FreeBSD on the ODroid-C2 (arm64 AMLogic S905)

Tom Vijlbrief tvijlbrief at gmail.com
Fri May 6 10:40:59 UTC 2016 

I've been hacking to see if I can get FreeBSD to boot on this little
device, and I got to this:

Using Meson_Ethernet device

TFTP from server 192.168.0.171; our IP address is 192.168.0.32

Filename 'kernel'.

Load address: 0x20000000

Loading: duplex

1000m

#################################################################

         #################################################################

         #################################################################

         #################################################################

         #################################################################

         ###

         2.9 MiB/s

done

Bytes transferred = 4811936 (496ca0 hex)

## Starting application at 0x20001000 ...

size 7f000000

pmap_bootstrap ffff000000004000 20000000 800000

ffff000000004000

0

platform_devmap_init (cbus)

Early printf yielding control to the real console.

KDB: debugger backends: ddb

KDB: current backend: ddb

Found 1 CPUs in the device tree

Copyright (c) 1992-2016 The FreeBSD Project.

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        The Regents of the University of California. All rights reserved.

FreeBSD is a registered trademark of The FreeBSD Foundation.

FreeBSD 11.0-CURRENT #478 01606fb(tc2): Fri May  6 12:17:26 CEST 2016

    tom at bsd11.v7f.eu:
/usr/home/tom/obj/arm64.aarch64/media/swan/github/freebsd/s
ys/ODROIDC2 arm64

FreeBSD clang version 3.8.0 (tags/RELEASE_380/final 262564) (based on LLVM
3.8.0
)

WARNING: WITNESS option enabled, expect reduced performance.

Amlogic aml-s905 SoC

FreeBSD/SMP: Multiprocessor System Detected: 1 CPUs

ULE: setup cpu 0

null: <full device, null device, zero device>

openfirm: <Open Firmware control device>

mem: <memory>

random: harvesting attach, 8 bytes (4 bits) from nexus0

ofwbus0: <Open Firmware Device Tree>

simplebus0: <Flattened device tree simple bus> on ofwbus0

random: harvesting attach, 8 bytes (4 bits) from simplebus0

clk_fixed0: <Fixed clock> on ofwbus0

random: harvesting attach, 8 bytes (4 bits) from clk_fixed0

random: harvesting attach, 8 bytes (4 bits) from ofwbus0

clkmsr0: <Amlogic aml8726 clkmsr> mem 0xc1108758-0xc1108767 on simplebus0

clkmsr0: bus clock 167 MHz

random: harvesting attach, 8 bytes (4 bits) from clkmsr0

scu0: <ARM Snoop Control Unit> mem 0xc4300000-0xc4300fff on simplebus0

random: harvesting attach, 8 bytes (4 bits) from scu0

cpuconfig0: <Amlogic CPU Config> mem 0xd901ff80-0xd901ff8f on simplebus0

random: harvesting attach, 8 bytes (4 bits) from cpuconfig0

ccm0: <Amlogic aml8726 ccm> mem 0xc1104140-0xc1104153 on simplebus0

random: harvesting attach, 8 bytes (4 bits) from ccm0

gic0: <ARM Generic Interrupt Controller> mem
0xc4301000-0xc4301fff,0xc4302000-0x
c4303fff,0xc4304000-0xc4305fff,0xc4306000-0xc4307fff irq 41 on ofwbus0

arm_gic_fdt_attach

gic0: pn 0x20, arch 0x2, rev 0x1, implementer 0x43b irqs 256

random: harvesting attach, 8 bytes (4 bits) from gic0

generic_timer0: <ARMv7 Generic Timer> irq 16,19,18 on ofwbus0

ofwbus0: no default resources for rid = 3, type = 1

Timecounter "ARM MPCore Timecounter" frequency 24000000 Hz quality 1000

Event timer "ARM MPCore Eventtimer" frequency 24000000 Hz quality 1000

random: harvesting attach, 8 bytes (4 bits) from generic_timer0

ofwbus0: <l2-cache-controller at c4200000> mem 0xc4200000-0xc4200fff irq 175
compat
 arm,pl310-cache (no driver attached)

ofwbus0: <timer at c1109990> mem 0xc1109990-0xc11099a7 irq 92 compat
amlogic,meson6
-timer (no driver attached)

simplebus0: <watchdog at c1109900> mem 0xc1109900-0xc1109907 irq 32 disabled
compat
 amlogic,meson6-wdt (no driver attached)

uart0: <Amlogiwart0: RTS iflow, CTS oflow

uart0: fast interrupt

uart0: PPS capture mode: DCDinvalid

random: harvesting attach, 8 bytes (4 bits) from uart0

simplebus0: <serial at c11084c0> mem 0xc11084c0-0xc11084d7 irq 58 disabled
compat a
mlogic,meson-uart (no driver attached)

simplebus0: <serial at c11084dc> mem 0xc11084dc-0xc11084f3 irq 107 disabled
compat
amlogic,meson-uart (no driver attached)

simplebus0: <serial at c1108700> mem 0xc1108700-0xc1108717 irq 125 disabled
compat
amlogic,meson-uart (no driver attached)

simplebus0: <i2c at c8100500> mem 0xc8100500-0xc810051f irq 124 disabled
compat aml
ogic,meson6-i2c (no driver attached)

simplebus0: <i2c at c1108500> mem 0xc1108500-0xc110851f irq 53 disabled compat
amlo
gic,meson6-i2c (no driver attached)

simplebus0: <i2c at c11087c0> mem 0xc11087c0-0xc11087df irq 160 disabled
compat aml
ogic,meson6-i2c (no driver attached)

simplebus0: <ir-receiver at c8100480> mem 0xc8100480-0xc810049f irq 47
disabled com
pat amlogic,meson6-ir (no driver attached)

simplebus0: <spi at c1108c80> mem 0xc1108c80-0xc1108cff disabled compat
amlogic,mes
on6-spifc (no driver attached)

simplebus0: <ethernet at c9410000> mem
0xc9410000-0xc941ffff,0xc1108108-0xc110810b
irq 40 disabled compat amlogic,meson6-dwmac (no driver attached)

simplebus0: <pinctrl at c11080b0> mem
0xc11080b0-0xc11080d7,0xc11080e8-0xc11080ff,0
xc1108120-0xc1108137,0xc8100014-0xc8100017,0xc810002c-0xc810002f,0xc810002c-0xc8
10002f compat amlogic,aml8726-pinctrl (no driver attached)

rtc0: <Amlogic aml8726 RTC> mem 0xc8100740-0xc8100753 irq 104 on simplebus0

rtc0: unsupported SoC

device_attach: rtc0 attach returned 6

gpio0: <Amlogic aml8726 GPIO> mem
0xc8100024-0xc8100027,0xc8100024-0xc8100027,0x
c8100028-0xc810002b on simplebus0

gpiobus0: <OFW GPIO bus> on gpio0

random: harvesting attach, 8 bytes (4 bits) from gpiobus0

gpioc0: <GPIO controller> on gpio0

random: harvesting attach, 8 bytes (4 bits) from gpioc0

random: harvesting attach, 8 bytes (4 bits) from gpio0

gpio1: <Amlogic aml8726 GPIO> mem
0xc1108054-0xc1108057,0xc1108058-0xc110805b,0x
c110805c-0xc110805f on simplebus0

gpiobus1: <OFW GPIO bus> on gpio1

random: harvesting attach, 8 bytes (4 bits) from gpiobus1

gpioc1: <GPIO controller> on gpio1

random: harvesting attach, 8 bytes (4 bits) from gpioc1

random: harvesting attach, 8 bytes (4 bits) from gpio1

gpio2: <Amlogic aml8726 GPIO> mem
0xc110806c-0xc110806f,0xc1108070-0xc1108073,0x
c1108074-0xc1108077 on simplebus0

gpiobus2: <OFW GPIO bus> on gpio2

random: harvesting attach, 8 bytes (4 bits) from gpiobus2

gpioc2: <GPIO controller> on gpio2

random: harvesting attach, 8 bytes (4 bits) from gpioc2

random: harvesting attach, 8 bytes (4 bits) from gpio2

simplebus0: <mmc at c1108c20> mem 0xc1108c20-0xc1108c3f irq 60 disabled compat
amlo
gic,aml8726-mmc (no driver attached)

simplebus0: <sdxc at c1108e00> mem 0xc1108e00-0xc1108e3b irq 110 disabled
compat am
logic,aml8726-sdxc-m8 (no driver attached)

simplebus0: <rng at c1108100> mem 0xc1108100-0xc1108107 disabled compat
amlogic,aml
8726-rng (no driver attached)

simplebus0: <usb-phy at c1108800> mem 0xc1108800-0xc110881f disabled compat
amlogic
,aml8726-m8-usb-phy (no driver attached)

simplebus0: <usb-phy at c1108820> mem 0xc1108820-0xc110883f disabled compat
amlogic
,aml8726-m8-usb-phy (no driver attached)

simplebus0: <usb at c9040000> mem 0xc9040000-0xc907ffff irq 62 disabled compat
syno
psys,designware-hs-otg2 (no driver attached)

simplebus0: <usb at c90c0000> mem 0xc90c0000-0xc90fffff irq 63 disabled compat
syno
psys,designware-hs-otg2 (no driver attached)

simplebus0: <eth at c9410000> mem 0xc9410000-0xc9411fff irq 40 disabled compat
amlo
gic,meson6-dwmac (no driver attached)

simplebus0: <fb at c8006020> mem
0xc8006048-0xc8006053,0xc1106800-0xc1106bff,0xc110
7400-0xc11077ff irq 34,35,44,45 disabled type display compat
Xamlogic,aml8726-fb
 (no driver attached)

cpulist0: <Open Firmware CPU Group> on ofwbus0

cpu0: <Open Firmware CPU> on cpulist0

arm64_cpu0: register <200>

random: harvesting attach, 8 bytes (4 bits) from arm64_cpu0

random: harvesting attach, 8 bytes (4 bits) from cpu0

random: harvesting attach, 8 bytes (4 bits) from cpulist0

ofwbus0: <leds> compat Xgpio-leds (no driver attached)

Device configuration finished.

procfs registered

Timecounters tick every 1.000 msec

tcp_init: net.inet.tcp.tcbhashsize auto tuned to 16384

=====
This is my github:

https://github.com/tomtor/freebsd/tree/tc2

which contains also some commits from Andrew Turner (his early RPI3 port)
and some preliminary Pine64 work (waiting for a board).

A script to build an image:

https://github.com/tomtor/image-freebsd-c2/blob/master/build/mkc2image.sh

I'm currently stuck because I cannot get a working Timer, interrupts are
for some reason not generated or get lost, so the boot hangs on an msleep
late in the boot process. I have no S905 documentation, only S805 docu,
which looks valid, except for the 64bit arm difference.

The guys at
http://www.hardkernel.com/main/products/prdt_info.php?g_code=G145457216438&tab_idx=2
are
still waiting for the datasheet :-/
What I noticed is that Timer-E is somehow not running, Timer-A works as
expected (I can see it counting in the debugger), except perhaps for the
interrupts.

If someone has suggestions how to fix this, cq hints how to proceed, that
would be very nice!

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