[coreboot-gerrit] Patch set updated for coreboot: 5f53409 Add an xdr function for the cbfs_file header

[Alexandru Gagniuc]

Alexandru Gagniuc ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5120

-gerrit

commit 5f53409fe35a68d9e43c9f8d96f352b2e4642b7a
Author: Ronald G. Minnich 
Date:   Tue Feb 4 17:35:44 2014 -0800

Add an xdr function for the cbfs_file header

And use it in fit.c and remove one more use of htonl.

Change-Id: Ibf18dcc0a7f08d75c2374115de0db7a4bf64ec1e
    Signed-off-by: Ronald G. Minnich 
---
 util/cbfstool/cbfs.h   |  3 +++
 util/cbfstool/common.c |  9 +++++++++
 util/cbfstool/common.h |  1 +
 util/cbfstool/fit.c    | 19 +++++++++++++++----
 util/cbfstool/xdr.c    |  9 +++++++++
 5 files changed, 37 insertions(+), 4 deletions(-)

diff --git a/util/cbfstool/cbfs.h b/util/cbfstool/cbfs.h
index 527c867..1839646 100644
--- a/util/cbfstool/cbfs.h
+++ b/util/cbfstool/cbfs.h
@@ -126,6 +126,9 @@ uint32_t get_cbfs_entry_type(const char *name, uint32_t default_value);
 const char *get_cbfs_entry_type_name(uint32_t type);
 uint32_t get_cbfs_compression(const char *name, uint32_t unknown);

+/* common.c */
+void cbfs_file_get_header(struct buffer *buf, struct cbfs_file *file);
+
 /* elfheaders.c */
 int
 elf_headers(const struct buffer *pinput,
diff --git a/util/cbfstool/common.c b/util/cbfstool/common.c
index 98d9517..f594e84 100644
--- a/util/cbfstool/common.c
+++ b/util/cbfstool/common.c
@@ -103,6 +103,15 @@ void buffer_delete(struct buffer *buffer) {
    buffer->size = 0;
 }

+void cbfs_file_get_header(struct buffer *buf, struct cbfs_file *file)
+{
+	bgets(buf, &file->magic, sizeof(file->magic));
+	file->len = xdr_be.get32(buf);
+	file->type = xdr_be.get32(buf);
+	file->checksum = xdr_be.get32(buf);
+	file->offset = xdr_be.get32(buf);
+}
+
 static struct {
    uint32_t arch;
    const char *name;
diff --git a/util/cbfstool/common.h b/util/cbfstool/common.h
index 5bcbcbe..5d3b900 100644
--- a/util/cbfstool/common.h
+++ b/util/cbfstool/common.h
@@ -110,5 +110,6 @@ struct xdr {

/* xdr.c */
 extern struct xdr xdr_le, xdr_be;
+int bgets(struct buffer *input, void *output, size_t len);

#endif
diff --git a/util/cbfstool/fit.c b/util/cbfstool/fit.c
index a368dad..84f0bff 100644
--- a/util/cbfstool/fit.c
+++ b/util/cbfstool/fit.c
@@ -188,17 +188,28 @@ static void add_microcodde_entries(struct cbfs_image *image,
    }
 }

+static int fit_header(void *ptr, uint32_t *current_offset, uint32_t *file_length)
+{
+	struct buffer buf;
+	struct cbfs_file header;
+	buf.data = ptr;
+	buf.size = sizeof(header);
+	cbfs_file_get_header(&buf, &header);
+	*current_offset = header.offset;
+	*file_length = header.len;
+	return 0;
+}
+
 static int parse_microcode_blob(struct cbfs_image *image,
                                 struct cbfs_file *mcode_file,
                                 struct microcode_entry *mcus, int *total_mcus)
 {
    int num_mcus;
-	int current_offset;
-	int file_length;
+	uint32_t current_offset;
+	uint32_t file_length;

current_offset = (int)((char *)mcode_file - image->buffer.data);
-	current_offset += ntohl(mcode_file->offset);
-	file_length = ntohl(mcode_file->len);
+	fit_header(mcode_file, &current_offset, &file_length);

num_mcus = 0;
    while (file_length > sizeof(struct microcode_header))
diff --git a/util/cbfstool/xdr.c b/util/cbfstool/xdr.c
index d779675..ddc282e 100644
--- a/util/cbfstool/xdr.c
+++ b/util/cbfstool/xdr.c
@@ -25,6 +25,15 @@
 #include <stdint.h>
 #include "common.h"

+int bgets(struct buffer *input, void *output, size_t len)
+{
+	len = input->size < len ? input->size : len;
+	memmove(output, input->data, len);
+	input->data += len;
+	input->size -= len;
+	return len;
+}
+
 /* The assumption in all this code is that we're given a pointer to enough data.
  * Hence, we do not check for underflow.
  */