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- # This is the sample uEnv.txt file for HiFive Unleashed U-boot
- # The current convention (SUBJECT TO CHANGE) is that this file
- # will be loaded from the first MSDOS(fat) GPT partition on the
- # MMC card.
- # for debugging boot
- bootargs=video=640x480 console=ttySI0 root=/dev/mmcblk0p2 rootwait
- # for normal boot
- #bootargs=video=640x480 root=/dev/mmcblk0p2 rootwait
- # To boot from partition 2 of an NVME drive (with a PCI iofpga,
- # such as the MicroSemi expansion board, uncomment below:
- #bootargs=debug console=tty0 console=ttySIF0 root=/dev/nvme0n1p2
- # to boot an initramfs (buildroot or debian/etc) use this
- #setupchosen=run setupvml; run setupird
- # to boot with straight to the root= parition, uncomment below
- # so we do not set the ramdisk pointers
- #setupchosen=run setupvml
- setupchosen=run setupird
- # The FIT file to boot from
- fitfile=hifiveu.fit
- # The rest of this is mostly of interest to u-boot developers
- # below much match what's in FIT (ugha)
- bbladdr=80000000
- fdtaddr=81f00000
- vmladdr=80200000
- irdaddr=82000000
- # oh the hack.. use a large size.. ugh
- irdsize=01000000
- vmlsize=00800000
- newfdt=f0000000
- # Use the FDT in the FIT image..
- #setupfdt1=fdt addr ${fdtaddr}; fdt resize; fdt chosen; fdt move ${fdtaddr} ${newfdt}
- #use FDT that came with uboot
- #setupfdt1=fdt addr ${newfdt}; fdt resize; fdt chosen; fdt move ${fdtaddr} ${newfdt}
- #Use fit image, but don't call fdt move (TODO: understand later)
- setupfdt1=fdt addr ${newfdt}; fdt resize; fdt chosen
- setupird=setexpr irdend ${irdaddr} + ${irdsize}; fdt set /chosen linux,initrd-start <0x0 0x${irdaddr}>; fdt set /chosen linux,initrd-end <0x0 0x${irdend}>
- setupvml=setexpr vmlend ${vmladdr} + ${vmlsize}; fdt set /chosen riscv,kernel-start <0x0 0x${vmladdr}>; fdt set /chosen riscv,kernel-end <0x0 0x${vmlend}>
- #setupfdt2=fdt set /chosen bootargs ${bootargs}; fdt print /chosen
- setupfdt2=fdt print /chosen; fdt set /chosen bootargs "${bootargs}"; fdt set /firmware uboot,ver ${ver}; fdt print /chosen
- bootwait=setenv _delay ${bootdelay}; echo ${_delay}; while test ${_delay} > 0; do sleep 1; setexpr _delay ${_delay} - 1; echo ${_delay}; done
- # this assumes ${fileaddr} is already set!!
- boot2=fatload mmc 0:1 ${fileaddr} ${fitfile}; bootm start ${fileaddr}; run setupfdt1; run setupchosen; run setupfdt2; bootm loados ${fileaddr}; echo "Booting kernel in"; run bootwait; go 80000000
- # if you want to network boot, for testing, uncomment the following:
- #boot2=dhcp; env import -t ${fileaddr} ${filesize}; run boot2
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