diff --git a/lpc.c b/lpc.c
new file mode 100644
index 0000000..ff36318
--- /dev/null
+++ b/lpc.c
@@ -0,0 +1,180 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright (C) 2018 IBM Corp.
+
+#define _GNU_SOURCE
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <limits.h>
+#include <poll.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/timerfd.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+#include <inttypes.h>
+
+#include "mbox.h"
+#include "common.h"
+#include "lpc.h"
+#include "flash.h"
+#include <linux/aspeed-lpc-ctrl.h>
+
+#define LPC_CTRL_PATH		"/dev/aspeed-lpc-ctrl"
+
+int __init_lpc_dev(struct mbox_context *context, const char *path)
+{
+	struct aspeed_lpc_ctrl_mapping map = {
+		.window_type = ASPEED_LPC_CTRL_WINDOW_MEMORY,
+		.window_id = 0, /* There's only one */
+		.flags = 0,
+		.addr = 0,
+		.offset = 0,
+		.size = 0
+	};
+	int fd;
+
+	/* Open LPC Device */
+	MSG_DBG("Opening %s\n", path);
+	fd = open(path, O_RDWR | O_SYNC);
+	if (fd < 0) {
+		MSG_ERR("Couldn't open %s with flags O_RDWR: %s\n",
+			path, strerror(errno));
+		return -errno;
+	}
+
+	context->fds[LPC_CTRL_FD].fd = fd;
+
+	/* Find Size of Reserved Memory Region */
+	MSG_DBG("Getting buffer size...\n");
+	if (ioctl(fd, ASPEED_LPC_CTRL_IOCTL_GET_SIZE, &map) < 0) {
+		MSG_ERR("Couldn't get lpc control buffer size: %s\n",
+			strerror(errno));
+		return -errno;
+	}
+
+	context->mem_size = map.size;
+	/* Map at the top of the 28-bit LPC firmware address space-0 */
+	context->lpc_base = 0x0FFFFFFF & -context->mem_size;
+
+	/* mmap the Reserved Memory Region */
+	MSG_DBG("Mapping in 0x%.8x bytes of %s\n", context->mem_size, path);
+	context->mem = mmap(NULL, context->mem_size, PROT_READ | PROT_WRITE,
+				MAP_SHARED, fd, 0);
+	if (context->mem == MAP_FAILED) {
+		MSG_ERR("Failed to map %s: %s\n", path, strerror(errno));
+		return -errno;
+	}
+
+	return 0;
+}
+
+int init_lpc_dev(struct mbox_context *context)
+{
+	return __init_lpc_dev(context, LPC_CTRL_PATH);
+}
+
+void free_lpc_dev(struct mbox_context *context)
+{
+	if (context->mem) {
+		munmap(context->mem, context->mem_size);
+	}
+	close(context->fds[LPC_CTRL_FD].fd);
+}
+
+/*
+ * point_to_flash() - Point the lpc bus mapping to the actual flash device
+ * @context:	The mbox context pointer
+ *
+ * Return:	0 on success otherwise negative error code
+ */
+int point_to_flash(struct mbox_context *context)
+{
+	struct aspeed_lpc_ctrl_mapping map = {
+		.window_type = ASPEED_LPC_CTRL_WINDOW_FLASH,
+		.window_id = 0, /* Theres only one */
+		.flags = 0,
+		/*
+		 * The mask is because the top nibble is the host LPC FW space,
+		 * we want space 0.
+		 */
+		.addr = 0x0FFFFFFF & -context->flash_size,
+		.offset = 0,
+		.size = context->flash_size
+	};
+
+	if (context->state & MAPS_FLASH) {
+		return 0; /* LPC Bus already points to flash */
+	}
+	/* Don't let the host access flash while we're suspended */
+	if (context->state & STATE_SUSPENDED) {
+		MSG_ERR("Can't point lpc mapping to flash while suspended\n");
+		return -MBOX_R_PARAM_ERROR;
+	}
+
+	MSG_INFO("Pointing HOST LPC bus at the flash\n");
+	MSG_INFO("Assuming %dMB of flash: HOST LPC 0x%08x\n",
+		context->flash_size >> 20, map.addr);
+
+	if (ioctl(context->fds[LPC_CTRL_FD].fd, ASPEED_LPC_CTRL_IOCTL_MAP, &map)
+			== -1) {
+		MSG_ERR("Failed to point the LPC BUS at the actual flash: %s\n",
+			strerror(errno));
+		return -MBOX_R_SYSTEM_ERROR;
+	}
+
+	context->state = ACTIVE_MAPS_FLASH;
+	/*
+	 * Since the host now has access to the flash it can change it out from
+	 * under us
+	 */
+	return flash_set_bytemap(context, 0, context->flash_size, FLASH_DIRTY);
+}
+
+/*
+ * point_to_memory() - Point the lpc bus mapping to the reserved memory region
+ * @context:	The mbox context pointer
+ *
+ * Return:	0 on success otherwise negative error code
+ */
+int point_to_memory(struct mbox_context *context)
+{
+	struct aspeed_lpc_ctrl_mapping map = {
+		.window_type = ASPEED_LPC_CTRL_WINDOW_MEMORY,
+		.window_id = 0, /* There's only one */
+		.flags = 0,
+		.addr = context->lpc_base,
+		.offset = 0,
+		.size = context->mem_size
+	};
+
+	if (context->state & MAPS_MEM) {
+		return 0; /* LPC Bus already points to reserved memory area */
+	}
+
+	MSG_INFO("Pointing HOST LPC bus at memory region %p of size 0x%.8x\n",
+			context->mem, context->mem_size);
+	MSG_INFO("LPC address 0x%.8x\n", map.addr);
+
+	if (ioctl(context->fds[LPC_CTRL_FD].fd, ASPEED_LPC_CTRL_IOCTL_MAP,
+		  &map)) {
+		MSG_ERR("Failed to point the LPC BUS to memory: %s\n",
+			strerror(errno));
+		return -MBOX_R_SYSTEM_ERROR;
+	}
+
+	/* LPC now maps memory (keep suspended state) */
+	context->state = MAPS_MEM | (context->state & STATE_SUSPENDED);
+
+	return 0;
+}