Aaron Durbin (adurbin@chromium.org) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/16203
-gerrit
commit 847d2b050d71c8f2d0cd52cc4dfa94b65397d7ba Author: Aaron Durbin adurbin@chromium.org Date: Fri Aug 12 12:42:04 2016 -0500
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 --- src/include/fmap.h | 4 ++++ src/lib/fmap.c | 10 ++++++++++ 2 files changed, 14 insertions(+)
diff --git a/src/include/fmap.h b/src/include/fmap.h index 684a05c..5834831 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 bf99037..9602134 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;