Remove devicetree script

This script is stale. It hasn't worked since TGL and only produced a few
useful values. The format of devicetree.cb also continues to change with
each SoC generation.

The removal of devmem2 should also fix setup on Debian, which does not
package it.

Signed-off-by: Tim Crawford <tcrawford@system76.com>

docs/adding-a-new-board.md

@@ -77,11 +77,6 @@ Once coreboot is ported, add its configuration.
 cp coreboot/.config models/<model>/coreboot.config
 ```
 
-### devicetree
-
-`generate.sh` does not create `devicetree.cb`. Some values for this file can be
-produced using the `devicetree.py` script.
-
 ### Smart amp
 
 Boards may have a smart amp, which must be configured for speaker output to

scripts/devicetree.py

@@ -1,75 +0,0 @@
-#!/usr/bin/env python3
-# SPDX-License-Identifier: GPL-3.0-only
-
-import os
-import subprocess
-import sys
-
-
-def power_limits():
-    pl1 = int(subprocess.check_output("cat /sys/class/powercap/intel-rapl:0/constraint_0_power_limit_uw", shell=True))
-    pl2 = int(subprocess.check_output("cat /sys/class/powercap/intel-rapl:0/constraint_1_power_limit_uw", shell=True))
-    # Convert from microwatts to watts
-    return pl1 // 1_000_000, pl2 // 1_000_000
-
-def thermal():
-    subprocess.check_call("modprobe msr", shell=True)
-    return int(subprocess.check_output("rdmsr --bitfield 31:24 --decimal 0x1A2", shell=True))
-
-def pch_pm_slp():
-    gen_pmcon_a = int(subprocess.check_output("devmem2 0xfe001020", shell=True).split()[-1], 16)
-    pm_cfg = int(subprocess.check_output("devmem2 0xfe001818", shell=True).split()[-1], 16)
-
-    s3min = (gen_pmcon_a >> 10) & 0b11
-    s4min = (gen_pmcon_a >> 4) & 0b11
-    susmin = (pm_cfg >> 18) & 0b11
-    amin = (pm_cfg >> 16) & 0b11
-    return s3min, s4min, susmin, amin
-
-def lpc():
-    dump = subprocess.check_output("lspci -s 1f.0 -xxx", shell=True).decode("utf-8")
-    extract = []
-    for l in dump.split('\n'):
-        if l.startswith("80") or l.startswith("90"):
-            extract += l.split()[1:]
-
-    # Values are displayed in little endian
-    gen1 = int("0x" + "".join(extract[7:3:-1]), 16)
-    gen2 = int("0x" + "".join(extract[11:7:-1]), 16)
-    gen3 = int("0x" + "".join(extract[15:11:-1]), 16)
-    gen4 = int("0x" + "".join(extract[19:15:-1]), 16)
-    return gen1, gen2, gen3, gen4
-
-
-if __name__ == '__main__':
-    if os.geteuid() != 0:
-        sys.exit("Must run as root")
-
-    pl1, pl2 = power_limits()
-    print("""\t# Power limits
-\tregister "power_limits_config" = "{{
-\t\t.tdp_pl1_override = {},
-\t\t.tdp_pl2_override = {},
-\t}}"
-""".format(pl1, pl2))
-
-    s3min, s4min, susmin, amin = pch_pm_slp()
-    print("""\t# Power
-\tregister "PchPmSlpS3MinAssert" = "{}"
-\tregister "PchPmSlpS4MinAssert" = "{}"
-\tregister "PchPmSlpSusMinAssert" = "{}"
-\tregister "PchPmSlpAMinAssert" = "{}"
-""".format(s3min, s4min, susmin, amin))
-
-    thermal = thermal()
-    print("""\t# Thermal
-\tregister "tcc_offset" = "{}"
-""".format(thermal))
-
-    gen1, gen2, gen3, gen4 = lpc()
-    print("""\t\tdevice pci 1f.0 on\t# LPC Interface
-\t\t\tregister "gen1_dec" = "{:#010x}"
-\t\t\tregister "gen2_dec" = "{:#010x}"
-\t\t\tregister "gen3_dec" = "{:#010x}"
-\t\t\tregister "gen4_dec" = "{:#010x}"
-\t\tend""".format(gen1, gen2, gen3, gen4))

scripts/install-deps.sh

@@ -23,13 +23,11 @@ if [[ "${ID}" =~ "debian" ]] || [[ "${ID_LIKE}" =~ "debian" ]]; then
     ccache \
     cmake \
     curl \
-    devmem2 \
     dosfstools \
     flashrom \
     git-lfs \
     libncurses-dev \
     libudev-dev \
-    msr-tools \
     mtools \
     parted \
     python-is-python3 \
@@ -47,7 +45,6 @@ elif [[ "${ID}" =~ "fedora" ]] || [[ "${ID_LIKE}" =~ "fedora" ]]; then
     flashrom \
     git-lfs \
     libuuid-devel \
-    msr-tools \
     mtools \
     ncurses-devel \
     parted \
@@ -65,7 +62,6 @@ elif [[ "${ID}" =~ "arch" ]] || [[ "${ID_LIKE}" =~ "arch" ]]; then
     dosfstools \
     flashrom \
     git-lfs \
-    msr-tools \
     mtools \
     ncurses \
     parted \