Demo_lab Qemu Simulator & Symbian Foundation
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QEMU Simulator & Symbian Foundation Johnathan White Accenture
Copyright © 2009 Accenture. All Rights Reserved.
1
QEMU Simulator & Symbian Foundation Johnathan White SEE October 2009
Copyright © 2009 Accenture. All Rights Reserved. Accenture, its logo, and High Performance Delivered are trademarks of Accenture.
Agenda • Simulator Introduction & Architecture • Running Simulator • Building/Debugging Simulator • Simulator Features/Demo • GUI environment • Questions Copyright © 2009 Accenture. All Rights Reserved.
3
Simulator not Symbian Emulator • Existing Symbian Emulator is x86 based – Requires entire environment built for x86 – Requires different tool chain – Often doesn’t accurately map hardware leading to integration issues • Simulator is ARM based – Single environment and tool chain required – Accurate mapping of hardware environment
Copyright © 2009 Accenture. All Rights Reserved.
4
What is QEMU ? • QEMU is a machine emulator which enables guest (Symbian) to run on host environment • Emulates full hardware platform including CPU and peripherals • QEMU is open source (http://www.qemu.org/) • Wide QEMU usage in the industry
Copyright © 2009 Accenture. All Rights Reserved.
5
Baseport • Symbian baseport (Syborg) required for Symbian to function on QEMU virtual hardware platform • Baseport comprises of ASSP/Variant code as well drivers and kernel extensions • Code above baseport is common between Simulator and other target hardware
Copyright © 2009 Accenture. All Rights Reserved.
6
Overall Architecture USER SPACE EUSER
KERNEL SPACE
Symbian SYBORG BASEPORT KERNEL
ARM
QEMU
NANO KERNEL
ASSP / VARIANT
KERNEL EXTENSIONS
SYBORG BOARD MODEL
BINARY TRANSLATION
DEVICE DRIVERS
PERIPHERALS
HOST
HOST ENV – Windows, Linux, MAC
HOST OS API’s
Host Hardware Copyright © 2009 Accenture. All Rights Reserved.
7
Simulator – EPL Kernel kit All “ingredients” required to create and run a basic Symbian image in QEMU are released under EPL and thus available to all
Pre-compiled Syborg baseport provided (\epoc32\release\armv5\urel &udeb)
Symbian Syborg source code provided (\sf\adaptation\qemu\baseport\syborg) Binaries Required to create Symbian TextShell Rom Image
QEMU
Host
Pre-compiled QEMU (\symbian-qemu-0.9.1\bin) QEMU source code provided (\sf\adaptation\qemu\symbian-qemu-0.9.1-12) QEMU environment compiled for win32 environment
SF Mercurial repo - http://developer.symbian.org/oss/FCL/sf/adaptation/qemu Copyright © 2009 Accenture. All Rights Reserved.
8
QEMU Simulator … its alive ! • First build a textshell Symbian ROM \sf\os\kernelhwsrv\kernel\eka\rombuild> rom -v syborg -i armv5 -b udeb
Creates debug textshell ROM image file
• Then run ROM image in QEMU \symbian-qemu-0.9.1\bin> arm-none-symbianelf-qemu-system.exe -kernel \sf\os\kernelhwsrv\kernel\eka\rombuild\syborgarmv5d.img -M \sf\adaptation\qemu\baseport\syborg\syborg.dtb -serial COM2
Copyright © 2009 Accenture. All Rights Reserved.
Launches ROM image in QEMU simulator
9
PRACTICAL 1
Instructions for Practical 1 & 2 & 3
Copyright © 2009 Accenture. All Rights Reserved.
10
QEMU – Output … and how it works Debug Port Kernel code -> Debug Handler -> Syborg UART -> Host UART -> Host UART
Display EShell -> Console Windows Server -> Screen Driver -> LCD Driver -> Frame Buffer -> Host Copyright © 2009 Accenture. All Rights Reserved.
Board Model Configuration controlled by DTS file
11
Rebuilding Syborg • Altering screen size Modify KConfigLcdHeight to be 100 in \sf\adaptation\qemu\baseport\syborg\fb\Syborg_fb.h
• Adding debug print Add Kern::Printf(“Hello World”) to void TPointerRv::Init3() in \sf\adaptation\baseport\syborg\pointer\syborg_pointer.cpp
• Building baseport \sf\adaptation\qemu\baseport\syborg> sbs -b bld.inf -c armv5_udeb –j 1
• Shows the ease of modification of the environment
Copyright © 2009 Accenture. All Rights Reserved.
12
PRACTICAL 2
Copyright © 2009 Accenture. All Rights Reserved.
13
Debugging Simulator • GDB Stop Mode Debugging QEMU contains GDB stub which allows simulation environment to be controlled by GDB debugger GDB only understands ELF -> need to convert from Symbian E32 image
• Command Line -> Use Eclipse GUI Further info http://developer.symbian.org/wiki/index.php/QEMU_&_Syborg_Debugging & \sf \adaption\qemu\docs directory
Copyright © 2009 Accenture. All Rights Reserved.
14
Simulator Features • • • • • • • •
Display driver Keyboard /keymapping Pointer driver Serial Pdd Ethernet Pdd Sound Pdd (dummy) Host file system (fsy + driver) Debug Monitor
Copyright © 2009 Accenture. All Rights Reserved.
15
Simulator Features Demo (1) • Simple Console Application • Source code - \sf\adaptation\qemu\applications\SymbianLogo_TextShell • Build using command - sbs -b bld.inf -c armv5 –j 1 • Add application into ROM Modiify \sf\os\kernelhwsrv\kernel\eka\rombuild\Tshell.oby to include line ‘ #include ’
• Build ROM / Start ROM in QEMU
Copyright © 2009 Accenture. All Rights Reserved.
16
PRACTICAL 3
Copyright © 2009 Accenture. All Rights Reserved.
17
Simulator Features Demo (2) • Type “symbianlogo” from prompt Host File System Pointer Driver Keyboard Driver Display Driver
• Where next with the demo Have a play … - Learning - Port image codec onto Symbian - Port audio assets, implement hooks to QEMU audio hardware - Don’t use console Wserv, create own implementation for direct input events, create own UI
Copyright © 2009 Accenture. All Rights Reserved.
18
GUI environment … SF GUI image configuration running in QEMU … not just Text shell SFL code plus configuration required to allow GUI to boot All user space code is common allowing for rapid prototyping of product images
Copyright © 2009 Accenture. All Rights Reserved.
19
QT UI environment … QT apps running on top of SF GUI image Open source QT from http://pepper.troll.no/ s60prereleases/ QT libs and example apps built from source then included in Syborg ROM Excellent usage of prototyping future technology
Copyright © 2009 Accenture. All Rights Reserved.
20
Next Steps … • This is just the beginning… – New/enhanced drivers & board model peripherals – Configurations & new directions – Contributions • Questions ? • Further information - \sf\adaptation\qemu\docs\ - developer.symbian.org –wiki,forum,articles
Copyright © 2009 Accenture. All Rights Reserved.
21
Copyright © 2009 Accenture. All Rights Reserved.
1
QEMU Simulator & Symbian Foundation Johnathan White SEE October 2009
Copyright © 2009 Accenture. All Rights Reserved. Accenture, its logo, and High Performance Delivered are trademarks of Accenture.
Agenda • Simulator Introduction & Architecture • Running Simulator • Building/Debugging Simulator • Simulator Features/Demo • GUI environment • Questions Copyright © 2009 Accenture. All Rights Reserved.
3
Simulator not Symbian Emulator • Existing Symbian Emulator is x86 based – Requires entire environment built for x86 – Requires different tool chain – Often doesn’t accurately map hardware leading to integration issues • Simulator is ARM based – Single environment and tool chain required – Accurate mapping of hardware environment
Copyright © 2009 Accenture. All Rights Reserved.
4
What is QEMU ? • QEMU is a machine emulator which enables guest (Symbian) to run on host environment • Emulates full hardware platform including CPU and peripherals • QEMU is open source (http://www.qemu.org/) • Wide QEMU usage in the industry
Copyright © 2009 Accenture. All Rights Reserved.
5
Baseport • Symbian baseport (Syborg) required for Symbian to function on QEMU virtual hardware platform • Baseport comprises of ASSP/Variant code as well drivers and kernel extensions • Code above baseport is common between Simulator and other target hardware
Copyright © 2009 Accenture. All Rights Reserved.
6
Overall Architecture USER SPACE EUSER
KERNEL SPACE
Symbian SYBORG BASEPORT KERNEL
ARM
QEMU
NANO KERNEL
ASSP / VARIANT
KERNEL EXTENSIONS
SYBORG BOARD MODEL
BINARY TRANSLATION
DEVICE DRIVERS
PERIPHERALS
HOST
HOST ENV – Windows, Linux, MAC
HOST OS API’s
Host Hardware Copyright © 2009 Accenture. All Rights Reserved.
7
Simulator – EPL Kernel kit All “ingredients” required to create and run a basic Symbian image in QEMU are released under EPL and thus available to all
Pre-compiled Syborg baseport provided (\epoc32\release\armv5\urel &udeb)
Symbian Syborg source code provided (\sf\adaptation\qemu\baseport\syborg) Binaries Required to create Symbian TextShell Rom Image
QEMU
Host
Pre-compiled QEMU (\symbian-qemu-0.9.1\bin) QEMU source code provided (\sf\adaptation\qemu\symbian-qemu-0.9.1-12) QEMU environment compiled for win32 environment
SF Mercurial repo - http://developer.symbian.org/oss/FCL/sf/adaptation/qemu Copyright © 2009 Accenture. All Rights Reserved.
8
QEMU Simulator … its alive ! • First build a textshell Symbian ROM \sf\os\kernelhwsrv\kernel\eka\rombuild> rom -v syborg -i armv5 -b udeb
Creates debug textshell ROM image file
• Then run ROM image in QEMU \symbian-qemu-0.9.1\bin> arm-none-symbianelf-qemu-system.exe -kernel \sf\os\kernelhwsrv\kernel\eka\rombuild\syborgarmv5d.img -M \sf\adaptation\qemu\baseport\syborg\syborg.dtb -serial COM2
Copyright © 2009 Accenture. All Rights Reserved.
Launches ROM image in QEMU simulator
9
PRACTICAL 1
Instructions for Practical 1 & 2 & 3
Copyright © 2009 Accenture. All Rights Reserved.
10
QEMU – Output … and how it works Debug Port Kernel code -> Debug Handler -> Syborg UART -> Host UART -> Host UART
Display EShell -> Console Windows Server -> Screen Driver -> LCD Driver -> Frame Buffer -> Host Copyright © 2009 Accenture. All Rights Reserved.
Board Model Configuration controlled by DTS file
11
Rebuilding Syborg • Altering screen size Modify KConfigLcdHeight to be 100 in \sf\adaptation\qemu\baseport\syborg\fb\Syborg_fb.h
• Adding debug print Add Kern::Printf(“Hello World”) to void TPointerRv::Init3() in \sf\adaptation\baseport\syborg\pointer\syborg_pointer.cpp
• Building baseport \sf\adaptation\qemu\baseport\syborg> sbs -b bld.inf -c armv5_udeb –j 1
• Shows the ease of modification of the environment
Copyright © 2009 Accenture. All Rights Reserved.
12
PRACTICAL 2
Copyright © 2009 Accenture. All Rights Reserved.
13
Debugging Simulator • GDB Stop Mode Debugging QEMU contains GDB stub which allows simulation environment to be controlled by GDB debugger GDB only understands ELF -> need to convert from Symbian E32 image
• Command Line -> Use Eclipse GUI Further info http://developer.symbian.org/wiki/index.php/QEMU_&_Syborg_Debugging & \sf \adaption\qemu\docs directory
Copyright © 2009 Accenture. All Rights Reserved.
14
Simulator Features • • • • • • • •
Display driver Keyboard /keymapping Pointer driver Serial Pdd Ethernet Pdd Sound Pdd (dummy) Host file system (fsy + driver) Debug Monitor
Copyright © 2009 Accenture. All Rights Reserved.
15
Simulator Features Demo (1) • Simple Console Application • Source code - \sf\adaptation\qemu\applications\SymbianLogo_TextShell • Build using command - sbs -b bld.inf -c armv5 –j 1 • Add application into ROM Modiify \sf\os\kernelhwsrv\kernel\eka\rombuild\Tshell.oby to include line ‘ #include
• Build ROM / Start ROM in QEMU
Copyright © 2009 Accenture. All Rights Reserved.
16
PRACTICAL 3
Copyright © 2009 Accenture. All Rights Reserved.
17
Simulator Features Demo (2) • Type “symbianlogo” from prompt Host File System Pointer Driver Keyboard Driver Display Driver
• Where next with the demo Have a play … - Learning - Port image codec onto Symbian - Port audio assets, implement hooks to QEMU audio hardware - Don’t use console Wserv, create own implementation for direct input events, create own UI
Copyright © 2009 Accenture. All Rights Reserved.
18
GUI environment … SF GUI image configuration running in QEMU … not just Text shell SFL code plus configuration required to allow GUI to boot All user space code is common allowing for rapid prototyping of product images
Copyright © 2009 Accenture. All Rights Reserved.
19
QT UI environment … QT apps running on top of SF GUI image Open source QT from http://pepper.troll.no/ s60prereleases/ QT libs and example apps built from source then included in Syborg ROM Excellent usage of prototyping future technology
Copyright © 2009 Accenture. All Rights Reserved.
20
Next Steps … • This is just the beginning… – New/enhanced drivers & board model peripherals – Configurations & new directions – Contributions • Questions ? • Further information - \sf\adaptation\qemu\docs\ - developer.symbian.org –wiki,forum,articles
Copyright © 2009 Accenture. All Rights Reserved.
21
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