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cbfstool: Use cbfs_image api for "add" command. 

The "add" command is compatible with all legacy usage. Also, to support
platforms without top-aligned address, all address-type params (-b, -H, -l) can
now be ROM offset (address < 0x8000000) or x86 top-aligned address (address >
0x80000000).

Example:
	cbfstool coreboot.rom add -f config -n config -t raw -b 0x2000
	cbfstool coreboot.rom add -f stage -n newstage -b 0xffffd1c0

Verified boot-able on both ARM(snow) and x86(QEMU) system.

Change-Id: I485e4e88b5e269494a4b138e0a83f793ffc5a084
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: http://review.coreboot.org/2216
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Hung-Te Lin 2013-01-29 10:24:00 +08:00 committed by Stefan Reinauer
parent f56c73f1e1
commit 5f3eb26d85
3 changed files with 242 additions and 31 deletions
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183
util/cbfstool/cbfs_image.c
View File

@ -246,6 +246,180 @@ int cbfs_image_delete(struct cbfs_image *image) {
return 0;
}
/* Tries to add an entry with its data (CBFS_SUBHEADER) at given offset. */
static int cbfs_add_entry_at(struct cbfs_image *image,
struct cbfs_file *entry,
uint32_t size,
const char *name,
uint32_t type,
const void *data,
uint32_t content_offset) {
struct cbfs_file *next = cbfs_find_next_entry(image, entry);
uint32_t addr = cbfs_get_entry_addr(image, entry),
addr_next = cbfs_get_entry_addr(image, next);
uint32_t header_size = cbfs_calculate_file_header_size(name),
min_entry_size = cbfs_calculate_file_header_size("");
uint32_t len, target;
uint32_t align = ntohl(image->header->align);
target = content_offset - header_size;
if (target % align)
target -= target % align;
if (target < addr) {
ERROR("No space to hold cbfs_file header.");
return -1;
}
// Process buffer BEFORE content_offset.
if (target - addr > min_entry_size) {
DEBUG("|min|...|header|content|... <create new entry>\n");
len = target - addr - min_entry_size;
cbfs_create_empty_entry(image, entry, len, "");
if (verbose > 1) cbfs_print_entry_info(image, entry, stderr);
entry = cbfs_find_next_entry(image, entry);
addr = cbfs_get_entry_addr(image, entry);
}
len = size + (content_offset - addr - header_size);
cbfs_create_empty_entry(image, entry, len, name);
if (len != size) {
DEBUG("|..|header|content|... <use offset to create entry>\n");
DEBUG("before: offset=0x%x, len=0x%x\n",
ntohl(entry->offset), ntohl(entry->len));
// TODO reset expanded name buffer to 0xFF.
entry->offset = htonl(ntohl(entry->offset) + (len - size));
entry->len = htonl(size);
DEBUG("after: offset=0x%x, len=0x%x\n",
ntohl(entry->offset), ntohl(entry->len));
}
// Ready to fill data into entry.
assert(ntohl(entry->len) == size);
entry->type = htonl(type);
DEBUG("content_offset: 0x%x, entry location: %x\n",
content_offset, (int)((char*)CBFS_SUBHEADER(entry) -
image->buffer.data));
assert((char*)CBFS_SUBHEADER(entry) - image->buffer.data ==
content_offset);
memcpy(CBFS_SUBHEADER(entry), data, size);
if (verbose > 1) cbfs_print_entry_info(image, entry, stderr);
// Process buffer AFTER entry.
entry = cbfs_find_next_entry(image, entry);
addr = cbfs_get_entry_addr(image, entry);
assert(addr < addr_next);
if (addr_next - addr < min_entry_size) {
DEBUG("No space after content to keep CBFS structure.\n");
return -1;
}
len = addr_next - addr - min_entry_size;
cbfs_create_empty_entry(image, entry, len, "");
if (verbose > 1) cbfs_print_entry_info(image, entry, stderr);
return 0;
}
int cbfs_add_entry(struct cbfs_image *image, struct buffer *buffer,
const char *name, uint32_t type, uint32_t content_offset) {
uint32_t entry_type;
uint32_t addr, addr_next;
struct cbfs_file *entry, *next;
uint32_t header_size, need_size, new_size;
header_size = cbfs_calculate_file_header_size(name);
need_size = header_size + buffer->size;
DEBUG("cbfs_add_entry('%s'@0x%x) => need_size = %u+%zu=%u\n",
name, content_offset, header_size, buffer->size, need_size);
if (IS_TOP_ALIGNED_ADDRESS(content_offset)) {
// legacy cbfstool takes top-aligned address.
uint32_t romsize = ntohl(image->header->romsize);
INFO("Converting top-aligned address 0x%x to offset: 0x%x\n",
content_offset, content_offset + romsize);
content_offset += romsize;
}
// Merge empty entries.
DEBUG("(trying to merge empty entries...)\n");
cbfs_walk(image, cbfs_merge_empty_entry, NULL);
for (entry = cbfs_find_first_entry(image);
entry && cbfs_is_valid_entry(entry);
entry = cbfs_find_next_entry(image, entry)) {
entry_type = ntohl(entry->type);
if (entry_type != CBFS_COMPONENT_NULL)
continue;
addr = cbfs_get_entry_addr(image, entry);
next = cbfs_find_next_entry(image, entry);
addr_next = cbfs_get_entry_addr(image, next);
DEBUG("cbfs_add_entry: space at 0x%x+0x%x(%d) bytes\n",
addr, addr_next - addr, addr_next - addr);
if (addr + need_size > addr_next)
continue;
// Can we simply put object here?
if (!content_offset || content_offset == addr + header_size) {
DEBUG("Filling new entry data (%zd bytes).\n",
buffer->size);
cbfs_create_empty_entry(image, entry, buffer->size,
name);
entry->type = htonl(type);
memcpy(CBFS_SUBHEADER(entry), buffer->data, buffer->size);
if (verbose)
cbfs_print_entry_info(image, entry, stderr);
// setup new entry
DEBUG("Seting new empty entry.\n");
entry = cbfs_find_next_entry(image, entry);
new_size = (cbfs_get_entry_addr(image, next) -
cbfs_get_entry_addr(image, entry));
new_size -= cbfs_calculate_file_header_size("");
DEBUG("new size: %d\n", new_size);
cbfs_create_empty_entry(image, entry, new_size, "");
if (verbose)
cbfs_print_entry_info(image, entry, stderr);
return 0;
}
// We need to put content here, and the case is really
// complicated...
assert(content_offset);
if (addr_next < content_offset) {
DEBUG("Not for specified offset yet");
continue;
} else if (addr > content_offset) {
DEBUG("Exceed specified content_offset.");
break;
} else if (addr + header_size > content_offset) {
ERROR("Not enough space for header.\n");
break;
} else if (content_offset + buffer->size > addr_next) {
ERROR("Not enough space for content.\n");
break;
}
// TODO there are more few tricky cases that we may
// want to fit by altering offset.
DEBUG("section 0x%x+0x%x for content_offset 0x%x.\n",
addr, addr_next - addr, content_offset);
if (cbfs_add_entry_at(image, entry, buffer->size, name, type,
buffer->data, content_offset) == 0) {
return 0;
}
break;
}
ERROR("Could not add [%s, %zd bytes (%zd KB)@0x%x]; too big?\n",
buffer->name, buffer->size, buffer->size / 1024, content_offset);
return -1;
}
struct cbfs_file *cbfs_get_entry(struct cbfs_image *image, const char *name) {
struct cbfs_file *entry;
for (entry = cbfs_find_first_entry(image);
@ -566,6 +740,15 @@ int cbfs_is_valid_entry(struct cbfs_file *entry) {
sizeof(entry->magic)) == 0);
}
int cbfs_init_entry(struct cbfs_file *entry,
struct buffer *buffer) {
memset(entry, 0, sizeof(*entry));
memcpy(entry->magic, CBFS_FILE_MAGIC, sizeof(entry->magic));
entry->len = htonl(buffer->size);
entry->offset = htonl(sizeof(*entry) + strlen(buffer->name) + 1);
return 0;
}
int cbfs_create_empty_entry(struct cbfs_image *image, struct cbfs_file *entry,
size_t len, const char *name) {
memset(entry, CBFS_CONTENT_DEFAULT_VALUE, sizeof(*entry));

6
util/cbfstool/cbfs_image.h
View File

@ -62,6 +62,12 @@ struct cbfs_file *cbfs_get_entry(struct cbfs_image *image, const char *name);
int cbfs_export_entry(struct cbfs_image *image, const char *entry_name,
const char *filename);
/* Adds an entry to CBFS image by given name and type. If content_offset is
* non-zero, try to align "content" (CBFS_SUBHEADER(p)) at content_offset.
* Returns 0 on success, otherwise non-zero. */
int cbfs_add_entry(struct cbfs_image *image, struct buffer *buffer,
const char *name, uint32_t type, uint32_t content_offset);
/* Removes an entry from CBFS image. Returns 0 on success, otherwise non-zero. */
int cbfs_remove_entry(struct cbfs_image *image, const char *name);

84
util/cbfstool/cbfstool.c
View File

@ -58,62 +58,84 @@ static struct param {
.algo = CBFS_COMPRESS_NONE,
};
static int cbfs_add(void)
{
uint32_t filesize = 0;
void *rom, *filedata, *cbfsfile;
typedef int (*convert_buffer_t)(struct buffer *buffer);
if (!param.filename) {
static int cbfs_add_component(const char *cbfs_name,
const char *filename,
const char *name,
uint32_t type,
uint32_t offset,
convert_buffer_t convert) {
struct cbfs_image image;
struct buffer buffer;
if (!filename) {
ERROR("You need to specify -f/--filename.\n");
return 1;
}
if (!param.name) {
if (!name) {
ERROR("You need to specify -n/--name.\n");
return 1;
}
if (param.type == 0) {
if (type == 0) {
ERROR("You need to specify a valid -t/--type.\n");
return 1;
}
rom = loadrom(param.cbfs_name);
if (rom == NULL) {
ERROR("Could not load ROM image '%s'.\n",
param.cbfs_name);
if (buffer_from_file(&buffer, filename) != 0) {
ERROR("Could not load file '%s'.\n", filename);
return 1;
}
filedata = loadfile(param.filename, &filesize, 0, SEEK_SET);
if (filedata == NULL) {
ERROR("Could not load file '%s'.\n",
param.filename);
free(rom);
if (convert && convert(&buffer) != 0) {
ERROR("Failed to parse file '%s'.\n", filename);
buffer_delete(&buffer);
return 1;
}
cbfsfile = create_cbfs_file(param.name, filedata, &filesize,
param.type, &param.baseaddress);
free(filedata);
if (add_file_to_cbfs(cbfsfile, filesize, param.baseaddress)) {
ERROR("Adding file '%s' failed.\n", param.filename);
free(cbfsfile);
free(rom);
return 1;
}
if (writerom(param.cbfs_name, rom, romsize)) {
free(cbfsfile);
free(rom);
if (cbfs_image_from_file(&image, cbfs_name) != 0) {
ERROR("Could not load ROM image '%s'.\n", cbfs_name);
buffer_delete(&buffer);
return 1;
}
free(cbfsfile);
free(rom);
if (cbfs_get_entry(&image, name)) {
ERROR("'%s' already in ROM image.\n", name);
buffer_delete(&buffer);
cbfs_image_delete(&image);
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);
cbfs_image_delete(&image);
return 1;
}
if (cbfs_image_write_file(&image, cbfs_name) != 0) {
buffer_delete(&buffer);
cbfs_image_delete(&image);
return 1;
}
buffer_delete(&buffer);
cbfs_image_delete(&image);
return 0;
}
static int cbfs_add(void)
{
return cbfs_add_component(param.cbfs_name,
param.filename,
param.name,
param.type,
param.baseaddress,
NULL);
}
static int cbfs_add_payload(void)
{
uint32_t filesize = 0;