Skip to content

Stop using deprecated GPIO interface in kexec fixup script #1240

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Draft
alexgg wants to merge 3 commits into
base: master
Choose a base branch
from
Draft

Stop using deprecated GPIO interface in kexec fixup script #1240

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
f7bd471
balena-image-initramfs: increase initramfs max size
alexgg May 6, 2025
80c2cec
balena-image: increase boot partition size
alexgg May 6, 2025
2f0f6cb
initrdscripts: kexec_pi4_fwgpio: stop using deprecated GPIO interface
alexgg May 6, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion layers/meta-balena-raspberrypi/recipes-core/images/balena-image-initramfs.bbappend
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
PACKAGE_INSTALL:remove:revpi = "initramfs-module-migrate"

PACKAGE_INSTALL:append:raspberrypicm4-ioboard-sb = " initramfs-module-kexec-pi4-fwgpio"
IMAGE_ROOTFS_MAXSIZE:raspberrypicm4-ioboard-sb = "51200"
IMAGE_ROOTFS_MAXSIZE:raspberrypicm4-ioboard-sb = "65536"

# increase initramfs maxsize to 40 MiB
IMAGE_ROOTFS_MAXSIZE:raspberrypi5 = "40960"
Expand Down
2 changes: 1 addition & 1 deletion layers/meta-balena-raspberrypi/recipes-core/images/balena-image.inc
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ IMAGE_ROOTFS_SIZE:raspberrypi5="655360"
BALENA_BOOT_SIZE:raspberrypi5="81920"

# Increase boot partition size
BALENA_BOOT_SIZE:raspberrypicm4-ioboard-sb = "131072"
BALENA_BOOT_SIZE:raspberrypicm4-ioboard-sb = "174080"

# Increase Root File system size
IMAGE_ROOTFS_SIZE:revpi-connect-s ?= "319488"
Expand Down
26 changes: 15 additions & 11 deletions layers/meta-balena-raspberrypi/recipes-core/initrdscripts/files/kexec_pi4_fwgpio
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -30,31 +30,35 @@ kexec_pi4_fwgpio_run() {
WIFI_DRIVER_DIR="$(readlink -f "${WIFI_SYSFS_PATH}/driver")"
WIFI_DEV="$(basename "${WIFI_SYSFS_PATH}")"

GPIO_SYSFS_DIR="/sys/class/gpio"
GPIOCHIP="gpiochip1"

FW_GPIO_BASE="504"
# gpiochip1 - 8 lines:
# line 0: "BT_ON" "shutdown" output active-high [used]
# line 1: "WL_ON" unused output active-high
# line 2: "PWR_LED_OFF" "PWR" output active-low [used]
# line 3: "GLOBAL_RESET" unused output active-high
# line 4: "VDD_SD_IO_SEL" "vdd-sd-io" output active-high [used]
# line 5: "CAM_GPIO" "regulator-cam1" output active-high [used]
# line 6: "SD_PWR_ON" "regulator-sd-vcc" output active-high [used]
# line 7: "SD_OC_N" unused input active-high
BT_ON="0"
WL_ON="1"

NEED_RESET="0"
CURRENT_STATE="0"
for PIN in "${BT_ON}" "${WL_ON}"; do
GPIO=$["${FW_GPIO_BASE}" + "${PIN}"]
echo "${GPIO}" > "${GPIO_SYSFS_DIR}/export"
PIN_VALUE="$(cat "${GPIO_SYSFS_DIR}/gpio${GPIO}/value")"
for GPIO in "${BT_ON}" "${WL_ON}"; do
PIN_VALUE="$(gpioget "${GPIOCHIP}" "${GPIO}")"

if [ "$bootparam_balena_stage2" = "true" ]; then
CURRENT_STATE=$["${CURRENT_STATE}" | ("${PIN_VALUE}" << "${PIN}")]
CURRENT_STATE=$(("${CURRENT_STATE}" | ("${PIN_VALUE}" << "${GPIO}")))
elif [ -n "$bootparam_balena_pi4_fwgpio" ]; then
NEW_VALUE=$[("$bootparam_balena_pi4_fwgpio" >> "${PIN}") & 1]
echo "${NEW_VALUE}" > "${GPIO_SYSFS_DIR}/gpio${GPIO}/value"
NEW_VALUE=$((("$bootparam_balena_pi4_fwgpio" >> "${GPIO}") & 1))
gpioset "${GPIOCHIP}" "${GPIO}=${NEW_VALUE}"

if [ "${PIN_VALUE}" != "${NEW_VALUE}" ]; then
NEED_RESET="1"
fi
fi

echo "${GPIO}" > "${GPIO_SYSFS_DIR}/unexport"
done

if [ "${NEED_RESET}" = "1" ]; then
Expand Down
2 changes: 1 addition & 1 deletion layers/meta-balena-raspberrypi/recipes-core/initrdscripts/initramfs-framework_%.bbappend
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@ SRC_URI:append = " \

PACKAGES:append = " initramfs-module-kexec-pi4-fwgpio"
SUMMARY:initramfs-module-kexec-pi4-fwgpio = "Hook necessary to persist the value of Pi4/CM4 firmware GPIOs after kexec"
RDEPENDS:initramfs-module-kexec-pi4-fwgpio = "initramfs-module-kexec"
RDEPENDS:initramfs-module-kexec-pi4-fwgpio = "initramfs-module-kexec libgpiod-tools"
FILES:initramfs-module-kexec-pi4-fwgpio = "/init.d/73-kexec_pi4_fwgpio"

PACKAGES:remove:revpi = "initramfs-module-migrate"
Expand Down
Loading