$NetBSD: boot.8,v 1.1 2011/01/26 01:18:49 pooka Exp $
Copyright (c) 2010 Microsoft Corp.
Copyright (c) 2010 NetBSD Foundation, Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
.Dd October 5, 2013 .Dt BOOT 8 emips .Os .Sh NAME .Nm boot .Nd system bootstrapping procedures .Sh DESCRIPTION The .Nx kernel is started by placing it near the beginning of physical memory and transferring to the entry point. Since the system is not reenterable, it is necessary to read it in from disk or the network each time it is to be bootstrapped. .Ss Power fail and crash recovery FPGA devices lose their content upon loss of power and must be re-programmed. This is usually accomplished via a JTAG cable programmer, or using a FLASH device. Once the eMIPS processor has been programmed into the FPGA, the system will normally boot itself. An automatic consistency check of the file systems will be performed, and unless this fails, the system will resume multi-user operations. .Sh Xilinx XUP, ML401 and ML402 On these systems the kernel is normally read in from disk. The path used for automatic booting is .Nm /netbsd , but it can be overridden in the optional file .Nm /boot.config stored in the root of the disk filesystem. The user can also type a different filename and a combination of boot options. .Sh BeSquare BEE3 On this system there is no local disk and booting over the network is the only option. Network boot can also be explicitly selected by hitting .Nm f at the boot loader prompt. .Sh KERNEL ARGUMENTS At the boot loader prompt, the user may boot .Nx with a number of options that are passed to the kernel unmodified. Parsing of these options is defined in the file .Nm /sys/boot_flag.h Some additional flags are as follows. l -tag -width xxx -offset indent t Li e Empty -- this argument requests .Nx to ignore all symbolic information and empty its initial symbol table. t Li n Name -- Prompt for the root file system device, the system crash dump device, and the path to .Xr init 8 . t Li N NoName -- Do not prompt for the root file system device, the system crash dump device, and the path to .Xr init 8 . If the configured-in devices are present, use them. t Li s Single -- Boot only to single-user mode. .El .Sh SEE ALSO .Xr ddb 4 , .Xr halt 8 , .Xr init 8 , .Xr installboot 8 , .Xr rc 8 , .Xr reboot 8 , .Xr savecore 8 , .Xr shutdown 8 .Sh HISTORY The .Nm command is d .
Copyright (c) 2010 Microsoft Corp.
Copyright (c) 2010 NetBSD Foundation, Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
.Dd October 5, 2013 .Dt BOOT 8 emips .Os .Sh NAME .Nm boot .Nd system bootstrapping procedures .Sh DESCRIPTION The .Nx kernel is started by placing it near the beginning of physical memory and transferring to the entry point. Since the system is not reenterable, it is necessary to read it in from disk or the network each time it is to be bootstrapped. .Ss Power fail and crash recovery FPGA devices lose their content upon loss of power and must be re-programmed. This is usually accomplished via a JTAG cable programmer, or using a FLASH device. Once the eMIPS processor has been programmed into the FPGA, the system will normally boot itself. An automatic consistency check of the file systems will be performed, and unless this fails, the system will resume multi-user operations. .Sh Xilinx XUP, ML401 and ML402 On these systems the kernel is normally read in from disk. The path used for automatic booting is .Nm /netbsd , but it can be overridden in the optional file .Nm /boot.config stored in the root of the disk filesystem. The user can also type a different filename and a combination of boot options. .Sh BeSquare BEE3 On this system there is no local disk and booting over the network is the only option. Network boot can also be explicitly selected by hitting .Nm f at the boot loader prompt. .Sh KERNEL ARGUMENTS At the boot loader prompt, the user may boot .Nx with a number of options that are passed to the kernel unmodified. Parsing of these options is defined in the file .Nm /sys/boot_flag.h Some additional flags are as follows. l -tag -width xxx -offset indent t Li e Empty -- this argument requests .Nx to ignore all symbolic information and empty its initial symbol table. t Li n Name -- Prompt for the root file system device, the system crash dump device, and the path to .Xr init 8 . t Li N NoName -- Do not prompt for the root file system device, the system crash dump device, and the path to .Xr init 8 . If the configured-in devices are present, use them. t Li s Single -- Boot only to single-user mode. .El .Sh SEE ALSO .Xr ddb 4 , .Xr halt 8 , .Xr init 8 , .Xr installboot 8 , .Xr rc 8 , .Xr reboot 8 , .Xr savecore 8 , .Xr shutdown 8 .Sh HISTORY The .Nm command is d .