QEMU - Revision history

Ralf at 10:43, 16 August 2012

2012-08-16T10:43:01Z

Ralf: /* Firmware */

2012-08-16T10:42:23Z

‎Firmware

Ralf: /* System architecture */

2012-08-16T10:42:02Z

‎System architecture

Ralf at 10:01, 15 August 2012

2012-08-15T10:01:48Z

Ralf at 10:01, 15 August 2012

2012-08-15T10:01:17Z

StefanWeil: moved Qemu to QEMU: that's how it should be written

2011-12-01T22:07:08Z

moved Qemu to QEMU: that's how it should be written

StefanWeil: QEMU: update list of supported cpus

2011-12-01T22:00:49Z

QEMU: update list of supported cpus

StefanWeil: replace Qemu by QEMU (that's how it should be written)

2011-12-01T21:55:47Z

replace Qemu by QEMU (that's how it should be written)

Alec v: download

2011-08-10T19:45:02Z

download

Alec v: /* See also */ svn

2008-04-22T12:29:59Z

‎See also: svn

← Older revision		Revision as of 10:43, 16 August 2012
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	Originally authored by French wizzard [[Wikipedia:Fabrice Bellard\|Fabrice Bellard]], Jocelyn Mayer did add support for MIPS as a target, others are now trying to complete the project.		Originally authored by French wizzard [[Wikipedia:Fabrice Bellard\|Fabrice Bellard]], Jocelyn Mayer did add support for MIPS as a target, others are now trying to complete the project.

−	[[category:virtualization]]	+	[[category:virtualization]] [[category:RedBoot]]

@@ Line 53: / Line 53: @@
 This is only a minor problem as unlike on a real system QEMU's virtual hardware is mostly initialized after a reset.
-At least some existing firmware for [[Mips Malta]] also works with QEMU, e.g. [[RedBoot]].
+At least some existing firmware for [[MIPS Malta]] also works with QEMU, e.g. [[RedBoot]].
 There is also a [http://www.brouhaha.com/~eric/software/mmon/ mmon] port to QEMU.

@@ Line 39: / Line 39: @@
 == System architecture ==
-QEMU 1.0 supports [[Mips Malta]] architecture with CoreLV card, ''mips'' pseudo-board, ACER PICA-61 (a [[Jazz]] deriviative) and ''mipssim'' simulator.
+QEMU 1.0 supports [[MIPS Malta]] architecture with CoreLV card, ''mips'' pseudo-board, ACER PICA-61 (a [[Jazz]] deriviative) and ''mipssim'' simulator.
   $ qemu-system-mips -M ?

← Older revision		Revision as of 10:01, 15 August 2012
Line 129:		Line 129:
	Originally authored by French wizzard [[Wikipedia:Fabrice Bellard\|Fabrice Bellard]], Jocelyn Mayer did add support for MIPS as a target, others are now trying to complete the project.		Originally authored by French wizzard [[Wikipedia:Fabrice Bellard\|Fabrice Bellard]], Jocelyn Mayer did add support for MIPS as a target, others are now trying to complete the project.

−	[category:virtualization]	+	[[category:virtualization]]

← Older revision		Revision as of 10:01, 15 August 2012
Line 128:		Line 128:
	== Credits ==		== Credits ==
	Originally authored by French wizzard [[Wikipedia:Fabrice Bellard\|Fabrice Bellard]], Jocelyn Mayer did add support for MIPS as a target, others are now trying to complete the project.		Originally authored by French wizzard [[Wikipedia:Fabrice Bellard\|Fabrice Bellard]], Jocelyn Mayer did add support for MIPS as a target, others are now trying to complete the project.
		+
		+	[category:virtualization]

@@ Line 3: / Line 3: @@
 == Processor ==
 QEMU is simulating a range of processors, the standard selection is for the 32 bit emulation a [[24K|24Kf]] [[MIPS32]] processor and for the 64 bit emulation a [[R4000]] [[Instruction_Set_Architecture#MIPS_III|MIPS III]] processor.
   $ qemu-system-mips64 -cpu '?'
   MIPS '4Kc'
   MIPS '4KEcR1'
   MIPS '4KEc'
   MIPS '24Kc'
   MIPS '24Kf'
   MIPS 'R4000'
   MIPS '5Kc'
   MIPS '5Kf'
   MIPS '20Kc'
-All processor emulations claim to have primary caches however the cache effects are not simulated and cacheops are treated as noops.  This is a design decision to improve performance over accuracy.  No benchmarking has been done however it is expected that the performance of the virtual MIPS system will be comparable to emulation of the other processors.
+All processor emulations claim to have primary caches however the cache effects are not simulated and cacheops are treated as noops.
 == System architecture ==

@@ Line 1: / Line 1: @@
-'''Qemu''' is a generic open source processor and system emulator.  It achieves good performance from using a [[Wikipedia:Just-in-time_compilation|Just-in-time compilation]].
+'''QEMU''' is a generic open source processor and system emulator.  It achieves good performance from using a [[Wikipedia:Just-in-time_compilation|Just-in-time compilation]].
 == Processor ==
-Qemu is simulating a range of processors, the standard selection is for the 32 bit emulation a [[24K|24Kf]] [[MIPS32]] processor and for the 64 bit emulation a [[R4000]] [[Instruction_Set_Architecture#MIPS_III|MIPS III]] processor.
+QEMU is simulating a range of processors, the standard selection is for the 32 bit emulation a [[24K|24Kf]] [[MIPS32]] processor and for the 64 bit emulation a [[R4000]] [[Instruction_Set_Architecture#MIPS_III|MIPS III]] processor.
   $ qemu-system-mips64 -cpu '?'
@@ Line 18: / Line 18: @@
 == System architecture ==
-Qemu 0.9.1 supports [[Mips Malta]] architecture with CoreLV card, ''mips'' pseudo-board, ACER PICA-61 (a [[Jazz]] deriviative) and ''mipssim'' simulator.
+QEMU 1.0 supports [[Mips Malta]] architecture with CoreLV card, ''mips'' pseudo-board, ACER PICA-61 (a [[Jazz]] deriviative) and ''mipssim'' simulator.
   $ qemu-system-mips -M ?
   Supported machines are:
-  mips       mips r4k platform (default)
+  mips       mips r4k platform
- malta      MIPS Malta Core LV
- pica61     Acer Pica 61
   mipssim    MIPS MIPSsim platform
 === Firmware ===
-The Qemu distribution does not contain any firmware for MIPS.
+The QEMU distribution does not contain any firmware for MIPS.
-This is only a minor problem as unlike on a real system Qemu's virtual hardware is mostly initialized after a reset.
+This is only a minor problem as unlike on a real system QEMU's virtual hardware is mostly initialized after a reset.
-At least some existing firmware for [[Mips Malta]] also works with Qemu, e.g. [[RedBoot]].
+At least some existing firmware for [[Mips Malta]] also works with QEMU, e.g. [[RedBoot]].
-There is also a [http://www.brouhaha.com/~eric/software/mmon/ mmon] port to the Qemu.
+There is also a [http://www.brouhaha.com/~eric/software/mmon/ mmon] port to QEMU.
 == MIPS pseudo board ==
-This paragraph describes the architecture of the MIPS system (''mips'') that currently is being emulated by Qemu.  As Qemu is still very much work in progress this is expected to change.
+This paragraph describes the architecture of the MIPS system (''mips'') that currently is being emulated by QEMU.
 === Memory map ===
-Qemu emulates a simple machine with [[Wikipedia:Industry_Standard_Architecture|ISA]]-like bus. ISA IO space mapped to the 0x14000000 (PHYS) and ISA memory at the 0x10000000 (PHYS, 16Mb in size). All peripherial devices are attached to this "bus" with the standard PC ISA addresses.
+QEMU emulates a simple machine with [[Wikipedia:Industry_Standard_Architecture|ISA]]-like bus. ISA IO space mapped to the 0x14000000 (PHYS) and ISA memory at the 0x10000000 (PHYS, 16Mb in size). All peripherial devices are attached to this "bus" with the standard PC ISA addresses.
 === Interrupt controller ===
-Qemu is emulating the standard builtin interrrupt controller including soft interrupts and the count/compare interrupt of [[R4000]]-class processors.  Cascaded externally to that is a [[Wikipedia:Intel_8259|i8259]] [[Wikipedia:Programmable Interrupt Controller|PIC]] interrupt controller that is cascaded to the CPU's INT0.
+QEMU is emulating the standard builtin interrrupt controller including soft interrupts and the count/compare interrupt of [[R4000]]-class processors.  Cascaded externally to that is a [[Wikipedia:Intel_8259|i8259]] [[Wikipedia:Programmable Interrupt Controller|PIC]] interrupt controller that is cascaded to the CPU's INT0.
 === Timer ===
@@ Line 49: / Line 51: @@
 === Graphics card ===
-Qemu is emulating a standard VGA graphics card however underlined, bold and blinking attributes are not supported.
+QEMU is emulating a standard VGA graphics card however underlined, bold and blinking attributes are not supported.
 === Serial interface ===
-Qemu is emulating a PC-style 8250-based serial interface.
+QEMU is emulating a PC-style 8250-based serial interface.
 === Network interface ===
-Qemu is emulating a single ISA NE2000 network card.
+QEMU is emulating a single ISA NE2000 network card.
 === Disk interface ===
-Qemu emulates a generic PC-style IDE interface.
+QEMU emulates a generic PC-style IDE interface.
 === Other peripherals ===
-Qemu supports other peripherals however support for them has not been integrated or tested into the MIPS port.
+QEMU supports other peripherals however support for them has not been integrated or tested into the MIPS port.
 == Status ==
 At this time the MIPS support still is in alpha stage.
-There is not much [[#Firmware|firmware]] for Qemu yet, so Qemu does the basic initialization as well as loading kernel and ramdisk itself.
+There is not much [[#Firmware|firmware]] for QEMU yet, so QEMU does the basic initialization as well as loading kernel and ramdisk itself.
-The Linux kernel has a special configuration to support the Qemu platform, no additional patches are needed.
+The Linux kernel has a special configuration to support the QEMU platform, no additional patches are needed.
 Debian installer images with such a kernel are available for [http://people.debian.org/~ths/d-i/mips/images/daily/qemu/netboot/ big endian] and [http://people.debian.org/~ths/d-i/mipsel/images/daily/qemu/netboot/ little endian].  They are also available on the [http://ftp.debian.org/debian/dists/etch/main/installer-mipsel/current/images/qemu/ Debian mirrors]
@@ Line 80: / Line 82: @@
   [ralf@box qemu]$
-There currently is no MIPS BIOS file for Qemu (see [[#Firmware|firmware]]).
+There currently is no MIPS BIOS file for QEMU (see [[#Firmware|firmware]]).
 However if passed a -kernel argument qemu will not call the firmware at all, so this does no harm at all.  Therefore, a command such as
@@ Line 87: / Line 89: @@
 will generate a firmware file that will do the job for now.
-Since Qemu 0.8.1 this workaround is obsolete, a missing BIOS file triggers only a warning message.
+Since QEMU 0.8.1 this workaround is obsolete, a missing BIOS file triggers only a warning message.
 == MIPS HOST SUPPORT ==
@@ Line 100: / Line 102: @@
 == See also ==
-* The Qemu homepage at http://www.qemu.org/ .
+* The QEMU homepage at http://www.qemu.org/ .
 * [http://wiki.qemu.org/Download Download]
 == Credits ==
 Originally authored by French wizzard [[Wikipedia:Fabrice Bellard|Fabrice Bellard]], Jocelyn Mayer did add support for MIPS as a target, others are now trying to complete the project.