apps/testing/nand_sim: Adds NAND virtual device.
Adds a NAND virtual device daemon. Signed-off-by: Saurav Pal <resyfer.dev@gmail.com>
This commit is contained in:
Saurav Pal
Xiang Xiao
parent
c15a6970c9
commit
f4092962df
3
.gitignore
vendored
3
.gitignore
vendored
@ -39,3 +39,6 @@ Make.dep
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.dirlinks
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.vscode
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.DS_Store
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build
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.ccls-cache
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compile_commands.json
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34
testing/nand_sim/Kconfig
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34
testing/nand_sim/Kconfig
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@ -0,0 +1,34 @@
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#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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config TESTING_NAND_SIM
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boolean "NAND Flash Simulator"
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default n
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---help---
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Enable the NAND Flash Simulator device.
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if TESTING_NAND_SIM
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config TESTING_NAND_SIM_SIZE
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int "Size of NAND Flash in MB"
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default 2
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---help---
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Size of NAND Flash in Megabytes.
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config TESTING_NAND_SIM_DEBUG
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int "Debugging mode"
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default 1
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range 0 2
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---help---
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0 - Disable debugging mode
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1 - Enable debugging mode to standard I/O
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2 - Enable debugging mode to a special file
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config TESTING_NAND_SIM_STACK
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int "Builtin task stack size"
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default DEFAULT_TASK_STACKSIZE
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---help---
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Size of the task to configure when started nand from NSH
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endif
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23
testing/nand_sim/Make.defs
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23
testing/nand_sim/Make.defs
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@ -0,0 +1,23 @@
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############################################################################
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# apps/testing/nand_sim/Make.defs
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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############################################################################
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ifneq ($(CONFIG_TESTING_NAND_SIM),)
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CONFIGURED_APPS += $(APPDIR)/testing/nand_sim
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endif
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30
testing/nand_sim/Makefile
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30
testing/nand_sim/Makefile
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@ -0,0 +1,30 @@
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############################################################################
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# apps/testing/nand_sim/Makefile
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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############################################################################
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include $(APPDIR)/Make.defs
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PROGNAME = nand
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PRIORITY = SCHED_PRIORITY_DEFAULT
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STACKSIZE = $(CONFIG_TESTING_NAND_SIM_STACK)
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MODULE = $(CONFIG_TESTING_NAND_SIM)
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MAINSRC = nand_sim_main.c
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include $(APPDIR)/Application.mk
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224
testing/nand_sim/nand_sim_main.c
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224
testing/nand_sim/nand_sim_main.c
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@ -0,0 +1,224 @@
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/****************************************************************************
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* apps/testing/nand_sim/nand_sim_main.c
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*
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <debug.h>
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#include <stdio.h>
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#include <nuttx/drivers/drivers.h>
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#include <nuttx/mtd/nand.h>
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#include <nuttx/mtd/nand_scheme.h>
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#include <nuttx/mtd/nand_ram.h>
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#include <nuttx/mtd/nand_wrapper.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define NAND_SIM_NAME "nand"
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#define NAND_SIM_PATH "/dev/" NAND_SIM_NAME
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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FAR struct mtd_dev_s *g_nand_sim_mtd_wrapper;
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FAR struct mtd_dev_s *g_nand_sim_mtd_under;
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FAR struct nand_raw_s *g_nand_mtd_raw;
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/****************************************************************************
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* External Functions
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: wrapper_init
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*
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* Description:
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* Initializes the wrapper by allocating memory and assiging the methods.
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*
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* Returned Value:
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* 0: Successful
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* -ENOMEM: No memory left to allocate device
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*
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****************************************************************************/
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int wrapper_init(void)
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{
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struct nand_dev_s *under;
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struct nand_dev_s *wrapper;
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g_nand_sim_mtd_wrapper = kmm_zalloc(sizeof(struct nand_wrapper_dev_s));
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if (g_nand_sim_mtd_wrapper == NULL)
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{
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return -ENOMEM;
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}
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under = &((struct nand_wrapper_dev_s *)g_nand_sim_mtd_wrapper)->under;
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wrapper = &((struct nand_wrapper_dev_s *)g_nand_sim_mtd_wrapper)->wrapper;
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memcpy(under, g_nand_sim_mtd_under, sizeof(struct nand_dev_s));
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memcpy(wrapper, g_nand_sim_mtd_under, sizeof(struct nand_dev_s));
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nand_wrapper_initialize();
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((struct mtd_dev_s *)wrapper)->name = NAND_SIM_NAME;
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((struct mtd_dev_s *)wrapper)->erase = nand_wrapper_erase;
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((struct mtd_dev_s *)wrapper)->bread = nand_wrapper_bread;
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((struct mtd_dev_s *)wrapper)->bwrite = nand_wrapper_bwrite;
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((struct mtd_dev_s *)wrapper)->ioctl = nand_wrapper_ioctl;
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((struct mtd_dev_s *)wrapper)->isbad = nand_wrapper_isbad;
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((struct mtd_dev_s *)wrapper)->markbad = nand_wrapper_markbad;
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return OK;
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}
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/****************************************************************************
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* Name: terminate
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*
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* Description:
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* Handles the SIGTERM signal by exitting gracefully.
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*
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****************************************************************************/
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void terminate(int sig)
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{
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kmm_free(g_nand_sim_mtd_under);
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kmm_free(g_nand_sim_mtd_wrapper);
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unregister_mtddriver(NAND_SIM_PATH);
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syslog(LOG_DEBUG, "Exited!\n");
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}
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/****************************************************************************
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* Name: nand_sim_main
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*
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* Description:
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* Entry point of the device emulator.
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*
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****************************************************************************/
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int main(int argc, FAR char *argv[])
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{
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int ret;
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pid_t pid;
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/* Daemon */
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pid = fork();
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if (pid > 0)
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{
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return OK;
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}
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if (daemon(0, 1) == -1)
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{
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ret = EXIT_FAILURE;
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goto errout;
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}
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/* Signal Handlers */
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signal(SIGTERM, terminate);
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/* Initializers */
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/* Raw NAND MTD Device */
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g_nand_mtd_raw = kmm_zalloc(sizeof(struct nand_raw_s));
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if (g_nand_mtd_raw == NULL)
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{
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ret = -ENOMEM;
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goto errout_with_logs;
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}
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g_nand_sim_mtd_under = nand_ram_initialize(g_nand_mtd_raw);
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if (g_nand_sim_mtd_under == NULL)
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{
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ret = -EINVAL;
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goto errout_with_raw_s;
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}
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ret = wrapper_init();
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if (ret < 0)
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{
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goto errout_with_mtd_under;
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}
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/* Under device driver is already copied to wrapper, so free. */
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kmm_free(g_nand_sim_mtd_under);
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ret = register_mtddriver(NAND_SIM_PATH,
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g_nand_sim_mtd_wrapper,
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0777, NULL);
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if (ret < 0)
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{
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goto errout_with_mtd_wrapper;
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}
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printf("Driver running!\n");
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/* To keep the daemon still running. All events are handled by signals */
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while (1)
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{
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sleep(1);
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}
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/* Won't reach this point */
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return OK;
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errout_with_mtd_wrapper:
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kmm_free(g_nand_sim_mtd_wrapper);
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errout_with_mtd_under:
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kmm_free(g_nand_sim_mtd_under);
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errout_with_raw_s:
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kmm_free(g_nand_mtd_raw);
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errout_with_logs:
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unregister_mtddriver(NAND_SIM_PATH);
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errout:
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return ret;
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}
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