libpayload: Add larfptr function

Add a function to get a pointer to the start of a LAR entry.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Acked-by: Myles Watson <mylesgw@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3337 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 10 insertions, 0 deletions

diff --git a/payloads/libpayload/libc/lar.c b/payloads/libpayload/libc/lar.c
index 65b503d1c8..6ae4052039 100644
--- a/payloads/libpayload/libc/lar.c
+++ b/payloads/libpayload/libc/lar.c
@@ -218,6 +218,16 @@ int larstat(struct LAR *lar, const char *path, struct larstat *buf)
 	return 0;
 }
 
+void * larfptr(struct LAR *lar, const char *filename)
+{
+	struct lar_header *header = get_header_by_name(lar, filename);
+
+	if (header == NULL)
+		return NULL;
+
+	return (void *) ((u8 *) header + ntohl(header->offset));
+}
+
 struct LFILE * lfopen(struct LAR *lar, const char *filename)
 {
 	struct LFILE *file;