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tftpbootlz: put command line in dtb

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this makes boot.scr substantially shorter, in anticipation of using it
for first boot of the omnia and not wanting to embed an essay in
a setenv value
This commit is contained in:
Daniel Barlow 2023-12-22 20:09:44 +00:00
parent dfbc72dd51
commit c7b2733bea
1 changed files with 7 additions and 3 deletions
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10
modules/outputs/tftpbootlz.nix
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@ -29,6 +29,9 @@ let
# can't calculate the actual address here until we know how
# big the dtb will be
fdtput -t lx $out/dtb /reserved-memory/phram-rootfs reg 0xdead 0xcafe
cmd="liminix ${cmdline} mtdparts=phram0:999999999999(rootfs) phram.phram=phram0,999999999999,999999999999,${toString config.hardware.flash.eraseBlockSize} root=/dev/mtdblock0";
fdtput -t s $out/dtb /chosen bootargs "$cmd"
dtbStart=$(($kernelStart + $kernelSize))
dtbSize=$(binsize $out/dtb)
rootfsOrigSize=$(binsize64k ${o.rootfs})
@ -38,9 +41,11 @@ let
rootfsLzStart=$(($dtbStart + $dtbSize))
rootfsOrigStart=$(($rootfsLzStart + $rootfsLzSize))
fdtput -t lx $out/dtb /reserved-memory/phram-rootfs reg $(printf "%x" $rootfsOrigStart) $(printf "%x" $rootfsOrigSize)
# dtc -I dtb -O dts -o /dev/stdout $out/dtb ; exit 1
cmd="mtdparts=phram0:''${rootfsOrigSize}(rootfs) phram.phram=phram0,''${rootfsOrigStart},''${rootfsOrigSize},${toString config.hardware.flash.eraseBlockSize} root=/dev/mtdblock0";
cmd="liminix ${cmdline} mtdparts=phram0:''${rootfsOrigSize}(rootfs) phram.phram=phram0,''${rootfsOrigStart},''${rootfsOrigSize},${toString config.hardware.flash.eraseBlockSize} root=/dev/mtdblock0";
fdtput -t s $out/dtb /chosen bootargs "$cmd"
# dtc -I dtb -O dts -o /dev/stdout $out/dtb | grep -A10 reserved-memory; exit 1
(cd $out;
ln -s ${o.zimage} zImage
@ -50,7 +55,6 @@ let
cat > $out/boot.scr << EOF
setenv serverip ${cfg.serverip}
setenv ipaddr ${cfg.ipaddr}
setenv bootargs "liminix ${cmdline} $cmd"
tftpboot $(hex $kernelStart) result/zImage; tftpboot $(hex $dtbStart) result/dtb ; tftpboot $(hex $rootfsLzStart) result/rootfs.lz
lzmadec $(hex $rootfsLzStart) $(hex $rootfsOrigStart)
bootz $(hex $kernelStart) - $(hex $dtbStart)