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authorAaron Durbin <adurbin@chromium.org>2016-08-12 12:42:04 -0500
committerMartin Roth <martinroth@google.com>2016-08-19 18:17:04 +0200
commitbccaab86582957483b0b7e50ead308ed1bff815d (patch)
tree05b35ef30784e6cd1d8507d509275d13dd91c812
parente4cc8cd00b3b39eecac604cc402b8111f8fd5657 (diff)
downloadcoreboot-bccaab86582957483b0b7e50ead308ed1bff815d.tar.xz
lib/fmap: provide RW region device support
Explicitly provide a RW view of an FMAP region. This is required for platforms which have separate implementations of a RO boot device and a RW boot device. BUG=chrome-os-partner:56151 Change-Id: Ibafa3dc534f53a3d90487f3190c0f8a2e82858c2 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/16203 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com>
-rw-r--r--src/include/fmap.h4
-rw-r--r--src/lib/fmap.c10
2 files changed, 14 insertions, 0 deletions
diff --git a/src/include/fmap.h b/src/include/fmap.h
index 684a05c607..5834831489 100644
--- a/src/include/fmap.h
+++ b/src/include/fmap.h
@@ -27,6 +27,10 @@ int find_fmap_directory(struct region_device *fmrd);
* 0 on success, < 0 on error. */
int fmap_locate_area_as_rdev(const char *name, struct region_device *area);
+/* Just like fmap_locate_area_as_rdev(), however the region device is
+ * created from the RW boot device. */
+int fmap_locate_area_as_rdev_rw(const char *name, struct region_device *area);
+
/* Locate the named area in the fmap and fill in a region with the
* offset and size of that area within the boot media. Return 0 on success,
* < 0 on error. */
diff --git a/src/lib/fmap.c b/src/lib/fmap.c
index bf99037f54..9602134d94 100644
--- a/src/lib/fmap.c
+++ b/src/lib/fmap.c
@@ -80,6 +80,16 @@ int fmap_locate_area_as_rdev(const char *name, struct region_device *area)
return boot_device_ro_subregion(&ar, area);
}
+int fmap_locate_area_as_rdev_rw(const char *name, struct region_device *area)
+{
+ struct region ar;
+
+ if (fmap_locate_area(name, &ar))
+ return -1;
+
+ return boot_device_rw_subregion(&ar, area);
+}
+
int fmap_locate_area(const char *name, struct region *ar)
{
struct region_device fmrd;