From e9f9cd14cc71826957877999fd063dd080de4751 Mon Sep 17 00:00:00 2001 From: Stijn Tintel Date: Mon, 1 Nov 2021 23:39:48 +0200 Subject: [PATCH] bcm27xx: add support for Raspberry Pi Zero 2 Due to licensing uncertainty, we do not include the firmwares for the wireless chips used in the Raspberry Pi Zero 2 W. To have working wireless, follow the instructions below. For people building their own images: mkdir -p files/lib/firmware/brcm wget -P files/lib/firmware/brcm/ https://github.com/RPi-Distro/firmware-nonfree/raw/bullseye/debian/config/brcm80211/brcm/brcmfmac43436-sdio.bin wget -P files/lib/firmware/brcm/ https://github.com/RPi-Distro/firmware-nonfree/raw/bullseye/debian/config/brcm80211/brcm/brcmfmac43436-sdio.txt wget -P files/lib/firmware/brcm/ https://github.com/RPi-Distro/firmware-nonfree/raw/bullseye/debian/config/brcm80211/brcm/brcmfmac43436s-sdio.bin wget -P files/lib/firmware/brcm/ https://github.com/RPi-Distro/firmware-nonfree/raw/bullseye/debian/config/brcm80211/brcm/brcmfmac43436s-sdio.txt Now build the OpenWrt image as usual, and it will include the firmware files in the correct location. For people using ext4 images: Write the ext4 image to the sdcard, then mount the 2nd partition and put the firmware files from the links above in /lib/firmware/brcm relative from the mount point where the partition is mounted. For people using squashfs images: Write the squashfs image to the sdcard, place it in the Raspberry Pi Zero 2 W, boot it and wait for the overlay filesystem to be created. Find the offset of the overlay filesystem in sysfs: # cat /sys/devices/virtual/block/loop0/loop/offset 25755648 Shut down the device, unplug the power and move the SD card to a Linux computer. Mount the 2nd partition of the sdcard as a loop device with the offset found earlier. sudo mount /dev/sdh2 -o loop,offset=25755648 /mnt/temp Put the firmware files from the links above in /upper/lib/firmware/brcm relative to the mount point where the loop device is mounted. Signed-off-by: Stijn Tintel Tested-by: Peter van Dijk --- .../bcm27xx/base-files/etc/board.d/02_network | 1 + target/linux/bcm27xx/base-files/etc/diag.sh | 1 + target/linux/bcm27xx/image/Makefile | 16 ++++++++++------ 3 files changed, 12 insertions(+), 6 deletions(-) diff --git a/target/linux/bcm27xx/base-files/etc/board.d/02_network b/target/linux/bcm27xx/base-files/etc/board.d/02_network index b4394f6922..23bc9afdb9 100644 --- a/target/linux/bcm27xx/base-files/etc/board.d/02_network +++ b/target/linux/bcm27xx/base-files/etc/board.d/02_network @@ -23,6 +23,7 @@ raspberrypi,model-b-rev2) ucidef_set_interface_lan "eth0" ;; +raspberrypi,model-zero-2 |\ raspberrypi,model-zero-w) ucidef_set_interface_lan "wlan0" ;; diff --git a/target/linux/bcm27xx/base-files/etc/diag.sh b/target/linux/bcm27xx/base-files/etc/diag.sh index a22ffd3f2a..180b31ec95 100644 --- a/target/linux/bcm27xx/base-files/etc/diag.sh +++ b/target/linux/bcm27xx/base-files/etc/diag.sh @@ -20,6 +20,7 @@ set_state() { raspberrypi,3-compute-module |\ raspberrypi,model-b |\ raspberrypi,model-zero |\ + raspberrypi,model-zero-2 |\ raspberrypi,model-zero-w) status_led="led0" ;; diff --git a/target/linux/bcm27xx/image/Makefile b/target/linux/bcm27xx/image/Makefile index 83d255f326..4cd1052941 100644 --- a/target/linux/bcm27xx/image/Makefile +++ b/target/linux/bcm27xx/image/Makefile @@ -96,13 +96,15 @@ define Device/rpi-2 bcm2709-rpi-2-b bcm2710-rpi-2-b \ bcm2710-rpi-3-b bcm2710-rpi-3-b-plus \ bcm2711-rpi-4-b bcm2711-rpi-400 \ - bcm2710-rpi-cm3 bcm2711-rpi-cm4 + bcm2710-rpi-cm3 bcm2711-rpi-cm4 \ + bcm2710-rpi-zero-2 SUPPORTED_DEVICES := \ - rpi-2-b rpi-3-b rpi-3-b-plus rpi-cm \ + rpi-2-b rpi-3-b rpi-3-b-plus rpi-cm rpi-zero-2 \ raspberrypi,2-model-b raspberrypi,2-model-b-rev2 \ raspberrypi,3-model-b raspberrypi,3-model-b-plus \ raspberrypi,3-compute-module raspberrypi,compute-module-3 \ - raspberrypi,400 raspberrypi,4-compute-module raspberrypi,4-model-b + raspberrypi,400 raspberrypi,4-compute-module raspberrypi,4-model-b \ + raspberrypi,model-zero-2 DEVICE_PACKAGES := \ cypress-firmware-43430-sdio \ cypress-nvram-43430-sdio-rpi-3b \ @@ -126,12 +128,14 @@ define Device/rpi-3 DEVICE_DTS := \ broadcom/bcm2710-rpi-2-b \ broadcom/bcm2710-rpi-3-b broadcom/bcm2710-rpi-3-b-plus \ - broadcom/bcm2710-rpi-cm3 + broadcom/bcm2710-rpi-cm3 \ + broadcom/bcm2710-rpi-zero-2 SUPPORTED_DEVICES := \ - rpi-3-b rpi-3-b-plus \ + rpi-3-b rpi-3-b-plus rpi-zero-2 \ raspberrypi,2-model-b-rev2 \ raspberrypi,3-model-b raspberrypi,3-model-b-plus \ - raspberrypi,3-compute-module raspberrypi,compute-module-3 + raspberrypi,3-compute-module raspberrypi,compute-module-3 \ + raspberrypi,model-zero-2 DEVICE_PACKAGES := \ cypress-firmware-43430-sdio \ cypress-nvram-43430-sdio-rpi-3b \ -- 2.30.2