SAMA5D4-EK: NSH confuration now has FAT/ROMFS, /dev/zero, /dev/random via TRNG, an NSH startup script, and a RAM disk at /tmp

This commit is contained in:
Gregory Nutt 2014-06-28 16:11:41 -06:00
parent 4dbf708e14
commit caf1b2d641
6 changed files with 220 additions and 34 deletions

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@ -2265,14 +2265,18 @@ TRNG and /dev/random
NSH can be configured to enable the SAMA5 TRNG peripheral so that it
provides /dev/random. The following configuration will enable the TRNG,
/dev/random, and the simple test of /dev/random at apps/examples/ranadom:
and support for /dev/random:
System Type:
CONFIG_SAMA5_TRNG=y : Enable the TRNG peripheral
Drivers (automatically selected):
Drivers:
CONFIG_DEV_RANDOM=y : Enable /dev/random
A simple test of /dev/random is available at apps/examples/random and
can be enabled as a NSH application via the following additional
configuration settings:
Applications -> Examples
CONFIG_EXAMPLES_RANDOM=y : Enable apps/examples/random
CONFIG_EXAMPLES_MAXSAMPLES=64 : Default settings are probably OK

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@ -2535,14 +2535,18 @@ TRNG and /dev/random
NSH can be configured to enable the SAMA5 TRNG peripheral so that it
provides /dev/random. The following configuration will enable the TRNG,
/dev/random, and the simple test of /dev/random at apps/examples/ranadom:
and support for /dev/random:
System Type:
CONFIG_SAMA5_TRNG=y : Enable the TRNG peripheral
Drivers (automatically selected):
Drivers:
CONFIG_DEV_RANDOM=y : Enable /dev/random
A simple test of /dev/random is available at apps/examples/random and
can be enabled as a NSH application via the following additional
configuration settings:
Applications -> Examples
CONFIG_EXAMPLES_RANDOM=y : Enable apps/examples/random
CONFIG_EXAMPLES_MAXSAMPLES=64 : Default settings are probably OK

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@ -2628,14 +2628,18 @@ TRNG and /dev/random
NSH can be configured to enable the SAMA5 TRNG peripheral so that it
provides /dev/random. The following configuration will enable the TRNG,
/dev/random, and the simple test of /dev/random at apps/examples/ranadom:
and support for /dev/random:
System Type:
CONFIG_SAMA5_TRNG=y : Enable the TRNG peripheral
Drivers (automatically selected):
Drivers:
CONFIG_DEV_RANDOM=y : Enable /dev/random
A simple test of /dev/random is available at apps/examples/random and
can be enabled as a NSH application via the following additional
configuration settings:
Applications -> Examples
CONFIG_EXAMPLES_RANDOM=y : Enable apps/examples/random
CONFIG_EXAMPLES_MAXSAMPLES=64 : Default settings are probably OK
@ -3206,51 +3210,112 @@ Configurations
U-Boot> fatload mmc 0 0x20008000 nuttx.bin
U-Boot> go 0x20008040
4. This configuration has support for NSH built-in applications enabled.
However, no built-in applications are selected in the base configuration.
4. This configuration supports /dev/null, /dev/zero, and /dev/random.
5. This configuration has support for the FAT file system built in.
However, by default, there are no block drivers initialized. The FAT
file system can still be used to create RAM disks.
CONFIG_DEV_NULL=y : Enables /dev/null
CONFIG_DEV_ZERO=y : Enabled /dev/zero
6. The SAMA5D4-EK includes for an AT25 serial DataFlash. Support for that
Support for /dev/random is implemented using the SAMA5D4's True
Random Number Generator (TRNG). See the section above entitled
"TRNG and /dev/random" for information about configuring /dev/random.
CONFIG_SAMA5_TRNG=y : Enables the TRNG peripheral
CONFIG_DEV_RANDOM=y : Enables /dev/random
5. This configuration has support for NSH built-in applications enabled.
6. This configuration has support for the FAT and ROMFS file systems
built in.
The FAT file system includes long file name support. Please be aware
that Microsoft claims patents against the long file name support (see
more discussion in the top-level COPYING file).
CONFIG_FS_FAT=y : Enables the FAT file system
CONFIG_FAT_LCNAMES=y : Enable lower case 8.3 file names
CONFIG_FAT_LFN=y : Enables long file name support
CONFIG_FAT_MAXFNAME=32 : Arbitrarily limits the size of a path
segment name to 32 bytes
The ROMFS file system is enabled simply with:
CONFIG_FS_ROMFS=y : Enable ROMFS file system
6. An NSH star-up script is provided by the ROMFS file system. The ROMFS
file system is mounted at /etc and provides:
|- dev/
| `- ram0
`- etc/
`- init.d/
`- rcS
(There will, of course, be other devices uner /dev include /dev/console,
/dev/null, /dev/zero, /dev/random, etc.).
Relevant configuration options include:
CONFIG_NSH_ROMFSETC=y : Enable mounting at of startup file system
CONFIG_NSH_ROMFSMOUNTPT="/etc" : Mount at /etc
CONFIG_NSH_ROMFSDEVNO=0 : Device is /dev/ram0
CONFIG_NSH_ARCHROMFS=y : ROMFS image is at
configs/sama5d4-ek/include/nsh_romfsimg.h
The content of /etc/init.d/rcS can be see in the file rcS.template that
can be found at: configs/sama5d4-ek/include/rcS.template:
mkrd -m 2 -s 512 1024
mkfatfs /dev/ram1
mount -t vfat /dev/ram1 /tmp
The above commands will create a RAM disk block device at /dev/ram1.
The RAM disk will take 0.4MiB of memory (512 x 1024). Then it will
create a FAT file system on the ram disk and mount it at /tmp. So
after NSH starts and runs the rcS script, we will have:
|- dev/
| |- ram0
| `- ram2
|- etc/
| `- init.d/
| `- rcS
`- tmp/
The /tmp directory can them be used for and scratch purpose.
7. The SAMA5D4-EK includes for an AT25 serial DataFlash. Support for that
serial FLASH can be enabled by modifying the NuttX configuration as
described above in the paragraph entitled "AT25 Serial FLASH".
7. Enabling HSMCI support. The SAMA4D4-EK provides a two SD memory
8. Enabling HSMCI support. The SAMA4D4-EK provides a two SD memory
card slots: (1) a full size SD card slot (J10), and (2) a microSD
memory card slot (J11). The full size SD card slot connects via HSMCI0;
the microSD connects vi HSMCI1. Support for both SD slots can be enabled
with the settings provided in the paragraph entitled "HSMCI Card Slots"
above.
8. Support the USB low-, high- and full-speed OHCI host driver can be enabled
9. Support the USB low-, high- and full-speed OHCI host driver can be enabled
by changing the NuttX configuration file as described in the section
entitled "USB High-Speed Host" above.
9. Support the USB high-speed USB device driver (UDPHS) can be enabled
10. Support the USB high-speed USB device driver (UDPHS) can be enabled
by changing the NuttX configuration file as described above in the
section entitled "USB High-Speed Device."
10. I2C Tool. NuttX supports an I2C tool at apps/system/i2c that can be
11. I2C Tool. NuttX supports an I2C tool at apps/system/i2c that can be
used to peek and poke I2C devices. See the discussion above under
"I2C Tool" for detailed configuration settings.
11. Networking support via the can be added to NSH by modifying the
12. Networking support via the can be added to NSH by modifying the
configuration. See the "Networking" section above for detailed
configuration settings.
12. The Real Time Clock/Calendar (RTC) may be enabled by reconfiguring NuttX.
13. The Real Time Clock/Calendar (RTC) may be enabled by reconfiguring NuttX.
See the section entitled "RTC" above for detailed configuration settings.
13. This example can be configured to exercise the watchdog timer test
14. This example can be configured to exercise the watchdog timer test
(apps/examples/watchdog). See the detailed configuration settings in
the section entitled "Watchdog Timer" above.
14. This example can be configured to enable the SAMA5 TRNG peripheral so
that it provides /dev/random. See the section entitled "TRNG and
/dev/random" above for detailed configuration information.
STATUS:
See the To-Do list below

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@ -0,0 +1,89 @@
unsigned char romfs_img[] = {
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};
unsigned int romfs_img_len = 1024;

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@ -0,0 +1,6 @@
# Create a RAMDISK at /dev/ram1, size 0.5MiB, format it with a FAT
# file system and mount it at /tmp
mkrd -m 2 -s 512 1024
mkfatfs /dev/ram1
mount -t vfat /dev/ram1 /tmp

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@ -209,7 +209,7 @@ CONFIG_SAMA5_USART4=y
# CONFIG_SAMA5_LCDC is not set
# CONFIG_SAMA5_ISI is not set
# CONFIG_SAMA5_SHA is not set
# CONFIG_SAMA5_TRNG is not set
CONFIG_SAMA5_TRNG=y
# CONFIG_SAMA5_ARM is not set
# CONFIG_SAMA5_FUSE is not set
# CONFIG_SAMA5_MPDDRC is not set
@ -404,7 +404,9 @@ CONFIG_PTHREAD_STACK_DEFAULT=2048
#
CONFIG_DISABLE_POLL=y
CONFIG_DEV_NULL=y
# CONFIG_DEV_ZERO is not set
CONFIG_DEV_ZERO=y
CONFIG_ARCH_HAVE_RNG=y
CONFIG_DEV_RANDOM=y
# CONFIG_LOOP is not set
# CONFIG_RAMDISK is not set
# CONFIG_CAN is not set
@ -530,7 +532,7 @@ CONFIG_FAT_MAXFNAME=32
# CONFIG_FS_FATTIME is not set
# CONFIG_FAT_DMAMEMORY is not set
# CONFIG_FS_NXFFS is not set
# CONFIG_FS_ROMFS is not set
CONFIG_FS_ROMFS=y
# CONFIG_FS_SMARTFS is not set
# CONFIG_FS_BINFS is not set
# CONFIG_FS_PROCFS is not set
@ -664,6 +666,7 @@ CONFIG_EXAMPLES_NSH_CXXINITIALIZE=y
# CONFIG_EXAMPLES_PIPE is not set
# CONFIG_EXAMPLES_POSIXSPAWN is not set
# CONFIG_EXAMPLES_QENCODER is not set
# CONFIG_EXAMPLES_RANDOM is not set
# CONFIG_EXAMPLES_RGMP is not set
# CONFIG_EXAMPLES_ROMFS is not set
# CONFIG_EXAMPLES_SENDMAIL is not set
@ -788,6 +791,17 @@ CONFIG_NSH_NESTDEPTH=3
# CONFIG_NSH_DISABLE_ITEF is not set
# CONFIG_NSH_DISABLE_LOOPS is not set
# CONFIG_NSH_DISABLEBG is not set
CONFIG_NSH_ROMFSETC=y
# CONFIG_NSH_ROMFSRC is not set
CONFIG_NSH_ROMFSMOUNTPT="/etc"
CONFIG_NSH_INITSCRIPT="init.d/rcS"
CONFIG_NSH_ROMFSDEVNO=0
CONFIG_NSH_ROMFSSECTSIZE=64
CONFIG_NSH_ARCHROMFS=y
CONFIG_NSH_FATDEVNO=1
CONFIG_NSH_FATSECTSIZE=512
CONFIG_NSH_FATNSECTORS=1024
CONFIG_NSH_FATMOUNTPT="/tmp"
CONFIG_NSH_CONSOLE=y
#
@ -862,6 +876,10 @@ CONFIG_READLINE_ECHO=y
# P-Code Support
#
#
# PHY Tool
#
#
# Power Off
#