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Add bitstream loading and run init scripts at boot time #52

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sb10q merged 2 commits from fsagbuya/nix-servo:fast-servo-init into master 2024-04-24 18:03:18 +08:00
Conversation 0 Commits 2 Files Changed 6
6 changed files with 47 additions and 11 deletions
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2
fast-servo/pyfastservo/adc.py
View File

@ -21,7 +21,7 @@ import mmap
import os
import spidev
from common import (
from pyfastservo.common import (
ADC_AFE_CTRL_ADDR,
ADC_BITSLIP_ADDR,
ADC_CH0_HIGH_ADDR,

4
fast-servo/pyfastservo/common.py
View File

@ -22,8 +22,8 @@ MAP_SIZE = 0x1000
MAP_MASK = 0xFFF
PAGESIZE = 0x1000
LINIEN_OFFSET = 0x0
# LINIEN_OFFSET = 0x300000
# LINIEN_OFFSET = 0x0
LINIEN_OFFSET = 0x300000
# ----------------------------------------------------------------
# FRONT PANEL LEDS REGISTER ADDRESSES

2
fast-servo/pyfastservo/dac.py
View File

@ -21,7 +21,7 @@ import mmap
import os
import spidev
from common import (
from pyfastservo.common import (
CH0_HIGH_WORD_ADDR,
CH0_LOW_WORD_ADDR,
CH1_HIGH_WORD_ADDR,

2
fast-servo/pyfastservo/fp_leds.py
View File

@ -21,7 +21,7 @@ import mmap
import os
import time
from common import (
from pyfastservo.common import (
LED0_BASE_ADDR,
LED1_BASE_ADDR,
LED2_BASE_ADDR,

4
fast-servo/pyfastservo/initialize.py
View File

@ -17,9 +17,7 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
import adc
import si5340
import dac
from pyfastservo import adc, si5340, dac
def main():
si5340.configure_si5340()

44
flake.nix
View File

@ -180,6 +180,27 @@
'';
};
pyfastservo = pkgs-armv7l.python3Packages.buildPythonPackage rec {
name = "pyfastservo";
src = ./fast-servo;
preBuild = ''
cat > setup.py << EOF
from setuptools import setup
setup(
name="pyfastservo",
packages=["pyfastservo"],
install_requires=["spidev", "smbus2"],
entry_points = {"console_scripts": ["fp_leds=pyfastservo.fp_leds:main"]},
)
EOF
'';
propagatedBuildInputs = with pkgs-armv7l.python3Packages; [
spidev
smbus2
];
};
mkbootimage = pkgs.stdenv.mkDerivation {
pname = "mkbootimage";
version = "2.3dev";
@ -209,8 +230,25 @@
extraModules = [
"${patched-not-os}/zynq_image.nix"
] ++ pkgs.lib.optionals (board == "fast-servo") [
({ config, pkgs, ... }: {
environment.systemPackages = [ linien-server ];
({ config, pkgs, lib, ... }: {
environment.systemPackages = [
linien-server
(pkgs.python3.withPackages(ps: [ pyfastservo ]))
];
boot.postBootCommands = lib.mkAfter ''
# Program the FPGA
set +x
echo "Flashing bitstream..."
sb10q commented 2024-04-24 18:03:08 +08:00
Review

It's not flashing, just loading into SRAM. Please send another PR addressing this incorrect terminology.

It's not flashing, just loading into SRAM. Please send another PR addressing this incorrect terminology.
👍 1
echo 0 > /sys/class/fpga_manager/fpga0/flags
mkdir -p /lib/firmware
cp ${fast-servo-gateware}/gateware.bin /lib/firmware/
echo gateware.bin > /sys/class/fpga_manager/fpga0/firmware
# Run device init scripts
echo "Initializing clock generator, ADC, and DAC..."
python3 -m pyfastservo.initialize
'';
})];
system = "x86_64-linux";
inherit crossSystem;
@ -387,7 +425,7 @@
BASE=$(realpath $(dirname $0))
qemu-img convert -O qcow2 -f raw -o preallocation=metadata $BASE/sd-image.img $IMGDIR/sd-sparse.qcow2
qemu-img create -F qcow2 -f qcow2 -b $IMGDIR/sd-sparse.qcow2 $IMGDIR/sd-overlay.qcow2 1G
qemu-img create -F qcow2 -f qcow2 -b $IMGDIR/sd-sparse.qcow2 $IMGDIR/sd-overlay.qcow2 2G
# Some command arguments are based from samples in Xilinx QEMU User Documentation
# See: https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/821854273/Running+Bare+Metal+Applications+on+QEMU