pldm/ibm/libpldm: Import oem IBM libpldm library

This library implements IBM OEM commands support for PLDM and specially
encode and decode APIs for in-band readFile and writeFile commands.

The source is located here:
https://github.com/openbmc/pldm/tree/master/oem/ibm/libpldm and use as is,
without any update.

The oem IBM libpldm code is integrated into the folder ./pldm/ibm/libpldm
as a set of sources, compilated if the compiler flag CONFIG_PLDM is set.

Signed-off-by: Christophe Lombard <clombard@linux.ibm.com>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Reza Arbab <arbab@linux.ibm.com>

5 files changed, 1249 insertions, 0 deletions

diff --git a/pldm/libpldm/oem/ibm/Makefile.inc b/pldm/libpldm/oem/ibm/Makefile.inc
new file mode 100644
index 0000000..e107539
--- /dev/null
+++ b/pldm/libpldm/oem/ibm/Makefile.inc
@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+# Copyright 2022 IBM Corp.
+
+LIBPLDM_IBM_DIR ?= pldm/libpldm/oem/ibm
+SUBDIRS += $(LIBPLDM_IBM_DIR)
+
+LIBPLDM_IBM_OBJS = file_io.o host.o platform.o
+
+CPPFLAGS += -I$(SRC)/pldm/include/ \
+	-I$(SRC)/pldm/include/libpldm/ \
+	-I$(SRC)/pldm/include/libpldm/oem/ibm/
+
+CFLAGS_$(LIBPLDM_IBM_DIR)/ = -Wno-error \
+			-Wno-declaration-after-statement \
+			-Wno-strict-prototypes
+
+LIBPLDM_IBM = $(LIBPLDM_IBM_DIR)/built-in.a
+
+$(LIBPLDM_IBM): $(LIBPLDM_IBM_OBJS:%=$(LIBPLDM_IBM_DIR)/%)
diff --git a/pldm/libpldm/oem/ibm/README.skiboot b/pldm/libpldm/oem/ibm/README.skiboot
new file mode 100644
index 0000000..c76bc43
--- /dev/null
+++ b/pldm/libpldm/oem/ibm/README.skiboot
@@ -0,0 +1,15 @@
+skiboot/pldm/ibm/libpldm/ is a minimally modified version of upstream
+ibm/libpldm/ that is distributed with the openbmc project
+hosted at https://github.com/openbmc/pldm.git
+
+This version is taken from pldm.git commit 8fadc9e03fdb ("pldmtool: Fix
+tool to show the oem entities") by copying most of files from the
+pldm/oem/ibm/libpldm directory.
+
+The only modifications from the upstream source are the additions of
+this file, Makefile.inc which has been derived from the original
+Makefile.inc, an update of platform_oem_ibm.c (change an include
+definition) and the removal of several unnecessary folders and files.
+
+Local libpldm changes should be kept to a minimum, and submitted
+upstream if possible.
diff --git a/pldm/libpldm/oem/ibm/file_io.c b/pldm/libpldm/oem/ibm/file_io.c
new file mode 100644
index 0000000..79132a1
--- /dev/null
+++ b/pldm/libpldm/oem/ibm/file_io.c
@@ -0,0 +1,1057 @@
+#include "libpldm/file_io.h"
+#include "base.h"
+#include <endian.h>
+#include <string.h>
+
+int decode_rw_file_memory_req(const struct pldm_msg *msg, size_t payload_length,
+			      uint32_t *file_handle, uint32_t *offset,
+			      uint32_t *length, uint64_t *address)
+{
+	if (msg == NULL || file_handle == NULL || offset == NULL ||
+	    length == NULL || address == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_RW_FILE_MEM_REQ_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_read_write_file_memory_req *request =
+	    (struct pldm_read_write_file_memory_req *)msg->payload;
+
+	*file_handle = le32toh(request->file_handle);
+	*offset = le32toh(request->offset);
+	*length = le32toh(request->length);
+	*address = le64toh(request->address);
+
+	return PLDM_SUCCESS;
+}
+
+int encode_rw_file_memory_resp(uint8_t instance_id, uint8_t command,
+			       uint8_t completion_code, uint32_t length,
+			       struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_RESPONSE;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = command;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_read_write_file_memory_resp *response =
+	    (struct pldm_read_write_file_memory_resp *)msg->payload;
+	response->completion_code = completion_code;
+	if (response->completion_code == PLDM_SUCCESS) {
+		response->length = htole32(length);
+	}
+
+	return PLDM_SUCCESS;
+}
+
+int encode_rw_file_memory_req(uint8_t instance_id, uint8_t command,
+			      uint32_t file_handle, uint32_t offset,
+			      uint32_t length, uint64_t address,
+			      struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_REQUEST;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = command;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_read_write_file_memory_req *req =
+	    (struct pldm_read_write_file_memory_req *)msg->payload;
+	req->file_handle = htole32(file_handle);
+	req->offset = htole32(offset);
+	req->length = htole32(length);
+	req->address = htole64(address);
+	return PLDM_SUCCESS;
+}
+
+int decode_rw_file_memory_resp(const struct pldm_msg *msg,
+			       size_t payload_length, uint8_t *completion_code,
+			       uint32_t *length)
+{
+	if (msg == NULL || length == NULL || completion_code == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_RW_FILE_MEM_RESP_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_read_write_file_memory_resp *response =
+	    (struct pldm_read_write_file_memory_resp *)msg->payload;
+	*completion_code = response->completion_code;
+	if (*completion_code == PLDM_SUCCESS) {
+		*length = le32toh(response->length);
+	}
+
+	return PLDM_SUCCESS;
+}
+
+int decode_get_file_table_req(const struct pldm_msg *msg, size_t payload_length,
+			      uint32_t *transfer_handle,
+			      uint8_t *transfer_opflag, uint8_t *table_type)
+{
+	if (msg == NULL || transfer_handle == NULL || transfer_opflag == NULL ||
+	    table_type == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_GET_FILE_TABLE_REQ_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_get_file_table_req *request =
+	    (struct pldm_get_file_table_req *)msg->payload;
+
+	*transfer_handle = le32toh(request->transfer_handle);
+	*transfer_opflag = request->operation_flag;
+	*table_type = request->table_type;
+
+	return PLDM_SUCCESS;
+}
+
+int encode_get_file_table_resp(uint8_t instance_id, uint8_t completion_code,
+			       uint32_t next_transfer_handle,
+			       uint8_t transfer_flag, const uint8_t *table_data,
+			       size_t table_size, struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_RESPONSE;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_GET_FILE_TABLE;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_get_file_table_resp *response =
+	    (struct pldm_get_file_table_resp *)msg->payload;
+	response->completion_code = completion_code;
+
+	if (completion_code == PLDM_SUCCESS) {
+		response->next_transfer_handle = htole32(next_transfer_handle);
+		response->transfer_flag = transfer_flag;
+		memcpy(response->table_data, table_data, table_size);
+	}
+
+	return PLDM_SUCCESS;
+}
+
+int encode_get_file_table_req(uint8_t instance_id, uint32_t transfer_handle,
+			      uint8_t transfer_opflag, uint8_t table_type,
+			      struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_REQUEST;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_GET_FILE_TABLE;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_get_file_table_req *request =
+	    (struct pldm_get_file_table_req *)msg->payload;
+
+	request->transfer_handle = htole32(transfer_handle);
+	request->operation_flag = transfer_opflag;
+	request->table_type = table_type;
+	return PLDM_SUCCESS;
+}
+
+int decode_get_file_table_resp(const struct pldm_msg *msg,
+			       size_t payload_length, uint8_t *completion_code,
+			       uint32_t *next_transfer_handle,
+			       uint8_t *transfer_flag,
+			       uint8_t *file_table_data_start_offset,
+			       size_t *file_table_length)
+{
+	if (msg == NULL || transfer_flag == NULL ||
+	    next_transfer_handle == NULL || completion_code == NULL ||
+	    file_table_data_start_offset == NULL || file_table_length == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length <= PLDM_GET_FILE_TABLE_MIN_RESP_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	*completion_code = msg->payload[0];
+
+	if (PLDM_SUCCESS != *completion_code) {
+		return PLDM_SUCCESS;
+	}
+
+	struct pldm_get_file_table_resp *response =
+	    (struct pldm_get_file_table_resp *)msg->payload;
+
+	*next_transfer_handle = le32toh(response->next_transfer_handle);
+	*transfer_flag = response->transfer_flag;
+	*file_table_data_start_offset = sizeof(*completion_code) +
+					sizeof(*next_transfer_handle) +
+					sizeof(*transfer_flag);
+	*file_table_length =
+	    payload_length - PLDM_GET_FILE_TABLE_MIN_RESP_BYTES;
+
+	return PLDM_SUCCESS;
+}
+
+int decode_read_file_req(const struct pldm_msg *msg, size_t payload_length,
+			 uint32_t *file_handle, uint32_t *offset,
+			 uint32_t *length)
+{
+	if (msg == NULL || file_handle == NULL || offset == NULL ||
+	    length == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_READ_FILE_REQ_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_read_file_req *request =
+	    (struct pldm_read_file_req *)msg->payload;
+
+	*file_handle = le32toh(request->file_handle);
+	*offset = le32toh(request->offset);
+	*length = le32toh(request->length);
+
+	return PLDM_SUCCESS;
+}
+
+int encode_read_file_req(uint8_t instance_id, uint32_t file_handle,
+			 uint32_t offset, uint32_t length, struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (length == 0) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_REQUEST;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_READ_FILE;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_read_file_req *request =
+	    (struct pldm_read_file_req *)msg->payload;
+
+	request->file_handle = htole32(file_handle);
+	request->offset = htole32(offset);
+	request->length = htole32(length);
+
+	return PLDM_SUCCESS;
+}
+
+int decode_read_file_resp(const struct pldm_msg *msg, size_t payload_length,
+			  uint8_t *completion_code, uint32_t *length,
+			  size_t *file_data_offset)
+{
+	if (msg == NULL || completion_code == NULL || length == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length < PLDM_READ_FILE_RESP_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_read_file_resp *response =
+	    (struct pldm_read_file_resp *)msg->payload;
+
+	*completion_code = response->completion_code;
+	if (*completion_code == PLDM_SUCCESS) {
+		*length = le32toh(response->length);
+		if (payload_length != PLDM_READ_FILE_RESP_BYTES + *length) {
+			return PLDM_ERROR_INVALID_LENGTH;
+		}
+		*file_data_offset = sizeof(*completion_code) + sizeof(*length);
+	}
+
+	return PLDM_SUCCESS;
+}
+
+int encode_read_file_resp(uint8_t instance_id, uint8_t completion_code,
+			  uint32_t length, struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_RESPONSE;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_READ_FILE;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_read_file_resp *response =
+	    (struct pldm_read_file_resp *)msg->payload;
+	response->completion_code = completion_code;
+
+	if (response->completion_code == PLDM_SUCCESS) {
+		response->length = htole32(length);
+	}
+
+	return PLDM_SUCCESS;
+}
+
+int decode_write_file_req(const struct pldm_msg *msg, size_t payload_length,
+			  uint32_t *file_handle, uint32_t *offset,
+			  uint32_t *length, size_t *file_data_offset)
+{
+	if (msg == NULL || file_handle == NULL || length == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length < PLDM_WRITE_FILE_REQ_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_write_file_req *request =
+	    (struct pldm_write_file_req *)msg->payload;
+
+	*file_handle = le32toh(request->file_handle);
+	*offset = le32toh(request->offset);
+	*length = le32toh(request->length);
+	if (payload_length != PLDM_WRITE_FILE_REQ_BYTES + *length) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+	*file_data_offset =
+	    sizeof(*file_handle) + sizeof(*offset) + sizeof(*length);
+
+	return PLDM_SUCCESS;
+}
+
+int encode_write_file_req(uint8_t instance_id, uint32_t file_handle,
+			  uint32_t offset, uint32_t length,
+			  struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (length == 0) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_REQUEST;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_WRITE_FILE;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_write_file_req *request =
+	    (struct pldm_write_file_req *)msg->payload;
+
+	request->file_handle = htole32(file_handle);
+	request->offset = htole32(offset);
+	request->length = htole32(length);
+
+	return PLDM_SUCCESS;
+}
+
+int decode_write_file_resp(const struct pldm_msg *msg, size_t payload_length,
+			   uint8_t *completion_code, uint32_t *length)
+{
+	if (msg == NULL || completion_code == NULL || length == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_WRITE_FILE_RESP_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_write_file_resp *response =
+	    (struct pldm_write_file_resp *)msg->payload;
+
+	*completion_code = le32toh(response->completion_code);
+	if (response->completion_code == PLDM_SUCCESS) {
+		*length = le32toh(response->length);
+	}
+
+	return PLDM_SUCCESS;
+}
+
+int encode_write_file_resp(uint8_t instance_id, uint8_t completion_code,
+			   uint32_t length, struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_RESPONSE;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_WRITE_FILE;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_write_file_resp *response =
+	    (struct pldm_write_file_resp *)msg->payload;
+	response->completion_code = completion_code;
+
+	if (response->completion_code == PLDM_SUCCESS) {
+		response->length = htole32(length);
+	}
+
+	return PLDM_SUCCESS;
+}
+
+int decode_rw_file_by_type_memory_req(const struct pldm_msg *msg,
+				      size_t payload_length,
+				      uint16_t *file_type,
+				      uint32_t *file_handle, uint32_t *offset,
+				      uint32_t *length, uint64_t *address)
+{
+	if (msg == NULL || file_type == NULL || file_handle == NULL ||
+	    offset == NULL || length == NULL || address == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_RW_FILE_BY_TYPE_MEM_REQ_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_read_write_file_by_type_memory_req *request =
+	    (struct pldm_read_write_file_by_type_memory_req *)msg->payload;
+	*file_type = le16toh(request->file_type);
+	*file_handle = le32toh(request->file_handle);
+	*offset = le32toh(request->offset);
+	*length = le32toh(request->length);
+	*address = le64toh(request->address);
+
+	return PLDM_SUCCESS;
+}
+
+int encode_rw_file_by_type_memory_resp(uint8_t instance_id, uint8_t command,
+				       uint8_t completion_code, uint32_t length,
+				       struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_RESPONSE;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = command;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_read_write_file_by_type_memory_resp *response =
+	    (struct pldm_read_write_file_by_type_memory_resp *)msg->payload;
+	response->completion_code = completion_code;
+	if (response->completion_code == PLDM_SUCCESS) {
+		response->length = htole32(length);
+	}
+
+	return PLDM_SUCCESS;
+}
+
+int encode_rw_file_by_type_memory_req(uint8_t instance_id, uint8_t command,
+				      uint16_t file_type, uint32_t file_handle,
+				      uint32_t offset, uint32_t length,
+				      uint64_t address, struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_REQUEST;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = command;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_read_write_file_by_type_memory_req *req =
+	    (struct pldm_read_write_file_by_type_memory_req *)msg->payload;
+	req->file_type = htole16(file_type);
+	req->file_handle = htole32(file_handle);
+	req->offset = htole32(offset);
+	req->length = htole32(length);
+	req->address = htole64(address);
+
+	return PLDM_SUCCESS;
+}
+
+int decode_rw_file_by_type_memory_resp(const struct pldm_msg *msg,
+				       size_t payload_length,
+				       uint8_t *completion_code,
+				       uint32_t *length)
+{
+	if (msg == NULL || length == NULL || completion_code == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_RW_FILE_BY_TYPE_MEM_RESP_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_read_write_file_by_type_memory_resp *response =
+	    (struct pldm_read_write_file_by_type_memory_resp *)msg->payload;
+	*completion_code = response->completion_code;
+	if (*completion_code == PLDM_SUCCESS) {
+		*length = le32toh(response->length);
+	}
+
+	return PLDM_SUCCESS;
+}
+
+int decode_new_file_req(const struct pldm_msg *msg, size_t payload_length,
+			uint16_t *file_type, uint32_t *file_handle,
+			uint64_t *length)
+{
+	if (msg == NULL || file_type == NULL || file_handle == NULL ||
+	    length == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_NEW_FILE_REQ_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_new_file_req *request =
+	    (struct pldm_new_file_req *)msg->payload;
+	*file_type = le16toh(request->file_type);
+	*file_handle = le32toh(request->file_handle);
+	*length = le64toh(request->length);
+
+	return PLDM_SUCCESS;
+}
+
+int encode_new_file_resp(uint8_t instance_id, uint8_t completion_code,
+			 struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_RESPONSE;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_NEW_FILE_AVAILABLE;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_new_file_resp *response =
+	    (struct pldm_new_file_resp *)msg->payload;
+	response->completion_code = completion_code;
+
+	return PLDM_SUCCESS;
+}
+
+int encode_new_file_req(uint8_t instance_id, uint16_t file_type,
+			uint32_t file_handle, uint64_t length,
+			struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_REQUEST;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_NEW_FILE_AVAILABLE;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_new_file_req *req =
+	    (struct pldm_new_file_req *)msg->payload;
+	req->file_type = htole16(file_type);
+	req->file_handle = htole32(file_handle);
+	req->length = htole64(length);
+
+	return PLDM_SUCCESS;
+}
+
+int decode_new_file_resp(const struct pldm_msg *msg, size_t payload_length,
+			 uint8_t *completion_code)
+{
+	if (msg == NULL || completion_code == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_NEW_FILE_RESP_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_new_file_resp *response =
+	    (struct pldm_new_file_resp *)msg->payload;
+	*completion_code = response->completion_code;
+
+	return PLDM_SUCCESS;
+}
+
+int decode_rw_file_by_type_req(const struct pldm_msg *msg,
+			       size_t payload_length, uint16_t *file_type,
+			       uint32_t *file_handle, uint32_t *offset,
+			       uint32_t *length)
+{
+	if (msg == NULL || file_type == NULL || file_handle == NULL ||
+	    offset == NULL || length == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length < PLDM_RW_FILE_BY_TYPE_REQ_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_read_write_file_by_type_req *request =
+	    (struct pldm_read_write_file_by_type_req *)msg->payload;
+	*file_type = le16toh(request->file_type);
+	*file_handle = le32toh(request->file_handle);
+	*offset = le32toh(request->offset);
+	*length = le32toh(request->length);
+
+	return PLDM_SUCCESS;
+}
+
+int encode_rw_file_by_type_resp(uint8_t instance_id, uint8_t command,
+				uint8_t completion_code, uint32_t length,
+				struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+	if (command != PLDM_READ_FILE_BY_TYPE &&
+	    command != PLDM_WRITE_FILE_BY_TYPE) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_RESPONSE;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = command;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_read_write_file_by_type_resp *response =
+	    (struct pldm_read_write_file_by_type_resp *)msg->payload;
+	response->completion_code = completion_code;
+	if (response->completion_code == PLDM_SUCCESS) {
+		response->length = htole32(length);
+	}
+
+	return PLDM_SUCCESS;
+}
+
+int encode_rw_file_by_type_req(uint8_t instance_id, uint8_t command,
+			       uint16_t file_type, uint32_t file_handle,
+			       uint32_t offset, uint32_t length,
+			       struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+	if (command != PLDM_READ_FILE_BY_TYPE &&
+	    command != PLDM_WRITE_FILE_BY_TYPE) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_REQUEST;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = command;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_read_write_file_by_type_req *req =
+	    (struct pldm_read_write_file_by_type_req *)msg->payload;
+	req->file_type = htole16(file_type);
+	req->file_handle = htole32(file_handle);
+	req->offset = htole32(offset);
+	req->length = htole32(length);
+
+	return PLDM_SUCCESS;
+}
+
+int decode_rw_file_by_type_resp(const struct pldm_msg *msg,
+				size_t payload_length, uint8_t *completion_code,
+				uint32_t *length)
+{
+	if (msg == NULL || length == NULL || completion_code == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_RW_FILE_BY_TYPE_RESP_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_read_write_file_by_type_resp *response =
+	    (struct pldm_read_write_file_by_type_resp *)msg->payload;
+	*completion_code = response->completion_code;
+	if (*completion_code == PLDM_SUCCESS) {
+		*length = le32toh(response->length);
+	}
+
+	return PLDM_SUCCESS;
+}
+
+int decode_file_ack_req(const struct pldm_msg *msg, size_t payload_length,
+			uint16_t *file_type, uint32_t *file_handle,
+			uint8_t *file_status)
+{
+	if (msg == NULL || file_type == NULL || file_handle == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_FILE_ACK_REQ_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_file_ack_req *request =
+	    (struct pldm_file_ack_req *)msg->payload;
+	*file_type = le16toh(request->file_type);
+	*file_handle = le32toh(request->file_handle);
+	*file_status = request->file_status;
+
+	return PLDM_SUCCESS;
+}
+
+int encode_file_ack_resp(uint8_t instance_id, uint8_t completion_code,
+			 struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_RESPONSE;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_FILE_ACK;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_file_ack_resp *response =
+	    (struct pldm_file_ack_resp *)msg->payload;
+	response->completion_code = completion_code;
+
+	return PLDM_SUCCESS;
+}
+
+int encode_file_ack_req(uint8_t instance_id, uint16_t file_type,
+			uint32_t file_handle, uint8_t file_status,
+			struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_REQUEST;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_FILE_ACK;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_file_ack_req *req =
+	    (struct pldm_file_ack_req *)msg->payload;
+	req->file_type = htole16(file_type);
+	req->file_handle = htole32(file_handle);
+	req->file_status = file_status;
+
+	return PLDM_SUCCESS;
+}
+
+int decode_file_ack_resp(const struct pldm_msg *msg, size_t payload_length,
+			 uint8_t *completion_code)
+{
+	if (msg == NULL || completion_code == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_FILE_ACK_RESP_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_file_ack_resp *response =
+	    (struct pldm_file_ack_resp *)msg->payload;
+	*completion_code = response->completion_code;
+
+	return PLDM_SUCCESS;
+}
+
+int encode_file_ack_with_meta_data_req(
+    uint8_t instance_id, uint16_t file_type, uint32_t file_handle,
+    uint8_t file_status, uint32_t file_meta_data_1, uint32_t file_meta_data_2,
+    uint32_t file_meta_data_3, uint32_t file_meta_data_4, struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_REQUEST;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_FILE_ACK_WITH_META_DATA;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_file_ack_with_meta_data_req *req =
+	    (struct pldm_file_ack_with_meta_data_req *)msg->payload;
+	req->file_type = htole16(file_type);
+	req->file_handle = htole32(file_handle);
+	req->file_status = file_status;
+	req->file_meta_data_1 = htole32(file_meta_data_1);
+	req->file_meta_data_2 = htole32(file_meta_data_2);
+	req->file_meta_data_3 = htole32(file_meta_data_3);
+	req->file_meta_data_4 = htole32(file_meta_data_4);
+
+	return PLDM_SUCCESS;
+}
+
+int decode_file_ack_with_meta_data_resp(const struct pldm_msg *msg,
+					size_t payload_length,
+					uint8_t *completion_code)
+{
+	if (msg == NULL || completion_code == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_FILE_ACK_WITH_META_DATA_RESP_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_file_ack_with_meta_data_resp *response =
+	    (struct pldm_file_ack_with_meta_data_resp *)msg->payload;
+	*completion_code = response->completion_code;
+
+	return PLDM_SUCCESS;
+}
+
+int decode_file_ack_with_meta_data_req(
+    const struct pldm_msg *msg, size_t payload_length, uint16_t *file_type,
+    uint32_t *file_handle, uint8_t *file_status, uint32_t *file_meta_data_1,
+    uint32_t *file_meta_data_2, uint32_t *file_meta_data_3,
+    uint32_t *file_meta_data_4)
+{
+	if (msg == NULL || file_type == NULL || file_handle == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_FILE_ACK_WITH_META_DATA_REQ_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_file_ack_with_meta_data_req *request =
+	    (struct pldm_file_ack_with_meta_data_req *)msg->payload;
+	*file_type = le16toh(request->file_type);
+	*file_handle = le32toh(request->file_handle);
+	*file_status = request->file_status;
+	*file_meta_data_1 = le32toh(request->file_meta_data_1);
+	*file_meta_data_2 = le32toh(request->file_meta_data_2);
+	*file_meta_data_3 = le32toh(request->file_meta_data_3);
+	*file_meta_data_4 = le32toh(request->file_meta_data_4);
+
+	return PLDM_SUCCESS;
+}
+
+int encode_file_ack_with_meta_data_resp(uint8_t instance_id,
+					uint8_t completion_code,
+					struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_RESPONSE;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_FILE_ACK_WITH_META_DATA;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_file_ack_with_meta_data_resp *response =
+	    (struct pldm_file_ack_with_meta_data_resp *)msg->payload;
+	response->completion_code = completion_code;
+
+	return PLDM_SUCCESS;
+}
+
+int encode_new_file_with_metadata_req(
+    uint8_t instance_id, uint16_t file_type, uint32_t file_handle,
+    uint64_t length, uint32_t file_meta_data_1, uint32_t file_meta_data_2,
+    uint32_t file_meta_data_3, uint32_t file_meta_data_4, struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_REQUEST;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_NEW_FILE_AVAILABLE_WITH_META_DATA;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_new_file_with_metadata_req *req =
+	    (struct pldm_new_file_with_metadata_req *)msg->payload;
+	req->file_type = htole16(file_type);
+	req->file_handle = htole32(file_handle);
+	req->length = htole64(length);
+	req->file_meta_data_1 = htole32(file_meta_data_1);
+	req->file_meta_data_2 = htole32(file_meta_data_2);
+	req->file_meta_data_3 = htole32(file_meta_data_3);
+	req->file_meta_data_4 = htole32(file_meta_data_4);
+
+	return PLDM_SUCCESS;
+}
+
+int decode_new_file_with_metadata_resp(const struct pldm_msg *msg,
+				       size_t payload_length,
+				       uint8_t *completion_code)
+{
+	if (msg == NULL || completion_code == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length !=
+	    PLDM_NEW_FILE_AVAILABLE_WITH_META_DATA_RESP_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_new_file_with_metadata_resp *response =
+	    (struct pldm_new_file_with_metadata_resp *)msg->payload;
+
+	*completion_code = msg->payload[0];
+	if (*completion_code == PLDM_SUCCESS) {
+		*completion_code = response->completion_code;
+	}
+	return PLDM_SUCCESS;
+}
+
+int decode_new_file_with_metadata_req(
+    const struct pldm_msg *msg, size_t payload_length, uint16_t *file_type,
+    uint32_t *file_handle, uint64_t *length, uint32_t *file_meta_data_1,
+    uint32_t *file_meta_data_2, uint32_t *file_meta_data_3,
+    uint32_t *file_meta_data_4)
+{
+	if (msg == NULL || file_type == NULL || file_handle == NULL ||
+	    length == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length !=
+	    PLDM_NEW_FILE_AVAILABLE_WITH_META_DATA_REQ_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_new_file_with_metadata_req *request =
+	    (struct pldm_new_file_with_metadata_req *)msg->payload;
+	*file_type = le16toh(request->file_type);
+	*file_handle = le32toh(request->file_handle);
+	*length = le64toh(request->length);
+	*file_meta_data_1 = le32toh(request->file_meta_data_1);
+	*file_meta_data_2 = le32toh(request->file_meta_data_2);
+	*file_meta_data_3 = le32toh(request->file_meta_data_3);
+	*file_meta_data_4 = le32toh(request->file_meta_data_4);
+
+	return PLDM_SUCCESS;
+}
+
+int encode_new_file_with_metadata_resp(uint8_t instance_id,
+				       uint8_t completion_code,
+				       struct pldm_msg *msg)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_RESPONSE;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_NEW_FILE_AVAILABLE_WITH_META_DATA;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_new_file_with_metadata_resp *response =
+	    (struct pldm_new_file_with_metadata_resp *)msg->payload;
+
+	if (response->completion_code == PLDM_SUCCESS) {
+		response->completion_code = completion_code;
+	}
+
+	return PLDM_SUCCESS;
+}
diff --git a/pldm/libpldm/oem/ibm/host.c b/pldm/libpldm/oem/ibm/host.c
new file mode 100644
index 0000000..5cdcf74
--- /dev/null
+++ b/pldm/libpldm/oem/ibm/host.c
@@ -0,0 +1,108 @@
+#include "base.h"
+#include <endian.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "libpldm/host.h"
+
+int encode_get_alert_status_req(uint8_t instance_id, uint8_t version_id,
+				struct pldm_msg *msg, size_t payload_length)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	if (payload_length != PLDM_GET_ALERT_STATUS_REQ_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_REQUEST;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_HOST_GET_ALERT_STATUS;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	msg->payload[0] = version_id;
+
+	return PLDM_SUCCESS;
+}
+
+int decode_get_alert_status_resp(const struct pldm_msg *msg,
+				 size_t payload_length,
+				 uint8_t *completion_code, uint32_t *rack_entry,
+				 uint32_t *pri_cec_node)
+{
+	if (msg == NULL || completion_code == NULL || rack_entry == NULL ||
+	    pri_cec_node == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	*completion_code = msg->payload[0];
+	if (PLDM_SUCCESS != *completion_code) {
+		return PLDM_SUCCESS;
+	}
+
+	if (payload_length != PLDM_GET_ALERT_STATUS_RESP_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_get_alert_status_resp *response =
+	    (struct pldm_get_alert_status_resp *)msg->payload;
+
+	*rack_entry = le32toh(response->rack_entry);
+	*pri_cec_node = le32toh(response->pri_cec_node);
+
+	return PLDM_SUCCESS;
+}
+
+int decode_get_alert_status_req(const struct pldm_msg *msg,
+				size_t payload_length, uint8_t *version_id)
+{
+	if (msg == NULL || version_id == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length != PLDM_GET_ALERT_STATUS_REQ_BYTES) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	*version_id = msg->payload[0];
+
+	return PLDM_SUCCESS;
+}
+
+int encode_get_alert_status_resp(uint8_t instance_id, uint8_t completion_code,
+				 uint32_t rack_entry, uint32_t pri_cec_node,
+				 struct pldm_msg *msg, size_t payload_length)
+{
+	if (msg == NULL) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	if (payload_length != PLDM_GET_ALERT_STATUS_RESP_BYTES) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_RESPONSE;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_OEM;
+	header.command = PLDM_HOST_GET_ALERT_STATUS;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_get_alert_status_resp *response =
+	    (struct pldm_get_alert_status_resp *)msg->payload;
+
+	response->completion_code = completion_code;
+	response->rack_entry = htole32(rack_entry);
+	response->pri_cec_node = htole32(pri_cec_node);
+
+	return PLDM_SUCCESS;
+}
diff --git a/pldm/libpldm/oem/ibm/platform.c b/pldm/libpldm/oem/ibm/platform.c
new file mode 100644
index 0000000..15e9463
--- /dev/null
+++ b/pldm/libpldm/oem/ibm/platform.c
@@ -0,0 +1,50 @@
+#include "libpldm/platform.h"
+#include "libpldm/platform_oem_ibm.h"
+#include <string.h>
+
+int encode_bios_attribute_update_event_req(uint8_t instance_id,
+					   uint8_t format_version, uint8_t tid,
+					   uint8_t num_handles,
+					   const uint8_t *list_of_handles,
+					   size_t payload_length,
+					   struct pldm_msg *msg)
+{
+	if (format_version != 1) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (msg == NULL || list_of_handles == NULL) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (num_handles == 0) {
+		return PLDM_ERROR_INVALID_DATA;
+	}
+
+	if (payload_length !=
+	    (PLDM_PLATFORM_EVENT_MESSAGE_MIN_REQ_BYTES + sizeof(num_handles) +
+	     (num_handles * sizeof(uint16_t)))) {
+		return PLDM_ERROR_INVALID_LENGTH;
+	}
+
+	struct pldm_header_info header = {0};
+	header.msg_type = PLDM_REQUEST;
+	header.instance = instance_id;
+	header.pldm_type = PLDM_PLATFORM;
+	header.command = PLDM_PLATFORM_EVENT_MESSAGE;
+	uint8_t rc = pack_pldm_header(&header, &(msg->hdr));
+	if (rc != PLDM_SUCCESS) {
+		return rc;
+	}
+
+	struct pldm_bios_attribute_update_event_req *request =
+	    (struct pldm_bios_attribute_update_event_req *)msg->payload;
+	request->format_version = format_version;
+	request->tid = tid;
+	request->event_class = PLDM_EVENT_TYPE_OEM_EVENT_BIOS_ATTRIBUTE_UPDATE;
+	request->num_handles = num_handles;
+	memcpy(request->bios_attribute_handles, list_of_handles,
+	       num_handles * sizeof(uint16_t));
+
+	return PLDM_SUCCESS;
+}