This version of this document is no longer maintained. For the latest documentation, see http://www.qnx.com/developers/docs.

`startup-mvp`

Startup for MVP Motorola SPS evaluation platform (QNX Neutrino)

Syntax:

startup-mvp [-A] [-D channel[.channel_opts]] [-E]
    [-F [~]value]
    [-f [cpu_freq][,[cycles_freq][,timer_freq]]] 
    [-j addr] [-K channel[.channel_opts]] 
    [-N hostname] 
    [-R size] [-r addr,size[,flag]]
    [-S [~]section] [-v[v]...] [-x]

Runs on:

MVP Motorola SPS evaluation platform (PowerPC)

Options:

-A

Reboot the system on any abnormal termination of the kernel. The default is to display information about the crash, and then halt.

-D channel[.channel_opts]

Specify an output channel for debugging information. See below for details.

-E

Enable Procnto-600 to save and restore the EAR (External Address Register) register (on chips that have it) during context switches. The EAR register will be saved/restored only if the -E option is set.

-F [~]value

Control the flags field in the cpuinfo section of the system page:

value -- OR the flags field with value
~value -- AND the flags field with ~value

The option was added in the QNX Neutrino Core OS 6.3.2.

For more information about the flags, see "Structure of the system page" in the Customizing Image Startup Programs chapter of the Building Embedded Systems guide.

-f [cpu_freq][,[cycles_freq][,timer_freq]]

Specify CPU frequencies. All frequencies can be followed by H for hertz, K for kilohertz, or M for megahertz (these suffixes aren't case-sensitive). If no suffix is given, the library assumes megahertz if the number is less than 1000; otherwise it assumes hertz.

If they're specified, cpu_freq, cycles_freq, and timer_freq are used to set the corresponding variables in the startup code:

cpu_freq -- the CPU clock frequency. It's also used to set the speed field in the cpuinfo section of the system page.
cycles_freq -- the frequency at which the value returned by ClockCycles() increments. It's also used to set the cycles_per_sec field in the qtime section of the system page.
timer_freq -- the frequency at which the timer chip input runs. It's also used to set the timer_rate and timer_scale values of the qtime section of the system page.

If a variable is zero when it comes time to set the field(s) on the system page, the library code attempts to deduce the proper value by using one of the other frequency variables. Which one it uses depends on the particular CPU and hardware.

-j addr

For use with JTAG/hardware debuggers.

Reserve 4 bytes of RAM at the physical address specified by addr, and copy the physical addres of the location of the system page to addr in RAM so that it can be retrieved by a hardware debugger.

-K channel[.channel_opts]

Specify an output channel for kernel debugger information. See below for details.

-N hostname

Specify the node name. The default is the local host.

-R size

Remove size memory from system use. This is useful for testing in a restricted-memory environment. The size is in bytes, unless followed by one of K (kilobytes), M (megabytes), or G (gigabytes).

-r addr,size[,flag]

Remove size memory from system use starting at addr.

The flag is an optional argument used to specify if the memory should be cleared:

If the value of the flag passed is:	Memory:
None	Clears to 0
0	Clears to 0
1	Does not clear

-S [~]section

Turn on (or, if you use ~section, off) output of the specified syspage section's information. Use this to restrict the amount of syspage information. For more information, see the description of print_syspage() in the Customizing Image Startup Programs chapter of Building Embedded Systems.

-v[v]...

Be verbose. More v characters cause even more verbosity.

-x

Enable extended addressing. This lets you access physical addresses above 4G.

This option has an effect only if the CPU supports more than 32 address lines. On PowerPC CPUs, extended addressing is supported if the PPC_CPU_XAEN bit is on in the SYSPAGE_ENTRY(cpuinfo)->flags. For more information, see "Structure of the system page" in the Customizing Image Startup Programs chapter of Building Embedded Systems.

Debug channels

The debug channel specified with the -D and -K options can be:

MPSC[.baud[.clock[.divisor]][.port[^shift]]]

Use GT64260 MPSC port, with:

baud: Specify the baud rate for the debug channel. The default is 9600.
clock: Specify the clock rate (in Hz) input to the chip. The default is 66000000.
divisor: Specify the divisor used on the clock rate by the chip. The default is 16.
port: Specify the I/O port base address for the MPSC port, in hexadecimal. The default is F8000000.
shift: Specify the spacing between the I/O registers, in 2^shift bytes. The default is 0.

The default -D and -K settings for the MPSC port are:

-D MPSC.9600.66000000.16.0xf8000000^0
-K MPSC.9600.66000000.16.0xf8000000^0

Description:

The startup-mvp program is responsible for initializing the MVP Motorola SPS evaluation platform.

Examples:

See ${QNX_TARGET}/ppcbe/boot/sys/build.