libflash: Add ipmi-hiomap

ipmi-hiomap implements the PNOR access control protocol formerly known
as "the mbox protocol" but uses IPMI instead of the AST LPC mailbox as a
transport. As there is no-longer any mailbox involved in this alternate
implementation the old protocol name is quite misleading, and so it has
been renamed to "the hiomap protoocol" (Host I/O Mapping protocol). The
same commands and events are used though this client-side implementation
assumes v2 of the protocol is supported by the BMC.

The code is a heavily-reworked copy of the mbox-flash source and is
introduced this way to allow for the mbox implementation's eventual
removal.

mbox-flash should in theory be renamed to mbox-hiomap for consistency,
but as it is on life-support effective immediately we may as well just
remove it entirely when the time is right.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
[stewart: prlog debug over prerror for mbox fallback, fix indent]
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/libflash/ipmi-hiomap.h b/libflash/ipmi-hiomap.h
new file mode 100644
index 00000000..4742b7d8
--- /dev/null
+++ b/libflash/ipmi-hiomap.h
@@ -0,0 +1,28 @@
+/* Copyright 2018 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * 	http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ * implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __LIBFLASH_IPMI_HIOMAP_H
+#define __LIBFLASH_IPMI_HIOMAP_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "blocklevel.h"
+
+int ipmi_hiomap_init(struct blocklevel_device **bl);
+void ipmi_hiomap_exit(struct blocklevel_device *bl);
+
+#endif /* __LIBFLASH_IPMI_HIOMAP_H */