boot: add support for a minimal NuttX-based bootloader

This can be useful for development purposes when you don't need any complex bootloader yet,
but just want to jump to the app image.

Can be helpful when we need to switch from secure environment to non-secure environment.
This commit is contained in:
raiden00pl 2023-07-05 15:04:39 +02:00 committed by Xiang Xiao
parent be0e677699
commit 41868f5061
4 changed files with 141 additions and 0 deletions

23
boot/miniboot/Kconfig Normal file
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#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
menuconfig BOOT_MINIBOOT
bool "Minimal bootloader"
default n
select BOARDCTL_BOOT_IMAGE
---help---
Enable support for the minimal NuttX based bootloader.
config MINIBOOT_SLOT_PATH
string "Application firmware image slot path"
default "/dev/ota0"
---help---
The path to the application firmware image slot character
device driver.
Default: /dev/ota0
config MINIBOOT_HEADER_SIZE
hex "Application firmware image header size"
default 0x200

23
boot/miniboot/Make.defs Normal file
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############################################################################
# apps/boot/miniboot/Make.defs
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership. The
# ASF licenses this file to you 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.
#
############################################################################
ifneq ($(CONFIG_BOOT_MINIBOOT),)
CONFIGURED_APPS += $(APPDIR)/boot/miniboot
endif

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boot/miniboot/Makefile Normal file
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############################################################################
# apps/boot/miniboot/Makefile
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership. The
# ASF licenses this file to you 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 $(APPDIR)/Make.defs
PROGNAME = miniboot
PRIORITY = SCHED_PRIORITY_DEFAULT
STACKSIZE = $(CONFIG_DEFAULT_TASK_STACKSIZE)
MAINSRC = miniboot_main.c
include $(APPDIR)/Application.mk

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/****************************************************************************
* apps/boot/miniboot/miniboot_main.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <syslog.h>
#include <sys/boardctl.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: miniboot_main
*
* Description:
* Minimal bootlaoder entry point.
*
****************************************************************************/
int main(int argc, FAR char *argv[])
{
struct boardioc_boot_info_s info;
syslog(LOG_INFO, "*** miniboot ***\n");
/* Perform architecture-specific initialization (if configured) */
boardctl(BOARDIOC_INIT, 0);
#ifdef CONFIG_BOARDCTL_FINALINIT
/* Perform architecture-specific final-initialization (if configured) */
boardctl(BOARDIOC_FINALINIT, 0);
#endif
/* Call board specific image boot */
info.path = CONFIG_MINIBOOT_SLOT_PATH;
info.header_size = CONFIG_MINIBOOT_HEADER_SIZE;
return boardctl(BOARDIOC_BOOT_IMAGE, (uintptr_t)&info);
}