Delay::measure function

[Xavier LEBARS]

Hi everyone,

 

I’m currently trying to port Fiasco + L4re with the « Hello World » application on a Zedboard which has a Xilinx Zynq  z7020 processor (ARM Cortex A9 MPCore). 

 

We already configure UART and Timer for the microkernel but boot crash after the step : Calibrating Timer loop… Our problem seems to occur during the execution of Delay::measure() function. Does anyone know what it exactly does and especially update_timer which seems to have no effect in our case.  

 

Here is the boot execution trace :

 

# Booting kernel from Legacy Image at 03000000 ...

   Image Name:   L4 Image #42

   Image Type:   ARM Linux Kernel Image (uncompressed)

   Data Size:    868352 Bytes = 848 KiB

   Load Address: 01100000

   Entry Point:  01100000

   Verifying Checksum ... OK

## Loading init Ramdisk from Legacy Image at 02000000 ...

   Image Name:

   Image Type:   ARM Linux RAMDisk Image (gzip compressed)

   Data Size:    5619903 Bytes = 5.4 MiB

   Load Address: 00000000

   Entry Point:  00000000

  Verifying Checksum ... OK

## Flattened Device Tree blob at 02a00000

   Booting using the fdt blob at 0x2a00000

   Loading Kernel Image ... OK

   Loading Ramdisk to 1f5d2000, end 1fb2e0bf ... OK

   Loading Device Tre

L4 Bootstrapper

  Build: #42 Tue Jul  1 15:59:58 CEST 2014, 4.7.3

  Scanning up to 512 MB RAM

  Memory size is 512MB (00100000 - 200fffff)

  RAM: 0000000000100000 - 00000000200fffff: 524288kB

  Total RAM: 512MB

  mod04: 011ba000-011d3578: hello

  mod03: 011a0000-011b9458: l4re

  mod02: 0116e000-0119f624: moe

  mod01: 01164000-0116d33c: sigma0

  mod00: 01115000-011638e8: fiasco

  Moving up to 5 modules behind 1200000

  moving module 00 { 1115000-11638e7 } -> { 12bf000-130d8e7 } [321768]

  moving module 01 { 1164000-116d33b } -> { 130e000-131733b } [37692]

  moving module 02 { 116e000-119f623 } -> { 1318000-1349623 } [202276]

  moving module 03 { 11a0000-11b9457 } -> { 1200000-1219457 } [103512]

  moving module 04 { 11ba000-11d3577 } -> { 121a000-1233577 } [103800]

  Scanning fiasco -serial_esc

  Scanning sigma0

  Scanning moe --init=rom/hello

  Relocated mbi to [0x110e000-0x110e0e2]

  Loading fiasco

  Loading sigma0

  Loading moe

  find kernel info page...

  found kernel info page at 0x102000

Regions of list 'regions'

    [   101000,    101b3f] {      b40} Kern   fiasco

    [   102000,    15efff] {    5d000} Kern   fiasco

    [   190000,    1965fb] {     65fc} Sigma0 sigma0

    [   198000,    19e17b] {     617c} Sigma0 sigma0

    [   240000,    26cacb] {    2cacc} Root   moe

    [   270000,    286f0f] {    16f10} Root   moe

    [  1100000,   11143f3] {    143f4} Boot   bootstrap

    [  110a000,   110a0a6] {       a7} Boot   mbi

    [  110e000,   110e1df] {      1e0} Root   Multiboot info

    [  1114048,   111409f] {       58} Boot   mbi

    [  1200000,   1233577] {    33578} Root   Module

  API Version: (87) experimental

  Sigma0 config    ip:00190100 sp:01113de4

  Roottask config  i�Hello from Startup::stage2

Number of IRQs available at this GIC: 96

Cache config: ON

ID_PFR[01]:  00001231 00000011 ID_[DA]FR0: 00010444 00000000

ID_MMFR[04]: 00100103 20000000 01230000 00102111

L2: ID=410000c8 Type=9e300300 Aux=72360000 WMask=ff S=0

L2: Type L2C-310 Size = 512kB

SERIAL ESC: allocated IRQ 59 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: f5bb6d4 compiled with gcc 4.7.3 for zynq    []

Build: #69 Tue Jul  1 15:59:21 CEST 2014

 

Calibrating timer loop...

 

Thanks in advance

Best Regards 

Xavier

 

 

 

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