test: Add system interface to define MTD and LPC characteristics

The primary entry point to the system abstraction is through its
ioctl() implementation, which handles ioctl calls for the MTD and LPC
subsystems. The MBOX portion needs no support as it is driven purely by
read() and write() calls.

Two helpers are exposed to configure the MTD and LPC subsystems
respectively.

Change-Id: Id50abdb967f6ea2ece2e3b21288412d276439c36
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>

2 files changed, 134 insertions, 0 deletions

diff --git a/test/system.c b/test/system.c
new file mode 100644
index 0000000..3b5a9bd
--- /dev/null
+++ b/test/system.c
@@ -0,0 +1,106 @@
+/*
+ * MBox Daemon Test File
+ *
+ * Copyright 2017 IBM
+ *
+ * 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.
+ *
+ */
+
+#include <linux/types.h>
+#include <mtd/mtd-user.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/mman.h>
+
+#include "linux/aspeed-lpc-ctrl.h"
+
+static struct aspeed_lpc_ctrl_mapping ctrl = {
+};
+
+static struct mtd_info_user mtd = {
+	.type = MTD_NORFLASH,
+	.flags = MTD_WRITEABLE,
+};
+
+void system_set_reserved_size(uint32_t size)
+{
+	ctrl.size = size;
+}
+
+void system_set_mtd_sizes(uint32_t size, uint32_t erasesize)
+{
+	mtd.size = size;
+	mtd.erasesize = erasesize;
+	mtd.writesize = erasesize;
+}
+
+int ioctl(int fd, unsigned long request, ...)
+{
+	int rc = 0;
+	va_list ap;
+
+	switch (request) {
+	case MEMGETINFO:
+	{
+		struct mtd_info_user *info;
+
+		va_start(ap, request);
+		info = va_arg(ap, struct mtd_info_user *);
+		memcpy(info, &mtd, sizeof(mtd));
+		va_end(ap);
+		break;
+	}
+	case MEMERASE:
+	{
+		struct erase_info_user *info;
+		uint8_t *map;
+
+		va_start(ap, request);
+		info = va_arg(ap, struct erase_info_user *);
+
+		if (info->start + info->length > mtd.size)
+			return -1;
+
+		map = mmap(NULL, mtd.size, PROT_WRITE, MAP_SHARED, fd, 0);
+		if (map == MAP_FAILED)
+			return -1;
+
+		memset(&map[info->start], 0xff, info->length);
+		munmap(map, mtd.size);
+
+		va_end(ap);
+		break;
+	}
+	case ASPEED_LPC_CTRL_IOCTL_GET_SIZE:
+	{
+		struct aspeed_lpc_ctrl_mapping *info;
+
+		va_start(ap, request);
+		info = va_arg(ap, struct aspeed_lpc_ctrl_mapping *);
+		info->size = mtd.size;
+		va_end(ap);
+		break;
+	}
+	case ASPEED_LPC_CTRL_IOCTL_MAP:
+		break;
+	default:
+		printf("ioctl() called with unhandled request 0x%08lx\n", request);
+		rc = -1;
+		break;
+	}
+
+	return rc;
+}
diff --git a/test/system.h b/test/system.h
new file mode 100644
index 0000000..a489e51
--- /dev/null
+++ b/test/system.h
@@ -0,0 +1,28 @@
+/*
+ * MBox Daemon Test File
+ *
+ * Copyright 2017 IBM
+ *
+ * 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 TEST_SYSTEM_H
+#define TEST_SYSTEM_H
+
+#include <stdint.h>
+
+void system_set_reserved_size(uint32_t size);
+void system_set_mtd_sizes(uint32_t size, uint32_t erasesize);
+
+#endif /* TEST_SYSTEM_H */