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util/cbfstool: Enable adding precompressed files to cbfs 

cbfstool ... add ... -c precompression assumes the input file to be
created by cbfs-compression-tool's compress command and uses that to add
the file with correct metadata.

When adding the locale_*.bin files to Chrome OS images, this provides a
nice speedup (since we can parallelize the precompression and avoid
compressing everything twice) while creating a bit-identical file.

Change-Id: Iadd106672c505909528b55e2cd43c914b95b6c6d
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: https://review.coreboot.org/18102
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Patrick Georgi 2017-01-11 18:38:11 +01:00 committed by Patrick Georgi
parent c88d16baaf
commit ecaa570b60
1 changed files with 46 additions and 23 deletions
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69
util/cbfstool/cbfstool.c
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@ -79,6 +79,7 @@ static struct param {
bool machine_parseable;
int fit_empty_entries;
enum comp_algo compression;
int precompression;
enum vb2_hash_algorithm hash;
/* for linux payloads */
char *initrd;
@ -439,33 +440,51 @@ static int cbfstool_convert_raw(struct buffer *buffer,
unused uint32_t *offset, struct cbfs_file *header)
{
char *compressed;
int compressed_size;
int decompressed_size, compressed_size;
comp_func_ptr compress;
comp_func_ptr compress = compression_function(param.compression);
if (!compress)
return -1;
compressed = calloc(buffer->size, 1);
if (compress(buffer->data, buffer->size,
compressed, &compressed_size)) {
WARN("Compression failed - disabled\n");
} else {
struct cbfs_file_attr_compression *attrs =
(struct cbfs_file_attr_compression *)
cbfs_add_file_attr(header,
CBFS_FILE_ATTR_TAG_COMPRESSION,
sizeof(struct cbfs_file_attr_compression));
if (attrs == NULL)
decompressed_size = buffer->size;
if (param.precompression) {
param.compression = le32toh(((uint32_t *)buffer->data)[0]);
decompressed_size = le32toh(((uint32_t *)buffer->data)[1]);
compressed_size = buffer->size - 8;
compressed = malloc(compressed_size);
if (!compressed)
return -1;
memcpy(compressed, buffer->data + 8, compressed_size);
} else {
compress = compression_function(param.compression);
if (!compress)
return -1;
compressed = calloc(buffer->size, 1);
if (!compressed)
return -1;
attrs->compression = htonl(param.compression);
attrs->decompressed_size = htonl(buffer->size);
free(buffer->data);
buffer->data = compressed;
buffer->size = compressed_size;
header->len = htonl(buffer->size);
if (compress(buffer->data, buffer->size,
compressed, &compressed_size)) {
WARN("Compression failed - disabled\n");
free(compressed);
return 0;
}
}
struct cbfs_file_attr_compression *attrs =
(struct cbfs_file_attr_compression *)
cbfs_add_file_attr(header,
CBFS_FILE_ATTR_TAG_COMPRESSION,
sizeof(struct cbfs_file_attr_compression));
if (attrs == NULL) {
free(compressed);
return -1;
}
attrs->compression = htonl(param.compression);
attrs->decompressed_size = htonl(decompressed_size);
free(buffer->data);
buffer->data = compressed;
buffer->size = compressed_size;
header->len = htonl(buffer->size);
return 0;
}
@ -1347,6 +1366,10 @@ int main(int argc, char **argv)
optarg);
break;
case 'c': {
if (strcmp(optarg, "precompression") == 0) {
param.precompression = 1;
break;
}
int algo = cbfs_parse_comp_algo(optarg);
if (algo >= 0)
param.compression = algo;