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Remove devicetree script

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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>
This commit is contained in:
Tim Crawford 2024-02-20 19:17:31 -07:00 committed by Tim Crawford
parent 85896eca39
commit 7d5a50d26b
3 changed files with 0 additions and 84 deletions
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5
docs/adding-a-new-board.md
View File

@ -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

75
scripts/devicetree.py
View File

@ -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))

4
scripts/install-deps.sh
View File

@ -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 \