fsp/elog: Create a logging frontend

In order to support fsp-less machines we need to be able to log errors
using a BMC or some other mechanism. Currently the error logging code
is tightly coupled to the platform making it difficult to add
different platforms.

This patch factors out the generic parts of the error logging code in
preparation for adding different logging backends. It also adds a
generic mechanism for pre-allocating a specific number of objects.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/include/pool.h b/include/pool.h
new file mode 100644
index 0000000..89ef967
--- /dev/null
+++ b/include/pool.h
@@ -0,0 +1,21 @@
+#ifndef __POOL_H
+#define __POOL_H
+
+#include <ccan/list/list.h>
+#include <stddef.h>
+
+struct pool {
+	void *buf;
+	size_t obj_size;
+	struct list_head free_list;
+	int free_count;
+	int reserved;
+};
+
+enum pool_priority {POOL_NORMAL, POOL_HIGH};
+
+void* pool_get(struct pool *pool, enum pool_priority priority);
+void pool_free_object(struct pool *pool, void *obj);
+int pool_init(struct pool *pool, size_t obj_size, int count, int reserved);
+
+#endif /* __POOL_H */