[jcm@fedora m1n1]$ sudo M1N1DEVICE=/dev/ttyACM1 ./proxyclient/tools/chainload.py -r m1n1-uboot.bin
TTY> CPU init (MIDR: 0x611f0221)...
TTY>   CPU part: 0x22 rev: 0x11
TTY>   CPU: M1 Icestorm
TTY>
TTY> boot_args at 0x803358088
TTY>   revision:     2
TTY>   version:      2
TTY>   virt_base:    0xd128000
TTY>   phys_base:    0x801128000
TTY>   mem_size:     0x1df8b4000
TTY>   top_of_kdata: 0x80335c000
TTY>   video:
TTY>     base:       0x9e3a1c000
TTY>     display:    0x0
TTY>     stride:     0xa00
TTY>     width:      640
TTY>     height:     1136
TTY>     depth:      32bpp
TTY>     density:    1
TTY>   machine_type: 0
TTY>   devtree:      0xeb80000
TTY>   devtree_size: 0x58000
TTY>   cmdline:      -v
TTY>   boot_flags:   0x0
TTY>   mem_size_act: 0x200000000
TTY>
TTY>
TTY>
TTY> m1n1 v1.3.3
TTY> Copyright The Asahi Linux Contributors
TTY> Licensed under the MIT license
TTY>
TTY> Running in EL2
TTY>
TTY> Device info:
TTY>   Model: Macmini9,1
TTY>   Target: J274
TTY>   Board-ID: 0x22
TTY>   Chip-ID: 0x8103
TTY>
TTY> OS FW version: 13.5 (iBoot-8422.141.2)
TTY> System FW version: unknown (iBoot-10151.1.1)
TTY> Heap base: 0x80335c000
TTY> MCC: Initializing T8103 MCC...
TTY> MCC: Initialized T8103 MCC (8 channels)
TTY> MMU: Initializing...
TTY> MMU: RAM base: 0x800000000
TTY> MMU: Top of normal RAM: 0x9e09dc000
TTY> MMU: Unmapping TZ0 region at 0x9e09e4000..0x9e271c000
TTY> MMU: Unmapping TZ1 region at 0x9e09dc000..0x9e09e4000
TTY> MMU: Unmapping TZ3 region at 0x9e6e24000..0x9ffe24000
TTY> MMU: Adding Device-nGnRE mapping at 0x400000000 (0x80000000)
TTY> MMU: Adding Device-nGnRE mapping at 0x480000000 (0x80000000)
TTY> MMU: Adding Device-nGnRE mapping at 0x580000000 (0x80000000)
TTY> MMU: Adding Device-nGnRE mapping at 0x600000000 (0x80000000)
TTY> MMU: Adding Device-nGnRE mapping at 0x6a0000000 (0x20000000)
TTY> MMU: Adding Device-nGnRE mapping at 0x6c0000000 (0x40000000)
TTY> MMU: Adding Device-nGnRE mapping at 0x700000000 (0x100000000)
TTY> MMU: Adding Normal-NC mapping at 0x9fff38000 (0x28000)
TTY> MMU: Adding Normal-NC mapping at 0x9fff08000 (0x8000)
TTY> MMU: Adding Normal-NC mapping at 0x9ffee0000 (0x28000)
TTY> MMU: Adding Normal-NC mapping at 0x9ffeb0000 (0x8000)
TTY> MMU: Adding Normal-NC mapping at 0x9fffb8000 (0x4000)
TTY> MMU: Adding Normal-NC mapping at 0x9fff74000 (0x4000)
TTY> MMU: SCTLR_EL1: 30100180 -> 30901085
TTY> MMU: running with MMU and caches enabled!
TTY> AIC: Version 1 @ 0x23b100000
TTY> WDT registers @ 0x23d2b0000
TTY> WDT disabled
TTY> pmgr: Cleaning up device states...
TTY> pmgr: Enabling 0.AUDIO_P, parent of active device MCA1
TTY> pmgr: Enabling 0.SIO_ADMA, parent of active device MCA1
TTY> pmgr: Enabling 0.ANS2, parent of active device APCIE_ST
TTY> pmgr: Enabling 0.DEBUG, parent of active device DEBUG_USB
TTY> pmgr: initialized, 268 devices on 1 dies found.
TTY> display: Display is external
TTY> display: Dummy framebuffer found, initializing display
TTY> dart: dart /arm-io/dart-dcp at 0x23130c000 is a t8020 (locked)
TTY> dart: dart /arm-io/dart-disp0 at 0x231304000 is a t8020
TTY> dart: dart /arm-io/dart-disp0.0.0 L1 0 is real-time at 0x9fff38000
TTY> dart: dart /arm-io/dart-disp0.0.0 L1 1 is real-time at 0x8035e0000
TTY> dart: dart /arm-io/dart-disp0.0.0 L1 2 is real-time at 0x8035e8000
TTY> dart: dart /arm-io/dart-disp0.0.0 L1 3 is real-time at 0x8035f0000
TTY> rtkit(dcp): booting with version 12
TTY> rtkit(dcp): unknown system endpoint 0x0a
TTY> rtkit(dcp): pre-allocated buffer (ep 0x1, dva 0xf00267000, phys 0x9e6247000)
TTY> rtkit(dcp): unknown oslog message 103ff8000f0025f
TTY> EPIC: got unexpected message 00:0032 during iface start
TTY> EPIC: started interface 3 (disp0-service)
TTY> display: waited 0 ms for display status
TTY> display: connected:1 timing_cnt:54 color_cnt:14
TTY> display: timing mode: valid=1 1920x1200 60.00 Hz
TTY> display: color mode: valid=1 colorimetry=1 eotf=1 encoding=1 bpp=32
TTY> display: swapped! (swap_id=2)
TTY> display: Modeset took 301 ms
TTY> display: Sleeping DCP (external)
TTY> pmgr: resetting device 0.DISP0_CPU0
TTY> fb init: 1920x1200 (30) [s=1920] @0x9e3a1c000
TTY> fb console: max rows 71, max cols 104
TTY> fb: display logo
TTY> Initialization complete.
TTY> Boot policy: sip0 = 127
TTY> Bringing up USB for early debug...
TTY> dart: dart /arm-io/dart-usb0 at 0x382f80000 is a t8020
TTY> USB0: initialized at 0x803ea6030
TTY> dart: dart /arm-io/dart-usb1 at 0x502f80000 is a t8020
TTY> USB1: initialized at 0x803ea6360
TTY> Waiting for proxy connection...  Connected!
Fetching ADT (0x00058000 bytes)...
m1n1 base: 0x802c30000
Total region size: 0x7f0000 bytes
Loading kernel image (0x1b1689 bytes)...
..................................................................
Copying SEPFW (0x5f8000 bytes)...
Adjusting addresses in ADT...
Setting secondary CPU RVBARs...
  cpu1: [0x210150000] = 0x802c30000
  cpu2: [0x210250000] = 0x802c30000
  cpu3: [0x210350000] = 0x802c30000
  cpu4: [0x211050000] = 0x802c30000
  cpu5: [0x211150000] = 0x802c30000
  cpu6: [0x211250000] = 0x802c30000
  cpu7: [0x211350000] = 0x802c30000
Pushing ADT (354044 bytes)...
Setting up bootargs...
Copying stub...
Entry point: 0x802c30800
Reloading into stub at 0x80d160200
TTY> i2c: Error enabling power for /arm-io/i2c0
TTY> usb: i2c init failed.
TTY> Preparing to run next stage at 0x80d160200...
Waiting for reconnection... ....................................................................................................Traceback (most recent call last):
  File "/data/asahi/m1n1/proxyclient/m1n1/proxy.py", line 330, in wait_boot
    return self.reply(self.REQ_BOOT)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/asahi/m1n1/proxyclient/m1n1/proxy.py", line 249, in reply
    reply += self.readfull(1)
             ^^^^^^^^^^^^^^^^
  File "/data/asahi/m1n1/proxyclient/m1n1/proxy.py", line 186, in readfull
    block = self.dev.read(size - len(d))
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.11/site-packages/serial/serialposix.py", line 595, in read
    raise SerialException(
serial.serialutil.SerialException: device reports readiness to read but returned no data (device disconnected or multiple access on port?)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/data/asahi/m1n1/./proxyclient/tools/chainload.py", line 152, in <module>
    p.reload(stub.addr, new_base + bootargs_off, image_addr, new_base, image_size)
  File "/data/asahi/m1n1/proxyclient/m1n1/proxy.py", line 712, in reload
    self.iface.wait_boot()
  File "/data/asahi/m1n1/proxyclient/m1n1/proxy.py", line 346, in wait_boot
    raise UartTimeout("Reconnection timed out")
m1n1.proxy.UartTimeout: Reconnection timed out