[coreboot-gerrit] Change in coreboot[master]: lib/fmap: Add hook function.

[Philipp Deppenwiese (Code Review)]

Philipp Deppenwiese has uploaded this change for review. ( https://review.coreboot.org/24966

Change subject: lib/fmap: Add hook function.
......................................................................

lib/fmap: Add hook function.

* Add hook function for accessing rdev by
  calling locate functions.

Change-Id: I699eec879e2c61976832c394b70cd6cfa5bae584
Signed-off-by: zaolin 
---
M src/include/fmap.h
M src/lib/fmap.c
2 files changed, 20 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/66/24966/1

diff --git a/src/include/fmap.h b/src/include/fmap.h
index 5834831..300f962 100644
--- a/src/include/fmap.h
+++ b/src/include/fmap.h
@@ -19,6 +19,9 @@
 #include <commonlib/region.h>
 #include <commonlib/fmap_serialized.h>

+/* Hook function for access to rdev in locate functions */
+void hook_fmap_rdev(const char *name, const struct region_device *area);
+
 /* Locate the fmap directory. Return 0 on success, < 0 on error. */
 int find_fmap_directory(struct region_device *fmrd);

diff --git a/src/lib/fmap.c b/src/lib/fmap.c
index 9602134..e4231e0 100644
--- a/src/lib/fmap.c
+++ b/src/lib/fmap.c
@@ -29,6 +29,11 @@

static int fmap_print_once CAR_GLOBAL;

+void __attribute__((weak))
+hook_fmap_rdev(const char *name, const struct region_device *area)
+{
+}
+
 int find_fmap_directory(struct region_device *fmrd)
 {
    const struct region_device *boot;
@@ -77,7 +82,12 @@
    if (fmap_locate_area(name, &ar))
    	return -1;

-	return boot_device_ro_subregion(&ar, area);
+	if (boot_device_ro_subregion(&ar, area))
+		return -1;
+
+	hook_fmap_rdev(name, area);
+
+	return 0;
 }

int fmap_locate_area_as_rdev_rw(const char *name, struct region_device *area)
@@ -87,7 +97,12 @@
    if (fmap_locate_area(name, &ar))
    	return -1;

-	return boot_device_rw_subregion(&ar, area);
+	if (boot_device_rw_subregion(&ar, area))
+		return -1;
+
+	hook_fmap_rdev(name, area);
+
+	return 0;
 }

int fmap_locate_area(const char *name, struct region *ar)