|
|
|
|
// It's not the file we are looking for..
|
|
if (strcmp(fname, payloadname) != 0)
|
|
{
|
|
current =
|
|
ALIGN(current + ntohl(thisfile->len) +
|
|
ntohl(thisfile->offset), align);
|
|
continue;
|
|
}
|
|
|
|
// Else, it's our file.
|
|
printf("Found file %.30s at 0x%x, type %.12s, size %d\n", fname,
|
|
current - phys_start, strfiletype(ntohl(thisfile->type)),
|
|
length);
|
|
|
|
// If we are not dumping to stdout, open the out file.
|
|
outfile = fopen(outpath, "wb");
|
|
if (!outfile)
|
|
{
|
|
printf("Could not open the file %s for writing. Aborting.\n", outpath);
|
|
return 1;
|
|
}
|
|
|
|
if (ntohl(thisfile->type) != CBFS_COMPONENT_RAW)
|
|
{
|
|
printf("Warning: only 'raw' files are safe to extract.\n");
|
|
}
|
|
|
|
fwrite(((char *)thisfile)
|
|
+ ntohl(thisfile->offset), length, 1, outfile);
|
|
|
|
fclose(outfile);
|
|
printf("Successfully dumped the file.\n");
|
|
|
|
// We'll only dump one file.
|
|
return 0;
|
|
}
|
|
printf("File %s not found.\n", payloadname);
|
|
return 1;
|
|
}
|
|
|
|
|
|
int add_file_to_cbfs(void *content, uint32_t contentsize, uint32_t location)
|
|
{
|
|
uint32_t current = phys_start;
|
|
while (current < phys_end) {
|
|
if (!cbfs_file_header(current)) {
|
|
current += align;
|
|
continue;
|
|
}
|
|
struct cbfs_file *thisfile =
|
|
(struct cbfs_file *)phys_to_virt(current);
|
|
uint32_t length = ntohl(thisfile->len);
|
|
|
|
dprintf("at %x, %x bytes\n", current, length);
|
|
/* Is this a free chunk? */
|
|
if ((thisfile->type == CBFS_COMPONENT_DELETED)
|
|
|| (thisfile->type == CBFS_COMPONENT_NULL)) {
|
|
dprintf("null||deleted at %x, %x bytes\n", current,
|
|
length);
|
|
/* if this is the right size, and if specified, the right location, use it */
|
|
if ((contentsize <= length)
|
|
&& ((location == 0) || (current == location))) {
|
|
if (contentsize < length) {
|
|
dprintf
|
|
("this chunk is %x bytes, we need %x. create a new chunk at %x with %x bytes\n",
|
|
length, contentsize,
|
|
ALIGN(current + contentsize,
|
|
align),
|
|
length - contentsize);
|
|
uint32_t start =
|
|
ALIGN(current + contentsize, align);
|
|
uint32_t size =
|
|
current + ntohl(thisfile->offset)
|
|
+ length - start - 16 -
|
|
sizeof(struct cbfs_file);
|
|
cbfs_create_empty_file(start, size);
|
|
}
|
|
dprintf("copying data\n");
|
|
memcpy(phys_to_virt(current), content,
|
|
contentsize);
|
|
return 0;
|
|
}
|
|
if (location != 0) {
|
|
/* CBFS has the constraint that the chain always moves up in memory. so once
|
|
we're past the place we seek, we don't need to look any further */
|
|
if (current > location) {
|
|
printf
|
|
("the requested space is not available\n");
|
|
return 1;
|
|
}
|
|
|
|
/* Is the requested location inside the current chunk? */
|
|
if ((current < location)
|
|
&& ((location + contentsize) <=
|
|
(current + length))) {
|
|
/* Split it up. In the next iteration the code will be at the right place. */
|
|
dprintf("split up. new length: %x\n",
|
|
location - current -
|
|
ntohl(thisfile->offset));
|
|
thisfile->len =
|
|
htonl(location - current -
|
|
ntohl(thisfile->offset));
|
|
cbfs_create_empty_file(location,
|
|
length -
|
|
(location -
|
|
current));
|
|
}
|
|
}
|
|
}
|
|
current =
|
|
ALIGN(current + ntohl(thisfile->len) +
|
|
ntohl(thisfile->offset), align);
|
|
}
|
|
printf("Could not add the file to CBFS, it's probably too big.\n");
|
|
printf("File size: %d bytes (%d KB).\n", contentsize, contentsize/1024);
|
|
return 1;
|
|
}
|
|
|
|
/* returns new data block with cbfs_file header, suitable to dump into the ROM. location returns
|
|
the new location that points to the cbfs_file header */
|
|
void *create_cbfs_file(const char *filename, void *data, uint32_t * datasize,
|
|
uint32_t type, uint32_t * location)
|
|
{
|
|
uint32_t filename_len = ALIGN(strlen(filename) + 1, 16);
|
|
uint32_t headersize = sizeof(struct cbfs_file) + filename_len;
|
|
if ((location != 0) && (*location != 0)) {
|
|
uint32_t offset = *location % align;
|
|
/* If offset >= (headersize % align), we can stuff the header into the offset.
|
|
Otherwise the header has to be aligned itself, and put before the offset data */
|
|
if (offset >= (headersize % align)) {
|
|
offset -= (headersize % align);
|
|
} else {
|
|
offset += align - (headersize % align);
|
|
}
|
|
headersize += offset;
|
|
*location -= headersize;
|
|
}
|
|
void *newdata = malloc(*datasize + headersize);
|
|
if (!newdata) {
|
|
printf("Could not get %d bytes for CBFS file.\n", *datasize +
|
|
headersize);
|
|
exit(1);
|
|
}
|
|
memset(newdata, 0xff, *datasize + headersize);
|
|
struct cbfs_file *nextfile = (struct cbfs_file *)newdata;
|
|
strncpy((char *)(nextfile->magic), "LARCHIVE", 8);
|
|
nextfile->len = htonl(*datasize);
|
|
nextfile->type = htonl(type);
|
|
nextfile->checksum = 0; // FIXME?
|
|
nextfile->offset = htonl(headersize);
|
|
strcpy(newdata + sizeof(struct cbfs_file), filename);
|
|
memcpy(newdata + headersize, data, *datasize);
|
|
*datasize += headersize;
|
|
return newdata;
|
|
}
|
|
|
|
int create_cbfs_image(const char *romfile, uint32_t _romsize,
|
|
const char *bootblock, uint32_t align)
|
|
{
|
|
romsize = _romsize;
|
|
unsigned char *romarea = malloc(romsize);
|
|
if (!romarea) {
|
|
printf("Could not get %d bytes of memory for CBFS image.\n",
|
|
romsize);
|
|
exit(1);
|
|
}
|
|
memset(romarea, 0xff, romsize);
|
|
|
|
// Set up physical/virtual mapping
|
|
offset = romarea + romsize - 0x100000000ULL;
|
|
|
|
if (align == 0)
|
|
align = 64;
|
|
|
|
uint32_t bootblocksize = 0;
|
|
loadfile(bootblock, &bootblocksize, romarea + romsize, SEEK_END);
|
|
struct cbfs_header *master_header =
|
|
(struct cbfs_header *)(romarea + romsize - bootblocksize -
|
|
sizeof(struct cbfs_header));
|
|
master_header->magic = ntohl(0x4f524243);
|
|
master_header->version = ntohl(0x31313131);
|
|
master_header->romsize = htonl(romsize);
|
|
master_header->bootblocksize = htonl(bootblocksize);
|
|
master_header->align = htonl(align);
|
|
master_header->offset = htonl(0);
|
|
((uint32_t *) phys_to_virt(0xfffffffc))[0] =
|
|
virt_to_phys(master_header);
|
|
|
|
recalculate_rom_geometry(romarea);
|
|
|
|
cbfs_create_empty_file((0 - romsize) & 0xffffffff,
|
|
romsize - bootblocksize -
|
|
sizeof(struct cbfs_header) -
|
|
sizeof(struct cbfs_file) - 16);
|
|
|
|
writerom(romfile, romarea, romsize);
|
|
return 0;
|
|
}
|
|
|
|
static int in_segment(int addr, int size, int gran)
|
|
{
|
|
return ((addr & ~(gran - 1)) == ((addr + size) & ~(gran - 1)));
|
|
}
|
|
|
|
uint32_t cbfs_find_location(const char *romfile, uint32_t filesize,
|
|
const char *filename, uint32_t alignment)
|
|
{
|
|
loadrom(romfile);
|
|
int filename_size = strlen(filename);
|
|
|
|
int headersize =
|
|
sizeof(struct cbfs_file) + ALIGN(filename_size + 1,
|
|
16) + sizeof(struct cbfs_stage);
|
|
int totalsize = headersize + filesize;
|
|
|
|
uint32_t current = phys_start;
|
|
while (current < phys_end) {
|
|
if (!cbfs_file_header(current)) {
|
|
current += align;
|
|
continue;
|
|
}
|
|
struct cbfs_file *thisfile =
|
|
(struct cbfs_file *)phys_to_virt(current);
|
|
|
|
uint32_t top =
|
|
current + ntohl(thisfile->len) + ntohl(thisfile->offset);
|
|
if (((ntohl(thisfile->type) == 0x0)
|
|
|| (ntohl(thisfile->type) == 0xffffffff))
|
|
&& (ntohl(thisfile->len) + ntohl(thisfile->offset) >=
|
|
totalsize)) {
|
|
if (in_segment
|
|
(current + headersize, filesize, alignment))
|
|
return current + headersize;
|
|
if ((ALIGN(current, alignment) + filesize < top)
|
|
&& (ALIGN(current, alignment) - headersize >
|
|
current)
|
|
&& in_segment(ALIGN(current, alignment), filesize,
|
|
alignment))
|
|
return ALIGN(current, alignment);
|
|
if ((ALIGN(current, alignment) + alignment + filesize <
|
|
top)
|
|
&& (ALIGN(current, alignment) + alignment -
|
|
headersize > current)
|
|
&& in_segment(ALIGN(current, alignment) + alignment,
|
|
filesize, alignment))
|
|
return ALIGN(current, alignment) + alignment;
|
|
}
|
|
current =
|
|
ALIGN(current + ntohl(thisfile->len) +
|
|
ntohl(thisfile->offset), align);
|
|
}
|
|
return 0;
|
|
}
|