Hi Adam

>    FPU0: Arch: VFPv3(3), Part: VFPv3(30), r: 4, v: 9, i: 41, t: hard,
>    p: dbl/sngl
> 
>    KERNEL: Warning: No page-fault handler for 0xee202214, error
>    0x94000848, pc f0039420
> 
> Somebody have tested Fiasco.OC+L4re on ODROID-X2 or another Exynos 4412
> platform?

On this platform this seems to be some pattern. However, last time I
tried it worked for me. So, hmm, could you try another compiler version
and see if it changes behavior? Maybe this gives us some hints.

I'm using a linaro toolchain (gcc-linaro-arm-linux-gnueabihf-4.8-2014.03_x86_64). I have tried the arm-none-eabi toolchain in Debian repository but fails compiling the snapshot.
I have made some progress trying to run FiascoOC+L4re on Odroid-X2. There are some changes that I have made:
I have modified the file "l4/mk/platforms/exynos4.conf" adapting Exynos4's platform to Odroid-X2. In this case the RAM size differs (Odroid-X2 have 2Gb). In this file I have configured the UART for serial output (I'm using UART 1).

PLATFORM_RAM_BASE = 0x40000000
- PLATFORM_RAM_SIZE_MB = 1024
+ PLATFORM_RAM_SIZE_MB = 2047
+ PLATFORM_UART_NR = 1

Booting the generated image I have detected that bootstrap's server is not using UART 1 for output. I have modified the "init" function on "l4/pkg/bootstrap/server/src/platform/exynos.cc" to use the configured UART on the platform file modified above.

unsigned long uart_base;
- unsigned uart_nr = 2;
+ unsigned uart_nr = PLATFORM_UART_NR;

I have tried to compile and test the image on the Odroid-X2, but fails the execution, this is the serial output:

L4 Bootstrapper
Build: #18 Sat May 2 15:56:00 CDT 2015, 4.8.3 20140303 (prerelease)
Scanning up to 2047 MB RAM, starting at offset 32MB
Memory size is 2047MB (40000000 - bfefffff)
Limiting 'RAM' region   [ 40000000, bfefffff] { 7ff00000} to   [ 40000000, bcffffff] { 7d000000} due to 3024 MB address limit
RAM: 0000000040000000 - 00000000bcffffff: 2048000kB
Total RAM: 2000MB
Scanning fiasco
Scanning sigma0
Scanning moe
Moving up to 5 modules behind 41100000
moving module 02 { 410b4000-410e565f } -> { 411a5000-411d665f } [202336]
moving module 01 { 410aa000-410b3377 } -> { 4119b000-411a4377 } [37752]
moving module 00 { 41043000-410a9daf } -> { 41134000-4119adaf } [421296]
moving module 04 { 41029000-410425b3 } -> { 4111a000-411335b3 } [103860]
moving module 03 { 4100f000-41028493 } -> { 41100000-41119493 } [103572]
Loading fiasco
Loading sigma0
Loading moe
find kernel info page...
found kernel info page at 0x40002000
Regions of list 'regions'
    [ 40000000, 400000e3] {       e4} Root   mbi_rt
    [ 40001000, 40001aff] {      b00} Kern   fiasco
    [ 40002000, 40076fff] {    75000} Kern   fiasco
    [ 40090000, 4009681b] {     681c} Sigma0 sigma0
    [ 40098000, 4009e177] {     6178} Sigma0 sigma0
    [ 40140000, 4018b4ab] {    4b4ac} Root   moe
    [ 41000000, 4100e4ff] {     e500} Boot   bootstrap
    [ 41100000, 41133fff] {    34000} Root   Module
API Version: (87) experimental
Sigma0 config    ip:40090100 sp:00000000
Roottask config ip:4014020c sp:00000000
Starting kernel fiasco at 400012c8
Hello from Startup::stage2
Per_cpu_data_alloc: (orig: 0xf0063a50-0xf00644d0)
Number of IRQs available at this GIC: 160
FPU0: Arch: VFPv3(3), Part: VFPv3(30), r: 4, v: 9, i: 41, t: hard, p: dbl/sngl

KERNEL: Warning: No page-fault handler for 0xee202214, error 0x94000848, pc f0039420

I have been testing and changing the compiling configuration. Using the below configuration to compile Fiasco.OC, the system boots and hangs at "Calibrating timer loop...":

Platform Timer -> Multi-core timer
Use ExtGic -> True
Execution Model -> TrustZone normal side
Secure Monitor Interface -> Mobicore
Enable multi processor support -> True
Maximal supported number of CPUs -> 4

This is the serial output when tested the image on Odroid-X2:

L4 Bootstrapper

Build: #56 Tue May 5 01:08:40 CDT 2015, 4.8.3 20140303 (prerelease)

Scanning up to 2047 MB RAM, starting at offset 32MB

Memory size is 2047MB (40000000 - bfefffff)

Limiting 'RAM' region [ 40000000, bfefffff] { 7ff00000} to [ 40000000, bcffffff] { 7d000000} due to 3024 MB address limit

RAM: 0000000040000000 - 00000000bcffffff: 2048000kB

Total RAM: 2000MB

Scanning fiasco

Scanning sigma0

Scanning moe

Moving up to 5 modules behind 41100000

moving module 02 { 41090000-410c165f } -> { 41181000-411b265f } [202336]

moving module 01 { 41086000-4108f377 } -> { 41177000-41180377 } [37752]

moving module 00 { 41043000-4108534f } -> { 41134000-4117634f } [271184]

moving module 04 { 41029000-410425b3 } -> { 4111a000-411335b3 } [103860]

moving module 03 { 4100f000-41028493 } -> { 41100000-41119493 } [103572]

Loading fiasco

Loading sigma0

Loading moe

find kernel info page...

found kernel info page at 0x40002000

Regions of list 'regions'

[ 40000000, 400000e3] { e4} Root mbi_rt

[ 40001000, 40001aff] { b00} Kern fiasco

[ 40002000, 4004efff] { 4d000} Kern fiasco

[ 40090000, 4009681b] { 681c} Sigma0 sigma0

[ 40098000, 4009e177] { 6178} Sigma0 sigma0

[ 40140000, 4018b4ab] { 4b4ac} Root moe

[ 41000000, 4100e4ff] { e500} Boot bootstrap

[ 41100000, 41133fff] { 34000} Root Module

API Version: (87) experimental

Sigma0 config ip:40090100 sp:00000000

Roottask config ip:4014020c sp:00000000

Starting kernel fiasco at 400012c8
Hello from Startup::stage2
Per_cpu_data_alloc: (orig: 0xf0040110-0xf0040b18)

Number of IRQs available at this GIC: 160

FPU0: Arch: VFPv3(3), Part: VFPv3(30), r: 4, v: 9, i: 41, t: hard, p: dbl/sngl

Watchdog initialized

SERIAL ESC: allocated IRQ 85 for serial uart

Not using serial hack in slow timer handler.

Welcome to Fiasco.OC (arm)!

L4/Fiasco.OC arm microkernel (C) 1998-2013 TU Dresden

Rev: unknown compiled with gcc 4.8.3 for Samsung Exynos []

Build: #68 Tue May 5 01:08:28 CDT 2015

Per_cpu_data_alloc: (orig: 0xf0040110-0xf0040b18)

KERNEL: Warning: Buddy::alloc: Size mismatch: a08 v 1000

Allocate 2568 bytes (3KB) for CPU[4] local storage (offset=13a4ef0, 0xf13e5000-0xf13e5a08)

Timer for CPU0 is at IRQ 28

Number of CPUs: 4

Calibrating timer loop... Per_cpu_data_alloc: (orig: 0xf0040110-0xf0040b18)

KERNEL: Warning: Buddy::alloc: Size mismatch: a08 v 1000

Allocate 2568 bytes (3KB) for CPU[1] local storage (offset=13a6ef0, 0xf13e7000-0xf13e7a08)

FPU1: Arch: VFPv3(3), Part: VFPv3(30), r: 4, v: 9, i: 41, t: hard, p: dbl/sngl

Per_cpu_data_alloc: (orig: 0xf0040110-0xf0040b18)

Timer for CPU1 is at IRQ 28

KERNEL: Warning: Buddy::alloc: Size mismatch: a08 v 1000

CPU[1]: goes to idle loop

Allocate 2568 bytes (3KB) for CPU[2] local storage (offset=13a9ef0, 0xf13ea000-0xf13eaa08)

FPU2: Arch: VFPv3(3), Part: VFPv3(30), r: 4, v: 9, i: 41, t: hard, p: dbl/sngl

Per_cpu_data_alloc: (orig: 0xf0040110-0xf0040b18)

Timer for CPU2 is at IRQ 28

KERNEL: Warning: Buddy::alloc: Size mismatch: a08 v 1000

CPU[2]: goes to idle loop

Allocate 2568 bytes (3KB) for CPU[3] local storage (offset=13acef0, 0xf13ed000-0xf13eda08)

FPU3: Arch: VFPv3(3), Part: VFPv3(30), r: 4, v: 9, i: 41, t: hard, p: dbl/sngl

Timer for CPU3 is at IRQ 28

CPU[3]: goes to idle loop

I think that the problem now is with the Exynos4's Timers, but i have been reviewing the implementations and it seems fine.
Is there anything wrong on my configuration or somebody have any idea?

Best regards

-- 
Lic. Reinier Millo Sánchez
Centro de Estudios de Informática
Universidad Central "Marta Abreu" de Las Villas
Carretera a Camajuaní Km 5 1/2
Santa Clara, Villa Clara, Cuba
CP 54830

"antes de discutir ... respira;
  antes de hablar ... escucha;
 antes de escribir ... piensa;
  antes de herir ... siente;
 antes de rendirte ... intenta;
  antes de morir ... vive"