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boards/arm: Add support for the original BeagleBone

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Add initial NuttX port for the original (white) BeagleBone board, which is
powered by the TI AM335x Sitara Cortex-A8 processor.

This commit includes:
- Board documentation
- Board support package files derived from BeagleBone black
- Architecture-specific page allocator for memory management in kernel build.
- Default configurations for both flat (`nsh`) and kernel (`knsh`) builds
  running via U-Boot from a microSD card.

Signed-off-by: Lwazi Dube <lwazeh@gmail.com>
This commit is contained in:
Lwazi Dube 2026-08-17 22:18:34 -04:00 • committed by Xiang Xiao
parent 2b1cf42387
commit ba6ce5ea32
22 changed files with 1575 additions and 21 deletions
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Documentation/platforms/arm/am335x/boards/beaglebone/beaglebone.jpg Normal file
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184
Documentation/platforms/arm/am335x/boards/beaglebone/index.rst Normal file
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@ -0,0 +1,184 @@
==========
BeagleBone
==========
.. tags:: arch:arm, chip:am335x
.. figure:: beaglebone.jpg
:figwidth: 100%
:align: center
:alt: The BeagleBone
The BeagleBone
This directory contains the port of NuttX to the original (white) BeagleBone.
See https://www.beagleboard.org/boards/beaglebone-original for more information.
This board is based around the TI AM335x Sitara Cortex-A8 CPU.
=================== =============================================================
ITEMS DETAILS
=================== =============================================================
CPU 720MHz ARM Cortex-A8
FPU NEON SIMD Coprocessor
I-Cache 32KB
D-Cache 32KB
L2 Cache 256KB L2 Cache with ECC
DRAM 256MB DDR2
On-Chip SRAM 64KB
Dedicated SRAM 64KB
On-Chip Boot ROM 176KB
Onboard Storage microSD card (TF) slot
Extension Interface 2.54mm Headers, 92 pins
Network interface 10/100Mbps RJ45
Power 5V, 1000mA
=================== =============================================================
Peripheral Support
==================
The following list indicates the state of peripherals' support in NuttX:
=========== ======= ====================
Peripheral Support NOTES
=========== ======= ====================
ADC No
Ethernet No
CAN No
DMA No
GPIO Yes
I2C Yes
I2S No
LED Yes
SD No
SPI No
Timers Yes
UART Yes
USB Client No
USB Host No
Watchdog Yes
=========== ======= ====================
Serial Console
==============
By default, the serial console will be provided on UART0 in all of these
configurations.
UART0 is available on the USB client port.
Booting NuttX from a microSD card
=================================
It is assumed that the microSD already boots to the U-Boot prompt.
These are the steps to run nuttx.bin from the microSD Card:
#. Configure and build the NuttX BeagleBone configuration. You
should have a file called nuttx.bin when the build completes.
#. Insert a microSD into the host PC.
#. Copy nuttx.bin into the microSD.
#. Remove the microSD from the host PC and insert into the BeagleBone
microSD slot.
#. Connect a Mini-USB cable to the BeagleBone and open a serial
terminal on the host PC to communicate with the target.
#. Reset and stop the BeagleBone boot. You should see output from
U-boot in the serial console.
#. Load NuttX into memory from the U-Boot prompt and run NuttX as shown
below.
.. code-block:: console
=> load mmc 0 0x80300000 nuttx.bin
414356 bytes read in 37 ms (10.7 MiB/s)
=> go 0x80300000
## Starting application at 0x80300000 ...
NuttShell (NSH) NuttX-13.0.1-RC0
nsh>
Configurations
==============
Information Common to All Configurations
----------------------------------------
Each BeagleBone configuration is maintained in a sub-directory and
can be selected as follow:
*tools/configure.sh [OPTIONS] beaglebone:<subdir>*
Where [OPTIONS] include -l to configure for a Linux host platform.
-h will give you the list of all options.
Before building, make sure the PATH environment variable includes the
correct path to the directory that holds your toolchain binaries.
Build NuttX by typing the following:
*make*
At the conclusion of the make, the nuttx binary will reside in an ELF file
called nuttx.
The ``<subdir>`` that is provided above as an argument to the tools/configure.sh
must be one of the following.
Configuration Sub-directories
-----------------------------
nsh
---
This configuration directory provides the NuttShell (NSH).
knsh
----
This is the kernel build configuration. User applications are included in the
final nuttx.bin image.
Steps to build the kernel image with userspace apps in ROMFS:
.. code-block:: console
./tools/configure.sh -l beaglebone/knsh
make && make export
pushd ../apps
tools/mkimport.sh -z -x ../nuttx/nuttx-export-*.tar.gz
make import
cp -a bin /tmp
tools/mkromfsimg.sh
mv boot_romfsimg.h ../nuttx/boards/arm/am335x/beaglebone/include/bin_romfsimg.h
popd
make clean clean_context
make
Run the nuttx.bin as previously described.
.. code-block:: console
=> load mmc 0 0x80300000 knsh.bin
414356 bytes read in 41 ms (9.6 MiB/s)
=> go 0x80300000
## Starting application at 0x80300000 ...
NuttShell (NSH) NuttX-13.0.1-RC0
knsh> uname -a
NuttX 13.0.1-RC0 3b7e453012-dirty Aug 17 2026 20:07:55 arm beaglebone
knsh> ls /bin
/bin:
dd
getprime
hello
init
sh
knsh> /bin/hello
Hello, World!!
knsh>

21
Documentation/platforms/arm/am335x/index.rst
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@ -2,27 +2,6 @@
TI/Sitara AM335x
================
These following boards are based on the TI/Sitara
AM335x are supported by NuttX:
- **Beaglebone Black**. A port of NuttX to the Beaglebone Black board
was first released in NuttX-7.28. This port was contributed by Petro
Karashchenko. This board is based on the TI/Sitara AM3358 Cortex-A8
CPU running 1GHz.
- **NuttX-7.28**. This initial port in NuttX-7.28 is very sparse.
While not ready for production use, the Beaglebone Black port is
functional and will be the basis for a more extensive development.
Additional work in progress to extend this port and more capable
is anticipated in NuttX-7.29.
- **NuttX-9.0** CAN support was added. Clock Configuration was
added.
- **NuttX-7.31**. An LCD driver was added in NuttX-7.31.
Refer to the Beaglebone Black board
`README <https://github.com/apache/nuttx/blob/master/Documentation/platforms/arm/am335x/boards/beaglebone-black/README.txt>`__
file for further, up-to-date information.
Supported Boards
================

4
arch/arm/src/am335x/CMakeLists.txt
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@ -47,4 +47,8 @@ if(CONFIG_AM335X_LCDC)
list(APPEND SRCS am335x_lcdc.c am335x_edid.c)
endif()
if(CONFIG_MM_PGALLOC)
list(APPEND SRCS am335x_pgalloc.c)
endif()
target_sources(arch PRIVATE ${SRCS})

4
arch/arm/src/am335x/Make.defs
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@ -39,3 +39,7 @@ endif
ifeq ($(CONFIG_AM335X_LCDC),y)
CHIP_CSRCS += am335x_lcdc.c am335x_edid.c
endif
ifeq ($(CONFIG_MM_PGALLOC),y)
CHIP_CSRCS += am335x_pgalloc.c
endif

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/****************************************************************************
* arch/arm/src/am335x/am335x_pgalloc.c
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 <nuttx/irq.h>
#include "arm_internal.h"
#ifdef CONFIG_MM_PGALLOC
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_allocate_pgheap
*
* Description:
* If there is a page allocator in the configuration, then this function
* must be provided by the platform-specific code. The OS initialization
* logic will call this function early in the initialization sequence to
* get the page heap information needed to configure the page allocator.
*
****************************************************************************/
void up_allocate_pgheap(void **pool_start, size_t *pool_size)
{
DEBUGASSERT(pool_start && pool_size);
*pool_start = (void *)CONFIG_ARCH_PGPOOL_PBASE;
*pool_size = (size_t)CONFIG_ARCH_PGPOOL_SIZE;
}
#endif /* CONFIG_MM_PGALLOC */

13
boards/Kconfig
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@ -1702,6 +1702,15 @@ config ARCH_BOARD_PCDUINO_A10
the differences are cosmetic. This port was developed on the v1 board,
but the others may be compatible.
config ARCH_BOARD_BEAGLEBONE
bool "beaglebone"
depends on ARCH_CHIP_AM335X
select ARCH_HAVE_LEDS
select ARCH_HAVE_BUTTONS
select ARCH_HAVE_IRQBUTTONS
---help---
This is the port of NuttX to the original TI Beaglebone board.
config ARCH_BOARD_BEAGLEBONE_BLACK
bool "beaglebone black"
depends on ARCH_CHIP_AM335X
@ -4009,6 +4018,7 @@ config ARCH_BOARD
default "or1k" if ARCH_BOARD_OR1K
default "p112" if ARCH_BOARD_P112
default "pcduino-a10" if ARCH_BOARD_PCDUINO_A10
default "beaglebone" if ARCH_BOARD_BEAGLEBONE
default "beaglebone-black" if ARCH_BOARD_BEAGLEBONE_BLACK
default "pic32mx-starterkit" if ARCH_BOARD_PIC32MX_STARTERKIT
default "pic32mx7mmb" if ARCH_BOARD_PIC32MX7MMB
@ -4236,6 +4246,9 @@ comment "Board-Specific Options"
if ARCH_BOARD_PCDUINO_A10
source "boards/arm/a1x/pcduino-a10/Kconfig"
endif
if ARCH_BOARD_BEAGLEBONE
source "boards/arm/am335x/beaglebone/Kconfig"
endif
if ARCH_BOARD_BEAGLEBONE_BLACK
source "boards/arm/am335x/beaglebone-black/Kconfig"
endif

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boards/arm/am335x/beaglebone/CMakeLists.txt Normal file
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# ##############################################################################
# boards/arm/am335x/beaglebone/CMakeLists.txt
#
# SPDX-License-Identifier: Apache-2.0
#
# 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.
#
# ##############################################################################
add_subdirectory(src)

7
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@ -0,0 +1,7 @@
#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
if ARCH_BOARD_BEAGLEBONE
endif # ARCH_BOARD_BEAGLEBONE

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boards/arm/am335x/beaglebone/configs/knsh/defconfig Normal file
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#
# This file is autogenerated: PLEASE DO NOT EDIT IT.
#
# You can use "make menuconfig" to make any modifications to the installed .config file.
# You can then do "make savedefconfig" to generate a new defconfig file that includes your
# modifications.
#
# CONFIG_NSH_CMDOPT_HEXDUMP is not set
CONFIG_AM335X_UART0=y
CONFIG_ARCH="arm"
CONFIG_ARCH_ADDRENV=y
CONFIG_ARCH_BOARD="beaglebone"
CONFIG_ARCH_BOARD_BEAGLEBONE=y
CONFIG_ARCH_CHIP="am335x"
CONFIG_ARCH_CHIP_AM3358=y
CONFIG_ARCH_CHIP_AM335X=y
CONFIG_ARCH_DATA_NPAGES=256
CONFIG_ARCH_DATA_VBASE=0x80100000
CONFIG_ARCH_HEAP_NPAGES=256
CONFIG_ARCH_HEAP_VBASE=0x80200000
CONFIG_ARCH_INTERRUPTSTACK=2048
CONFIG_ARCH_LOWVECTORS=y
CONFIG_ARCH_PGPOOL_MAPPING=y
CONFIG_ARCH_PGPOOL_PBASE=0x88000000
CONFIG_ARCH_PGPOOL_SIZE=134217728
CONFIG_ARCH_PGPOOL_VBASE=0x88000000
CONFIG_ARCH_STACKDUMP=y
CONFIG_ARCH_TEXT_NPAGES=256
CONFIG_ARCH_TEXT_VBASE=0x0000000
CONFIG_ARM_THUMB=y
CONFIG_BOARD_LOOPSPERMSEC=70000
CONFIG_BOOT_RUNFROMSDRAM=y
CONFIG_BUILD_KERNEL=y
CONFIG_DEBUG_ASSERTIONS=y
CONFIG_DEBUG_FEATURES=y
CONFIG_DEBUG_FULLOPT=y
CONFIG_DEBUG_SYMBOLS=y
CONFIG_ELF=y
CONFIG_ELF_STACKSIZE=4096
CONFIG_EXAMPLES_HELLO=y
CONFIG_FAT_LCNAMES=y
CONFIG_FAT_LFN=y
CONFIG_FS_FAT=y
CONFIG_FS_PROCFS=y
CONFIG_FS_ROMFS=y
CONFIG_HAVE_CXX=y
CONFIG_HAVE_CXXINITIALIZE=y
CONFIG_IDLETHREAD_STACKSIZE=8192
CONFIG_INIT_MOUNT=y
CONFIG_INIT_STACKSIZE=3072
CONFIG_INTELHEX_BINARY=y
CONFIG_LIBC_ENVPATH=y
CONFIG_LIBC_EXECFUNCS=y
CONFIG_LIBC_MAX_EXITFUNS=16
CONFIG_LIBC_STRERROR=y
CONFIG_LIBC_USRWORK=y
CONFIG_LIBC_USRWORKSTACKSIZE=4096
CONFIG_MM_PGALLOC=y
CONFIG_NSH_DISABLE_DMESG=y
CONFIG_NSH_DISABLE_EXIT=y
CONFIG_NSH_FILEIOSIZE=512
CONFIG_NSH_FILE_APPS=y
CONFIG_NSH_PROMPT_STRING="knsh> "
CONFIG_NSH_READLINE=y
CONFIG_NSH_STRERROR=y
CONFIG_NSH_VARS=y
CONFIG_PREALLOC_TIMERS=4
CONFIG_RAM_SIZE=131072000
CONFIG_RAM_START=0x80300000
CONFIG_RAM_VSTART=0x80300000
CONFIG_RAW_BINARY=y
CONFIG_READLINE_CMD_HISTORY=y
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_HAVE_PARENT=y
CONFIG_SCHED_HPWORK=y
CONFIG_SCHED_HPWORKPRIORITY=192
CONFIG_SCHED_LPWORK=y
CONFIG_SCHED_WAITPID=y
CONFIG_SERIAL_TERMIOS=y
CONFIG_STACK_COLORATION=y
CONFIG_START_MONTH=8
CONFIG_START_YEAR=2026
CONFIG_SYMTAB_ORDEREDBYNAME=y
CONFIG_SYSLOG_TIMESTAMP=y
CONFIG_SYSTEM_NSH=y
CONFIG_SYSTEM_NSH_PROGNAME="init"
CONFIG_TESTING_GETPRIME=y
CONFIG_UART0_SERIAL_CONSOLE=y

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@ -0,0 +1,47 @@
#
# This file is autogenerated: PLEASE DO NOT EDIT IT.
#
# You can use "make menuconfig" to make any modifications to the installed .config file.
# You can then do "make savedefconfig" to generate a new defconfig file that includes your
# modifications.
#
# CONFIG_NSH_CMDOPT_HEXDUMP is not set
# CONFIG_NSH_DISABLE_IFCONFIG is not set
# CONFIG_NSH_DISABLE_PS is not set
CONFIG_AM335X_UART0=y
CONFIG_ARCH="arm"
CONFIG_ARCH_BOARD="beaglebone"
CONFIG_ARCH_BOARD_BEAGLEBONE=y
CONFIG_ARCH_CHIP="am335x"
CONFIG_ARCH_CHIP_AM3358=y
CONFIG_ARCH_CHIP_AM335X=y
CONFIG_ARCH_INTERRUPTSTACK=2048
CONFIG_ARCH_LOWVECTORS=y
CONFIG_ARCH_STACKDUMP=y
CONFIG_BOARD_LOOPSPERMSEC=70000
CONFIG_BOOT_RUNFROMSDRAM=y
CONFIG_BUILTIN=y
CONFIG_DISABLE_ENVIRON=y
CONFIG_FAT_LCNAMES=y
CONFIG_FAT_LFN=y
CONFIG_FS_FAT=y
CONFIG_HAVE_CXX=y
CONFIG_HAVE_CXXINITIALIZE=y
CONFIG_HOST_WINDOWS=y
CONFIG_INIT_ENTRYPOINT="nsh_main"
CONFIG_INTELHEX_BINARY=y
CONFIG_NSH_BUILTIN_APPS=y
CONFIG_NSH_FILEIOSIZE=512
CONFIG_NSH_READLINE=y
CONFIG_PREALLOC_TIMERS=4
CONFIG_RAM_SIZE=131072000
CONFIG_RAM_START=0x80300000
CONFIG_RAM_VSTART=0x80300000
CONFIG_RAW_BINARY=y
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_WAITPID=y
CONFIG_START_MONTH=8
CONFIG_START_YEAR=2026
CONFIG_SYMTAB_ORDEREDBYNAME=y
CONFIG_SYSTEM_NSH=y
CONFIG_UART0_SERIAL_CONSOLE=y

37
boards/arm/am335x/beaglebone/include/bin_romfsimg.h Normal file
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@ -0,0 +1,37 @@
/****************************************************************************
* boards/arm/am335x/beaglebone/include/bin_romfsimg.h
*
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*
****************************************************************************/
#ifndef __BOARDS_ARM_SAMA5_SAMA5D3_XPLAINED_BOOT_ROMFSIMG_H
#define __BOARDS_ARM_SAMA5_SAMA5D3_XPLAINED_BOOT_ROMFSIMG_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/compiler.h>
const unsigned char aligned_data(4) romfs_img[] =
{
0x00
};
unsigned int romfs_img_len = 1;
#endif /* __BOARDS_ARM_SAMA5_SAMA5D3_XPLAINED_BOOT_ROMFSIMG_H */

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boards/arm/am335x/beaglebone/include/board.h Normal file
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@ -0,0 +1,143 @@
/****************************************************************************
* boards/arm/am335x/beaglebone/include/board.h
*
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*
****************************************************************************/
#ifndef __BOARDS_ARM_AM335X_BEAGLEBONE_INCLUDE_BOARD_H
#define __BOARDS_ARM_AM335X_BEAGLEBONE_INCLUDE_BOARD_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Clocking *****************************************************************/
/* Since NuttX is booted from a loader on the AM335X, clocking should already
* be setup when NuttX starts.
*/
/* LED definitions **********************************************************/
/* The beaglebone black has four user LEDs; all four can be controlled from
* software.
* All are tied to ground and, hence, illuminated by driving the output pins
* to a high value:
*
* 1. LED0 GPMC_A5 GPMC_A5/GMII2_TXD0/RGMII2_TD0/RMII2_TXD0/GPMC_A21/
* PR1_MII1_RXD3/eQEP1B_IN/GPIO1_21
* 2. LED1 GPMC_A6 GPMC_A6/GMII2_TXCLK/RGMII2_TCLK/MMC2_DAT4/GPMC_A22/
* PR1_MII1_RXD2/eQEP1_INDEX/GPIO1_22
* 3. LED2 GPMC_A7 GPMC_A7/GMII2_RXCLK/RGMII2_RCLK/MMC2_DAT5/GPMC_A23/
* PR1_MII1_RXD1/eQEP1_STROBE/GPIO1_23
* 4. LED3 GPMC_A8 GPMC_A8/GMII2_RXD3/RGMII2_RD3/MMC2_DAT6/GPMC_A24/
* PR1_MII1_RXD0/MCASP0_ACLKX/GPIO1_24
*/
/* LED index values for use with board_userled() */
#define USER_LED0 0
#define USER_LED1 1
#define USER_LED2 2
#define USER_LED3 3
#define BOARD_NLEDS 4
/* LED bits for use with board_userled_all() */
#define BOARD_LED0_BIT (1 << USER_LED0)
#define BOARD_LED1_BIT (1 << USER_LED1)
#define BOARD_LED2_BIT (1 << USER_LED2)
#define BOARD_LED3_BIT (1 << USER_LED3)
/* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
* defined. In that case, the usage by the board port is defined in
* include/board.h and src/am335x_leds.c.
* The LEDs are used to encode OS-related events as follows:
*
* SYMBOL Value Meaning LED state
* LED0 LED1 LED2
* ----------------- ----- ----------------------- ---- ---- ---------
*/
#define LED_STARTED 0 /* NuttX has been started ON OFF OFF */
#define LED_HEAPALLOCATE 1 /* Heap has been allocated OFF ON OFF */
#define LED_IRQSENABLED 2 /* Interrupts enabled ON ON OFF */
#define LED_STACKCREATED 2 /* Idle stack created ON ON OFF */
#define LED_INIRQ 3 /* In an interrupt N/C N/C Soft glow */
#define LED_SIGNAL 3 /* In a signal handler N/C N/C Soft glow */
#define LED_ASSERTION 3 /* An assertion failed N/C N/C Soft glow */
#define LED_PANIC 3 /* The system has crashed N/C N/C 2Hz Flashing */
/* LED_IDLE --- MCU is in sleep mode Not used
*
* After booting, LED0 and 1 are not longer used by the system and can be
* used for other purposes by the application (Of course, all LEDs are
* available to the application if CONFIG_ARCH_LEDS is not defined.
*/
/* NAND *********************************************************************/
/* GPIO pin disambiguation **************************************************/
/* UARTs ********************************************************************/
/* One UART connections is available:
*
* 1. UART0 is available on FT2232H USB to Serial Adapter.
*
* FT2232H BDBUS1 Pin UART0-RXD UART0_RXD/SPI1_CS0/DCAN0_TX/I2C2_SDA/
* eCAP2_IN_PWM2_OUT/PR1_PRU1_PRU_R30_14/
* PR1_PRU1_PRU_R31_14/GPIO1_10
* FT2232H BDBUS0 Pin UART0-TXD UART0_TXD/SPI1_CS1/DCAN0_RX/I2C2_SCL/
* eCAP1_IN_PWM1_OUT/PR1_PRU1_PRU_R30_15/
* PR1_PRU1_PRU_R31_15/GPIO1_11
*/
/* I2Cs *********************************************************************/
#define GPIO_I2C1_SCL GPIO_I2C1_SCL_2
#define GPIO_I2C1_SCL GPIO_I2C1_SDA_2
#define GPIO_I2C2_SCL GPIO_I2C2_SCL_1
#define GPIO_I2C2_SCL GPIO_I2C2_SDA_1
/* CANs *********************************************************************/
#define GPIO_DCAN0_RX GPIO_DCAN0_RX_3
#define GPIO_DCAN0_TX GPIO_DCAN0_TX_3
#define GPIO_DCAN1_RX GPIO_DCAN1_RX_3
#define GPIO_DCAN1_TX GPIO_DCAN1_TX_3
/****************************************************************************
* Assembly Language Macros
****************************************************************************/
#ifdef __ASSEMBLY__
.macro config_sdram
.endm
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_ARM_AM335X_BEAGLEBONE_INCLUDE_BOARD_H */

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/****************************************************************************
* boards/arm/am335x/beaglebone/include/board_memorymap.h
*
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*
****************************************************************************/
#ifndef __BOARDS_ARM_AM335X_BEAGLEBONE_INCLUDE_BOARD_MEMORYMAP_H
#define __BOARDS_ARM_AM335X_BEAGLEBONE_INCLUDE_BOARD_MEMORYMAP_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_ARM_AM335X_BEAGLEBONE_INCLUDE_BOARD_MEMORYMAP_H */

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############################################################################
# boards/arm/am335x/beaglebone/scripts/Make.defs
#
# SPDX-License-Identifier: Apache-2.0
#
# 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 $(TOPDIR)/.config
include $(TOPDIR)/tools/Config.mk
include $(TOPDIR)/arch/arm/src/armv7-a/Toolchain.defs
# Setup for the kind of memory that we are executing from
LDSCRIPT = sdram.ld
ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
AFLAGS := $(CFLAGS) -D__ASSEMBLY__
NXFLATLDFLAGS1 = -r -d -warn-common
NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -no-check-sections
LDNXFLATFLAGS = -e main -s 2048

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/****************************************************************************
* boards/arm/am335x/beaglebone/scripts/sdram.ld
*
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*
****************************************************************************/
/* The Beaglebone Black and 512MB of SDRAM beginning at virtual address
* 0x8000:0000. Execution begins at address 0x8a00000, leaving 352MB for NuttX.
*
* Vectors in low memory are assumed and 16KB of OCMC0 is reserved at the
* high end of OCMC0 for the page table.
*/
MEMORY
{
isram (W!RX) : ORIGIN = 0x402F0400, LENGTH = 63K
ocmc0 (W!RX) : ORIGIN = 0x40300000, LENGTH = 64K -16K
ddr (W!RX) : ORIGIN = 0x80300000, LENGTH = 128M - 3M
}
ENTRY(entry)
ENTRY(_stext)
SECTIONS
{
.text :
{
_stext = ABSOLUTE(.);
*(.vectors)
*(.text .text.*)
*(.fixup)
*(.gnu.warning)
*(.rodata .rodata.*)
*(.gnu.linkonce.t.*)
*(.glue_7)
*(.glue_7t)
*(.got)
*(.gcc_except_table)
*(.gnu.linkonce.r.*)
*(.ARM.extab*)
*(.gnu.linkonce.armextab.*)
_etext = ABSOLUTE(.);
} > ddr
.init_section :
{
_sinit = ABSOLUTE(.);
KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
KEEP(*(.init_array EXCLUDE_FILE(*crtbegin.o *crtbegin?.o *crtend.o *crtend?.o) .ctors))
_einit = ABSOLUTE(.);
} > ddr
.ARM.extab :
{
*(.ARM.extab*)
} > ddr
/* .ARM.exidx is sorted, so has to go in its own output section. */
PROVIDE_HIDDEN (__exidx_start = .);
.ARM.exidx :
{
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
} > ddr
PROVIDE_HIDDEN (__exidx_end = .);
.data :
{
_sdata = ABSOLUTE(.);
*(.data .data.*)
*(.gnu.linkonce.d.*)
CONSTRUCTORS
. = ALIGN(4);
_edata = ABSOLUTE(.);
} > ddr
/* Uninitialized data */
.noinit :
{
_snoinit = ABSOLUTE(.);
*(.noinit*)
_enoinit = ABSOLUTE(.);
} > ddr
.bss :
{
_sbss = ABSOLUTE(.);
*(.bss .bss.*)
*(.gnu.linkonce.b.*)
*(COMMON)
. = ALIGN(4);
_ebss = ABSOLUTE(.);
} > ddr
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_info 0 : { *(.debug_info) }
.debug_line 0 : { *(.debug_line) }
.debug_pubnames 0 : { *(.debug_pubnames) }
.debug_aranges 0 : { *(.debug_aranges) }
}

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# ##############################################################################
# boards/arm/am335x/beaglebone/src/CMakeLists.txt
#
# SPDX-License-Identifier: Apache-2.0
#
# 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.
#
# ##############################################################################
set(SRCS am335x_boot.c am335x_bringup.c am335x_leds.c)
target_sources(board PRIVATE ${SRCS})
set_property(GLOBAL PROPERTY LD_SCRIPT "${NUTTX_BOARD_DIR}/scripts/sdram.ld")

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############################################################################
# boards/arm/am335x/beaglebone/src/Makefile
#
# SPDX-License-Identifier: Apache-2.0
#
# 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 $(TOPDIR)/Make.defs
CSRCS = am335x_boot.c am335x_bringup.c am335x_leds.c
include $(TOPDIR)/boards/Board.mk

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/****************************************************************************
* boards/arm/am335x/beaglebone/src/am335x_boot.c
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 <nuttx/debug.h>
#include <nuttx/board.h>
#include "beaglebone.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: am335x_memory_initialize
*
* Description:
* All AM335X architectures must provide the following entry point. This
* entry point is called early in the initialization before memory has
* been configured. This board-specific function is responsible for
* configuring any on-board memories.
*
* Logic in am335x_memory_initialize must be careful to avoid using any
* global variables because those will be uninitialized at the time this
* function is called.
*
* Input Parameters:
* None
*
* Returned Value:
* None
*
****************************************************************************/
void am335x_memory_initialize(void)
{
/* SDRAM was initialized by a bootloader in the supported configurations. */
}
/****************************************************************************
* Name: am335x_board_initialize
*
* Description:
* All AM335x architectures must provide the following entry point.
* This entry point is called early in the initialization -- after all
* memory has been configured and mapped but before any devices have been
* initialized.
*
****************************************************************************/
void am335x_board_initialize(void)
{
/* Configure on-board LEDs. */
am335x_led_initialize();
}
/****************************************************************************
* Name: board_late_initialize
*
* Description:
* If CONFIG_BOARD_LATE_INITIALIZE is selected, then an additional
* initialization call will be performed in the boot-up sequence to a
* function called board_late_initialize(). board_late_initialize() will be
* called immediately after up_initialize() is called and just before the
* initial application is started. This additional initialization phase
* may be used, for example, to initialize board-specific device drivers.
*
****************************************************************************/
#ifdef CONFIG_BOARD_LATE_INITIALIZE
void board_late_initialize(void)
{
/* Perform board-specific initialization */
am335x_bringup();
}
#endif /* CONFIG_BOARD_LATE_INITIALIZE */

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/****************************************************************************
* boards/arm/am335x/beaglebone/src/am335x_bringup.c
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 <nuttx/debug.h>
#include <nuttx/fs/fs.h>
#ifdef CONFIG_USERLED
# include <nuttx/leds/userled.h>
#endif
#include "beaglebone.h"
#include "am335x_i2c.h"
#include "am335x_can.h"
#ifdef CONFIG_FS_ROMFS
#include <nuttx/drivers/ramdisk.h>
#include <arch/board/bin_romfsimg.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define SECTORSIZE 512
#define NSECTORS(b) (((b) + SECTORSIZE - 1) / SECTORSIZE)
#endif /* CONFIG_FS_ROMFS */
/****************************************************************************
* Private Functions
****************************************************************************/
#if defined(CONFIG_I2C_DRIVER) && (defined(CONFIG_AM335X_I2C0) || \
defined(CONFIG_AM335X_I2C1) || defined(CONFIG_AM335X_I2C2))
static void am335x_i2c_register(int bus)
{
struct i2c_master_s *i2c;
int ret;
i2c = am335x_i2cbus_initialize(bus);
if (i2c == NULL)
{
syslog(LOG_ERR, "Failed to get I2C%d interface\n", bus);
}
else
{
ret = i2c_register(i2c, bus);
if (ret < 0)
{
syslog(LOG_ERR, "Failed to register I2C%d driver: %d\n", bus, ret);
am335x_i2cbus_uninitialize(i2c);
}
}
}
#endif
#if defined(CONFIG_CAN) && (defined(CONFIG_AM335X_CAN0) || defined(CONFIG_AM335X_CAN1))
static void am335x_can_register(void)
{
struct can_dev_s *can;
int ret;
#ifdef CONFIG_AM335X_CAN0
can = am335x_can_initialize(0);
if (can == NULL)
{
syslog(LOG_ERR, "Failed to get DCAN0 interface\n");
}
else
{
ret = can_register("/dev/can0", can);
if (ret < 0)
{
syslog(LOG_ERR, "can_register failed: %d\n", ret);
am335x_can_uninitialize(can);
}
}
#endif
#ifdef CONFIG_AM335X_CAN1
can = am335x_can_initialize(1);
if (can == NULL)
{
syslog(LOG_ERR, "Failed to get DCAN1 interface\n");
}
else
{
#ifdef CONFIG_AM335X_CAN0
ret = can_register("/dev/can1", can);
#else
ret = can_register("/dev/can0", can);
#endif
if (ret < 0)
{
syslog(LOG_ERR, "can_register failed: %d\n", ret);
am335x_can_uninitialize(can);
}
}
#endif
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: am335x_bringup
*
* Description:
* Perform architecture-specific initialization
*
* CONFIG_BOARD_LATE_INITIALIZE=y :
* Called from board_late_initialize().
*
****************************************************************************/
int am335x_bringup(void)
{
int ret = OK;
#ifdef CONFIG_USERLED
/* Register the LED driver */
ret = userled_lower_initialize("/dev/userleds");
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: userled_lower_initialize() failed: %d\n", ret);
}
#endif
#ifdef CONFIG_FS_PROCFS
/* Mount the procfs file system */
ret = nx_mount(NULL, "/proc", "procfs", 0, NULL);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to mount procfs at /proc: %d\n", ret);
}
#endif
#ifdef CONFIG_FS_ROMFS
/* Create a ROM disk for the ?/bin filesystem */
ret = romdisk_register(0, romfs_img, NSECTORS(romfs_img_len), SECTORSIZE);
if (ret < 0)
{
syslog(LOG_ERR, "Failed to register ROMFS at /dev/ram0: %d\n", ret);
}
#endif
#if defined(CONFIG_I2C_DRIVER) && defined(CONFIG_AM335X_I2C0)
am335x_i2c_register(0);
#endif
#if defined(CONFIG_I2C_DRIVER) && defined(CONFIG_AM335X_I2C1)
am335x_i2c_register(1);
#endif
#if defined(CONFIG_I2C_DRIVER) && defined(CONFIG_AM335X_I2C2)
am335x_i2c_register(2);
#endif
#if defined(CONFIG_CAN) && (defined(CONFIG_AM335X_CAN0) || defined(CONFIG_AM335X_CAN1))
am335x_can_register();
#endif
UNUSED(ret);
return ret;
}

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/****************************************************************************
* boards/arm/am335x/beaglebone/src/am335x_leds.c
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 <stdint.h>
#include <stdbool.h>
#include <nuttx/debug.h>
#include <nuttx/board.h>
#include <arch/board/board.h>
#include "chip.h"
#include "arm_internal.h"
#include "beaglebone.h"
/* The beaglebone black has four user LEDs; all four can be controlled from
* software. All are tied to ground and, hence, illuminated by driving the
* output pins to a high value:
*
* 1. LED0 GPMC_A5 GPMC_A5/GMII2_TXD0/RGMII2_TD0/RMII2_TXD0/GPMC_A21/
* PR1_MII1_RXD3/eQEP1B_IN/GPIO1_21
* 2. LED1 GPMC_A6 GPMC_A6/GMII2_TXCLK/RGMII2_TCLK/MMC2_DAT4/GPMC_A22/
* PR1_MII1_RXD2/eQEP1_INDEX/GPIO1_22
* 3. LED2 GPMC_A7 GPMC_A7/GMII2_RXCLK/RGMII2_RCLK/MMC2_DAT5/GPMC_A23/
* PR1_MII1_RXD1/eQEP1_STROBE/GPIO1_23
* 4. LED3 GPMC_A8 GPMC_A8/GMII2_RXD3/RGMII2_RD3/MMC2_DAT6/GPMC_A24/
* PR1_MII1_RXD0/MCASP0_ACLKX/GPIO1_24
* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
* defined. In that case, the usage by the board port is defined in
* include/board.h and src/am335x_leds.c. The LEDs are used to encode OS-
* related events as follows:
*
* SYMBOL Meaning LED state
* LED1 LED3 LED4
* ----------------- ----------------------- ---- ---- ---- ------------
* LED_STARTED NuttX has been started ON OFF OFF
* LED_HEAPALLOCATE Heap has been allocated OFF ON OFF
* LED_IRQSENABLED Interrupts enabled ON ON OFF
* LED_STACKCREATED Idle stack created ON ON OFF
* LED_INIRQ In an interrupt N/C N/C Soft glow
* LED_SIGNAL In a signal handler N/C N/C Soft glow
* LED_ASSERTION An assertion failed N/C N/C Soft glow
* LED_PANIC The system has crashed N/C N/C 2Hz Flashing
* LED_IDLE MCU is in sleep mode Not used
*
* After booting, LED0 and 1 are not longer used by the system and can be
* used for other purposes by the application (Of course, all LEDs are
* available to the application if CONFIG_ARCH_LEDS is not defined.
*/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: am335x_led_initialize
*
* Description:
* Configure LEDs. LEDs are left in the OFF state.
*
****************************************************************************/
void am335x_led_initialize(void)
{
am335x_gpio_config(GPIO_LED0);
am335x_gpio_config(GPIO_LED1);
am335x_gpio_config(GPIO_LED2);
am335x_gpio_config(GPIO_LED3);
}
/****************************************************************************
* Name: board_autoled_on
*
* Description:
* Select the "logical" ON state:
*
* SYMBOL Value Meaning LED state
* LED1 LED3 LED4
* ----------------- ----- ----------------------- ---- ---- ------------
* LED_STARTED 0 NuttX has been started ON OFF OFF
* LED_HEAPALLOCATE 1 Heap has been allocated OFF ON OFF
* LED_IRQSENABLED 2 Interrupts enabled ON ON OFF
* LED_STACKCREATED 2 Idle stack created ON ON OFF
* LED_INIRQ 3 In an interrupt N/C N/C Soft glow
* LED_SIGNAL 3 In a signal handler N/C N/C Soft glow
* LED_ASSERTION 3 An assertion failed N/C N/C Soft glow
* LED_PANIC 3 The system has crashed N/C N/C 2Hz Flashing
* LED_IDLE --- MCU is in sleep mode Not used
*
* LED1 is illuminated by driving the output pins to a high value
* LED3 and LED 4 are illuminated by taking the output to ground.
*
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
void board_autoled_on(int led)
{
switch (led)
{
case 0:
am335x_gpio_write(GPIO_LED0, true);
am335x_gpio_write(GPIO_LED1, true);
am335x_gpio_write(GPIO_LED3, true);
break;
case 1:
am335x_gpio_write(GPIO_LED0, false);
am335x_gpio_write(GPIO_LED1, false);
am335x_gpio_write(GPIO_LED3, true);
break;
case 2:
am335x_gpio_write(GPIO_LED0, false);
am335x_gpio_write(GPIO_LED1, true);
am335x_gpio_write(GPIO_LED3, true);
break;
case 3:
am335x_gpio_write(GPIO_LED3, false);
break;
}
}
#endif
/****************************************************************************
* Name: board_autoled_off
*
* Description:
* Select the "logical" OFF state:
*
* SYMBOL Value Meaning LED state
* LED1 LED3 LED4
* ----------------- ----- ----------------------- ---- ---- ------------
* LED_STARTED 0 NuttX has been started ON OFF OFF
* LED_HEAPALLOCATE 1 Heap has been allocated OFF ON OFF
* LED_IRQSENABLED 2 Interrupts enabled ON ON OFF
* LED_STACKCREATED 2 Idle stack created ON ON OFF
* LED_INIRQ 3 In an interrupt N/C N/C Soft glow
* LED_SIGNAL 3 In a signal handler N/C N/C Soft glow
* LED_ASSERTION 3 An assertion failed N/C N/C Soft glow
* LED_PANIC 3 The system has crashed N/C N/C 2Hz Flashing
* LED_IDLE --- MCU is in sleep mode Not used
*
* LED1 is illuminated by driving the output pins to a high value
* LED3 and LED 4 are illuminated by taking the output to ground.
*
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
void board_autoled_off(int led)
{
switch (led)
{
case 0:
case 1:
case 2:
break;
case 3:
am335x_gpio_write(GPIO_LED3, true);
break;
}
}
#endif
/****************************************************************************
* Name: board_userled_initialize, board_userled, and board_userled_all
*
* Description:
* These interfaces allow user control of the board LEDs.
*
* If CONFIG_ARCH_LEDS is defined, then NuttX will control both on-board
* LEDs up until the completion of boot.
* Then it will continue to control LED1; LED0 is available for
* application use.
*
* If CONFIG_ARCH_LEDS is not defined, then both LEDs are available for
* application use.
*
****************************************************************************/
uint32_t board_userled_initialize(void)
{
/* Initialization already performed in am335x_led_initialize */
return BOARD_NLEDS;
}
void board_userled(int led, bool ledon)
{
switch (led)
{
case USER_LED0:
am335x_gpio_write(GPIO_LED0, ledon);
break;
case USER_LED1:
am335x_gpio_write(GPIO_LED1, ledon);
break;
#ifndef CONFIG_ARCH_LEDS
case USER_LED3:
am335x_gpio_write(GPIO_LED3, ledon);
break;
#endif
}
}
void board_userled_all(uint32_t ledset)
{
board_userled(USER_LED0, (ledset & USER_LED0) != 0);
board_userled(USER_LED1, (ledset & USER_LED1) != 0);
#ifndef CONFIG_ARCH_LEDS
board_userled(USER_LED3, (ledset & USER_LED3) != 0);
#endif
}

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/****************************************************************************
* boards/arm/am335x/beaglebone/src/beaglebone.h
*
* SPDX-License-Identifier: Apache-2.0
*
* 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.
*
****************************************************************************/
#ifndef __BOARDS_ARM_BEAGLEBONE_SRC_BEAGLEBONE_H
#define __BOARDS_ARM_BEAGLEBONE_SRC_BEAGLEBONE_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#include <stdint.h>
#include <arch/irq.h>
#include <nuttx/irq.h>
#include "am335x_gpio.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* LEDs *********************************************************************/
/* The beaglebone has four user LEDs; all four can be controlled from
* software.
* All are tied to ground and, hence, illuminated by driving the output pins
* to a high value:
*
* 1. LED0 GPMC_A5 GPMC_A5/GMII2_TXD0/RGMII2_TD0/RMII2_TXD0/GPMC_A21/
* PR1_MII1_RXD3/eQEP1B_IN/GPIO1_21
* 2. LED1 GPMC_A6 GPMC_A6/GMII2_TXCLK/RGMII2_TCLK/MMC2_DAT4/GPMC_A22/
* PR1_MII1_RXD2/eQEP1_INDEX/GPIO1_22
* 3. LED2 GPMC_A7 GPMC_A7/GMII2_RXCLK/RGMII2_RCLK/MMC2_DAT5/GPMC_A23/
* PR1_MII1_RXD1/eQEP1_STROBE/GPIO1_23
* 4. LED3 GPMC_A8 GPMC_A8/GMII2_RXD3/RGMII2_RD3/MMC2_DAT6/GPMC_A24/
* PR1_MII1_RXD0/MCASP0_ACLKX/GPIO1_24
*/
#define GPIO_LED0 (GPIO_OUTPUT | GPIO_OUTPUT_ZERO | GPIO_PORT1 | GPIO_PIN21)
#define GPIO_LED1 (GPIO_OUTPUT | GPIO_OUTPUT_ZERO | GPIO_PORT1 | GPIO_PIN22)
#define GPIO_LED2 (GPIO_OUTPUT | GPIO_OUTPUT_ZERO | GPIO_PORT1 | GPIO_PIN23)
#define GPIO_LED3 (GPIO_OUTPUT | GPIO_OUTPUT_ZERO | GPIO_PORT1 | GPIO_PIN24)
/* These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
* defined. In that case, the usage by the board port is defined in
* include/board.h and src/am335x_leds.c.
* The LEDs are used to encode OS-related events as follows:
*
* SYMBOL Meaning LED state
* LED1 LED3 LED4
* ----------------- ----------------------- ---- ---- ---- ------------
* LED_STARTED NuttX has been started ON OFF OFF
* LED_HEAPALLOCATE Heap has been allocated OFF ON OFF
* LED_IRQSENABLED Interrupts enabled ON ON OFF
* LED_STACKCREATED Idle stack created ON ON OFF
* LED_INIRQ In an interrupt N/C N/C Soft glow
* LED_SIGNAL In a signal handler N/C N/C Soft glow
* LED_ASSERTION An assertion failed N/C N/C Soft glow
* LED_PANIC The system has crashed N/C N/C 2Hz Flashing
* LED_IDLE MCU is in sleep mode Not used
*
* After booting, LED1 and 3 are not longer used by the system and can be
* used for other purposes by the application (Of course, all LEDs are
* available to the application if CONFIG_ARCH_LEDS is not defined.
*/
/****************************************************************************
* Public Types
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
#ifndef __ASSEMBLY__
/****************************************************************************
* Public Functions Definitions
****************************************************************************/
/****************************************************************************
* Name: am335x_bringup
*
* Description:
* Perform architecture-specific initialization
*
* CONFIG_BOARD_LATE_INITIALIZE=y :
* Called from board_late_initialize().
*
****************************************************************************/
int am335x_bringup(void);
/****************************************************************************
* Name: am335x_led_initialize
*
* Description:
* Configure LEDs. LEDs are left in the OFF state.
*
****************************************************************************/
void am335x_led_initialize(void);
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_ARM_BEAGLEBONE_SRC_BEAGLEBONE_H */