- MSR modification may void your CPU's (or system board's) warranty. Proceed with care. I'm not responsible for any destruction caused by this article.
- MSR address (greatly) differs from CPU to CPU. Check your own CPU's MSR address using Intel's documentation.
- Only tested on Intel i7-8550U (Kaby Lake R).
- This article is translation of this article. If you can understand Korean, I recommend reading that article, not this.
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# first, get the iso from http://releases.ubuntu.com/ | |
# make working dir hierarchy in /tmp (you'll need enough ram for this) | |
sudo mkdir -p /tmp/custom/{_squash,_work,iso,newiso,newlive,project} | |
sudo mount -o loop ~/Downloads/ubuntu-18.10-desktop-amd64.iso /tmp/custom/iso | |
sudo mount -t squashfs /tmp/custom/iso/casper/filesystem.squashfs /tmp/custom/_squash | |
sudo mount -t overlay overlay -onoatime,lowerdir=/tmp/custom/_squash,upperdir=/tmp/custom/project,workdir=/tmp/custom/_work /tmp/custom/newlive | |
# customize the live fs with systemd-nspawn (a better chroot) | |
sudo systemd-nspawn --bind-ro=/run/systemd/resolve/resolv.conf:/etc/resolv.conf --setenv=RUNLEVEL=1 -D /tmp/custom/newlive |
The Digilent JTag uses FT2232, but its configuration EEPROM contains secrete data needed to be recoginzed by Xilinx ISE/Vivado. The following method only works on linux (tested on Ubuntu16.04), but the patched FT2232 doggle also works on Windows. Since WSL1 does not provide USB device access, the following method will not work for WSL1.
DONT use FT_Prog on offical Digilent cable, as it can trash the firmware! The offical eeprom contains secrete data that cannot be handled correctly by FT_Prog.
Here are steps to create a Digilent-like Jtag that can be used in Xilinx ISE and Vivado
- Install softwares:
sudo apt-get install libftdi1 ftdi-eeprom
- Create a file "flash_digilent.conf" with the following content: