summaryrefslogtreecommitdiff
path: root/src/commonlib
diff options
context:
space:
mode:
Diffstat (limited to 'src/commonlib')
-rw-r--r--src/commonlib/Makefile.inc7
-rw-r--r--src/commonlib/cbfs.c347
-rw-r--r--src/commonlib/include/commonlib/cbfs.h75
3 files changed, 0 insertions, 429 deletions
diff --git a/src/commonlib/Makefile.inc b/src/commonlib/Makefile.inc
index 9347f88f9c..2477e07268 100644
--- a/src/commonlib/Makefile.inc
+++ b/src/commonlib/Makefile.inc
@@ -27,13 +27,6 @@ romstage-$(CONFIG_PLATFORM_USES_FSP2_0) += fsp_relocate.c
endif
ramstage-$(CONFIG_PLATFORM_USES_FSP2_0) += fsp_relocate.c
-bootblock-y += cbfs.c
-verstage-y += cbfs.c
-romstage-y += cbfs.c
-ramstage-y += cbfs.c
-smm-y += cbfs.c
-postcar-y += cbfs.c
-
bootblock-y += bsd/cbfs_private.c
verstage-y += bsd/cbfs_private.c
romstage-y += bsd/cbfs_private.c
diff --git a/src/commonlib/cbfs.c b/src/commonlib/cbfs.c
deleted file mode 100644
index e7f800c67a..0000000000
--- a/src/commonlib/cbfs.c
+++ /dev/null
@@ -1,347 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-#include <commonlib/cbfs.h>
-#include <commonlib/endian.h>
-#include <commonlib/helpers.h>
-#include <string.h>
-#include <vb2_sha.h>
-
-static size_t cbfs_next_offset(const struct region_device *cbfs,
- const struct cbfsf *f)
-{
- size_t offset;
-
- if (f == NULL)
- return 0;
-
- /* The region_device objects store absolute offsets over the whole
- * region. Therefore a relative offset needs to be calculated. */
- offset = rdev_relative_offset(cbfs, &f->data);
- offset += region_device_sz(&f->data);
-
- return ALIGN_UP(offset, CBFS_ALIGNMENT);
-}
-
-static int cbfs_end(const struct region_device *cbfs, size_t offset)
-{
- if (offset >= region_device_sz(cbfs))
- return 1;
-
- return 0;
-}
-
-int cbfs_for_each_file(const struct region_device *cbfs,
- const struct cbfsf *prev, struct cbfsf *fh)
-{
- size_t offset;
-
- offset = cbfs_next_offset(cbfs, prev);
-
- /* Try to scan the entire cbfs region looking for file name. */
- while (1) {
- struct cbfs_file file;
- const size_t fsz = sizeof(file);
-
- DEBUG("Checking offset %zx\n", offset);
-
- /* End of region. */
- if (cbfs_end(cbfs, offset))
- return 1;
-
- /* Can't read file. Nothing else to do but bail out. */
- if (rdev_readat(cbfs, &file, offset, fsz) != fsz)
- break;
-
- if (memcmp(file.magic, CBFS_FILE_MAGIC, sizeof(file.magic))) {
- offset++;
- offset = ALIGN_UP(offset, CBFS_ALIGNMENT);
- continue;
- }
-
- file.len = read_be32(&file.len);
- file.offset = read_be32(&file.offset);
-
- DEBUG("File @ offset %zx size %x\n", offset, file.len);
-
- /* Keep track of both the metadata and the data for the file. */
- if (rdev_chain(&fh->metadata, cbfs, offset, file.offset))
- break;
-
- if (rdev_chain(&fh->data, cbfs, offset + file.offset, file.len))
- break;
-
- /* Success. */
- return 0;
- }
-
- return -1;
-}
-
-size_t cbfs_for_each_attr(void *metadata, size_t metadata_size,
- size_t last_offset)
-{
- struct cbfs_file_attribute *attr;
-
- if (!last_offset) {
- struct cbfs_file *file = metadata;
- size_t start_offset = read_be32(&file->attributes_offset);
- if (start_offset <= sizeof(struct cbfs_file) ||
- start_offset + sizeof(*attr) > metadata_size)
- return 0;
- return start_offset;
- }
-
- attr = metadata + last_offset;
- size_t next_offset = last_offset + read_be32(&attr->len);
-
- if (next_offset + sizeof(*attr) > metadata_size)
- return 0;
- return next_offset;
-}
-
-int cbfsf_decompression_info(struct cbfsf *fh, uint32_t *algo, size_t *size)
-{
- size_t metadata_size = region_device_sz(&fh->metadata);
- void *metadata = rdev_mmap_full(&fh->metadata);
- size_t offs = 0;
-
- if (!metadata)
- return -1;
-
- while ((offs = cbfs_for_each_attr(metadata, metadata_size, offs))) {
- struct cbfs_file_attr_compression *attr = metadata + offs;
- if (read_be32(&attr->tag) != CBFS_FILE_ATTR_TAG_COMPRESSION)
- continue;
-
- *algo = read_be32(&attr->compression);
- *size = read_be32(&attr->decompressed_size);
- rdev_munmap(&fh->metadata, metadata);
- return 0;
- }
-
- *algo = CBFS_COMPRESS_NONE;
- *size = region_device_sz(&fh->data);
- rdev_munmap(&fh->metadata, metadata);
- return 0;
-}
-
-int cbfsf_file_type(struct cbfsf *fh, uint32_t *ftype)
-{
- const size_t sz = sizeof(*ftype);
-
- if (rdev_readat(&fh->metadata, ftype,
- offsetof(struct cbfs_file, type), sz) != sz)
- return -1;
-
- *ftype = read_be32(ftype);
-
- return 0;
-}
-
-int cbfs_locate(struct cbfsf *fh, const struct region_device *cbfs,
- const char *name, uint32_t *type)
-{
- struct cbfsf *prev;
-
- LOG("Locating '%s'\n", name);
-
- prev = NULL;
-
- while (1) {
- int ret;
- char *fname;
- int name_match;
- const size_t fsz = sizeof(struct cbfs_file);
-
- ret = cbfs_for_each_file(cbfs, prev, fh);
- prev = fh;
-
- /* Either failed to read or hit the end of the region. */
- if (ret < 0 || ret > 0)
- break;
-
- fname = rdev_mmap(&fh->metadata, fsz,
- region_device_sz(&fh->metadata) - fsz);
-
- if (fname == NULL)
- break;
-
- name_match = !strcmp(fname, name);
- rdev_munmap(&fh->metadata, fname);
-
- if (!name_match) {
- DEBUG(" Unmatched '%s' at %zx\n", fname,
- rdev_relative_offset(cbfs, &fh->metadata));
- continue;
- }
-
- if (type != NULL) {
- uint32_t ftype;
-
- if (cbfsf_file_type(fh, &ftype))
- break;
-
- if (*type != 0 && *type != ftype) {
- DEBUG(" Unmatched type %x at %zx\n", ftype,
- rdev_relative_offset(cbfs,
- &fh->metadata));
- continue;
- }
- // *type being 0 means we want to know ftype.
- // We could just do a blind assignment but
- // if type is pointing to read-only memory
- // that might be bad.
- if (*type == 0)
- *type = ftype;
- }
-
- LOG("Found @ offset %zx size %zx\n",
- rdev_relative_offset(cbfs, &fh->metadata),
- region_device_sz(&fh->data));
-
- /* Success. */
- return 0;
- }
-
- LOG("'%s' not found.\n", name);
- return -1;
-}
-
-static int cbfs_extend_hash_buffer(struct vb2_digest_context *ctx,
- void *buf, size_t sz)
-{
- return vb2_digest_extend(ctx, buf, sz);
-}
-
-static int cbfs_extend_hash(struct vb2_digest_context *ctx,
- const struct region_device *rdev)
-{
- uint8_t buffer[1024];
- size_t sz_left;
- size_t offset;
-
- sz_left = region_device_sz(rdev);
- offset = 0;
-
- while (sz_left) {
- int rv;
- size_t block_sz = MIN(sz_left, sizeof(buffer));
-
- if (rdev_readat(rdev, buffer, offset, block_sz) != block_sz)
- return VB2_ERROR_UNKNOWN;
-
- rv = cbfs_extend_hash_buffer(ctx, buffer, block_sz);
-
- if (rv)
- return rv;
-
- sz_left -= block_sz;
- offset += block_sz;
- }
-
- return VB2_SUCCESS;
-}
-
-/* Include offsets of child regions within the parent into the hash. */
-static int cbfs_extend_hash_with_offset(struct vb2_digest_context *ctx,
- const struct region_device *p,
- const struct region_device *c)
-{
- int32_t soffset;
- int rv;
-
- soffset = rdev_relative_offset(p, c);
-
- if (soffset < 0)
- return VB2_ERROR_UNKNOWN;
-
- /* All offsets in big endian format. */
- write_be32(&soffset, soffset);
-
- rv = cbfs_extend_hash_buffer(ctx, &soffset, sizeof(soffset));
-
- if (rv)
- return rv;
-
- return cbfs_extend_hash(ctx, c);
-}
-
-/* Hash in the potential CBFS header sitting at the beginning of the CBFS
- * region as well as relative offset at the end. */
-static int cbfs_extend_hash_master_header(struct vb2_digest_context *ctx,
- const struct region_device *cbfs)
-{
- struct region_device rdev;
- int rv;
-
- if (rdev_chain(&rdev, cbfs, 0, sizeof(struct cbfs_header)))
- return VB2_ERROR_UNKNOWN;
-
- rv = cbfs_extend_hash_with_offset(ctx, cbfs, &rdev);
-
- if (rv)
- return rv;
-
- /* Include potential relative offset at end of region. */
- if (rdev_chain(&rdev, cbfs, region_device_sz(cbfs) - sizeof(int32_t),
- sizeof(int32_t)))
- return VB2_ERROR_UNKNOWN;
-
- return cbfs_extend_hash_with_offset(ctx, cbfs, &rdev);
-}
-
-int cbfs_vb2_hash_contents(const struct region_device *cbfs,
- enum vb2_hash_algorithm hash_alg, void *digest,
- size_t digest_sz)
-{
- struct vb2_digest_context ctx;
- int rv;
- struct cbfsf f;
- struct cbfsf *prev;
- struct cbfsf *fh;
-
- rv = vb2_digest_init(&ctx, hash_alg);
-
- if (rv)
- return rv;
-
- rv = cbfs_extend_hash_master_header(&ctx, cbfs);
- if (rv)
- return rv;
-
- prev = NULL;
- fh = &f;
-
- while (1) {
- uint32_t ftype;
-
- rv = cbfs_for_each_file(cbfs, prev, fh);
- prev = fh;
-
- if (rv < 0)
- return VB2_ERROR_UNKNOWN;
-
- /* End of CBFS. */
- if (rv > 0)
- break;
-
- rv = cbfs_extend_hash_with_offset(&ctx, cbfs, &fh->metadata);
-
- if (rv)
- return rv;
-
- /* Include data contents in hash if file is non-empty. */
- if (cbfsf_file_type(fh, &ftype))
- return VB2_ERROR_UNKNOWN;
-
- if (ftype == CBFS_TYPE_DELETED || ftype == CBFS_TYPE_NULL)
- continue;
-
- rv = cbfs_extend_hash_with_offset(&ctx, cbfs, &fh->data);
-
- if (rv)
- return rv;
- }
-
- return vb2_digest_finalize(&ctx, digest, digest_sz);
-}
diff --git a/src/commonlib/include/commonlib/cbfs.h b/src/commonlib/include/commonlib/cbfs.h
deleted file mode 100644
index 6565c1dcd3..0000000000
--- a/src/commonlib/include/commonlib/cbfs.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-#ifndef _COMMONLIB_CBFS_H_
-#define _COMMONLIB_CBFS_H_
-
-#include <commonlib/bsd/cbfs_private.h>
-#include <commonlib/region.h>
-#include <vb2_api.h>
-
-/* Object representing cbfs files. */
-struct cbfsf {
- struct region_device metadata;
- struct region_device data;
- union cbfs_mdata mdata;
-};
-
-/* Locate file by name and optional type. Returns 0 on success else < 0 on
- * error.*/
-int cbfs_locate(struct cbfsf *fh, const struct region_device *cbfs,
- const char *name, uint32_t *type);
-
-static inline void cbfs_file_data(struct region_device *data,
- const struct cbfsf *file)
-{
- rdev_chain_full(data, &file->data);
-}
-
-static inline void cbfs_file_metadata(struct region_device *metadata,
- const struct cbfsf *file)
-{
- rdev_chain_full(metadata, &file->metadata);
-}
-
-/*
- * Provide a handle to each cbfs file within a cbfs. The prev pointer represents
- * the previous file (NULL on first invocation). The next object gets filled
- * out with the next file. This returns < 0 on error, 0 on finding the next
- * file, and > 0 at end of cbfs.
- */
-int cbfs_for_each_file(const struct region_device *cbfs,
- const struct cbfsf *prev, struct cbfsf *fh);
-
-/*
- * Return the offset for each CBFS attribute in a CBFS file metadata region.
- * The metadata must already be fully mapped by the caller. Will return the
- * offset (relative to the start of the metadata) or 0 when there are no
- * further attributes. Should be called with 0 to begin, then always with
- * the previously returned value until it returns 0.
- */
-size_t cbfs_for_each_attr(void *metadata, size_t metadata_size,
- size_t last_offset);
-
-/*
- * Find out the decompression algorithm and decompressed size of a non-stage
- * CBFS file (by parsing its metadata attributes), and return them with
- * out-parameters. Returns 0 on success and < 0 on error.
- */
-int cbfsf_decompression_info(struct cbfsf *fh, uint32_t *algo, size_t *size);
-
-/*
- * Return the CBFS file type as out-parameter.
- * Returns 0 on success and < 0 on error.
- */
-int cbfsf_file_type(struct cbfsf *fh, uint32_t *ftype);
-
-/*
- * Perform the vb2 hash over the CBFS region skipping empty file contents.
- * Caller is responsible for providing the hash algorithm as well as storage
- * for the final digest. Return 0 on success or non-zero on error.
- */
-int cbfs_vb2_hash_contents(const struct region_device *cbfs,
- enum vb2_hash_algorithm hash_alg, void *digest,
- size_t digest_sz);
-
-#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 08:10:38 +0000