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cbfs: Port cbfs_load() and cbfs_map() to new API

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This patch adapts cbfs_load() and cbfs_map() to use the new CBFS API
directly, rather than through cbfs_boot_locate(). For cbfs_load() this
means that attribute metadata does not need to be read twice.

Change-Id: I754cc34b1c1471129e15475aa0f1891e02439a02
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39305
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
This commit is contained in:
Julius Werner
2020-10-01 18:25:49 -07:00
committed by Patrick Georgi
parent 834b3ecd7c
commit d17ce41e29
3 changed files with 55 additions and 18 deletions
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36
src/lib/cbfs.c
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@@ -72,18 +72,16 @@ int cbfs_boot_locate(struct cbfsf *fh, const char *name, uint32_t *type)
void *cbfs_map(const char *name, size_t *size_out)
{
struct cbfsf fh;
size_t fsize;
struct region_device rdev;
union cbfs_mdata mdata;
if (cbfs_boot_locate(&fh, name, NULL))
if (cbfs_boot_lookup(name, false, &mdata, &rdev))
return NULL;
fsize = region_device_sz(&fh.data);
if (size_out != NULL)
*size_out = fsize;
*size_out = region_device_sz(&rdev);
return rdev_mmap(&fh.data, 0, fsize);
return rdev_mmap_full(&rdev);
}
int cbfs_unmap(void *mapping)
@@ -285,21 +283,23 @@ void *cbfs_boot_map_optionrom_revision(uint16_t vendor, uint16_t device, uint8_t
size_t cbfs_load(const char *name, void *buf, size_t buf_size)
{
struct cbfsf fh;
uint32_t compression_algo;
size_t decompressed_size;
struct region_device rdev;
union cbfs_mdata mdata;
if (cbfs_boot_locate(&fh, name, NULL) < 0)
if (cbfs_boot_lookup(name, false, &mdata, &rdev))
return 0;
if (cbfsf_decompression_info(&fh, &compression_algo,
&decompressed_size)
< 0
|| decompressed_size > buf_size)
return 0;
uint32_t compression = CBFS_COMPRESS_NONE;
const struct cbfs_file_attr_compression *attr = cbfs_find_attr(&mdata,
CBFS_FILE_ATTR_TAG_COMPRESSION, sizeof(*attr));
if (attr) {
compression = be32toh(attr->compression);
if (buf_size < be32toh(attr->decompressed_size))
return 0;
}
return cbfs_load_and_decompress(&fh.data, 0, region_device_sz(&fh.data),
buf, buf_size, compression_algo);
return cbfs_load_and_decompress(&rdev, 0, region_device_sz(&rdev),
buf, buf_size, compression);
}
int cbfs_prog_stage_load(struct prog *pstage)