# SYNOPSIS
-__novaboot__ \[ options \] \[--\] script...
+**novaboot** --help
-__./script__ \[ options \]
+**novaboot** \[option\]... \[--\] script...
+
+**./script** \[option\]...
# DESCRIPTION
-This program makes it easier to boot NOVA or other operating system
-(OS) on different targets (machines or emulators). It reads a so
-called novaboot script, that specifies the boot configuration, and
-setups the target to boot that configuration. Setting up the target
-means to generate the bootloader configuration files, deploy the
-binaries and other needed files to proper locations, perhaps on a
-remote boot server and reset the target. Then, target's serial output
-is redirected to standard output if that is possible.
-
-A typical way of using novaboot is to make the novaboot script
-executable and set its first line to _\#!/usr/bin/env novaboot_. Then,
+This program makes booting of an operating system (e.g. NOVA or Linux)
+as simple as running a local program. It facilitates booting on local
+or remote hosts or in emulators such as qemu. Novaboot operation is
+controlled by command line options and by a so called novaboot script,
+which can be thought as a generalization of bootloader configuration
+files (see ["NOVABOOT SCRIPT SYNTAX"](#novaboot-script-syntax)). Based on this input,
+novaboot setups everything for the target host to boot the desired
+configuration, i.e. it generates the bootloader configuration file in
+the proper format, deploy the binaries and other needed files to
+required locations, perhaps on a remote boot server and reset the
+target host. Finally, target host's serial output is redirected to
+standard output if that is possible.
+
+Typical way of using novaboot is to make the novaboot script
+executable and set its first line to _#!/usr/bin/env novaboot_. Then,
booting a particular OS configuration becomes the same as executing a
local program - the novaboot script.
1. Run an OS in Qemu. This is the default action when no other action is
specified by command line switches. Thus running `novaboot ./script`
(or `./script` as described above) will run Qemu and make it boot the
-configuration specified in the _script_.
+configuration specified in the `script`.
2. Create a bootloader configuration file (currently supported
-bootloaders are GRUB, GRUB2, Pulsar and uBoot) and copy it with all
-other files needed for booting to another, perhaps remote, location.
+bootloaders are GRUB, GRUB2, ISOLINUX, Pulsar and U-Boot) and copy it
+with all other files needed for booting to a remote boot server.
./script --server=192.168.1.1:/tftp --iprelay=192.168.1.2
This command copies files to the TFTP server and uses
- TCP/IP-controlled relay to reset the test box and receive its serial
- output.
+ TCP/IP-controlled relay to reset the target host and receive its
+ serial output.
-3. Run DHCP and TFTP server on developer's machine to PXE-boot the OS
-from it. E.g.
+3. Run DHCP and TFTP server on developer's machine to PXE-boot the target
+machine from it. E.g.
./script --dhcp-tftp
When a PXE-bootable machine is connected via Ethernet to developer's
- machine, it will boot the configuration described in _script_.
+ machine, it will boot the configuration described in the _script_.
4. Create bootable ISO images. E.g.
novaboot --iso -- script1 script2
- The created ISO image will have GRUB bootloader installed on it and
+ The created ISO image will use ISOLINUX bootloader installed on it and
the boot menu will allow selecting between _script1_ and _script2_
configurations.
Note that the options needed for a specific target can be stored in a
-["CONFIGURATION FILE"](#configuration-file) and then it is sufficient to use only the
-__\-t__ option to specify the name of the target.
+["CONFIGURATION FILE"](#configuration-file). Then it is sufficient to use only the **-t**
+option to specify the name of the target.
# PHASES AND OPTIONS
Novaboot performs its work in several phases. Each phase can be
-influenced by several options, certain phases can be skipped. The list
-of phases (in the execution order) and the corresponding options
-follow.
+influenced by several command line options, certain phases can be
+skipped. The list of phases (in the execution order) and the
+corresponding options follow.
## Configuration reading phase
-After starting, novaboot reads configuration files. By default, it
-searches for files named `.novaboot` starting from the directory of
-the novaboot script (or working directory, see bellow) and continuing
-upwards up to the root directory. The configuration files are read in
-order from the root directory downwards with latter files overriding
-settings from the former ones.
+After starting, novaboot reads configuration files. Their content is
+described in section ["CONFIGURATION FILE"](#configuration-file). By default,
+configuration is read from two locations. First from the configuration
+directory and second from `.novaboot` files along the path to the
+current directory. The later read files override settings from the
+former ones.
+
+Configuration directory is determined by the content of
+NOVABOOT\_CONFIG\_DIR environment variable defaulting to
+`/etc/novaboot.d`. Files in this directory with names consisting
+solely from English letters, numbers, dashes '-' and underscores '\_'
+(note that dot '.' is not included) are read in alphabetical order.
+
+Then novaboot searches for files named `.novaboot` starting from the
+directory of the novaboot script (or working directory, see bellow)
+and continuing upwards up to the root directory. The found
+configuration files are then read in the opposite order (i.e. from the
+root directory downwards). This allows to have, for example, user
+specific configuration in `~/.novaboot` and project specific one in
+`~/project/.novaboot`.
In certain cases, the location of the novaboot script cannot be
determined in this early phase. This happens either when the script is
-read from the standard input or when novaboot is invoked explicitly
-and options precede the script name, as in the example ["4."](#4) above.
-In this case the current working directory is used as a starting point
-for configuration file search.
+read from the standard input or when novaboot is invoked explicitly as
+in the example ["4."](#4) above. In this case the current working
+directory is used as a starting point for configuration file search
+instead of the novaboot script directory.
-- \-c, --config=_filename_
+- -c, --config=_filename_
Use the specified configuration file instead of the default one(s).
## Command line processing phase
-- \--dump-config
+- --dump-config
Dump the current configuration to stdout end exits. Useful as an
initial template for a configuration file.
-- \-h, --help
+- -h, --help
- Print short (__\-h__) or long (__\--help__) help.
+ Print short (**-h**) or long (**--help**) help.
-- \-t, --target=_target_
+- -t, --target=_target_
This option serves as a user configurable shortcut for other novaboot
options. The effect of this option is the same as the options stored
This phases allows to modify the parsed novaboot script before it is
used in the later phases.
-- \-a, --append=_parameters_
+- -a, --append=_parameters_
- Appends a string to the first "filename" line in the novaboot script.
- This can be used to append parameters to the kernel's or root task's
- command line.
+ Append a string to the first `load` line in the novaboot script. This
+ can be used to append parameters to the kernel's or root task's
+ command line. This option can appear multiple times.
-- \-b, --bender
+- -b, --bender
Use `bender` chainloader. Bender scans the PCI bus for PCI serial
ports and stores the information about them in the BIOS data area for
use by the kernel.
-- \--chainloader=_chainloader_
+- --chainloader=_chainloader_
+
+ Specifies a chainloader that is loaded before the kernel and other
+ files specified in the novaboot script. E.g. 'bin/boot/bender
+ promisc'.
- Chainloader that is loaded before the kernel and other files specified
- in the novaboot script. E.g. 'bin/boot/bender promisc'.
+- --dump
-- \--dump
+ Print the modules to boot and their parameters after this phase
+ finishes. Then exit. This is useful for seeing the effect of other
+ options in this section.
- Prints the content of the novaboot script after removing comments and
- evaluating all _\--scriptmod_ expressions. Exit after reading (and
- dumping) the script.
+- -k, --kernel=`file`
-- \--scriptmod=_perl expression_
+ Replace the first word on the first `load` line in the novaboot
+ script with `file`.
+
+- --scriptmod=_perl expression_
When novaboot script is read, _perl expression_ is executed for every
line (in $\_ variable). For example, `novaboot
- --scriptmod=s/sigma0/omega6/g` replaces every occurrence of _sigma0_
+ \--scriptmod=s/sigma0/omega6/g` replaces every occurrence of _sigma0_
in the script with _omega6_.
When this option is present, it overrides _$script\_modifier_ variable
is given multiple times all expressions are evaluated in the command
line order.
-- \--strip-rom
-
- Strip _rom://_ prefix from command lines and generated config files.
- The _rom://_ prefix is used by NUL. For NRE, it has to be stripped.
-
## File generation phase
In this phase, files needed for booting are generated in a so called
-_build directory_ (see TODO). In most cases configuration for a
-bootloader is generated automatically by novaboot. It is also possible
-to generate other files using _heredoc_ or _"<"_ syntax in novaboot
-scripts. Finally, binaries can be generated in this phases by running
-`scons` or `make`.
+_build directory_ (see ["--build-dir"](#build-dir)). In most cases configuration
+for a bootloader is generated automatically by novaboot. It is also
+possible to generate other files using _heredoc_ or _"<"_ syntax in
+novaboot scripts. Finally, binaries can be generated in this phases by
+running `scons` or `make`.
-- \--build-dir=_directory_
+- --build-dir=_directory_
Overrides the default build directory location.
used. Otherwise, it is the directory that contains the first processed
novaboot script.
-- \-g, --grub\[=_filename_\]
+ See also ["BUILDDIR"](#builddir) variable.
+
+- -g, --grub\[=_filename_\]
Generates grub bootloader menu file. If the _filename_ is not
specified, `menu.lst` is used. The _filename_ is relative to the
- build directory (see __\--build-dir__).
+ build directory (see **--build-dir**).
-- \--grub-preamble=_prefix_
+- --grub-preamble=_prefix_
Specifies the _preable_ that is at the beginning of the generated
GRUB or GRUB2 config files. This is useful for specifying GRUB's
timeout.
-- \--grub-prefix=_prefix_
+- --prefix=_prefix_
- Specifies _prefix_ that is put in front of every file name in GRUB's
- `menu.lst`. The default value is the absolute path to the build directory.
+ Specifies _prefix_ (e.g. `/srv/tftp`) that is put in front of every
+ file name in generated bootloader configuration files (or in U-Boot
+ commands).
If the _prefix_ contains string $NAME, it will be replaced with the
- name of the novaboot script (see also __\--name__).
+ name of the novaboot script (see also **--name**).
+
+ If the _prefix_ contains string $BUILDDIR, it will be replaced with
+ the build directory (see also **--build-dir**).
+
+- --grub-prefix
-- \--grub2\[=_filename_\]
+ Alias for **--prefix**.
- Generate GRUB2 menuentry in _filename_. If _filename_ is not
- specified `grub.cfg` is used. The content of the menuentry can be
- customized with __\--grub-preable__, __\--grub2-prolog__ or
- __\--grub\_prefix__ options.
+- --grub2\[=_filename_\]
- In order to use the the generated menuentry on your development
+ Generate GRUB2 menu entry in _filename_. If _filename_ is not
+ specified `grub.cfg` is used. The content of the menu entry can be
+ customized with **--grub-preamble**, **--grub2-prolog** or
+ **--grub\_prefix** options.
+
+ In order to use the the generated menu entry on your development
machine that uses GRUB2, append the following snippet to
`/etc/grub.d/40_custom` file and regenerate your grub configuration,
i.e. run update-grub on Debian/Ubuntu.
source /path/to/nul/build/grub.cfg
fi
-- \--grub2-prolog=_prolog_
+- --grub2-prolog=_prolog_
- Specifies text _preable_ that is put at the beginning of the entry
- GRUB2 entry.
+ Specifies text that is put at the beginning of the GRUB2 menu entry.
-- \-m, --make\[=make command\]
+- -m, --make\[=make command\]
Runs `make` to build files that are not generated by novaboot itself.
-- \--name=_string_
+- --name=_string_
Use the name _string_ instead of the name of the novaboot script.
This name is used for things like a title of grub menu or for the
server directory where the boot files are copied to.
-- \--no-file-gen
+- --no-file-gen
- Do not generate files on the fly (i.e. "<" syntax) except for the
- files generated via "<<WORD" syntax.
+ Do not run external commands to generate files (i.e. "<" syntax and
+ `run` keyword). This switch does not influence generation of files
+ specified with "<<WORD" syntax.
-- \-p, --pulsar\[=mac\]
+- -p, --pulsar\[=mac\]
Generates pulsar bootloader configuration file named `config-_mac_`
The _mac_ string is typically a MAC address and defaults to
_novaboot_.
-- \--scons\[=scons command\]
+- --scons\[=scons command\]
Runs `scons` to build files that are not generated by novaboot
itself.
-- \--gen-only
+- --strip-rom
+
+ Strip _rom://_ prefix from command lines and generated config files.
+ The _rom://_ prefix is used by NUL. For NRE, it has to be stripped.
+
+- --gen-only
Exit novaboot after file generation phase.
checked whether the target is not occupied by another novaboot
user/instance.
-- \--iprelay=_addr\[:port\]_
+- --amt=_"\[user\[:password\]@\]host\[:port\]_
+
+ Use Intel AMT technology to control the target machine. WS management
+ is used to powercycle it and Serial-Over-Lan (SOL) for input/output.
+ The hostname or (IP address) is given by the _host_ parameter. If
+ _password_ is not specified, environment variable AMT\_PASSWORD is
+ used. The _port_ specifies a TCP port for SOL. If not specified, the
+ default is 16992. Default _user_ is admin.
+
+- --iprelay=_addr\[:port\]_
Use TCP/IP relay and serial port to access the target's serial port
and powercycle it. The IP address of the relay is given by _addr_
Note: This option is supposed to work with HWG-ER02a IP relays.
-- \-s, --serial\[=device\]
+- -s, --serial\[=device\]
Target's serial line is connected to host's serial line (device). The
default value for device is `/dev/ttyUSB0`.
The value of this option is exported in NB\_NOVABOOT environment
variable to all subprocesses run by `novaboot`.
-- \--stty=_settings_
+- --stty=_settings_
Specifies settings passed to `stty` invoked on the serial line
- specified with __\--serial__ option. If this option is not given,
+ specified with **--serial** option. If this option is not given,
`stty` is called with `raw -crtscts -onlcr 115200` settings.
-- \--remote-cmd=_cmd_
+- --remote-cmd=_cmd_
Command that mediates connection to the target's serial line. For
example `ssh server 'cu -l /dev/ttyS0'`.
-- \--remote-expect=_string_
+- --remote-expect=_string_
- Wait for reception of _string_ on the remote connection before
- continuing.
+ Wait for reception of _string_ after establishing the the remote
+ connection before continuing.
## File deployment phase
to a particular location, e.g. to a TFTP boot server or to the
`/boot` partition.
-- \-d, --dhcp-tftp
+- -d, --dhcp-tftp
Turns your workstation into a DHCP and TFTP server so that the OS can
be booted via PXE BIOS (or similar mechanism) on the test machine
directly connected by a plain Ethernet cable to your workstation.
- The DHCP and TFTP servers require root privileges and `novaboot`
+ The DHCP and TFTP servers requires root privileges and `novaboot`
uses `sudo` command to obtain those. You can put the following to
- _/etc/sudoers_ to allow running the necessary commands without
- asking for password.
+ _/etc/sudoers_ to allow running the necessary commands without asking
+ for password.
+
+ Cmnd_Alias NOVABOOT = /bin/ip a add 10.23.23.1/24 dev eth0, /bin/ip l set dev eth0 up, /usr/sbin/dhcpd -d -cf dhcpd.conf -lf dhcpd.leases -pf dhcpd.pid, /usr/sbin/in.tftpd --listen --secure -v -v -v --pidfile tftpd.pid *, /usr/bin/touch dhcpd.leases, /usr/bin/pkill --pidfile=dhcpd.pid, /usr/bin/pkill --pidfile=tftpd.pid
+ your_login ALL=NOPASSWD: NOVABOOT
- Cmnd_Alias NOVABOOT = /bin/ip a add 10.23.23.1/24 dev eth0, /bin/ip l set dev eth0 up, /usr/sbin/dhcpd -d -cf dhcpd.conf -lf dhcpd.leases -pf dhcpd.pid, /usr/sbin/in.tftpd --foreground --secure -v -v -v --pidfile tftpd.pid *, /usr/bin/touch dhcpd.leases, /usr/bin/pkill --pidfile=dhcpd.pid, /usr/bin/pkill --pidfile=tftpd.pid
+- --tftp
+
+ Starts a TFTP server on your workstation. This is similar to
+ **--dhcp-tftp** except that DHCP server is not started.
+
+ The TFTP server require root privileges and `novaboot` uses `sudo`
+ command to obtain those. You can put the following to _/etc/sudoers_
+ to allow running the necessary commands without asking for password.
+
+ Cmnd_Alias NOVABOOT = /usr/sbin/in.tftpd --listen --secure -v -v -v --pidfile tftpd.pid *, /usr/bin/pkill --pidfile=tftpd.pid
your_login ALL=NOPASSWD: NOVABOOT
-- \--iso\[=filename\]
+- --tftp-port=_port_
+
+ Port to run the TFTP server on. Implies **--tftp**.
+
+- --iso\[=filename\]
Generates the ISO image that boots NOVA system via GRUB. If no filename
is given, the image is stored under _NAME_.iso, where _NAME_ is the name
- of the novaboot script (see also __\--name__).
+ of the novaboot script (see also **--name**).
-- \--server\[=\[\[user@\]server:\]path\]
+- --server\[=\[\[user@\]server:\]path\]
- Copy all files needed for booting to another location (implies __\-g__
- unless __\--grub2__ is given). The files will be copied (by __rsync__
- tool) to the directory _path_. If the _path_ contains string $NAME,
- it will be replaced with the name of the novaboot script (see also
- __\--name__).
+ Copy all files needed for booting to another location. The files will
+ be copied (by **rsync** tool) to the directory _path_. If the _path_
+ contains string $NAME, it will be replaced with the name of the
+ novaboot script (see also **--name**).
-- \--concat
+- --rsync-flags=_flags_
- If __\--server__ is used and its value ends with $NAME, then after
+ Specifies which _flags_ are appended to `rsync` command line when
+ copying files as a result of _--server_ option.
+
+- --concat
+
+ If **--server** is used and its value ends with $NAME, then after
copying the files, a new bootloader configuration file (e.g. menu.lst)
- is created at _path-wo-name_, i.e. the path specified by __\--server__
+ is created at _path-wo-name_, i.e. the path specified by **--server**
with $NAME part removed. The content of the file is created by
concatenating all files of the same name from all subdirectories of
_path-wo-name_ found on the "server".
-- \--rsync-flags=_flags_
+- --ider
- Specifies which _flags_ are appended to `rsync` command line when
- copying files as a result of _\--server_ option.
+ Use Intel AMT technology for IDE redirection. This allows the target
+ machine to boot from novaboot created ISO image. Implies **--iso**.
+
+ The experimental `amtider` utility needed by this option can be
+ obtained from https://github.com/wentasah/amtterm.
## Target power-on and reset phase
-- \--on, --off
+At this point, the target is reset (or switched on/off). There is
+several ways how this can be accomplished. Resetting a physical target
+can currently be accomplished by the following options: **--amt**,
+**--iprelay**, **--reset-cmd**.
+
+- --on, --off
- Switch on/off the target machine. Currently works only with
- __\--iprelay__.
+ Switch on/off the target machine and exit. The script (if any) is
+ completely ignored. Currently it works only with **--iprelay** or
+ **--amt**.
-- \-Q, --qemu\[=_qemu-binary_\]
+- -Q, --qemu\[=_qemu-binary_\]
Boot the configuration in qemu. Optionally, the name of qemu binary
can be specified as a parameter.
-- \--qemu-append=_flags_
+- --qemu-append=_flags_
Append _flags_ to the default qemu flags (QEMU\_FLAGS variable or
`-cpu coreduo -smp 2`).
-- \-q, --qemu-flags=_flags_
+- -q, --qemu-flags=_flags_
Replace the default qemu flags (QEMU\_FLAGS variable or `-cpu coreduo
- -smp 2`) with _flags_ specified here.
+ \-smp 2`) with _flags_ specified here.
-- \--reset-cmd=_cmd_
+- --reset-cmd=_cmd_
Command that resets the target.
## Interaction with the bootloader on the target
-- \--uboot
+- --uboot\[=_prompt_\]
- Interact with uBoot bootloader to boot the thing described in the
- novaboot script. Implementation of this option is currently tied to a
- particular board that we use. It may be subject to changes in the
- future!
+ Interact with U-Boot bootloader to boot the thing described in the
+ novaboot script. _prompt_ specifies the U-Boot's prompt (default is
+ "=> ", other common prompts are "U-Boot> " or "U-Boot# ").
+ Implementation of this option is currently tied to a particular board
+ that we use. It may be subject to changes in the future!
-- \--uboot-init
+- --uboot-init
- Command(s) to send the uBoot bootloader before loading the images and
- botting them.
+ Command(s) to send the U-Boot bootloader before loading the images and
+ booting them. This option can be given multiple times. After sending
+ commands from each option novaboot waits for U-Boot _prompt_.
-## Target interaction phase
+ If the command contains string _$NB\_MYIP_ then this string is
+ replaced by IPv4 address of eth0 interface.
-In this phase, target's serial output is passed to `novaboot` stdout.
-If `novaboot`'s stdin is on TTY, the stdin is passed to the target
-allowing interactive work with the target.
+- --uboot-addr _name_=_address_
-This phase end when the target hangs up or when Ctrl-C is pressed.
+ Load address of U-Boot's `tftpboot` command for loading _name_,
+ where name is one of _kernel_, _ramdisk_ or _fdt_ (flattened device
+ tree).
-- \--exiton=_string_
+## Target interaction phase
+
+In this phase, target's serial output is redirected to stdout and if
+stdin is a TTY, it is redirected to the target's serial input allowing
+interactive work with the target.
+
+- --exiton=_string_
When _string_ is sent by the target, novaboot exits. This option can
be specified multiple times.
- If _string_ is `-re`, then the next __\--exiton__'s _string_ is
+ If _string_ is `-re`, then the next **--exiton**'s _string_ is
treated as regular expression. For example:
--exiton -re --exiton 'error:.*failed'
-- \-i, --interactive
+- -i, --interactive
Setup things for interactive use of target. Your terminal will be
switched to raw mode. In raw mode, your system does not process input
in any way (no echoing of entered characters, no interpretation
special characters). This, among others, means that Ctrl-C is passed
- to the target and does no longer interrupt novaboot. Use "~." sequence
- to exit novaboot.
+ to the target and does no longer interrupt novaboot. Use "~~."
+ sequence to exit novaboot.
+
+- --expect=_string_
+
+ When _string_ is received from the target, send the string specified
+ with the subsequent **--send\*** option to the target.
+
+- --expect-re=_regex_
+
+ When target's output matches regular expression _regex_, send the
+ string specified with the subsequent **--send\*** option to the target.
+
+- --expect-raw=_perl-code_
+
+ Provides direct control over Perl's Expect module.
+
+- --send=_string_
+
+ Send _string_ to the target after the previously specified
+ **--expect\*** was matched in the target's output. The _string_ may
+ contain escape sequences such as "\\n".
+
+ Note that _string_ is actually interpreted by Perl, so it can contain
+ much more that escape sequences. This behavior may change in the
+ future.
+
+ Example: `--expect='login: ' --send='root\n'`
+
+- --sendcont=_string_
+
+ Similar to **--send** but continue expecting more input.
+
+ Example: `--expect='Continue?' --sendcont='yes\n'`
# NOVABOOT SCRIPT SYNTAX
-The syntax tries to mimic POSIX shell syntax. The syntax is defined with the following rules.
+The syntax tries to mimic POSIX shell syntax. The syntax is defined
+with the following rules.
-Lines starting with "\#" are ignored.
+Lines starting with "#" and empty lines are ignored.
Lines that end with "\\" are concatenated with the following line after
removal of the final "\\" and leading whitespace of the following line.
-Lines in the form _VARIABLE=..._ (i.e. matching '^\[A-Z\_\]+=' regular
-expression) assign values to internal variables. See VARIABLES
+Lines of the form _VARIABLE=..._ (i.e. matching '^\[A-Z\_\]+=' regular
+expression) assign values to internal variables. See ["VARIABLES"](#variables)
section.
-Otherwise, the first word on the line represents the filename
-(relative to the build directory (see __\--build-dir__) of the module to
-load and the remaining words are passed as the command line
-parameters.
-
-When the line ends with "<<WORD" then the subsequent lines until the
-line containing only WORD are copied literally to the file named on
-that line.
-
-When the line ends with "< CMD" the command CMD is executed with
-`/bin/sh` and its standard output is stored in the file named on that
-line. The SRCDIR variable in CMD's environment is set to the absolute
-path of the directory containing the interpreted novaboot script.
-
-Example:
- \#!/usr/bin/env novaboot
- WVDESC=Example program
- bin/apps/sigma0.nul S0\_DEFAULT script\_start:1,1 \\
- verbose hostkeyb:0,0x60,1,12,2
- bin/apps/hello.nul
- hello.nulconfig <<EOF
- sigma0::mem:16 name::/s0/log name::/s0/timer name::/s0/fs/rom ||
- rom://bin/apps/hello.nul
- EOF
-
-This example will load three modules: sigma0.nul, hello.nul and
-hello.nulconfig. sigma0 gets some command line parameters and
-hello.nulconfig file is generated on the fly from the lines between
-<<EOF and EOF.
+Lines starting with `load` keyword represent modules to boot. The
+word after `load` is a file name (relative to the build directory
+(see **--build-dir**) of the module to load and the remaining words are
+passed to it as the command line parameters.
+
+When the `load` line ends with "<<WORD" then the subsequent lines
+until the line containing solely WORD are copied literally to the file
+named on that line. This is similar to shell's heredoc feature.
+
+When the `load` line ends with "< CMD" then command CMD is executed
+with `/bin/sh` and its standard output is stored in the file named on
+that line. The SRCDIR variable in CMD's environment is set to the
+absolute path of the directory containing the interpreted novaboot
+script.
+
+Lines starting with `run` keyword contain shell commands that are run
+during file generation phase. This is the same as the "< CMD" syntax
+for `load` keyboard except that the command's output is not
+redirected to a file. The ordering of commands is the same as they
+appear in the novaboot script.
+
+Example (Linux):
+
+ #!/usr/bin/env novaboot
+ load bzImage console=ttyS0,115200
+ run make -C buildroot
+ load rootfs.cpio < gen_cpio buildroot/images/rootfs.cpio "myapp->/etc/init.d/S99myapp"
+
+Example (NOVA User Land - NUL):
+
+ #!/usr/bin/env novaboot
+ WVDESC=Example program
+ load bin/apps/sigma0.nul S0_DEFAULT script_start:1,1 \
+ verbose hostkeyb:0,0x60,1,12,2
+ load bin/apps/hello.nul
+ load hello.nulconfig <<EOF
+ sigma0::mem:16 name::/s0/log name::/s0/timer name::/s0/fs/rom ||
+ rom://bin/apps/hello.nul
+ EOF
+
+This example will load three modules: `sigma0.nul`, `hello.nul` and
+`hello.nulconfig`. sigma0 receives some command line parameters and
+`hello.nulconfig` file is generated on the fly from the lines between
+`<<EOF` and `EOF`.
## VARIABLES
- HYPERVISOR\_PARAMS
Parameters passed to hypervisor. The default value is "serial", unless
- overriden in configuration file.
+ overridden in configuration file.
- KERNEL
- The kernel to use instead of NOVA hypervisor specified in the
- configuration file. The value should contain the name of the kernel
- image as well as its command line parameters. If this variable is
- defined and non-empty, the variable HYPERVISOR\_PARAMS is not used.
+ The kernel to use instead of the hypervisor specified in the
+ configuration file with the `$hypervisor` variable. The value should
+ contain the name of the kernel image as well as its command line
+ parameters. If this variable is defined and non-empty, the variable
+ HYPERVISOR\_PARAMS is not used.
- QEMU
- Use a specific qemu binary (can be overriden with __\-Q__) and flags
+ Use a specific qemu binary (can be overridden with **-Q**) and flags
when booting this script under qemu. If QEMU\_FLAGS variable is also
specified flags specified in QEMU variable are replaced by those in
QEMU\_FLAGS.
- QEMU\_FLAGS
- Use specific qemu flags (can be overriden with __\-q__).
+ Use specific qemu flags (can be overridden with **-q**).
- WVDESC
- Description of the wvtest-compliant program.
+ Description of the WvTest-compliant program.
- WVTEST\_TIMEOUT
Novaboot can read its configuration from one or more files. By
default, novaboot looks for files named `.novaboot` as described in
-["Configuration reading phase"](#configuration-reading-phase). Alternatively, its location can be
-specified with the __\-c__ switch or with the NOVABOOT\_CONFIG
-environment variable. The configuration file has perl syntax and
-should set values of certain Perl variables. The current configuration
-can be dumped with the __\--dump-config__ switch. Some configuration
-variables can be overriden by environment variables (see below) or by
-command line switches.
+["Configuration reading phase"](#configuration-reading-phase). Alternatively, configuration file
+location can be specified with the **-c** switch or with the
+NOVABOOT\_CONFIG environment variable. The configuration file has Perl
+syntax and should set values of certain Perl variables. The current
+configuration can be dumped with the **--dump-config** switch. Some
+configuration variables can be overridden by environment variables
+(see below) or by command line switches.
Supported configuration variables include:
- $default\_target
Default target (see below) to use when no target is explicitly
- specified on command line with the __\--target__ option.
+ specified on command line with the **--target** option.
- %targets
- Hash of shortcuts to be used with the __\--target__ option. If the hash
- contains, for instance, the following pair of values
+ Hash of target definitions to be used with the **--target** option. The
+ key is the identifier of the target, the value is the string with
+ command line options. For instance, if the configuration file contains:
- 'mybox' => '--server=boot:/tftproot --serial=/dev/ttyUSB0 --grub',
+ $targets{'mybox'} = '--server=boot:/tftproot --serial=/dev/ttyUSB0 --grub',
then the following two commands are equivalent:
Name of the novaboot configuration file to use instead of the default
one(s).
+- NOVABOOT\_CONFIG\_DIR
+
+ Name of the novaboot configuration directory. When not specified
+ `/etc/novaboot.d` is used.
+
- NOVABOOT\_BENDER
- Defining this variable has the same meaning as __\--bender__ option.
+ Defining this variable has the same meaning as **--bender** option.
# AUTHORS
projects / novaboot.git / blobdiff