Fix the wifi installation of archlinux on MBP

Co-Authored-By: Claude.ai

4 files changed, 99 insertions, 1 deletions

diff --git a/archlinux.md b/archlinux.md
index 7c44d72..ceca6d6 100644
--- a/archlinux.md
+++ b/archlinux.md
@@ -5,8 +5,11 @@
 - Unmount disk (on MacOS ex. `diskutil unmountDisk /dev/diskX`)
 - Create bootable image from iso `sudo dd if=/path/to/image.iso of=/dev/diskX bs=4M status=progress`
 - Boot the `archiso` live image from a bootable USB.
-- Connect to wireless network (if not connected via LAN).
 - Set root password (which will be asked to run the install playbook).
+
+## Generic Machine
+
+- Connect to wireless network (if not connected via LAN).
 - `cp host_vars/archiso.local.example host_vars/archiso.local`
 - Update the `host_vars/archiso.local` file
 - Run the playbook on the ansible controller
@@ -14,6 +17,54 @@
 **Example:**
 
 ```bash
+hostnamectl set-hostname archiso.local
 passwd
 iwctl --passphrase <PASSPHRASE> station wlan0 connect <SSID>
+dhcpcd wlan0
+```
+
+## MacBookPro 2012 (without WIFI)
+
+- On another machine, download the matching broadcom-wl package (using `scripts/get-broadcom-wl.sh`)
+- Copy broadcom-wl package to a FAT32 USB drive
+- Remove conflicting kernel modules (`brcmfmac brcmutil b43 ssb bcma wl`)
+- Load the broadcom-wl driver from USB
+- Connect to wireless network
+- `cp host_vars/mac-archiso.local.example host_vars/mac-archiso.local`
+- Update the `host_vars/mac-archiso.local` file
+- Run the playbook on the ansible controller
+
+**Example:**
+
+```bash
+hostnamectl set-hostname mac-archiso.local
+passwd
+
+# Get the running kernel version (used to find the right package and insmod path)
+uname -r
+
+# Identify USB partition
+lsblk
+# Copy driver to MacBookPro archiso
+mkdir /mnt/usb
+mount /dev/sdb /mnt/usb
+cd /tmp
+bsdtar -xf /mnt/usb/broadcom-wl-6.30.223.271-<REV>-x86_64.pkg.tar.zst
+
+# Fix loading the driver
+rmmod brcmfmac brcmutil b43 ssb bcma wl
+# should be empty
+lsmod | grep -E 'brcmfmac|brcmutil|b43|ssb|bcma|wl'
+# Insert module
+insmod usr/lib/modules/<KERNEL>/extramodules/wl.ko.zst
+# bcma auto-reloads, remove it again
+rmmod bcma
+
+# should show wlan0
+rfkill unblock all
+ip link
+
+# Connect to network
+iwctl --passphrase <PASSPHRASE> station wlan0 connect <SSID>
+dhcpcd wlan0
 ```
diff --git a/host_vars/mac-archiso.local.yml b/host_vars/mac-archiso.local.yml
new file mode 100644
index 0000000..c685d6a
--- /dev/null
+++ b/host_vars/mac-archiso.local.yml
diff --git a/host_vars/mac-archiso.local.yml.example b/host_vars/mac-archiso.local.yml.example
new file mode 100644
index 0000000..86c660a
--- /dev/null
+++ b/host_vars/mac-archiso.local.yml.example
@@ -0,0 +1,45 @@
+---
+hostname: "mac-archlinux.local"
+partition_disk: "/dev/sda"
+partition_wipe: false
+partition_boot:
+  num: 1
+  name: "boot"
+  flags: [boot, esp]
+  part_start: "0%"
+  part_end: "1.0GiB"
+  fstype: "vfat"
+  fstype_opts: "-F 32"
+  dev: "{{ partition_disk }}1"
+  mount_path: "/mnt/boot/efi"
+  fstab_opts: "defaults,nodev,nosuid,noexec,umask=0077"
+partition_swap:
+  num: 2
+  name: "swap"
+  flags: [swap]
+  part_start: "1.0GiB"
+  part_end: "9.0GiB"
+  fstype: "ext4"
+  dev: "{{ partition_disk }}2"
+  mount_path: "none"
+partition_root:
+  num: 4
+  name: "arch-root"
+  part_start: "59.0GiB"
+  part_end: "109.0GiB"
+  fstype: "ext4"
+  dev: "{{ partition_disk }}4"
+  mount_path: "/mnt"
+partition_extras:
+  - num: 3
+    name: "ubuntu-root"
+    part_start: "9.0GiB"
+    part_end: "59.0GiB"
+    fstype: "ext4"
+    dev: "{{ partition_disk }}3"
+  - num: 5
+    name: "home"
+    part_start: "109.0GiB"
+    part_end: "100%"
+    fstype: "ext4"
+    dev: "{{ partition_disk }}4"
diff --git a/inventory/hosts.yml b/inventory/hosts.yml
index 28e3f10..5bb79b5 100644
--- a/inventory/hosts.yml
+++ b/inventory/hosts.yml
@@ -4,6 +4,8 @@ live_environments:
     ansible_connection: ssh
     ansible_ssh_common_args: "-o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null"
   hosts:
+    mac-archiso.local:
+      ansible_user: root
     archiso.local:
       ansible_user: root
     ubuntuiso.local: