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# $Header$
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# hush bootscript for PPCBOOT on L1
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# note: all #s are in hex, do _NOT_ prefix it with 0x
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flash_rfs=ffc00000
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flash_krl=fff00000
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tftp_addr=100000
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tftp2_addr=1000000
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if printenv booted
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then
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echo already booted before
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else
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echo first boot in environment, create and save settings
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setenv booted OK
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saveenv
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fi
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setenv autoload no
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# clear out stale env stuff, so we get fresh from dhcp.
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for setting in initrd fromflash kernel rootfs rootpath
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do
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setenv $setting
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done
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dhcp
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# if host provides us with a different bootscript, us it.
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if printenv bootscript
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then
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tftp $tftp_addr $bootcript
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if imi $tftp_addr
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then
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source $tftp_addr
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fi
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fi
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# default base kernel arguments.
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setenv bootargs $xbootargs devfs=mount ip=$ipaddr:$serverip:$gatewayip:$netmask:L1:eth0:off wdt=120
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# Have a kernel in flash?
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if imi $flash_krl
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then
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echo ok kernel to boot from $flash_krl
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setenv kernel $flash_krl
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else
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echo no kernel to boot from $flash_krl, need tftp
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fi
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# Have a rootfs in flash?
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echo test for SQUASHfs at $flash_rfs
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if imi $flash_rfs
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then
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echo appears to be a good initrd image at base of flash OK
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setenv rootfs $flash_rfs
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else
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echo no image at base of flash, need nfsroot or initrd
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fi
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# I boot from flash if told to and I can.
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if printenv fromflash && printenv kernel && printenv rootfs
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then
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echo booting entirely from flash
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setenv bootargs root=/dev/ram0 rw $bootargs
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bootm $kernel $rootfs
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echo oh no failed so I try some other stuff
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fi
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# TFTP down a kernel
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if printenv bootfile
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then
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tftp $tftp_addr $bootfile
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setenv kernel $tftp_addr
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echo I will boot the TFTP kernel
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else
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if printenv kernel
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then
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echo no bootfile specified, will use one from flash
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else
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setenv bootfile /opt/crayx1/craymcu/l1/flash/linux.image
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echo OH NO! we have no bootfile,nor flash kernel! try default: $bootfile
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tftp $tftp_addr $bootfile
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setenv kernel $tftp_addr
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fi
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fi
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# the rootfs.
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if printenv rootpath
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then
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echo rootpath is $rootpath
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if printenv initrd
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then
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echo initrd is also specified, so use $initrd
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tftp $tftp2_addr $initrd
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setenv bootargs root=/dev/ram0 rw cwsroot=$serverip:$rootpath $bootargs
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bootm $kernel $tftp2_addr
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else
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echo initrd is not specified, so use NFSROOT $rootpat
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setenv bootargs root=/dev/nfs ro nfsroot=$serverip:$rootpath $bootargs
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bootm $kernel
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fi
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else
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echo we have no rootpath check for one in flash
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if printenv rootfs
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then
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echo I will use the one in flash
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setenv bootargs root=/dev/mtdblock/0 ro rootfstype=squashfs $bootargs
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bootm $kernel
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else
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setenv rootpath /export/crayl1
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echo OH NO! we have no rootpath,nor flash kernel! try default: $rootpath
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setenv bootargs root=/dev/mtdblock/0 ro rootfstype=squashfs $bootargs
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bootm $kernel
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fi
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fi
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reset
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