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web commit by jmcneill: Installation notes for Apple M1

    1: [[!meta title="NetBSD/evbarm on Apple Silicon"]]
    2: 
    3: Initial support was added to NetBSD -current for Apple M1 systems on Aug 30, 2021.
    4: 
    5: # Installation
    6: 
    7: Please note that installation on an Apple M1 requires macOS 11.2 or later to be installed first.
    8: 
    9: - Uncompress http://nycdn.netbsd.org/pub/NetBSD-daily/HEAD/latest/evbarm-aarch64/binary/gzimg/arm64.img.gz and write it to a USB drive.
   10: 
   11: - Build and install `sysutils/u-boot-apple-m1` from pkgsrc.
   12:    - The bootloader will be installed to `/usr/pkg/share/u-boot/apple-m1/u-boot.macho`.
   13: 
   14: - Boot the M1 system into 1TR mode by holding the power button at startup. Until the "Loading startup options..." message is displayed, then select Options.
   15:    - In the Utilities menu, select Terminal to bring up a root shell.
   16: 
   17: - Downgrade security and disable SIP. (If you get any errors while doing this, first run `csrutil clear`, reboot, and try again)
   18:     - `# bputil -nkcas`
   19:     - `# csrutil disable`
   20: 
   21: - Copy the u-boot.macho from pkgsrc to the mini over the network (curl, sftp, etc).
   22: 
   23: - Install the new bootloader:
   24:     > kmutil configure-boot -c u-boot.macho -C -v /Volumes/Macintosh\ HD/
   25: 
   26: - Reboot with a USB drive plugged in.
   27: 
   28: # Supported hardware
   29: - Apple Mac mini (M1, 2020)
   30:     - SMP
   31:     - Interrupt controller
   32:     - IOMMU
   33:     - PCIe
   34:         - USB
   35:         - Ethernet
   36:     - Framebuffer console