cbmem: add coreboot table records for each cbmem entry
In order to not expose the cbmem data structures to userland
that are used by coreboot internally add each of the cbmem
entries to a coreboot table record. The payload ABI uses
coreboot tables so this just provides a shortcut for cbmem
entries which were manually added previously by doing the
work on behalf of all entries.
A cursor structure and associated functions are added to
the imd code for walking the entries in order to be placed
in the coreboot tables. Additionally a struct lb_cbmem_entry
is added that lists the base address, size, and id of the
cbmem entry.
BUG=chrome-os-partner:43731
BRANCH=None
TEST=Booted glados. View coreboot table entries with cbmem.
Change-Id: I125940aa1898c3e99077ead0660eff8aa905b13b
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11757
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
diff --git a/src/include/imd.h b/src/include/imd.h
index 90a0dd5..6575312 100644
--- a/src/include/imd.h
+++ b/src/include/imd.h
@@ -120,6 +120,9 @@
/* Returns pointer to region described by entry or NULL on failure. */
void *imd_entry_at(const struct imd *imd, const struct imd_entry *entry);
+/* Returns id for the imd entry. */
+uint32_t imd_entry_id(const struct imd *imd, const struct imd_entry *entry);
+
/* Attempt to remove entry from imd. */
int imd_entry_remove(const struct imd *imd, const struct imd_entry *entry);
@@ -132,6 +135,13 @@
int imd_print_entries(const struct imd *imd, const struct imd_lookup *lookup,
size_t size);
+struct imd_cursor;
+/* Initialize an imd_cursor object to walk the IMD entries. */
+int imd_cursor_init(const struct imd *imd, struct imd_cursor *cursor);
+
+/* Retrieve the next imd entry the cursor is referencing. Returns NULL when
+ * no more entries exist. */
+const struct imd_entry *imd_cursor_next(struct imd_cursor *cursor);
/*
* The struct imd is a handle for working with an in-memory directory.
@@ -148,4 +158,10 @@
struct imdr sm;
};
+struct imd_cursor {
+ size_t current_imdr;
+ size_t current_entry;
+ const struct imdr *imdr[2];
+};
+
#endif /* _IMD_H_ */